Bulletin of Engineering Geology and the Environment最新文献_第6页

Multi-scale geological modeling and in-situ stress inversion of Xincheng Gold Mine at the Jiaodong Peninsula, China 中国胶东半岛新城金矿多尺度地质建模与原位应力反演

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-12 DOI: 10.1007/s10064-024-03982-6

Jiangmei Wang, Wancheng Zhu, Xige Liu, Jiateng Guo, Jiazhao Yan

{"title":"Multi-scale geological modeling and in-situ stress inversion of Xincheng Gold Mine at the Jiaodong Peninsula, China","authors":"Jiangmei Wang, Wancheng Zhu, Xige Liu, Jiateng Guo, Jiazhao Yan","doi":"10.1007/s10064-024-03982-6","DOIUrl":"10.1007/s10064-024-03982-6","url":null,"abstract":"<div><p>The Jiaodong Peninsula in China is rich in metal deposits, but its geological setting is very complex. To ensure the stability of metal mining-induced excavations of the study area, it is necessary to understand the development of regional structures and the distribution of stress fields. Considering the multi-scale characteristics of geological objects, we conducted multi-scale 3D geological modeling and in situ stress inversion from regional large-scale (100km), regional medium-scale (10km), and engineering scale (km) to obtain the in situ stress distribution of several mine areas (Xincheng, Tengjia, and Hongbu mining areas) at the Xincheng Gold Mine, in the Jiaodong Peninsula region and guide engineering practice. The Hermite Radial Basis Function (HRBF) is adopted to obtain multi-scale geological models including small faults, surrounding rocks, and ore bodies by using regional field survey data, exploration profiles, and boreholes. Then, through several groups of measured in situ stress data, multi-scale in situ stress field inversion is carried out by adopting the multiple linear regression method. Then, the distribution of the in situ stress field is analyzed. In this paper, each smaller-scale 3D modeling and in situ stress inversion is refined and corrected based on the larger-scale modeling and inversion. The results show that the calculated in situ stress of multi-scale inversions is more accurate, which verifies the practicability and effectiveness of the multi-scale modeling and in situ stress inversion. Therefore, compared with the single-scale geological model and inversion, the multi-scale model and inversion can predict the in situ stress distribution of rock engineering more accurately.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical slowing down features of acoustic emission signals for predicting the failure of black sandstone under different freezing temperatures 预测黑砂岩在不同冻结温度下失效的声发射信号临界减速特征

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-12 DOI: 10.1007/s10064-024-03997-z

Zilong Zhou, Zhen Wang, Barkat Ullah

{"title":"Critical slowing down features of acoustic emission signals for predicting the failure of black sandstone under different freezing temperatures","authors":"Zilong Zhou, Zhen Wang, Barkat Ullah","doi":"10.1007/s10064-024-03997-z","DOIUrl":"10.1007/s10064-024-03997-z","url":null,"abstract":"<div><p>This study examines the influence of sub-zero temperatures on the mechanical behavior and failure prediction of black sandstone. For this, quasi-static compression tests were conducted on black sandstone specimens under various temperatures, 5 °C, -5 °C, -10 °C, and − 20 °C. An acoustic emission (AE) monitoring technique was utilized to reveal the damage features of the rock at negative temperatures. The autocorrelation coefficient (AC) and variance of AE counts were assessed using the critical slowing down (CSD) theory to examine the precursor characteristics of rock failure under sub-zero temperatures. Further, the analysis of correlation dimension (CD) evolution was conducted to validate the results of CSD theory. The results indicate that as the temperature decreased from 5 °C to -20 °C, the uniaxial compressive strength (UCS) of the black sandstone increased by 43.09%. The AE counts, and cumulative counts effectively reflect the damage progression in the rock under compressive loading. The AE counts, and AE cumulative counts gradually rise with decreasing temperatures, indicating a more intense AE response. The AE signals associated with rock failure demonstrate CSD phenomena, where abrupt increases in the AC and variance curves of AE counts can be used to predict the ferocious failure. Furthermore, the findings show that the precursory time lag in black sandstone samples increases as the temperature decreases. Compared to CD and AC curves, the variance curve of AE counts provides a more distinct early warning feature for predicting rock failure under sub-zero temperatures. Consequently, this research holds significant implications for the prediction of rock failure in cold regions.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic stress response and fatigue characteristics of tight sandstone reservoirs with pulsating hydraulic fracturing 脉动水力压裂致密砂岩储层的动态应力响应和疲劳特性

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-11 DOI: 10.1007/s10064-024-03995-1

Ge Zhu, Bari Hanane, Shimin Dong, Zhaoxia Jin, Weicheng Li

{"title":"Dynamic stress response and fatigue characteristics of tight sandstone reservoirs with pulsating hydraulic fracturing","authors":"Ge Zhu, Bari Hanane, Shimin Dong, Zhaoxia Jin, Weicheng Li","doi":"10.1007/s10064-024-03995-1","DOIUrl":"10.1007/s10064-024-03995-1","url":null,"abstract":"<div><p>During pulsating hydraulic fracturing (PHF), the reservoir generates dynamic stress response and fatigue damage under the excitation of fluctuating fluid pressure. However, it remains to be determined which is the primary factor affecting fracturing effectiveness, particularly for tight sandstone reservoirs. Identifying the critical factors that govern the effectiveness can help optimize the fracturing scheme and increase production. The present study employed laboratory experiments and numerical simulations to investigate its mechanism. Specifically, the rock triaxial loading test system was utilized to conduct the PHF experiments. It was analyzed that the effect of maximum pressure and frequency on breakdown pressure, acoustic emission signals, and fracture morphology. Subsequently, a three-dimensional numerical simulation model of dynamic stress response was established using ABAQUS. The influence of the maximum pressure and frequency on the stress response amplitude was also discussed. The experimental results revealed that PHF can cause fatigue damage to the specimens. Interestingly, compared to conventional hydraulic fracturing (CHF), PHF can reduce the breakdown pressure. Additionally, it is beneficial to reduce the fatigue life by increasing the maximum pressure or decreasing the frequency. From the simulation results, enhancing the maximum pressure can notably improve the stress response amplitude. However, in the low-frequency range, the frequency variation has a minor impact on the amplitude. To conclude, the fracturing effect primarily relies on the fatigue damage effect rather than the dynamic stress in the low-frequency range. The results are significant for comprehending the PHF mechanism and determining parameters in engineering applications.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of clay swelling on crack generation in red stratum soft rock during water-induced disintegration: a matrix-based discrete element simulation study 水诱导崩解过程中粘土膨胀对红色地层软岩裂缝生成的影响：基于矩阵的离散元模拟研究

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-11 DOI: 10.1007/s10064-024-03999-x

Shiqi Li, Zhongping Yang, Yuhao Gao, Xinrong Liu, Xiaoguang Jin

{"title":"The effect of clay swelling on crack generation in red stratum soft rock during water-induced disintegration: a matrix-based discrete element simulation study","authors":"Shiqi Li, Zhongping Yang, Yuhao Gao, Xinrong Liu, Xiaoguang Jin","doi":"10.1007/s10064-024-03999-x","DOIUrl":"10.1007/s10064-024-03999-x","url":null,"abstract":"<div><p>Red stratum soft rock, which is prevalent in the deep backfill regions of southwest China, exhibits water-induced disintegration characteristics that significantly impact the bearing capacity and deformation behaviours of the foundation. To further examine its damage evolution after encountering water, a numerical simulation study was conducted utilising the particle discrete element method, based on immersion testing. The water-induced disintegration of soft rock is characterised by the expansion of clay mineral particles and a reduction in breaking force and residual strength coefficient. The findings indicate that the disintegration of red stratum soft rock can be categorised into three stages: Surface Erosion, Crack Development, and Crack Penetration. Natural cracks enhances permeability, while any increase in clay mineral content heightens hydration sensitivity. These factors decrease the slaking durability index, exacerbating failure and potentially altering the disintegration mode. The excellent simulation outcomes in this case indicate that the discrete element method effectively simulates the disintegration process of red stratum soft rock. The work thus enhances understanding of disintegration mechanisms and paves the way for further elucidation of the complex behaviours of soft rock.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reactivation mechanism of a deep-seated landslide along fault zones in Baihetan reservoir area 白鹤滩库区沿断层带深层滑坡的再活化机制

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-09 DOI: 10.1007/s10064-024-03998-y

Taiyi Chen, Guangli Xu, Chengyun Li, Hong Peng, Bingqian Wang

{"title":"Reactivation mechanism of a deep-seated landslide along fault zones in Baihetan reservoir area","authors":"Taiyi Chen, Guangli Xu, Chengyun Li, Hong Peng, Bingqian Wang","doi":"10.1007/s10064-024-03998-y","DOIUrl":"10.1007/s10064-024-03998-y","url":null,"abstract":"<div><p>Many reservoir landslides have started undergoing rapid deformation in the Baihetan Reservoir region (BRR) by the complex structural background and initial impoundment, posing a significant risk to human life and infrastructure. In order to understand the intrinsic relationships between the geological structure, reservoir water, and landslide deformation, a detailed analysis of the Gengdi landslide along fault zones during the first water level circulation fluctuation in the BBR was conducted. The investigation was conducted systematically by means of comprehensive in situ monitoring, drilled cores, adit, high-density resistivity method, field investigations and engineering mapping, and aerial photographs. The Gengdi landslide showed a characteristic type of bending flowing and fracturing. The shear outlets of the landslide are the top and bottom of the fault gouge respectively. Hydrodynamic pressure and fault gouge softening are the trigger factors of the landslide. The main deformation of the landslide was along a deep fault zone. The maximum rate of landslide deformation occurred during the period when the reservoir water level fluctuation between the top and bottom of fault gouge. The findings revealed that the reservoir water level fluctuation caused the compression of the fault gouge and dragged the upper rock mass of fault zone. This study provided a detailed geological model for the formation of the landslide in fault zone. The likelihood of large-scale landslides is significantly high with the current deformation rate of the Gengdi landslide. Therefore, the analysis of reactivation mechanism and control of this type of landslide should be strengthened.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of freeze–thaw and thermal shock weathering on natural stones through deep learning-based algorithms 通过基于深度学习的算法预测天然石材的冻融和热冲击风化现象

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-09 DOI: 10.1007/s10064-024-03961-x

A. Sakcali

{"title":"Prediction of freeze–thaw and thermal shock weathering on natural stones through deep learning-based algorithms","authors":"A. Sakcali","doi":"10.1007/s10064-024-03961-x","DOIUrl":"10.1007/s10064-024-03961-x","url":null,"abstract":"<div><p>Natural stones used as construction materials in outdoor applications and the rock environment in rock engineering applications are subject to weakening such as freeze-thaw (F-T) and thermal shock (TS) due to weather conditions. Predicting the mechanical effects of F-T and TS weathering is important for the design on rock engineering. While the change in mechanical properties can be determined by F-T and TS simulating with experimental studies, it can also be predicted with simple models in the literature and determining initial conditions. While the properties of weakened rock are determined from the models proposed in the literature, a rock-specific experimental study is needed and precise results cannot be obtained. Instead, the predicting of F-T and TS weathering on rocks by using deep learning-based algorithms enables better data for design. In this study, the effects of deterioration on physical and mechanical properties of natural stones after F-T and TS weathering was investigated with experimental simulation. The samples of 15 different rock type were subjected to F-T and TS process for 15, 30 and 45 cycles following standard methods in experimental study. The changes of apparent porosity, water absorption by weight, P-wave velocity, uniaxial compressive strength and elastic module of rocks after each process were investigated and analysed with different deep learning algorithms to predict these properties. It has been determined that AdaBoost is the best algorithm for predicting the properties of natural stone after F-T and TS weathering. Additionally, the stress distribution was modelled numerically to investigate the effect of F-T and TS weathering on rock samples. The study shows that deep learning-based algorithms can be used as an auxiliary tool in prediction in order to perform more precise studies.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mobility forecast of gravel-silty clay landslide using ring shear test and discrete element method in Shaziba, southwestern Hubei Province, China 利用环剪试验和离散元法预测中国湖北省西南部沙子坝砾石-淤泥质粘土滑坡的流动性

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-09 DOI: 10.1007/s10064-024-03983-5

Yifan Sheng, Bin Zhang, Guangli Xu, Zepeng Cheng, Zijian Shi, Yuanyao Li

{"title":"Mobility forecast of gravel-silty clay landslide using ring shear test and discrete element method in Shaziba, southwestern Hubei Province, China","authors":"Yifan Sheng, Bin Zhang, Guangli Xu, Zepeng Cheng, Zijian Shi, Yuanyao Li","doi":"10.1007/s10064-024-03983-5","DOIUrl":"10.1007/s10064-024-03983-5","url":null,"abstract":"<div><p>The rapid movement and extensive displacement of gravel-silty clay landslides result in significant property damage and loss. Following the destabilization of the Shaziba landslide in Enshi City, it transformed into a debris flow, ultimately obstructing the Qingjiang River and creating a barrier dam. This study delves into the failure mechanism, leap dynamics, and motion processes of this specific landslide by employing a blend of ring shear testing and the discrete element method. Initially, the residual shear strength of the sliding soil was assessed through ring shear tests conducted under various coaxial stresses and shear rates within the sliding region, using field surveys and aerial imagery. Building upon this foundation, the entire progression of the landslide-from sliding to settlement-was replicated using PFC3D, allowing for an examination of the landslide's movement characteristics such as speed, displacement, and trajectory. The findings indicate that the shear displacement and residual friction coefficients are higher at elevated shear rates compared to lower rates. The landslide commences with an initial acceleration phase, with the silty clay material's movement lasting approximately 757 s, reaching a maximum velocity of 32.5 m/s and a displacement exceeding 1000 m. The simulated settlement volume of the landslide (9.31 × 10<sup>5</sup>m<sup>3</sup>) closely aligns with the results obtained from field investigations (1.5 × 10<sup>6</sup>m<sup>3</sup>). This research offers comprehensive insights into recent Shaziba landslides, serving as a valuable resource for enhancing our understanding of the dynamics involved and mitigating the potential risks associated with such events.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Field and laboratory studies guiding to empirical prediction of cutting and bead consumption rates of diamond wire cutting machines 指导金刚石线切割机切割和切割珠消耗率经验预测的实地和实验室研究

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-09 DOI: 10.1007/s10064-024-03945-x

Can Polat, Deniz Tumac

{"title":"Field and laboratory studies guiding to empirical prediction of cutting and bead consumption rates of diamond wire cutting machines","authors":"Can Polat, Deniz Tumac","doi":"10.1007/s10064-024-03945-x","DOIUrl":"10.1007/s10064-024-03945-x","url":null,"abstract":"<div><p>Predictions of cutting and bead consumption rates of diamond wire cutting machines are major subjects in determining the economics of natural stone quarrying. The main aim of this study is to develop empirical models to predict areal net cutting rate and bead consumption rate of diamond wire cutting machines based on statistical analyses using different physical and mechanical properties of natural stones at macro and micro scales. Firstly, twenty different natural stone quarries in Turkey were visited to collect natural stone samples and record field performance (areal net cutting rate and bead consumption rate) of diamond wire cutting machines. Macro and micro scale tests were applied in the laboratory on twenty-five different natural stone samples of metamorphic and sedimentary origins obtained from the fields. Macro-scale physical and mechanical property tests include density, uniaxial compressive strength, Brazilian tensile strength, Shore scleroscope hardness, and Schmidt hammer hardness. Micro-scale tests include texture coefficient, Knoop microhardness, and mean grain size. Then, simple, multiple linear, and multiple non-linear regression analyses were carried out using the macro and micro scale stone properties and the areal net cutting rate and bead consumption rate. An important feature distinguishing this study from previous ones is the use of micro and macro properties of stones separately and together, as well as the use of a very large number of data with high diversity. Results indicate that the models suggested in this study may be very useful and reliable tools for predicting the areal net cutting rate and bead consumption rate of diamond wire cutting machines.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation analysis and hazard assessment of the landslide-debris flow disaster chain in small watersheds of the reservoir type 水库型小流域滑坡-泥石流灾害链的形成分析与危害评估

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-07 DOI: 10.1007/s10064-024-03929-x

Jingkai Qu, Weimin Yang, Yiguo Xue, Chunshan Zhang, Fanmeng Kong, Jiajia Li, Feipeng Wan, Siqi Ma, Haibing Tang, Chuancheng Xu

{"title":"Formation analysis and hazard assessment of the landslide-debris flow disaster chain in small watersheds of the reservoir type","authors":"Jingkai Qu, Weimin Yang, Yiguo Xue, Chunshan Zhang, Fanmeng Kong, Jiajia Li, Feipeng Wan, Siqi Ma, Haibing Tang, Chuancheng Xu","doi":"10.1007/s10064-024-03929-x","DOIUrl":"10.1007/s10064-024-03929-x","url":null,"abstract":"<div><p>Frequent disaster chains from landslides and debris flows in the tectonically active southwest of the Loess Plateau significantly impact local settlement safety and economic development. This paper proposes a method that integrates a hydrological stability model for landslides with FLO-2D numerical simulation to predict the reservoir type landslide-debris flow disaster chain under various rainfall conditions, based on the amplifying effects of landslides on debris flow disasters during extreme rainfall events. The results indicate that the construction of reservoir is a key factor triggering landslides. The calculated rainfall threshold for landslide reactivation ranges from 0.0–122.1 mm/d, meaning that under a 20-year return period, 98.5% (1750.0 × 10<sup>4</sup> m<sup>3</sup>) of landslides will reactivate and become material sources of debris flow. Therefore, under the influence of heavy rainfall, landslides slide into the reservoir, forming debris flows, which serve as a model for the landslide-debris flow disaster chain evolution. Simulation results for the Yuling Gully debris flow under different return periods indicate that the volume of debris flow under a 100-year return period is equivalent to the sum of volumes under both 20-year and 50-year return periods, while the area of high-hazard areas is 2.7 times greater than that under a 20-year return period. Therefore, it is crucial to emphasize the investigation of debris flow disaster chains in small watersheds that contain reservoirs, as well as to enhance disaster prevention and early warning systems to ensure public safety.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional dynamic stability analysis of vegetation-rooted slopes 植被扎根斜坡的三维动态稳定性分析

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-06 DOI: 10.1007/s10064-024-03984-4

Chen Guang-Hui, Wang Ling, Ouyang Xu, Jiang Han

{"title":"Three-dimensional dynamic stability analysis of vegetation-rooted slopes","authors":"Chen Guang-Hui, Wang Ling, Ouyang Xu, Jiang Han","doi":"10.1007/s10064-024-03984-4","DOIUrl":"10.1007/s10064-024-03984-4","url":null,"abstract":"<div><p>In this study, an analytical model for the three-dimensional (3D) dynamic stability analysis of vegetation-rooted slopes is first developed under steady-state unsaturated flow conditions. Root reinforcement, defined as the increase in the soil shear strength produced by the mechanical and hydrological effects of vegetation roots, is included in the proposed analytical model. By combining the modified pseudo-dynamic approach (MPDA) and the kinematic theory of limit analysis to the 3D discretized failure model, the most critical failure surface and the corresponding factor of safety (<i>FS</i>) are derived to examine the stability of vegetation-rooted slopes with the aid of the optimization algorithm of particle swarm. The proposed approach is verified by comparing with published analytical solutions and numerical results. A series of parametric analysis are then conducted to examine the influence of seismic-related parameters, vegetation properties, possible surcharge and slope geometry parameters on the slope stability. Finally, a comparison between the slope stability under different root architectures is provided and discussed. The results show that, for these selected cases, the stability of vegetation-rooted slopes is significantly improved by approximately 45% compared to bare soil slopes, and the divergences of reinforcement effects between different root architectures can be negligible.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0