Bulletin of Engineering Geology and the Environment最新文献_第9页

Laboratory characterization of soft clay mixed with EPS, lime, fly ash, and sodium silicate EPS、石灰、粉煤灰和水玻璃混合软粘土的实验室表征

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-11 DOI: 10.1007/s10064-023-03297-y

Ping Jiang, Wenqian Zheng, Lin Zhou, Na Li, Wei Wang

{"title":"Laboratory characterization of soft clay mixed with EPS, lime, fly ash, and sodium silicate","authors":"Ping Jiang, Wenqian Zheng, Lin Zhou, Na Li, Wei Wang","doi":"10.1007/s10064-023-03297-y","DOIUrl":"10.1007/s10064-023-03297-y","url":null,"abstract":"<div><p>The influence of expanded polystyrene foam (EPS) and sodium silicate content on the density and mechanical properties of soft clay mixed with EPS, lime, fly ash, and sodium silicate is investigated in this study using unconfined compressive strength (UCS), cyclic load (CL), and scanning electron microscope (SEM) tests. It was found that EPS can efficiently decrease the density of mixed soil, whereas sodium silicate has no influence on the density. The UCS, elastic modulus, resilient modulus, and maximum dynamic stress first increased and then decreased with increasing sodium silicate content and decreased with increasing EPS content. When the sodium silicate and EPS contents were 6% and in the range 0.5 to 1%, respectively, the density of the mixed soil could be reduced efficiently, and the mechanical properties could be maintained. Based on this, an EPS content of 0.5 to 1% and a sodium silicate content of 6% can be considered optimal. Subsequently, an empirical model between the UCS, EPS content, and silicate content is proposed, which can provide theoretical support for mixed soil engineering applications.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4463059","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

Stabilizing a silt using waste limestone powder 用废石灰石粉稳定淤泥

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-10 DOI: 10.1007/s10064-023-03302-4

Ali Firat Cabalar, Rizgar Abdulrahman Omar

{"title":"Stabilizing a silt using waste limestone powder","authors":"Ali Firat Cabalar, Rizgar Abdulrahman Omar","doi":"10.1007/s10064-023-03302-4","DOIUrl":"10.1007/s10064-023-03302-4","url":null,"abstract":"<div><p>Limestone powder produced by mechanical crushing of quarried rocks to usable sizes is a by-product, which has been studied as an alternative additive material for stabilising mechanical behaviour of a low plastic silt. Use of such application can reduce the amount of waste limestone powder, thereby reducing the environmental impact from disposal into landfills. The low plastic silt mixed by adding 0%, 5%, 10%, 20%, 30%, 40%, and 50% of dry limestone powder has been characterized by means of various laboratory tests, including fall cone, unconfined compressive strength (UCS), California Bearing Ratio, and one-dimensional consolidation test. The testing results indicated a substantial decrease in Atterberg’s limits, increment in strength, and a decrease of its deformability with limestone powder addition in the silt. The specimens tested in UCS were cured for 0, 7, 14, and 28 days. This results in a reduction of about 25% in thickness of flexible pavement with limestone powder treated subbase layers. Evidently, the optimum content of limestone powder used appears to be about 30% of the total powder content in mixtures tested.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-023-03302-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4422441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of the degree of natural cracks development on the mechanical properties of marble 天然裂缝发育程度对大理石力学性能的影响

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-10 DOI: 10.1007/s10064-023-03319-9

Yong Han, Yue-Mao Zhao

{"title":"Effect of the degree of natural cracks development on the mechanical properties of marble","authors":"Yong Han, Yue-Mao Zhao","doi":"10.1007/s10064-023-03319-9","DOIUrl":"10.1007/s10064-023-03319-9","url":null,"abstract":"<div><p>The stability of deep-buried hard rock roadways requires urgent improvement when the surrounding rock contains numerous cracks. In this study, a quantitative method using two parameters, the preferential angle (<i>θ</i><sub><i>p</i></sub>) and degree of crack development coefficient (<i>K</i>), was developed to measure the degree of natural cracks development in rock specimens. True triaxial compression tests were performed on intact marble and marble containing natural cracks to investigate the effect of the degree of development of natural cracks on the strength and failure modes. Compared with the results for the intact specimens, the peak strength and crack damage stress of the marble containing a single natural crack decreased nonlinearly and then increased with an increase in the preferential angle. The results for marble containing multiple cracks exhibited a similar pattern. The peak strength and crack damage decreased logarithmically with an increase in the degree of the crack development coefficient. There were four main failure modes in the specimens containing cracks: shear failure caused by compression, natural crack shear, tensile failure, and tension–shear mixing. With an increase in <i>K</i>, the impact of the cracks on the macroscopic failure of the rock increased. As for the specimens containing multiple cracks, there were multiple failure modes in the same specimen, including shear failure, crack shear or tensile failure, and the intersection of natural cracks and newly generated macroscopic cracks.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-023-03319-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4421792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the method of pressure relief by roof cutting and absorbing energy in deep coal mines 深部煤矿切顶吸能卸压方法研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-06 DOI: 10.1007/s10064-023-03313-1

Haojie Xue, Qi Wang, Bei Jiang, Zhenhua Jiang, Yue Wang, Yubing Huang, Manchao He

{"title":"Study on the method of pressure relief by roof cutting and absorbing energy in deep coal mines","authors":"Haojie Xue, Qi Wang, Bei Jiang, Zhenhua Jiang, Yue Wang, Yubing Huang, Manchao He","doi":"10.1007/s10064-023-03313-1","DOIUrl":"10.1007/s10064-023-03313-1","url":null,"abstract":"<div><p>With the mining depth increases, under the condition of high stress and intensive disturbance, large deformation problem of roadway surrounding rock is more serious. Therefore, energy design criteria of support materials to control large deformation of roadway surrounding rock are established. Based on energy design criteria, the method of pressure relief by roof cutting and absorbing energy is proposed, which can be noted that the stress transfer path of overburden roof is cut off by using the technique of directional roof cutting to make roadway in the low stress state, and constant-resistance anchor cable with extraordinary characteristics of absorbing energy can effectively control the roof subsidence and deformation of roadway. A field engineering case using this method was performed in Guotun coal mine with burial depth of 890 m; field test results are as follows: (1) compared with the influence zone without roof cutting, support stress, advancing abutment stress, and lateral abutment stress in the influence zone of roof cutting is significantly reduced; (2) constant-resistance anchor cables have large deformation ability and extraordinary absorbing energy characteristic to meet energy design criteria; (3) compared with the influence zone without roof cutting, micro-seismic events, maximum energy, and total energy are obviously reduced in the influence zone of roof cutting; (4) the displacement of the gob-side roadway by using this method meets the engineering requirements. The field engineering case proves that this method can make the gob-side roadway in the state of low stress condition and improve the ability of absorbing energy of support system to effectively control large deformation of roadway surrounding rock.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-023-03313-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4257471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CPT-based evaluation of silt/clay contents and the shear wave velocity of seabed soils in the Yellow River delta 基于cpt的黄河三角洲海底土壤粉土/粘土含量及剪切波速评价

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-06 DOI: 10.1007/s10064-023-03296-z

Xuesen Liu, Tao Liu, Hailiang Wang, Zhongnian Yang, Yuxue Cui, Zhengyi Xu, Xianzhang Ling

{"title":"CPT-based evaluation of silt/clay contents and the shear wave velocity of seabed soils in the Yellow River delta","authors":"Xuesen Liu, Tao Liu, Hailiang Wang, Zhongnian Yang, Yuxue Cui, Zhengyi Xu, Xianzhang Ling","doi":"10.1007/s10064-023-03296-z","DOIUrl":"10.1007/s10064-023-03296-z","url":null,"abstract":"<div><p>The fine content (FC) and shear wave velocity (V<sub>s</sub>) are important references for the soil classification and physical or mechanical properties evaluation. It is the spatial variability of soils that leads to large errors in existing CPT (cone penetration test)-based geotechnical evaluation methods in various locations, particularly in submarine environment. In this paper, quantifying relationships of V<sub>s</sub> with refined silt content (SC) or clay content (CC) from FC were established using CPTs and shear wave velocity tests at the shallow banks of the Yellow River Delta, effectively improving the accuracy of V<sub>s</sub> calculations in fine-grained soils. Results have shown that the relationship between SC or CC and V<sub>s</sub> can be described by an exponential function, meanwhile similar variation in FC and V<sub>s</sub> in shallow and submerged soils of the Yellow River Delta. The focus area decreases in SC and increases in CC with distance from shore. The V<sub>s</sub> gradually increases with penetration depth.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4254277","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

Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial–torsional tests 轴扭试验下空心圆柱体砂岩强度、变形及破坏特征

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-05 DOI: 10.1007/s10064-023-03295-0

Yue Jiang, Hui Zhou, Jingjing Lu, Yang Gao, Zhen Li

{"title":"Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial–torsional tests","authors":"Yue Jiang, Hui Zhou, Jingjing Lu, Yang Gao, Zhen Li","doi":"10.1007/s10064-023-03295-0","DOIUrl":"10.1007/s10064-023-03295-0","url":null,"abstract":"<div><p>Due to the excavation disturbance in deep tunnel, the stress magnitude and orientation changed obviously, which affects the mechanical properties of surrounding rock and the stability of tunnel. The axial–torsional test is adopted to study the influence of stress orientation on the strength and deformation behavior of four sandstones, using the self-developed hollow cylinder torsional apparatus for rock. The results show that the peak shear strength of sandstone is nonlinear, positively correlated with axial stress, and negatively correlated with the rotation angle of the principal stress axis. The stress–strain curve obtained under the rotation of principal stress axis can be divided into compaction, elasticity, yield, and softening stages. Furthermore, the sensitivity of the crack damage threshold of various sandstone is analyzed. The results show that the rotation of the principal stress axis can aggravate rock damage, and the greater the initial damage degree, the stronger the impact. Finally, the evolution mechanism of the internal rock cracks under the axial–torsional test is discussed by analyzing the rock failure characteristics, and it can be seen that the initiation, propagation, and coalescence of cracks are not only affected by stress magnitude, but also the stress orientation. Moreover, the crack propagation model considering principal stress axis rotation is verified and improved experimentally. The results of this research are of great significance to studying the influence of stress orientation and provide an important method to investigate the mechanical properties of rock with complex stress states comprehensively.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4212386","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

Strength reduction strategy for rock slope stability using the variation principle based on the Hoek–Brown failure criterion 基于Hoek-Brown破坏准则变分原理的岩质边坡稳定性强度折减策略

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-05 DOI: 10.1007/s10064-023-03303-3

Shihong Hu, Liang Li, Lianheng Zhao, Shi Zuo, Dongliang Huang

{"title":"Strength reduction strategy for rock slope stability using the variation principle based on the Hoek–Brown failure criterion","authors":"Shihong Hu, Liang Li, Lianheng Zhao, Shi Zuo, Dongliang Huang","doi":"10.1007/s10064-023-03303-3","DOIUrl":"10.1007/s10064-023-03303-3","url":null,"abstract":"<div><p>Rotational failure may exhibit in homogenous rock slopes, and the critical sliding surface of a rock slope based on the rotational failure mechanism is not a single log-spiral under nonlinear failure criterion. This work proposed an advanced nonlinear analysis method for estimating the seismic stability of homogenous slope in rock masses which is governed by the generalized Hoek–Brown failure criterion. According to the virtual power principle, the critical slope height is obtained using particle swarm algorithm. Strength reduction technique is further introduced to explore the reduction strategy of the strength parameters of the Hoek–Brown failure criterion. The outcomes indicate that the factor of safety obtained by simultaneously reducing the unconfined compressive strength <i>σ</i><sub><i>ci</i></sub> and material parameter <i>m</i><sub><i>i</i></sub> is in good agreement with the results of other methods. In addition, two cases are re-analyzed to illustrate the applicability of the proposed method, and the maximum discrepancy with existing results is about 8%. The effects of strength parameters, slope angle, and seismic quasi-static coefficients on the slope stability factor and critical sliding surface are analyzed, which shows that the seismic load and the Hoek–Brown parameters have a significant effect on the slope stability factor. There is no need to assume the expression of the potential sliding surface, which can provide theoretical support and a useful reference for the nonlinear analysis of slope stability.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4215277","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

A case study of drilling process monitoring for geomaterial strength assessment along hydraulic rotary drillhole 液压旋转钻孔钻孔过程监测岩土材料强度评估实例研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-05 DOI: 10.1007/s10064-023-03323-z

X. F. Wang, P. Peng, W. V. Yue, Z. G. Shan, Z. Q. Yue

{"title":"A case study of drilling process monitoring for geomaterial strength assessment along hydraulic rotary drillhole","authors":"X. F. Wang, P. Peng, W. V. Yue, Z. G. Shan, Z. Q. Yue","doi":"10.1007/s10064-023-03323-z","DOIUrl":"10.1007/s10064-023-03323-z","url":null,"abstract":"<div><p>It is challenging yet essential to identify the different processes and operations for the wide utilization of factual data during the current normal drilling. In this paper, the complete digital factual data of the hydraulic rotary drill project are recorded in real-time series along a 38-m-deep drillhole. A total of five processes with the associated individual operations are identified by the digitalization results as the inserting drill bit and rods process, the rotary stirring process, the hydraulic rotary coring process, the core cutting process, and the retrieving drill bit and rods process. The operations of net drilling can be selected by the statistical results from the hydraulic rotary coring process. According to the factual data, 461 linear zones and 10 geomaterial-type zones with the corresponding constant drilling speed are presented in the curve of bit advancement depth versus the net drilling time. The analysis results show that as the in situ mechanical property (or coring-resistant strength) of the drilled geomaterials increases, the corresponding constant drilling speed decreases. The spatial distributions of linear zones with similar constant drilling speeds can represent the stratum distributions of homogeneous geomaterial. The digitalization results provide the valuable reference for quantitative descriptions of the full hydraulic rotary drilling process and the in situ mechanical profile with the factual drilling data.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4211997","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: 1

Study on damage anisotropy and energy evolution mechanism of jointed rock mass based on energy dissipation theory 基于能量耗散理论的节理岩体损伤各向异性及能量演化机制研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-04 DOI: 10.1007/s10064-023-03278-1

Bingqian Yan, Hongpu Kang, Jianping Zuo, Peitao Wang, Xiangshang Li, Meifeng Cai, Jianzhong Liu

{"title":"Study on damage anisotropy and energy evolution mechanism of jointed rock mass based on energy dissipation theory","authors":"Bingqian Yan, Hongpu Kang, Jianping Zuo, Peitao Wang, Xiangshang Li, Meifeng Cai, Jianzhong Liu","doi":"10.1007/s10064-023-03278-1","DOIUrl":"10.1007/s10064-023-03278-1","url":null,"abstract":"<div><p>The rapid development of roads and scenic spots in the suburbs of Beijing has formed a large number of artificial slopes, creating conditions for geological disasters such as collapse. It is urgent to study the influence of joint development and rainfall on the energy evolution mechanism in the process of geological disasters and rock mass failure. The deformation and failure process of jointed rock mass was accompanied by the accumulation and release of energy. To explore the damage anisotropy characteristics and the energy evolution law of jointed rock mass, nuclear magnetic resonance (NMR), triaxial compression, and acoustic emission (AE) tests of rock specimens were carried out. The pore evolution law of jointed rock specimen was analyzed, and the variation law of mechanical parameters and acoustic emission of rock specimen was studied. By establishing the energy evolution constitutive model of jointed rock specimens, the variation laws of total energy, elastic strain energy, and dissipative energy during deformation and failure of jointed rock masses were analyzed, and the energy evolution mechanism during damage and failure of jointed rock masses was revealed. The failure mode characteristics of jointed rock specimens with different dip angles under different confining pressures were analyzed.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4165689","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: 1

Reactivation mechanism of old landslide triggered by coupling of fault creep and water infiltration: a case study from the east Tibetan Plateau 断层蠕变与水入渗耦合诱发老滑坡的再活化机制——以青藏高原东部为例

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-04 DOI: 10.1007/s10064-023-03290-5

Yongshuang Zhang, Sanshao Ren, Xiaoyi Liu, Changbao Guo, Jinqiu Li, Junbo Bi, Lina Ran

{"title":"Reactivation mechanism of old landslide triggered by coupling of fault creep and water infiltration: a case study from the east Tibetan Plateau","authors":"Yongshuang Zhang, Sanshao Ren, Xiaoyi Liu, Changbao Guo, Jinqiu Li, Junbo Bi, Lina Ran","doi":"10.1007/s10064-023-03290-5","DOIUrl":"10.1007/s10064-023-03290-5","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>\u0000The platforms of old landslides triggered by historical earthquakes have often been important residential and agricultural places in active tectonic regions. In recent years, many old landslides have been reactivated due to various causes. Previous studies have shown that the hydrodynamic effect is an important triggering factor for landslide reactivation. However, as an old landslide has undergone a long consolidation period, the permeability of deposits is generally very low, and surface water can hardly infiltrate into deep zones of landslide deposits. Through field investigation, it is found that many old landslides are reactivated due to the coupled action of water infiltration and cracks in the east Tibetan Plateau. The cracks are controlled by fault creep in the initial formation process. In this paper, taking the Chashushan old landslide in the upstream of Jinsha River as a case study, field investigation, experimental study, numerical simulation, and PS-InSAR technique are performed to investigate the reactivation mechanism of the old landslide. The influences of cracks, rainfall, and canal leakage on old landslide reactivation are discussed. The cracks controlled by fault creep provide channels or media for the rapid infiltration of surface water, which is the triggering factor of landslide reactivation. The results in this paper can provide an important reference for research on the reactivation mechanism and risk control of old landslides in the east Tibetan Plateau and even in active tectonic areas around the world.</p></div></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"82 8","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4168057","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: 2