International Journal of Rock Mechanics and Mining Sciences最新文献

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Seismic stability of cracked rock slopes based on physics-informed neural networks 基于物理信息神经网络的裂隙岩质边坡地震稳定性研究
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-22 DOI: 10.1016/j.ijrmms.2025.106147
Zilong Zhang , Zhengwei Li , Daniel Dias
{"title":"Seismic stability of cracked rock slopes based on physics-informed neural networks","authors":"Zilong Zhang ,&nbsp;Zhengwei Li ,&nbsp;Daniel Dias","doi":"10.1016/j.ijrmms.2025.106147","DOIUrl":"10.1016/j.ijrmms.2025.106147","url":null,"abstract":"<div><div>Cracks have been proven to significantly impact soil slope stability, whereas their mechanisms influencing rock slope stability have not been effectively investigated. Within the upper-bound theorem framework, the non-linear Hoek-Brown yield envelope is divided into multiple segments using a series of tangent lines to establish a three-dimensional (3D) multi-segment failure mechanism and a discontinuity surface is introduced into the first segment to account for the presence of a pre-existing crack at the slope crest. A novel physics-informed neural network (PINN) is then developed to calculate the seismic acceleration induced by seismic waves. The PINN-based framework has the advantage of describing the spatiotemporal characteristics of seismic waves while adhering to the geometrical constraints of slopes. To acquire the space-dependent seismic force-generated work rates, a slice integration strategy is introduced, followed by the derivation of the stability number with seismic action. Determining the critical stability number of cracked rock slopes involves identifying a critical failure mechanism characterized by cracks that most adversely affect slope stability in terms of depth and location. This process is a multivariable optimization scheme supported by the innovative Marine Predators Algorithm (MPA). Results indicate that seismic excitation and the existence of cracks considerably narrow the stress distribution range on the Hoek-Brown strength envelope, leading to a reduction in rock slope stability. The PINN model can provide a more realistic distribution characteristic of seismic loadings within slopes, taking into account the slope geometry, rock properties, and seismic wave characteristics. Considering the powerful transformation capabilities of Fourier analysis, the proposed PINN-based seismic analysis framework demonstrates the potential for incorporating more realistic seismic data into an analytical framework of slope stability analysis.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106147"},"PeriodicalIF":7.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Effect of Fe-Ni metals on ablation, cavity formation, and recrystallization in laser processing of chondrite meteorite 铁镍金属对球粒陨石激光加工中烧蚀、空腔形成和再结晶的影响
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-20 DOI: 10.1016/j.ijrmms.2025.106148
Yiwei Liu , Yanlong Zheng , Yi Hu , Shimin Liu , Haizeng Pan , Xuhai Tang
{"title":"Effect of Fe-Ni metals on ablation, cavity formation, and recrystallization in laser processing of chondrite meteorite","authors":"Yiwei Liu ,&nbsp;Yanlong Zheng ,&nbsp;Yi Hu ,&nbsp;Shimin Liu ,&nbsp;Haizeng Pan ,&nbsp;Xuhai Tang","doi":"10.1016/j.ijrmms.2025.106148","DOIUrl":"10.1016/j.ijrmms.2025.106148","url":null,"abstract":"<div><div>Laser processing is an effective method for cutting extraterrestrial rocks, making it potentially useful for space mining. By comparing laser processing of terrestrial basalt and the Hammadah al Hamra 346 (HaH 346) chondrite meteorite, we investigated the influence of iron-nickel (Fe-Ni) metals on laser-induced melting, cavity formation, and recrystallization. Experimental results revealed that the presence of Fe-Ni metals significantly reduces the depth of laser-induced cavities in HaH 346 meteorite while increasing their width, as the melting metal strongly absorbs laser energy. X-ray computed tomography results demonstrated that the laser-induced cavities in the HaH 346 meteorite are much shallower than those in basalt. Microstructural analysis indicated that Fe-Ni metals in HaH 346 recrystallize into ellipsoidal crystal formations, while silicates form complex and nest-like structures. Furthermore, the temperature of Fe-Ni metal during laser irradiation is significantly lower than that of silicate and mixed zones. Due to the vacuum environment of space, Fe-Ni metals are widely present in planetary rocks. Our study highlights the potential of laser cutting for future space mining and the key differences between laser cutting on Earth and in space.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106148"},"PeriodicalIF":7.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Effect of chloride salts on shear behavior of cemented tailings backfill (CTB) mixed with mine water in coastal regions 氯盐对沿海地区矿用水尾砂胶结充填体抗剪性能的影响
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-14 DOI: 10.1016/j.ijrmms.2025.106157
Wancheng Zhu , Liujun Yang , Chen Hou , Gengjie Zhu , Xige Liu , Peng Liang
{"title":"Effect of chloride salts on shear behavior of cemented tailings backfill (CTB) mixed with mine water in coastal regions","authors":"Wancheng Zhu ,&nbsp;Liujun Yang ,&nbsp;Chen Hou ,&nbsp;Gengjie Zhu ,&nbsp;Xige Liu ,&nbsp;Peng Liang","doi":"10.1016/j.ijrmms.2025.106157","DOIUrl":"10.1016/j.ijrmms.2025.106157","url":null,"abstract":"<div><div>For underground mines in the vicinity of coastal regions, using the mine water to prepare cemented tailings backfill (CTB) is an ideal synergistic treatment of the solid waste (tailings) and liquid waste (saline water). High concentrations of ions in mine water such as Cl<sup>−</sup>, Na<sup>+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, may affect the hydration process of binders and thus alter the shear behavior of CTB. In this study, shear tests were carried out on CTB when the single chloride salts such as NaCl, CaCl<sub>2</sub>, MgCl<sub>2</sub> and the mixed saline mine water were used to prepare the CTB. Before the shear test, the CT scanning was utilized to quantify the microscopic structure. The results show that the addition of MgCl<sub>2</sub> strongly weakens the shear strength than that of NaCl, whereas the addition of CaCl<sub>2</sub> enhances the shear strength, depending on the effect of ions on the hydration process and pore structure. Additionally, the CTB mixed with mining water produces a lower shear strength at 3 days and a higher shear strength at 7 and 28 days than that with deionized water. Furthermore, the shear strength is not positively correlated with the porosity, which indicates the importance of morphology of hydration products on the shear strength of CTB mixed with chloride salts. Further, two types of stress-displacement behavior, which is closely related to the shear strength of CTB, are observed. The results are helpful to understand the effect of chloride salt on the shear behavior of CTB.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106157"},"PeriodicalIF":7.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 novel adaptable analog material for simulating transversely isotropic rocks: mechanical properties and applications 一种用于模拟横向各向同性岩石的新型适应性模拟材料:力学特性及应用
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-12 DOI: 10.1016/j.ijrmms.2025.106145
João Paulo Giro , Alain Zanella , Regis Mourgues , Olivier Galland , Mariano Martín Ramirez
{"title":"A novel adaptable analog material for simulating transversely isotropic rocks: mechanical properties and applications","authors":"João Paulo Giro ,&nbsp;Alain Zanella ,&nbsp;Regis Mourgues ,&nbsp;Olivier Galland ,&nbsp;Mariano Martín Ramirez","doi":"10.1016/j.ijrmms.2025.106145","DOIUrl":"10.1016/j.ijrmms.2025.106145","url":null,"abstract":"<div><div>Transversely isotropic rocks (TIRs) are widespread in geological formations, and understanding their mechanical behavior is crucial for geotechnical and geoengineering applications. This study presents the development of a novel analog material that reproduces the directional mechanical properties of TIRs. The material is composed of quartz sand, mica flakes, and gelatin in adjustable proportions, allowing control over strength and stiffness anisotropy. Uniaxial compressive strength (UCS) and direct shear tests were conducted to evaluate mechanical responses across different anisotropy angles. Results show that the analog material replicates key features of natural TIRs, including directional variations in strength and fracture modes. In UCS tests, the anisotropy angle (β) governs the transition between tensile and shear failure. In direct shear tests, the orientation angle (α) significantly affects shear strength. Higher gelatin concentrations increase cohesion and Young's modulus without changing the internal friction angle, while mica content reduces overall strength and stiffness. Comparisons with published data on sedimentary and metamorphic rocks confirm the mechanical representativeness of the material. Its simplicity, tunability, and reproducibility make it a useful tool for scaled physical modeling of anisotropic rock behavior in the laboratory. This approach supports the experimental investigation of deformation and failure mechanisms in layered rock masses under controlled conditions.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106145"},"PeriodicalIF":7.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Study on freeze-thaw damage and mechanical properties of fractured rock mass grouting reinforcement in alpine region open-pit mines 高寒地区露天矿裂隙岩体注浆加固冻融损伤及力学特性研究
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-10 DOI: 10.1016/j.ijrmms.2025.106143
Xin Wang , Wenqiang Mu , Lianchong Li , Tianhong Yang , Miaomiao Bai , Shigui Du
{"title":"Study on freeze-thaw damage and mechanical properties of fractured rock mass grouting reinforcement in alpine region open-pit mines","authors":"Xin Wang ,&nbsp;Wenqiang Mu ,&nbsp;Lianchong Li ,&nbsp;Tianhong Yang ,&nbsp;Miaomiao Bai ,&nbsp;Shigui Du","doi":"10.1016/j.ijrmms.2025.106143","DOIUrl":"10.1016/j.ijrmms.2025.106143","url":null,"abstract":"<div><div>To investigate the degradation of \"grout-rock\" interfaces caused by freeze-thaw (F-T) cycles in fractured rock bodies following grouting in cold regions, this study systematically examines the shear stress characteristics and F-T resistance of ordinary cement grout (OC), graphene oxide-modified grout (OC-I), and microsilica-modified grout (OC-II) under saturated conditions. Utilizing scanning electron microscopy (SEM), computed tomography (CT), and digital image correlation (DIC) analysis, the research characterizes the F-T damage modes, damage evolution stages, and variations in shear strength among the different grout types. The findings indicate that ordinary cement grout demonstrates inadequate F-T resistance, exhibiting a significant reduction in shear strength under F-T cycles. In contrast, the graphene oxide-modified grout enhances interface density, thereby delaying the initiation and propagation of cracks; however, the performance improvement is limited at elevated F-T cycle counts. The microsilica-modified grout exhibits the highest F-T resistance, as the calcium silicate hydrate (C-S-H) gel it produces effectively fills pores and microcracks. After 45 F-T cycles, the retention of shear strength exceeds 60 %, which is approximately double that of the ordinary grout. Furthermore, the microsilica-modified grout enhances the cementation properties at the interface and improves crack control capabilities, thereby increasing the stability of grouting materials in F-T environments. This research provides reliable and durable material option for rock reinforcement and protective engineering in cold regions.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Evolution of pore-fracture structure and mechanical properties of coal under dry-wet cycle 干湿循环作用下煤的孔隙破裂结构及力学性能演化
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-09 DOI: 10.1016/j.ijrmms.2025.106146
Hongwei Zhou , Yanpeng Cao , Senlin Xie , Zelin Liu , Wenhao Jia
{"title":"Evolution of pore-fracture structure and mechanical properties of coal under dry-wet cycle","authors":"Hongwei Zhou ,&nbsp;Yanpeng Cao ,&nbsp;Senlin Xie ,&nbsp;Zelin Liu ,&nbsp;Wenhao Jia","doi":"10.1016/j.ijrmms.2025.106146","DOIUrl":"10.1016/j.ijrmms.2025.106146","url":null,"abstract":"<div><div>A water dry-wet (DW) cycle, triggered by water injection into coal seam, affects the pore-fracture structure (PFS) of the coal, thus changing the storage environment of coalbed methane (CBM). In order to study the effect of DW cycle on the PFS, a nuclear magnetic resonance technology (NMR) is employed to measure the PFS after different DW cycles by carrying out online loading experiments with mechanical equipment. Experimental results demonstrate an initial increase followed by stabilization in pore-fracture distribution as DW cycles escalates. The evolution process of the PFS is divided into the development and connectivity stage. The development stage is characterized by the development of individual pore-fracture, the growth rate of adsorption space (AS) is larger than that of seepage space (SS), and the increase of pore-fractures leads to the enhancement of non-homogeneity of SS. The connectivity stage is characterized by the interconnection of pore-fractures, the growth rate of the SS is larger than that of the AS, and the connectivity of pore-fractures to the decrease of the non-homogeneity of the SS. Empirical and generalized models, derived from offline experimental results, eloquently describe the evolution of PFS through DW cycles. The coal matrix becomes more brittle, and the compressibility and stress sensitivity of the SS increase with an increasing number of cycles. A conformable derivative compression model of the SS is established based on online experimental results. The correlations between DW cycle damage and compression model parameters are established by fitting analyses. The mechanism of the influence of water injection into coal seam on the environment of CBM is revealed from a microscopic point of view by establishing the relationship between the DW cycle and the PFS of coal.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106146"},"PeriodicalIF":7.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Oscillatory finite-time singularities in rockbursts 岩爆中的振荡有限时间奇点
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-08 DOI: 10.1016/j.ijrmms.2025.106156
Qinghua Lei , Didier Sornette
{"title":"Oscillatory finite-time singularities in rockbursts","authors":"Qinghua Lei ,&nbsp;Didier Sornette","doi":"10.1016/j.ijrmms.2025.106156","DOIUrl":"10.1016/j.ijrmms.2025.106156","url":null,"abstract":"<div><div>Forecasting violent rockbursts remains a formidable challenge due to significant uncertainties involved. One major uncertainty arises from the intermittency of rock failure processes, typically characterised by a series of progressively shorter quiescent phases punctuated by sudden accelerations, rather than a smooth continuous progression towards the final breakdown. This non-monotonic evolution of rock mass deformation complicates rockburst prediction, challenging conventional time-to-failure models that often assume a smooth power law accelerating behaviour. Here, we introduce a generalised time-to-failure model called log-periodic power law singularity (LPPLS) model to effectively capture the intermittent dynamics of damage and rupture processes in rock leading up to violent rockbursts. We perform parametric and nonparametric tests on 11 historical rockburst events at three underground mines, documenting empirical evidence and providing theoretical arguments to demonstrate the significance of log-periodic oscillatory power law finite-time singularities. Log-periodicity in these rockburst events is likely driven by the interaction of subparallel propagating cracks, the diffusion of stress-triggering processes, or the interplay between stress drop and stress corrosion. Our results and insights obtained have significant implications for not only understanding but also forecasting rockbursts, as recognising and characterising log-periodicity can help transform intermittency from traditionally perceived noise into valuable predictive information.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106156"},"PeriodicalIF":7.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Physical modeling of high extraction columns in block cave mining 块状洞室开采高抽采柱的物理建模
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-07 DOI: 10.1016/j.ijrmms.2025.106140
Nicolás Carreño , Raúl Castro , René Gómez , Claudio Segovia
{"title":"Physical modeling of high extraction columns in block cave mining","authors":"Nicolás Carreño ,&nbsp;Raúl Castro ,&nbsp;René Gómez ,&nbsp;Claudio Segovia","doi":"10.1016/j.ijrmms.2025.106140","DOIUrl":"10.1016/j.ijrmms.2025.106140","url":null,"abstract":"<div><div>High extraction columns are one of the newest trends emerging in block cave mining. These columns present significant benefits in terms of preparation costs. However, they are also associated with significant challenges such as high stresses, the presence of fine material, risk of dilution, and the need to modify conventional mining designs. Given these challenges, understanding the behavior of the draw column during extraction is necessary to develop accurate mine designs and extraction plans in these environments. Then, for this study of gravity flow within high draw columns, experiments were conducted on a large 3D physical model scale model simulating isolated and uniform extraction in a high draw column (&gt;600 m) composed of coarse and fine material. Two layouts, El Teniente and a Rectangular layout, were tested, the latter with spacings above the industry average. The results of isolated draw show that with fine granulometry the diameter of the Isolated Extraction Zone is 20 % smaller than that observed in the extraction column composed of coarse and fine granulometry. Additionally, it was found that both the geometry of the drawbell and the apex influence the Height of the Interaction Zone (HIZ) under uniform extraction. The El Teniente layout obtained an HIZ of 7.5 cm (15 m), while in the square layout, despite its large spacing, no stagnant material was observed above the crown pillar. Also as expected, the diameter of the flow zone is defined by the coarse fragmentation when the coarse material is below the fine fragmentation. Finally, based on the setup used here, the main contribution is that larger spacings do not produce a significant reduction in reserve recovery because the interaction height is related mainly to the extraction level pillar geometry and drawbell design.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106140"},"PeriodicalIF":7.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Finite element-based analysis of blasting rock fragmentation using a digital sieving algorithm 基于有限元的爆破岩石破碎数字筛分算法分析
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-06 DOI: 10.1016/j.ijrmms.2025.106141
Kaiwen Song , Xin Wei , Xiaoqing Wei , Yi Luo , Dengxing Qu , Tingting Liu , Xinping Li
{"title":"Finite element-based analysis of blasting rock fragmentation using a digital sieving algorithm","authors":"Kaiwen Song ,&nbsp;Xin Wei ,&nbsp;Xiaoqing Wei ,&nbsp;Yi Luo ,&nbsp;Dengxing Qu ,&nbsp;Tingting Liu ,&nbsp;Xinping Li","doi":"10.1016/j.ijrmms.2025.106141","DOIUrl":"10.1016/j.ijrmms.2025.106141","url":null,"abstract":"<div><div>Fragmentation serves as a critical blasting quality indicator in hydropower engineering, directly influencing rock extraction efficiency, operational quality, and economic costs. This study introduces a simulation method based on finite element digital sieving to address the limitations of traditional finite element methods (FEM) in predicting fragmentation. The method integrates finite element results with damage mechanics theory, employing a calibrated damage threshold (<em>D</em><sub>0)</sub> to differentiate high-damage element (HDE) from slow-damage element (SDE). Fragment size distribution is determined through damage-size correlation mapping and a maximum Feret diameter algorithm, establishing quantitative connections between numerical simulations and actual fragmentation patterns. Validation through Split Hopkinson Pressure Bar (SHPB) testing at Tongcheng Pumped Storage Power Station enabled precise calibration of critical simulation parameters. The results demonstrate reliable prediction of fragmentation distributions, providing an effective computational framework for practical engineering implementation. The conforming-to-dynamite mass ratio (CDR) metric demonstrates that insufficient decoupling coefficients compromise detonation efficiency, whereas excessive values promote oversized fragment generation, providing valuable insights for optimizing blasting design in practice.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106141"},"PeriodicalIF":7.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Identifying different classes of geoacoustic events using machine learning 使用机器学习识别不同类别的地声事件
IF 7 1区 工程技术
International Journal of Rock Mechanics and Mining Sciences Pub Date : 2025-05-04 DOI: 10.1016/j.ijrmms.2025.106144
Jian Wang , Yujun Zuo , Longjun Dong , Xianhang Yan
{"title":"Identifying different classes of geoacoustic events using machine learning","authors":"Jian Wang ,&nbsp;Yujun Zuo ,&nbsp;Longjun Dong ,&nbsp;Xianhang Yan","doi":"10.1016/j.ijrmms.2025.106144","DOIUrl":"10.1016/j.ijrmms.2025.106144","url":null,"abstract":"<div><div>Microseismic monitoring is widely used to detect instability hazards. Specifically, the quick and effective identification of microseismic events, such as noise, explosions, and drilling activities, is critical for determining mine stability and safety. This study employed features including the mean and standard deviation of frequencies extracted by short-time Fourier transform (STFT), short-term energy, total energy, and waveform length as multivariate parameters for event classification. These features were then standardized and integrated, and techniques such as KMeansSMOTE and OneSidedSelection were used to balance the dataset distribution through oversampling and undersampling. K-fold cross-validation combined with an advanced retention network deep neural network architecture was used to generate a comprehensive geoacoustic event classification model (GSEC) to classify different types of geoacoustic events, such as microseisms, blasts, drilling, and noise. In-depth comparisons were then performed using common deep-learning models, such as a convolutional neural network, long short-term memory network, residual network, dense network, and transformer. The proposed GSEC model outperformed the baseline models in terms of key performance metrics such as accuracy, precision, recall, and the F1 score. Thus, the developed GSEC model represents a new and effective tool for improving mine safety management.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"192 ","pages":"Article 106144"},"PeriodicalIF":7.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
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