Results 1 to 10 of about 82,086 (215)

Ground control strategies for longwall top-coal caving panel in extra-thick coal seams with thick-hard roof [PDF]

Scientific Reports
Thick-hard roof fracturing presents a significant challenge for disaster prevention in longwall mining. This study investigates the 15,311 south working face and develops a mechanical model to analyze energy release during both initial and cyclic roof ...
Rui Wang, Wei-guang Zhang, Hao-sen Wang, Zai-jiang Yu, Qiang Zhang   +4 more
doaj   +2 more sources

Failure mechanisms and stability control of roadways in thermally damaged rock under asymmetric stress: a case study [PDF]

Scientific Reports
Stability maintenance of deep roadways in thermally damaged rock masses presents complex challenges under asymmetric stress conditions. This study investigates the failure mechanisms and proposes a control strategy using an integrated methodology of ...
Zhiqiang Wang, Lu Lin, Jingkai Li, Binyu Liu, Xinyu An, Peng Wang   +5 more
doaj   +2 more sources

Research on the failure law and actual measurement of floor in extremely close distance thick coal seam mining [PDF]

Scientific Reports
The vigorous mining of domestic coal resources is accompanied by the complexity and diversification of the conditions of coal seams. Multi seam and close distance coal seam mining have become normalized.
Yupei Deng, Weidong Pan, Chao Ma, Shiqi Liu, Zhining Zhao, Cang Deng, Meng Li   +6 more
doaj   +2 more sources

Mechanisms of stress distribution influenced by numerical model size and goaf parameters in multi-coal seam mining [PDF]

Scientific Reports
Multi-seam coal mining often leads to complex stress redistribution due to strong interlayer interactions. This study employs FLAC3D to investigate the influence of numerical model dimensions and goaf constitutive representation on stress distribution in
Nan Wang, Gustavo André Paneiro, Yang Li, Yikun Liu   +3 more
doaj   +2 more sources

Real-Time Recognition Method for Key Signals of Rock Fracture Acoustic Emissions Based on Deep Learning

Sensors, 2023
The characteristics of acoustic emission signals generated in the process of rock deformation and fission contain rich information on internal rock damage.
Lin Sun, Lisen Lin, Xulong Yao, Yanbo Zhang, Zhigang Tao, Peng Ling   +5 more
doaj   +1 more source

Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age

Frontiers in Earth Science, 2023
The strength evolution law of concentrated full tailings is closely related to the storage construction method, especially the growth law of shear strength with curing age.
Sha Wang, Sha Wang, Guodong Mei, Guodong Mei, Weixiang Wang, Weixiang Wang, Yali Wang, Yali Wang, Yiyuan Cui, Yiyuan Cui, Lijie Guo, Lijie Guo, Yifan Chu, Yifan Chu   +13 more
doaj   +1 more source

Creep properties and resistivity-ultrasonic-AE responses of cemented gangue backfill column under high-stress area

International Journal of Mining Science and Technology, 2021
To investigate the creep and instability properties of a cemented gangue backfill column under a high-stress area, the uniaxial compression creep tests were conducted by single-step and multi-step loading of prismatic samples made of cemented gangue ...
Hongyu Ran, Yuxia Guo, Guorui Feng, Tingye Qi, Xianjie Du   +4 more
doaj   +1 more source

Experimental Study on Direct Tensile Properties of Cemented Paste Backfill

Frontiers in Materials, 2022
Cemented paste backfill (CPB) has been increasingly utilized in mines for efficient mineral obtaining and regional ground support. To guarantee the work performance, the mechanical properties of CPB have long been a topic of study among researchers.
Lijie Guo, Lijie Guo, Xiaopeng Peng, Xiaopeng Peng, Yue Zhao, Yue Zhao, Guangsheng Liu, Guangsheng Liu, Guoxing Tang, Guoxing Tang, Andrew Pan   +10 more
doaj   +1 more source

Optimized algorithm of auxiliary drainage scheme in tailings reservoir rainfall prediction: illustrated with a case study

Frontiers in Earth Science, 2023
Under forecasting rainfall condition, rainfall flows into the tailings pond instantaneously, causing water level rising rapidly, thus threatening the safety of the tailings pond.
Guodong Mei, Guodong Mei, Sha Wang, Sha Wang, Lijie Guo, Lijie Guo   +5 more
doaj   +1 more source

Remediation of grassland subsidence and reduction of land occupation with tailings backfill technology: a case study of lead-zinc mine in Inner Mongolia, China

Frontiers in Environmental Science, 2023
The mining industry provides essential mineral resources for human society’s development. However, this industry generates a large quantity of waste material while rapidly extracting valuable elements from ore, such as processed tailings.
Xinzheng Chen, Xinzheng Chen, Lijie Guo, Lijie Guo, Yabo Zhou, Wenyuan Xu, Wenyuan Xu, Yue Zhao, Yue Zhao   +8 more
doaj   +1 more source