Results 41 to 50 of about 2,809 (148)

Deformation and Failure Model Test of Binary Structure Anti-dip Excavation Slope under the Action of Seismic Load

工程科学与技术, 2012
:The slope, where Wangjiaping landslide was located in Longmenshan Town, Pengzhou City, was selected as a typical example of binary structure anti-dip slope with excavation failure in this study, and indoor physical model tests were carried out on ...
afayou
doaj  

Overburden structural evolution and mechanism of strong ground pressure in ultra-large mining height longwall face with thick hard roof

Meitan xuebao
Ultra-large mining height faces with multiple thick and hard strata (MTHS) exhibit highly complex overburden structural evolution, intense support loading, and frequent dynamic events, posing serious challenges to roof stability and safe, efficient ...
Jianzhong LI, Fuqiang GAO, Jinfu LOU, Zhizeng HUANG, Zhen ZHANG, Jinhong YANG, Chaodong XI, Pengjie LI, Feixiang LE   +8 more
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Key Strata Identification of Overburden Based on Magnetotelluric Detection: A Case Study

Applied Sciences, 2020
The severe overburden failure induced by high-intensity mining is the essence of eco-environmental problems in Northwest China, and the degree of overburden failure is closely related to the location and failure of key strata (KS), which controls part of
Yunguang Wang, Wenbing Guo, Erhu Bai, Yuxi Wang   +3 more
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Characteristics and Laws of Overburden Failure Caused by Repeated Mining of Multi Coal Seams

International Journal of Energy, 2023
With the depletion of coal resources, people began to mine deeper coal resources. In response to the special geological conditions of multiple coal seams, scientific and safe mining of deep coal seams has great practical significance and value. This article analyzes and studies the characteristics and laws of overburden failure caused by multi coal ...
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Analytical solution and experimental validation for roof deformation of pier-column-type partial backfilling under variable-stiffness support via initial parameter method

Yantu gongcheng xuebao
To investigate roof deformation and overburden failure, this study combines theoretical modeling with physical simulation to compare full and partial backfilling. Results show that, based on elastic foundation beam theory and the initial parameter method,
SONG Gaofeng 1, WANG Lele 1, JIN Songli 1, GAO Denghui 2, JI Yuxin 1, XU Guanghui 1, ZHANG Pengfei 3
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Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science & Engineering
With the continuous advancement of coal mining technology, the mining height and length of working faces in China have increased, and ultra‐long fully mechanized mining faces with large‐mining heights have become the prevailing layout trend in modern ...
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
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Numerical simulations of the overburden stability in underfilling zones during continuous mining and continuous backfilling of coal mines

Meitian dizhi yu kantan
Objective and MethodCoals serve as a predominant energy source in China. However, coal mining has resulted in increasingly pronounced ecological issues such as ground subsidence and solid waste accumulation.
Lang LIU, yixiao LUO, Mengbo ZHU, Jun HE, Huisheng QU, Huaijun DUAN, Baoning WEI, zhizhen LIU   +7 more
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Overburden Damage Degree-Based Optimization of High-Intensity Mining Parameters and Engineering Practices in China’s Western Mining Area

Geofluids, 2020
China’s western mining area is an arid and semiarid area with a fragile ecological environment, and the high-intensity mining activities aggravate ecological damage.
Xiang He, Cun Zhang, Penghua Han
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Study on evolution law of overburden stress under different strip coal pillar widths

Meikuang Anquan
The plastic failure of strip-style goaf areas due to weathering, groundwater erosion, and overburden load is one of the main causes of geological disasters in the surrounding rocks of goaf areas. Revealing the stress evolution laws under the expansion of
Shenghu LUO, Zhihui MENG, Chengyang TIAN, Zhuangzhuang YAN, Jiabo GAO, Duanyang XIA   +5 more
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Deformation prediction analysis of sandstone coal mine goaf based on discrete element method and probability integration method

Frontiers in Materials
Accurate prediction of goaf settlement is essential for evaluating surface movement and deformation and for understanding overburden failure mechanisms in sandstone coal mine goafs.
Gao Ruonan, Chen Xi, Wang Yuchen, Liu Gen, Li Jin   +4 more
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