Results 11 to 20 of about 2,809 (148)

Overburden movement laws in thin bedrock workfaces under thick backfilled loose bodies [PDF]

Scientific Reports
A detailed investigation was conducted on the geological conditions of thin bedrock workfaces under thick backfilled loose bodies in the first panel of the 22-upper coal seam at Shigetai Coal Mine.
Wenxiang Zheng, Chao Wei, Shuai Guo, Zhipeng Zhuang, Changhui Shi   +4 more
doaj   +2 more sources

Overburden failure characteristics and fracture evolution rule under repeated mining with multiple key strata control [PDF]

Scientific Reports
To master the overburden structure failure and fracture evolution law under multi-key stratum control during repeated mining in coal seams, this study takes the superimposed mining faces of 6# and 7# coal seams in Xinjiang mining area as the research ...
Sun Chaoshang, Shi Chaoyang, Zhu Zhiming, Lin Haixiao, Li Zhenhua, Du Feng, Cao Zhengzheng, Lu Pengtao, Liu Lin   +8 more
doaj   +2 more sources

Study on the impact of stress effects on gas extraction in thick inclined coal seam caving faces [PDF]

Scientific Reports
In order to study the development of overburden fractures and the distribution characteristics of the “three zones” in extra-thick coal seams, a rota-table physical similarity simulation test platform was used to analyze the deformation and failure ...
Liang Chen
doaj   +2 more sources

Characterizing the deformation, failure, and water-conducting fractures evolution of shallow weakly cemented overburden under coal mining

Frontiers in Earth Science
Understanding the collapse mechanisms of shallow, multi-layered, weakly cemented overburden is key to safe and efficient coal mining in central and western China.
Zhenhua Li, Yandong Zhang, Xuefeng Gao, Xuefeng Gao, Dan Ma, Dan Ma, Limin Fan, Guodong Li, Xiaolei Li, Min He, Zheng Cheng   +10 more
doaj   +3 more sources

Stress Distribution and Failure Characteristics of Stope Overburden of an Inclined Coal Seam [PDF]

Geofluids, 2021
The stress distribution, failure depth, and shape and range of overlying strata of the stope are important bases for the prevention of roof water hazards and determination of reasonable locations of roof roadways. Based on the hydrogeological data of the E9103 workface, FLAC numerical simulation software was used to establish a numerical calculation ...
Xin Liu, Jian Sun, Yong Yang
openaire   +3 more sources

Measurement of overburden failure zones in close-multiple coal seams mining

International Journal of Mining Science and Technology, 2021
In the Kaiping Coal field, mining of five coal seams, located within 80 m in the Kailuan Group, #5, #7, #8, #9 and #12 coal seam, is difficult due to small interburden thickness, concentrated stress distributions, high coal seam metamorphism, and complex geological conditions.
Yang Li, Yuqi Ren, Syd S. Peng, Haozhou Cheng, Nan Wang, Junbo Luo   +5 more
openaire   +2 more sources

Study on Overlying Strata Movement in Mining Adjacent Working Face of Extra Thick Seam

Meikuang Anquan, 2020
In order to master the movement law of overlying strata after coal mining in adjacent working faces, FLAC finite element software was used to simulate the sequential mining of adjacent working faces in a mine, and the stress, displacement and plastic ...
LAI Xingping, LI Junwei, CUI Feng, SHAN Pengfei
doaj   +1 more source

Calculation of Subsidence due to Longwall Mining with Overburden Grouting and Its Application

Geofluids, 2022
This paper presents a prediction method of mining-induced surface subsidence due to longwall mining with overburden grouting, which has been proven an effective method to mitigate the overburden failure. This paper proposes a partial overburden grouting (
Hewen Ma, Yadong Ji, Shidong Wang
doaj   +1 more source

Mechanical Properties and Failure Mechanism of the Weakly Cemented Overburden in Deep Mining

Minerals, 2022
With increases in the mining depth and area in the Ordos coal field, the failure law of the super thick sandstone in the Zhidan group leads to frequent disasters, such as rock bursts and mine earthquakes, which have become a significant issue, restricting large-scale continuous mining.
Guojian Zhang, Guangli Guo, Wei Wei, Jun Wang, Huaizhan Li, Qiu Du   +5 more
openaire   +1 more source

Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill

Shock and Vibration, 2021
In order to explore the stability of overburden rock and the development height of water flowing fractured zone in roadway filling mining, based on the movement and deformation mechanism of overburden rock, the mechanical analysis of overburden stability
Yu Dong, Yucheng Huang, Jifang Du, Fei Zhao   +3 more
doaj   +1 more source