Results 21 to 30 of about 4,014 (247)

Overburden movement law in strip filling mining of upward mining faces

Scientific Reports
Strip filling mining significantly improves coal recovery rates and fosters sustainable development in the coal industry. To investigate the overburden movement patterns of strip filling mining, a mine in Tuokexun was selected as the study site.
Lingjin Huang, Weiming Guan, Yu Guan, Hongchao Zhao, Zhiyi Zhang, Yingyuan Wen   +5 more
doaj   +2 more sources

Optimization numerical simulation of staggered distance scheme for double coal seam mining in Yushen Mining Area

Meikuang Anquan, 2021
In order to study the optimal scheme of staggered distance mining in double coal seam and its influence on the key strata of overburden structure, take the geological conditions of Yushen Mine Area as the background, the optimal scheme was selected from
SUN Xueyang, LU Mingjiao, LI Cheng, MIAO Lintian
doaj   +1 more source

Mechanism of stress-loaded rockburst in fully mechanized top-coal caving stope with deep overburden

Meitan xuebao, 2023
The stress-loaded rockburst is a unique type of rockburst that occurs in some fully mechanized top-coal caving stopes with deep thick overburden, its occurrence mechanism is still unclear, leading to the failure to effective prevention and even serious ...
Xiang ZHANG, Sitao ZHU, Fuxing JIANG, Xiufeng ZHANG, Shidong LI, Chao WANG, Jinhai LIU, Yang CHEN, Tao ZHOU, Jiajie LI, Chun ZHU   +10 more
doaj   +1 more source

Cosmic muon flux measurement and tunnel overburden structure imaging [PDF]

Journal of Instrumentation, 2020
We present a cosmic ray muon tomographic experiment for measuring the muon flux and imaging the tunnel overburden structures in Changshu, China. The device used in this study is a tracking detector based on the plastic scintillator with SiPM technology, which can be conveniently operated in field works.
R. Han, Q. Yu, Z. Li, J. Li, Y. Cheng, B. Liao, L. Jiang, S. Ni, Z. Yi, T. Liu, Z. Wang   +10 more
openaire   +2 more sources

Analysis of overburden structure and evolution characteristics of hard roof mining in extremely thick coal seam

Meitan kexue jishu, 2023
The mining of extremely thick coal seam form a large space stope, the fracture disturbance of hard roof spreads to a wide range, the working face weighting has the characteristic of “strong mine pressure”, it is obviously different from rock burst ...
YU Bin, KUANG Tiejun, YANG Jingxuan, ZHU Weibing   +3 more
doaj   +1 more source

Computer Numerical Simulation of Sluice Structure on Deep Overburden Foundation [PDF]

Advances in Intelligent Systems Research, 2015
This paper adopts the space combination finite element method to calculate the whole displacement and stress of chamber structure and foundation, calculates the overall stability against sliding and anti-floating stability safety coefficient of the lock chamber structure via the rigid body limit equilibrium method, and simulates the excavation and ...
Xuanmao Peng, Weiping Hu, Xuan Wang
openaire   +1 more source

Coevolution mechanism and branch of pillar‐overburden fissures in shallow coal seam mining

Energy Science & Engineering, 2023
The large‐scale mining of coal resources promotes the formation of section coal pillar groups between working faces. The overlying strata are supported by coal pillars, which leads to the formation of a unique fracture‐bearing structure in the key ...
Jie Zhang, Yifeng He, Tao Yang, Wenyong Bai, Jianjun Wu, Qingsong Zhuo, Shoushi Gao   +6 more
doaj   +1 more source

STUDY OF OVERBURDEN TUFF ROCKS AND DEVELOPMENT ON ITS BASIS OF LIGHTWEIGHT STRUCTURAL CONCRETE [PDF]

Periódico Tchê Química, 2021
Introduction. The work presents the research results on the development of technology for lightweight structural concrete based on overburden tuff rocks. To develop the technology of lightweight structural concrete, overburden tuff rock (Almaty region of the Republic of Kazakhstan) is used, which is formed during the extraction of volcanic tuff for ...
Zhumadilova, Zhanar O., Zhuginissov, Maratbek T., Khamza, Yerlan Y.   +2 more
openaire   +1 more source

The Effect of Overburden Depth on the Damage of Underground Structure during Earthquake

IOP Conference Series: Earth and Environmental Science, 2020
Abstract Nowadays underground structures are essential components in urban areas and their number are increasing continuously. Generally, underground structures show a better performance during seismic actions than structures above ground.
Shrestha Rajyaswori, Xinping Li, Yi Luo, Mandal Abhay Kumar, Kun Xu   +4 more
openaire   +1 more source

Analysis of Overburden Structure and Pressure‐Relief Effect of Hard Roof Blasting and Cutting [PDF]

Advances in Civil Engineering, 2019
When studying the pressure‐relief effect of hard roof blasting and cutting, the roof‐cutting position and angle obviously affect the stability of the rock surrounding the gob‐side entry (GSE). In this paper, control of the large deformation of rock surrounding the GSE is evaluated on the basis of the overlying structure and pressure‐relief principle ...
Hao Liu, Jin Dai, Jinquan Jiang, Pu Wang, Jiqiang Yang   +4 more
openaire   +2 more sources