Results 41 to 50 of about 13,620,505 (264)

Influence of joint fissure occurrence on stress distribution of coal wall in large mining height

Scientific Reports
In order to ensure the stability of coal wall of fully mechanized mining face with large mining height, Aiming at the prominent problem that the rib spalling rate of coal wall in fully mechanized mining face with large mining height is high and is ...
Weibin Guo, Yichen Gao, Gang Wang
doaj   +2 more sources

Study on Fracture and Stress Evolution Characteristics of Ultra-Thick Hard Sandstone Roof in the Fully Mechanized Mining Face with Large Mining Height: A Case Study of Xiaojihan Coal Mine in Western China

Advances in Civil Engineering, 2018
Ultra-thick hard sandstone roofs present high thickness, poor delamination, and wide caving range. The strata pressure of the working face during actual mining increases, having a significant influence on the safe mining of the working face.
Feng Ju, Meng Xiao, Zequan He, Pai Ning, Peng Huang   +4 more
doaj   +2 more sources

Analysing the application of a flexible formwork pre-cast wall driving roadway along goaf in a large mining height face

Scientific Reports
The technology of building a retaining roadway along goaf or a protecting roadway with a small coal pillar has been developed and applied for many years, and a satisfactory supporting effect has been obtained in medium–thick coal seam and thin coal seam ...
Xiao-Fan Cao, Xiaoli Wang, Hui-Hui Liu, Song Wang, De-Yong Wang, Zhong-Tong Liu   +5 more
semanticscholar   +2 more sources

Feasibility Study on Roof Cutting and Pressure Relief Technology of Gob-side Wall Retaining in Large Mining Height Working Face

Meikuang Anquan, 2020
To solve the problem of large deformation of concrete wall caused by large bearing capacity of gob-side wall retaining in large mining height working face, the concrete bearing structure of gob-side brick retaining was determined for the site conditions of Wangzhuang Coal Industry.
SHEN Hao, ZHANG Baisheng, HE Xin
openaire   +3 more sources

Mechanism and control of strong ground pressure in shallow buried ultra-large mining height working face with directly overlying double key strata

Scientific Reports
When mining in shallow buried ultra-large mining height working faces with directly overlying double key strata, the working face is often accompanied by periodic strong dynamic load weighting.
Ze-Kun Wang, Hua-Lei Zhang, Chuan-Ming Li, Jiang-Bin Liu   +3 more
semanticscholar   +2 more sources

Analysis of overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam

矿业科学学报, 2017
In order to grasp the overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam, this paper study the ultra thick coal seam in Tongxin coal mine.The fracture ...
Hou Yunbing, He Shangsen, Zhou Dianqi, Han Shuai, Zhou Yu   +4 more
doaj   +1 more source

Coal seam gas control technology in working face with low content and high gas emission

Meikuang Anquan, 2021
In order to solve the problem of increasing gas emission caused by ultra-high intensity mining in fully mechanized top coal caving face with large mining height, starting from the gas emission law of fully mechanized caving face with large mining height,
ZHANG Dongxu
doaj   +1 more source

Study on overburden structure and working resistance of supports in deep buried coal seam

Meikuang Anquan, 2023
In view of the characteristics of complex overburden structure and strong mining pressure in deep coal seam working face with large mining height, taking Yangchangwan Coal Mine as the engineering background, the mechanical model of overburden rock ...
LIU Hongtao, HAN Zhou, HAN Zijun, YANG Zhihua, HE Weisheng, WANG Sichen, LUO Zilong
doaj   +1 more source

Research on Water-Conducting Fractured Zone Height under the Condition of Large Mining Height in Yushen Mining Area, China [PDF]

, 2023
Accurately predicting the development height of the water-conducting fracture zone (HW) is imperative for safe mining in coal mines, in addition to the protection of water resources and the environment.
Dong Feng, Pengfei Hou, Enke Hou, Xiaoshen Xie   +3 more
core   +1 more source

Numerical Simulation and Analysis of Influencing Factors of Coal Wall Failure in Fully Mechanized Mining Face with Large Mining Height

Meikuang Anquan, 2020
Aiming at the problems that the coal wall rib spalling in the working face affects the economic benefits of fully mechanized mining technology with large mining height, the 3-1 coal seam occurrence conditions of Hongqinghe Coal Mine is taken as the ...
YIN Ruibin, KANG Tianhe, LI Chao, WANG Lilong
doaj   +1 more source