Results 51 to 60 of about 5,156 (170)
Application of Transient Electromagnetic Method in Detection of Goaf
, 2020 To study the method of using transient electromagnetic method to detect the goaf of the integrated mine, on the basis of studying the principle of transient electromagnetic method and investigating the background noise, the goaf in the industry square ...
SUN Yingfeng, LUO Xiao, GAO Yirui, WANG Pengpeng, DONG Chuanlong, HE Yongchang
core +1 more source
Energy Science &Engineering, EarlyView.As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu +4 more
wiley +1 more source
Energy Science &Engineering, EarlyView.This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu +4 more
wiley +1 more source
Research on meatal goaf detection: a case study on the Duan Village-Leigou monohydrallite goaf
, 2016 The increasing scope and depth of the mining formed more and more goaf. The geological disasters such as collapse in goaf bring the hidden danger to the people.
Zhao Shuxia, Wang Wanliang
core +1 more source
Energy Science &Engineering, Volume 14, Issue 9, Page 4470-4485, September 2026.This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin +4 more
wiley +1 more source
A New Classification Method of Mine Goaf Ground Activation Considering High-Speed Railway Influence
Frontiers in Earth Science, 2022 With the rapid development of high-speed railways in China, it is inevitable that some of the lines will have to traverse through the mine goaf ground, and there is little research on whether the “activation” of the foundation of the mine goaf ground ...
Lian-wei Ren +5 more
doaj +1 more source
Analysis of water-filling process in goaf of closed mine
, 2018 In order to research water-filling problem in goaf of closed mine, taking Daihe Coal Mine as research object， mining space method was used to calculate water-filling volume in goaf of the closed mine according to geological and hydrogeological conditions
WU Jiwen +5 more
core +1 more source
Energy Science &Engineering, Volume 14, Issue 8, Page 3625-3637, August 2026.This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin +4 more
wiley +1 more source
Study on influence law of non-uniform overburden load on goaf subsidence in open-pit mine
Meikuang Anquan, 2021 In order to study the influence law of non-uniform overburden load on the goaf subsidence of open-pit mine, based on mining subsidence theory and technology, a subsidence model of goaf was established.
SU Erhuan, CHEN Tao, NIU Jingfu, LIU Yu
doaj +1 more source
Grouting Reinforcement Mechanism and Multimodel Simulation Analysis of Longwall Goaf
, 2021 Grouting reinforcement is one of the most effective methods to enhance the stability of the goaf, and its scheme selection, hole location, and parameter determination directly affect the success or failure of goaf treatment. On the basis of discussion of
Xiaoli Guo, Xueliang Li, Guang Sun
core +1 more source