Results 41 to 50 of about 7,653 (230)

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Underground Goaf Parameters Estimation by Cross-Iteration with InSAR Measurements

Remote Sensing, 2021
Determining the geographic location and spatial distribution of underground goaf is of great significance for the prevention of mining subsidence hazards and the detection of illegal mining.
Weihao Zhang, Jiancun Shi, Huiwei Yi, Yan Zhu, Bing Xu   +4 more
doaj   +1 more source

Early warning platform and its potential for non-coal mine goaf monitoring based on an optical fiber sensing network [PDF]

, 2018
Remote monitoring of a mine goaf (defined as that part of the mine from which the mineral deposit has been wholly or partially removed) is challenging, to create an early warning of potential mine collapse. In this paper, optical fiber sensing technology
Grattan, K. T. V., Hu, B., Jiang, L., Liu, T., Song, G., Sun, T., Sun, Z., Sun, Z., Wu, Q.   +8 more
core   +1 more source

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

Energy Science &Engineering, EarlyView.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 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

Substantiation of chamber parameters under combined open-cast and underground mining of graphite ore deposits [PDF]

, 2011
The move from open-cast to combined mining method of developing Zavalyevsky deposit of graphite is considered in the paper. The selection of chamber dimension satisfying conditions of long-term stability is one of the questions for scientific ...
Busylo, V.I., Morozova, T., Saveliev, V., Savelieva, T.   +3 more
core   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
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, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

3D geological model reconstruction and collapse risk evaluation of old goaf in Dunqiu iron mine

Scientific Reports
The complexity of goafs put forward higher requirements for detection methods. A comprehensive detection method for old goaf is proposed, that is, determining the plane distribution range of old goaf by using high-precision magnetic method, determining ...
Hailong Wang, Zhenhua Zhao, Lin Han, Zhenjiang Luo   +3 more
doaj   +1 more source

Prediction model for spontaneous combustion hazard zone in downward ventilation gob of gently inclined coal seam

Meikuang Anquan, 2023
To analyze the distribution characteristics of regions with potential spontaneous combustion hazards in the goaf under descending ventilation in gently inclined coal seams with different spontaneous combustion tendencies, a seepage model of the inclined ...
Zenghui ZHANG
doaj   +1 more source

Research on meatal goaf detection: a case study on the Duan Village-Leigou monohydrallite goaf

International Journal of Geology, 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. Therefore, it is particularly important to accurately locate the goaf in the mining area. This article take a section of the Duan Village-Leigou monohydrallite goaf in Mianchi county of Henan ...
Zhao Shuxia, Wang Wanliang
openaire   +1 more source