Results 31 to 40 of about 2,878 (183)

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

Research on comprehensive detection and visualize of hidden cavity goaf

Scientific Reports, 2022
AbstractAt present, the research on goaf at home and abroad mainly focuses on four aspects: detection technology, stability evaluation technology, governance technology and quality control technology. The most important of the above four aspects is goaf detection technology. In order to ensure the accuracy and precision of exploration, many geophysical
Bo Cao, Jian Wang, Han Du, Yabin Tao, Guangwei Liu   +4 more
openaire   +3 more sources

Simulations of goaf surface subsidence via filling control

PLOS ONE, 2022
Xincheng Gold Mine is taken as an example to investigate the ground subsidence that results from filling. Both numerical simulations and simulation experiments are conducted to simulate the deformation process at the stope roof and bottom from excavation and filling.
Yong Yang, Minsi Zhang, Gaojian Hu, Kai Guan   +3 more
openaire   +5 more sources

Study on the Effect of Pore Evolution on the Coal Spontaneous Combustion Characteristics in Goaf

Fire
Understanding the characteristics of coal spontaneous combustion (CSC) in goaf under different porosities is crucial for comprehending the mechanism of CSC and its prevention and control.
Jinglei Li, Hao Xu, Genshui Wu
doaj   +1 more source

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

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Mechanisms of Roadway Instability and Coupled Control Technology for Working Face Passing Through Fault Zones

Energy Science &Engineering, EarlyView.
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, Yitao Yan, En Wang, Xubo Zhao, Kanglei Han   +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

Observation of “Three Zones” of Spontaneous Combustion in Goaf Under the Influence of Gas Drainage in Outburst Coal Seam

Meikuang Anquan, 2020
In view of the working face of coal and gas outburst, adopting the measures of gas drainage and outburst elimination will increase the air leakage in the goaf, and then change the flow field in the goaf, resulting in too long oxidation zone in the goaf,
LI Xin, LIU Dongming, TANG Hui, WANG Bo
doaj   +1 more source