Results 91 to 100 of about 844 (164)

Study on evolution law of water-conducting fracture zone in steeply inclined coal seam longwall fully-mechanized top-coal caving face

Meikuang Anquan
To study the development height of the water-conducting fracture zone (WCFZ) in the steeply inclined longwall fully-mechanized top-coal caving face, the 202 fully-mechanized caving face in the west No.2 mining area of Wangjiashan Coal Mine was taken as ...
Panshi XIE, Jiarui FANG, Bo ZHANG, Weidian LIN, Junjun XING   +4 more
doaj   +1 more source

A Methodology For Determining Gob Permeability Distributions And Its Application To Reservoir Modeling Of Coal Mine Longwalls [PDF]

Methane can be a significant hazard in coal mine longwalling operations and extensive methane mitigation techniques are employed by coal mine operators.

core  

Development Law of Water-Conducting Fracture Zones in Overburden above Fully Mechanized Top-Coal Caving Face: A Comprehensive Study

Although it is of great significance to master the height of the water-conducting fracture zone (WCFZ) to prevent coal mine disasters and ensure safe production, the most important thing is to predict the height and range of the WCFZ ahead of the working
Jiancheng Che, Tongxu Hu, Bo Li, Taihu Huo, Tao Hu, Kaiqiang Han, Chunhua Song   +6 more
core   +1 more source

Draw control optimization along the production drift in sublevel caving mines

, 2016
The amount of material extracted from each blasted ring in sublevel caving mines is vital when deciding the overall mine production target. The orientation of the production drifts is normally perpendicular to the strike of the orebody, and rings are ...
Gustafson, Anna,, Boeg-Jensen, Patricia,, Schunnesson, Håkan,, Shekhar, Gurmeet,   +3 more
core  

Study on the law of ore dilution and loss and control strategies under brow line failure in sublevel caving mining

To improve ore recovery ratio and the quality of medium-length hole blasting in non-pillar sublevel caving method, this study first investigated the effects of brow line failure on rock movement and ore recovery indexes based on rock blasting ...
Ronghua Guo, Jian Ming, Yuehao Pan, Zhihui Li, Jingpeng Xie   +4 more
core   +1 more source

The deformation characteristics and the prefabricated crack pressure relief stability control of a small coal pillar roadway under stress superposition. [PDF]

Sci Rep
Cheng S, Ma Z, Li Y, Zhang X.
europepmc   +1 more source

Mine pressure behavior law and fault activation response of normal fault zones in thick coal seams under mining disturbance. [PDF]

Sci Rep
Xin T, Ji Y, Wang J, Wang B, Bai G, Jin J.   +5 more
europepmc   +1 more source

Research on the integrated technology of bearing structure reconstruction and support control in high risk area of top coal roadway in thick coal seam. [PDF]

Sci Rep
Xiaokang S, Bacha S, Heng Z, Xiaojing L, Xiaozhen C, Kai W, Hua Z.   +6 more
europepmc   +1 more source

Study on crack propagation law of overlying strata in the process of small coal pillar mining in inclined extra-thick coal seam. [PDF]

Sci Rep
Lu W, Zhao P, Jin Q, Jin H, Li S, Bai J.
europepmc   +1 more source

Investigating the factors influencing vertical stress ahead of the undercutting line in block caving. [PDF]

Sci Rep
Cao Y, Hua X, Zhai S, Li H, Zhang H.
europepmc   +1 more source