Results 121 to 130 of about 1,364 (186)

Research on rock burst prevention and control technology of steep extra-thick coal seam

Abstract In order to study the prevention and control effect of the emergency relief measures of water injection before blasting on the sharp inclined ultra-thick coal seam, the south mining area of Wudong Coal Mine in Urumqi Mining area of China was taken as the research object. Based on the special geological conditions of the mine field, the
Kaihua Liang, Hong Zhao, Yang Li, Weihui Pan, Fuwu Ma, Nannan LI   +5 more
openaire   +1 more source

Mechanism and control strategies for asymmetric floor heave in extra-thick coal seam roadways under high stress. [PDF]

Sci Rep
Zhang J, Sun J, Wang B, Yang T, He Y, Gao S, Qin G, Zhang Y.   +7 more
europepmc   +1 more source

Safety evaluation method of bottom coal thickness in thick coal seam roadway

In recent years, the number of roadway floor rock burst accidents is increasing, which seriously restricts the safe production of the mine. Therefore, safety evaluation method of bottom coal thickness in thick coal seam roadway was studied.
Yunliang Tan, Shilin Song, Xuesheng Liu, Xiufeng Zhang   +3 more
core   +1 more source

Mechanism of reverse deformation increase in the virgin coal rib compared to the pillar rib of the gob-side entry in an extra-thick coal seam. [PDF]

Sci Rep
He W, Chen D, Zhu H.
europepmc   +1 more source

Occurrence State and Genesis of Large Particle Marcasite in a Thick Coal Seam of the Zhundong Coalfield in Xinjiang

The Junggar Basin contains a large amount of coal resources and is an important coal production base in China. The coal seam in Zhundong coalfield has a large single-layer thickness and high content of inertinite, but large particle Fe-sulphide minerals ...
Wenfeng Wang, Xin Li, Hayerhan Xadethan, Shuo Feng, Ning Lü, Xue Wu, Jijun Tian   +6 more
core   +1 more source

Study on optimization of surrounding rock support in the predriven roadway during final mining of an extra thick coal seam. [PDF]

Sci Rep
Yin S, Zhao X, Wang E, Kang Q, Hua Y.
europepmc   +1 more source

Simulation analysis of pressure relief effect of upward mining in the lower protective layer (group) of deep extra-thick coal seam. [PDF]

Sci Rep
Qin G, Zhang Z, Cao J, Ma J, Zhang X.
europepmc   +1 more source

Study on hydraulic fracturing prevention and control of rock burst in roof of deep extra-thick coal seam roadway group. [PDF]

Sci Rep
Lv H, Cheng Z, Xie F, Pan J, Liu F.
europepmc   +1 more source

Ground control strategies for longwall top-coal caving panel in extra-thick coal seams with thick-hard roof. [PDF]

Sci Rep
Wang R, Zhang WG, Wang HS, Yu ZJ, Zhang Q.   +4 more
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