Results 131 to 140 of about 823 (175)

Staged and geometry-adapted support for coal mine roadways under weak rock conditions: a numerical study. [PDF]

Sci Rep
Guo Y, Ma Q, Zhong S.
europepmc   +1 more source

Mechanism and control technology of roadway floor heave deformation and failure under the influence of repeated mining in multiple coal seams. [PDF]

Sci Rep
Yuping F, Yiming R, Yongliang H, Chuantian L.   +3 more
europepmc   +1 more source

Mechanism and control of pillar bidirectional reinforcement during pre-cut roof gob-side entry driving in gently inclined coal seams. [PDF]

Sci Rep
Chen D, Yang X, Zhang Z, Zhao W, Jing X, Shan Z, Chang J, Zhang Z.   +7 more
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Study on Similar Materials for Weakly Cemented Medium and Indoor Excavation Test. [PDF]

Materials (Basel)
Hu S, Yang L, Guo S, Zhang C, Yin D, Dou J, Cheng Y.   +6 more
europepmc   +1 more source

Experimental study on the structural failure characteristics and load-bearing mechanism of anchored fractured rock mass. [PDF]

Sci Rep
Liu M, Li Z, Du F, Wang W, Zhai M, Shi J.   +5 more
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Simulation of directional crack propagation by energy-absorbing blasting in deep gob-side entry retaining under different lateral pressure coefficients. [PDF]

PLoS One
Liu N, Guo C, Bao S, Wang T, Zhang F, Qin Z.   +5 more
europepmc   +1 more source

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Optimization of combined support in soft-rock roadway

Tunnelling and Underground Space Technology, 2020
Ground support and reinforcement technology can greatly enhance the stability of underground excavations and make the underground infrastructure safer. This paper investigates a combined support methodology aiming at increasing the stability and safety of soft-rock roadways in the Zhongguan iron mine in China via analysis of the field structure of weak
Ruslan Puscasu, Peng Lin
exaly   +5 more sources

Mechanism analysis and control technology of surrounding rock failure in deep soft rock roadway

Engineering Failure Analysis, 2020
Abstract In order to research the surrounding rock control technology of deep soft rock roadway, the air returning cross-cut of Xinhu Coal Mine in Bozhou City was taken as an example to study the failure characteristics, roadway deformation mechanism and surrounding rock repair technology.
ChengXing Zhao, YingMing Li, Gang Liu, Xiangrui Meng   +3 more
exaly   +2 more sources

Coal Mine Roadway Stability in Soft Rock: A Case Study

Rock Mechanics and Rock Engineering, 2013
Roadway instability has always been a major concern in deep underground coal mines where the surrounding rock strata and coal seams are weak and the in situ stresses are high. Under the high overburden and tectonic stresses, roadways could collapse or experience excessive deformation, which not only endangers mining personnel but could also reduce the ...
Baotang Shen, Shen Baotang
exaly   +2 more sources

Deformation characteristics of surrounding rock of broken and soft rock roadway

Mining Science and Technology (China), 2009
Abstract A similar material model and a numerical simulation were constructed and are described herein. The deformation and failure of surrounding rock of broken and soft roadway are studied by using these models. The deformation of the roof and floor, the relative deformation of the two sides and the deformation of the deep surrounding rock are ...
Jin-xi WANG, Ming-yue LIN, Duan-xin TIAN, Cun-liang ZHAO   +3 more
openaire   +1 more source