Results 161 to 170 of about 1,187 (218)

Full-process deformation monitoring and failure characteristics analysis of damaged coal under 3D laser scanning technology. [PDF]

Sci Rep
Jiang P, Liu Y, Li G.
europepmc   +1 more source

Study on the dynamic response and roadways stability during mining under the disturbance of hard roof break. [PDF]

Sci Rep
Peng K, Chang L, Dechuan Y, Shihui L, Ruiju J.   +4 more
europepmc   +1 more source

Experimental-simulation analysis on mechanical degradation and energy evolution characteristics of sandstone under water-rock coupling effects. [PDF]

Sci Rep
Yongjiang Y, Wenjing G, Jiaming L, Zhiqiang W, Xu D.   +4 more
europepmc   +1 more source

Deformation theory and energy mechanism of cyclic dynamic mechanical damage for granite in the diversion tunnel under cyclic loading-unloading. [PDF]

iScience
Yang R, Xu Y.
europepmc   +1 more source

Evolution of the roof caving and fracture zones during mining of close range coal seams. [PDF]

Sci Rep
Li J, Zhou W, Deng P, Yan J, Chang S.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Intense rockburst impacts in deep underground construction and their prevention

Canadian Geotechnical Journal, 2015
In the last few decades, in both mining and civil engineering projects, deeper excavations have been carried out than in the past. With this increase in depth, rocks may overstress and rock failures can occur during excavation. When competent rock strata are encountered under high stress conditions, these failures can vary from superficial spalling to
Mazaira, A. (Alejandro), Koníček, P. (Petr)   +1 more
openaire   +2 more sources

Prevention of rockburst by guide holes based on numerical simulations

Mining Science and Technology (China), 2009
Abstract We studied variations in the stress field around guide holes drilled during tunnel excavation to understand the mechanical mechanism by which these holes help prevent rockburst. The study used elasto-plastic analysis of a circular chamber under non-axisymmetrical loads.
Qi-hu ZHU, Wen-bo LU, Jin-shan SUN, Yi LUO, Ming CHEN   +4 more
openaire   +1 more source

Applicability of energy-absorbing support system for rockburst prevention in underground roadways

International Journal of Rock Mechanics and Mining Sciences, 2020
Abstract Rockburst is one of the leading disasters in mining and rock engineering causing serious casualties and property losses. A major engineering challenge for underground roadways in mines experiencing significant seismicity is the performance of the support system.
Gui-Feng Wang, Geng Li, Lin-Ming Dou, Zong-Long Mu, Si-Yuan Gong, Wu Cai   +5 more
openaire   +1 more source

Deep-hole directional fracturing of thick hard roof for rockburst prevention

Tunnelling and Underground Space Technology, 2012
Abstract Thick hard roof in coal mines is usually a significant factor that induces dynamic disasters, such as rockburst. This study introduces a new technology called directional hydraulic fracturing characterized by cutting out an initial groove in the borehole and then injecting high pressure liquid to break the rock.
Hu He, Linming Dou, Jun Fan, Taotao Du, Xinglin Sun   +4 more
openaire   +1 more source