Results 1 to 10 of about 823 (175)

Bolting technology of serious swelling soft rock roadway

Meikuang Anquan, 2021
For reducing the large roof deformation and bolt failure problems in serious swelling and soft rock roadway, influence factors of roadway stability and bolting technology in serious swelling soft rock roadway are studied based on engineering analogy ...
GAO Jiancheng, ZHANG Hongwei, RONG Hai, ZHAO Xiangzhuo, XIN Jinxin
doaj   +2 more sources

Physical model study on the mechanism of floor heave for the deep-buried roadway excavated in soft rock of gently inclined thin strata [PDF]

Scientific Reports
Strata structure is an important factor affecting floor heave of deep soft rock roadway, however, the mechanism of floor heave induced by the rock structure has not been fully understood, so it is still necessary to study the floor heave of deep-buried ...
Feng Chen, Eryu Wang, Chengyu Miao, Xiaoming Sun, Peng Song, Chengwei Zhao   +5 more
doaj   +2 more sources

Collaborative control technology and application of support and modification for soft-rock roadway in a kilometer-deep coal mine [PDF]

Scientific Reports
The soft-rock roadways in kilometer-deep coal mines are often damaged by large deformation and have to be periodically expanded and repaired, which seriously restricts the safe and efficient production of coal mines.
En Wang, Shuaifeng Yin, Xuexi Chen, Ze Gao, Aiguo Sun, Yitao Yan   +5 more
doaj   +2 more sources

Deformation Mechanism and Support Technology of Deep and High-Stress Soft Rock Roadway [PDF]

Advances in Civil Engineering, 2021
In this study, the analysis and control of stability of surrounding rock in deep fractured soft rock roadway located in the underground mine of Jinfeng gold mine in Guizhou Province, China, has been investigated.
Lujing Zheng, Yujun Zuo, Yafei Hu, Wei Wu   +3 more
doaj   +2 more sources

Roadway deformation during riding mining in soft rock

International Journal of Mining Science and Technology, 2012
Abstract “Riding mining” is a form of mining where the working face is located above the roadway and advances parallel to it. Riding mining in deep soft rock creates a particular set of problems in the roadway that include high stresses, large deformations, and support difficulties.
Xianbiao Mao, Meimei Feng
exaly   +2 more sources

Principle and practice of coupling support of double yielding shell of soft rock roadway under high stress

International Journal of Mining Science and Technology, 2014
In order to ensure the safety and stability of the soft rock roadway under high stress, based on the characteristics of the surrounding rock deformation and failure, this paper presented the support technology “coupling support of double yielding shell”,
Chong Li, Zhongliang Wang, Tao Liu
exaly   +3 more sources

Roadway Instability Mechanism of Weakly Consolidated Soft Rocks and Support Technologies

Geofluids, 2023
During tunneling in weakly consolidated soft rock strata, lithology, joints, and fractures of rock strata play an important role in controlling overall roof stability of the roadway.
Jinlong Cai, Min Tu, Luxiu Chai, Fengyan Qin, Zhengfeng Shen   +4 more
doaj   +2 more sources

Study of Soft Rock Roadway Support Technique

Procedia Engineering, 2011
AbstractSoft rock prevalent in coal-bearing strata in China, a lot of soft rock is buried deep in the larger role of high stress by the formation, and maintenance of the roadway is very difficult to dig. Therefore, the soft rock tunnel in the control theory and practice of in-depth study on the maintenance of soft rock and coal mine production safety ...
exaly   +2 more sources

Risk assessment and mechanism of rock burst for deep soft coal roadways

Scientific Reports
The occurrence of rock burst is related to the physical properties of coal-bearing strata. Under the same mining conditions, the excavation of soft coal seams at 1000 m or deeper has a lower risk of rock burst.
Xinyuan Tian, Linming Dou, Shun Hu, Xiaotao Ma, Fangzhou Lu   +4 more
doaj   +3 more sources

Elastoplastic analysis of surrounding rock in weakly cemented soft rock roadways and its support practice [PDF]

Scientific Reports
Abstract The effects of rock softening and shear dilation in the plastic zone are considered to examine the stability of surrounding rock in deep, weakly cemented soft rock roadways. An elastic-soft fracture mechanical model of the surrounding rock is developed, from which the analytical solutions for the stress and displacement fields are ...
Zhang, Jihua, Rui, Qiao, Li, Xinwei, Yang, Yushun, Wang, Ge, Chen, Jiarui, Shen, Wei, Wang, Chengwu, Liu, Weili   +8 more
openaire   +3 more sources