Results 121 to 130 of about 26,696 (230)

Natural Boundary Element Method for Stress Field of Rock Surrounding Roadway with Local Short Supporting [PDF]

Roadway with local short supporting is not only a common phenomenon in engineering, but also short of in-depth theoretical study. Existing literature on underground stress field theory of surrounding rock, generally gives the analytical solution of ...
Dan Ma., Shuncai Li, Zhengzhu Dong
core   +2 more sources

Failure characteristics and control technology of surrounding rock during roadway passing collapse column

Scientific Reports
The collapse column may result in failure of the surrounding rock during roadway excavation. It is of considerable importance to elucidate the failure characteristics and develop the corresponding control technologies for the surrounding rock. A discrete fracture mesh (DFN) and a strain-softening constitutive model are employed to simulate the ...
Ce Jia, Chaojun Fan, Sheng Li, Xiaoshuai Liu, Mingkun Luo   +4 more
openaire   +3 more sources

Town of Hampton Stormwater Management PREP Natural Resources Outreach Coalition Grant Final Project Report [PDF]

, 2010
PREP provided $3,500 towards the project which was matched by municipal funds to pay for consulting advice on improving the regulations. The Planning Board provided exceptional in-kind match on the project, with many hours of work spent by a volunteer ...
Natural Resources Outreach Coalition, Town of Hampton, New Hampshire   +1 more
core   +2 more sources

Numerical Simulation Study on the Deformation Patterns of Surrounding Rock in Deeply Buried Roadways under Seepage Action

Applied Sciences
To reveal the deformation patterns of the surrounding rock in deeply buried straight-wall arch-shaped roadways under seepage action, this study, based on an FLAC3D numerical simulation and classic elastoplastic theory, investigates the influences of ...
Xuebin Xie, Liang Li
doaj   +1 more source

Study on Shear Failure Process and Zonal Disintegration Mechanism of Roadway under High Ground Stress: A Numerical Simulation via a Strain-Softening Plastic Model and the Discrete Element Method

Applied Sciences
Fracture expansion in rock masses can be observed by monitoring the break of contacts between the bounding particles via the discrete element method. The latter’s realization in this study via the PFC2D program tracked the evolution process of the zonal ...
Peiju Yang, Shurong Zhang, Changyou Liu
doaj   +1 more source

Study on the Hierarchical Grouting Reinforcement Control of Low Permeability Surrounding Rocks of Deep Roadway

Energy Science & Engineering
To solve the problem of grouting reinforcement of low permeability argillaceous surrounding rocks of deep roadway, the zonal failure characteristics of the surrounding rock and the mechanism and technology of hierarchical grouting reinforcement were ...
Tongqiang Xiao, Yonghui Ren, Huaizhen Li, Wenlong Shen, Housheng Jia, Shuaishuai Yue, Fayi Liu   +6 more
doaj   +1 more source

Deformation mechanisms in a coal mine roadway in extremely swelling soft rock [PDF]

, 2016

core   +1 more source

Naturally Occurring Asbestos in Alaska and Experiences and Policy of Other States Regarding its Use [PDF]

, 2009
INE/AUTC 09 ...
Hargesheimer, John, Perkins, Robert A., Winterfeld, Aaron   +2 more
core  

Elastic–plastic model identification for rock surrounding an underground excavation based on immunized genetic algorithm [PDF]

, 2016

core   +1 more source

Intermediate Principal Stress Effect on Failure Characteristics of Surrounding Rock in Soft Rock Roadway

Meikuang Anquan, 2020
In order to study the influence mechanism of intermediate principal stress on surrounding rock deformation of soft rock roadway, taking the soft rock transportation lane of II1053 working face of Zhuxianzhuang Mine in Huaibei Mining Area as the engineering background, based on ground stress in situ measurement, a numerical calculation model of ...
openaire   +1 more source