Results 151 to 160 of about 64,796 (273)
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 +1 more
core +2 more sources
Prediction of TBM Roadway Surrounding Rock Grade Based on XGBoost Model
Academic Journal of Science and TechnologyThe classification of roadway surrounding rock is a very important link in the process of TBM construction. Its main purpose is to determine the drilling parameters such as bit type and cutterhead speed used in the process of shield tunneling according to different surrounding rock characteristics, so as to ensure the safety and efficiency of ...
Zhang Hu, Zhanbiao Yang
openaire +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 +2 more
core
Energy Science & EngineeringAddressing the challenges of surrounding rock control in gob‐side entry driving near an advancing working face affected by adjacent working faces and gobs, taking 5104 return airway of No.1 well in Checun Coal Mine as the background, using theoretical ...
Delong Cui +6 more
doaj +1 more source
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
Applied SciencesTo 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
Applied SciencesThe phenomenon of peripheral rock instability is more common in crushed bedrock roadways, and the fundamental reason for this lies in the significantly different characteristics of its peripheral rock stress field.
W. Peng, Shenghua Feng
semanticscholar +1 more source
Scientific ReportsThe shape and extent of the plastic zone can effectively reflect the degree of deformation and failure of the surrounding rock. By applying complex variable functions and the theory of elasticity, a mechanical model for the surrounding rock of a ...
Renliang Shan +7 more
semanticscholar +1 more source
Deformation mechanisms in a coal mine roadway in extremely swelling soft rock [PDF]
, 2016 core +1 more source
Energy Science & EngineeringTo 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 +6 more
doaj +1 more source