Results 231 to 240 of about 2,759,873 (338)

Construction Contractors Association of the Hudson Valley, Inc. and Laborers International Union of North America (LIUNA), Local 17 (2003) [PDF]

, 2003

core   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

Research on ground deformation induced by large caisson construction at the Zhuchong pumping station in Xinyang, China. [PDF]

Sci Rep
Xu Z, Wang L, Cui Y, Zhang X, Wang S, Tian J.   +5 more
europepmc   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Rock cuttability estimation via Cerchar scratch test. [PDF]

Sci Rep
Zhang G.
europepmc   +1 more source

UNHSC Design Specifications for Porous Asphalt Pavement and Infiltration Beds [PDF]

, 2016
Ballestero, Thomas P., Briggs, Joshua F., Houle, James J., Pochily, Jeff, Puls, Timothy A., Roseen, Robert M., Swenson, Grant   +6 more
core   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Stability analysis and optimization of open pit mine slopes based on the improved Sarma method with nonhomogeneous hydraulic boundary conditions. [PDF]

Sci Rep
Ma G, Liang Z, Ou S, Tao Z, Huang B, Cao H.   +5 more
europepmc   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Failure mechanisms of energy redistribution in excavation roadways: experimental and numerical investigation. [PDF]

Sci Rep
Peng Y, Cao A, Hao Q, Lyu G, Xue C, Bai X.   +5 more
europepmc   +1 more source