Results 21 to 30 of about 5,863 (268)
An Index for Estimating the Stability of the Layered Rock Masses under Excavation Disturbance
Advances in Materials Science and Engineering, 2018 The mechanical behaviours of layered rock mass exhibit significant differences in the directions parallel and vertical to the bedding planes. The deformation and failure of a layered rock mass has remarkable weak-plane dependence, which brings a major ...
Ding-ping Xu +4 more
doaj +2 more sources
地质科技通报, 2023 Objective In recent years, the trend of tunnel blasting construction extending to depth is becoming more and more significant, and the influence of layered rock mass in deep buried diversion tunnel on cutting quality in blasting construction is the key ...
Shouguo Jiang +4 more
doaj +2 more sources
Experimental Study on Deformation Law of Rectangular Roadway in Horizontal Layered Rock Mass
Advances in Materials Science and Engineering, 2022 In order to analyze the characteristics and mechanism of roadway deformation caused by high stress in horizontal strata, a physical model with rectangular roadway was designed.
Dinggui Hou +2 more
doaj +2 more sources
Numerical Simulation of Rock Mass Structure Effect on Tunnel Smooth Blasting Quality: A Case Study
Applied Sciences, 2021 Taking the Zigaojian tunnel, Hangzhou–Huangshan high-speed railway, China, as background, the rock mass structure effect on smooth blasting quality was studied.
Jianxiu Wang +8 more
doaj +2 more sources
Study on the Effect of Rock Mass Structure on CO2 Transient Fissure Excavation
Applied Sciences, 2023 As a new rock breaking method, CO2 transient cracking has been widely used in rock excavation projects in recent years. However, in the actual construction process, there are often situations where the fracturing effect varies due to different rock mass ...
Yong Li +5 more
doaj +2 more sources
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesThrough the uniaxial compression test of double parallel fissured layered rock mass, the mechanical properties of layered rock mass with different fissure dip angle, and the characteristics of acoustic emission (AE) parameters in the process of fracture ...
Jun Hu +7 more
doaj +2 more sources
Applied SciencesDiscontinuities exist widely in high rock slopes and threaten their stability at all times. To accurately characterize the information of rock mass discontinuities in high slopes, the layered rock slope on the north side of the Fushun West Open-pit Mine ...
Ming Li +5 more
doaj +2 more sources
Applied SciencesThe layered composite roof of a coal mine roadway exhibits heterogeneity, with pronounced variations in layer thickness and strength. Fully grouted rock bolts installed in such layered roofs usually penetrate two or more strata and bond with them to form
Shiming Jia +4 more
doaj +2 more sources
Complex Analytical Study of the Stability of Tunnel-Surrounding Rock in a Layered Jointed Rock Mass [PDF]
Mathematical Problems in Engineering, 2020 A barrier function method based on the fmincon optimization function in MATLAB was used to determine the function to map a tunnel boundary to the unit circle in the complex plane, and a structural failure criterion of the mapping convergence was established based on the reliability theory of underground engineering.
Su Wu +6 more
openaire +2 more sources
Meitan kexue jishuLayered rock is a common geological structure of underground engineering construction, drilling and blasting method construction in layered rock is manifested in poor blasting and shaping effect, serious phenomenon of over and under excavation, uneven ...
Jianxin YU +3 more
doaj +2 more sources