Results 91 to 100 of about 163,434 (247)

A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable

International Journal of Mining Science and Technology
High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large ...
Xuezhen Wu, Mingzhu Zhao, Qing Ye, Yujing Jiang, Tao Deng, Hanfang Zheng, Gang Wang, Zhenchang Guan   +7 more
doaj   +1 more source

Study on Deformation and Failure Laws of Surrounding Rock in Layered Rock Roadway by Discrete Element Method

Meikuang Anquan, 2020
In order to study the deformation and failure laws of roadway surrounding rock under the condition of layered rock, the one orbit lane of Shandong Yuncheng Coal Mine was taken as the research background, and PFC2D discrete element software was adopted ...
WANG Huifeng, SONG Libing
doaj   +1 more source

Study on Supporting Protection of Tunnel Opening near a Rock Layer under Elastic Deformation of Surrounding Rock

Geofluids, 2021
Due to the limitation of geological conditions and route alignment, tunnel engineering will inevitably pass through special sections such as shallow buried section, broken rock layer, and loss and weak rock stratum.
Zhigang Jia, Yongsong Li
doaj   +1 more source

Dynamic development of hydrofracture [PDF]

, 2013
Many natural examples of complex joint and vein networks in layered sedimentary rocks are hydrofractures that form by a combination of pore fluid overpressure and tectonic stresses.
Ghani, Irfan, Koehn, Daniel, Passchier, Cees Willem, Toussaint, Renaud   +3 more
core   +6 more sources

Influence Factors and Sensitivity Analysis on Material-Stress-Induced Large Deformation of Deep Underground Engineering in Soft Rockmass

Buildings
During the construction of deep underground soft rock strata, the adverse effects of high geostress, unfavorable geological conditions, and excavation disturbances are significant, easily triggering Material-Stress-Induced (MSI) large deformation ...
Yue Li, Yang Yu, Lu Li, Jiaqi Guo, Bendong Qin   +4 more
doaj   +1 more source

Spatio-temporal evolution of intraplate strike-slip faulting: the Neogene-Quaternary Kuh-e-Faghan Fault, Central Iran [PDF]

, 2016
Central Iran provides an ideal region to study the long-term morphotectonic response to the nucleation and propagation of intraplate faulting. In this study, a multidisciplinary approach that integrates structural and stratigraphic field investigations ...
Berberian, Claudio Faccenna, Cox, Domenico Cosentino, Dooley, Federico Rossetti, Finlay M. Stuart, Fossen, Gabriele Calzolari, Gianluca Vignaroli, Hafkenscheid, Hollingsworth, Homke, Jackson, Khadivi, Maria Laura Balestrieri, Marta Della Seta, Molnar, Raimondo, Reilinger, Reza Nozaem, Sella, Simons, Spotila, Valerio Olivetti   +24 more
core   +3 more sources

Tunnel Surrounding Rock Deformation Characteristics and Control in Deep Coal Mining

Geomaterials, 2013
In order to study the failure characteristics and control method of deep tunnel surrounding rock, based on the stress test, the structure and stress state of the main transportation tunnel surrounding rock in Mine Zhaogezhuang level 14 was analyzed, and it shows that the surrounding rock is exposed to an interphase hard and soft disadvantageous ...
Zhiqiang Zhao, Housheng Jia, Bo Peng, Yangyang Dong   +3 more
openaire   +2 more sources

Study on the Failure Mechanism for Coal Roadway Stability in Jointed Rock Mass Due to the Excavation Unloading Effect

Energies, 2020
Aiming at the large deformation instability problem caused by the excavation unloading of a coal roadway in deep-buried slowly inclined jointed rock mass, the geomechanical parameters and deformation failure characteristics of an engineering ...
Eryu Wang, Guangbo Chen, Xiaojie Yang, Guofeng Zhang, Wenbin Guo   +4 more
doaj   +1 more source

Metamorphism of the Oddanchatram anorthosite, Tamil Nadu, South India [PDF]

The Oddanchatram anorthosite is located in the Madurai District of Tamil Nadu, near the town of Palni. It is emplaced into a granulite facies terrain commonly presumed to have undergone its last regional metamorphism in the late Archean about 2600 m.y ...
Janardhan, A. S., Wiebe, R. A.
core   +1 more source

Influence of seismic events on shallow geotechnical structures [PDF]

, 2017
This paper deals with a summary of possible seismic loading of shallow geotechnical structures. It is known that seismic loading influences the underground structures much less than the structures on the surface, therefore, it is not usually taken into ...
Kaláb, Zdeněk, Štemon, Pavel
core