Results 61 to 70 of about 163,434 (247)

Deformation Failure Characteristics and Maintenance Control Technologies of High-Stress Crossing-Seam Roadways: A Case Study

open access: yesApplied Sciences, 2023
The surrounding rock structure of the crossing-seam roadway is poor and is susceptible to anchorage failure phenomena, such as top plate sinking and convergence deformation under high ground stress.
Zhengzheng Xie   +6 more
doaj   +1 more source

Stress concentrations around voids in three dimensions : The roots of failure [PDF]

open access: yes, 2017
Funding This work forms part of a NERC New Investigator award for DH (NE/I001743/1), which is gratefully acknowledged. Acknowledgments The authors would like to acknowledge the reviewers, Elizabeth Ritz and Phillip Resor.
Bubeck, A.   +3 more
core   +1 more source

Deformation Characteristics and Destabilization Mechanisms of the Surrounding Rock of Near-Vertical Coal–Rock Interbedded Roadway

open access: yesApplied Sciences, 2023
Aiming at the problem of serious deformation and difficult support in the surrounding rock of the near-vertical coal–rock-interbedded roadway, this paper studies the stress distribution characteristics of the roadway surrounding the rock based on the engineering geological conditions of the Wudong coal mine, in particular with the +400 level B8 ...
Yanqiang Yao   +3 more
openaire   +2 more sources

Surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms at the end of mining stage

open access: yesInternational Journal of Coal Science & Technology, 2019
Two case studies were conducted in the Shennan mining area of Shaanxi Province, China to evaluate the surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms. These studies mainly monitored the surrounding rock deformation
Bonan Wang   +5 more
semanticscholar   +1 more source

Monitoring-Based Assessment of Deformation Behavior and Support Effectiveness in a Deep Hard Rock Drift

open access: yesApplied Sciences
To reveal the real deformation behavior and control mechanism of surrounding rock in hard rock drifts under deep high-stress conditions, a systematic study was conducted involving engineering geological investigation, in situ monitoring of surrounding ...
Shaolong Qin   +6 more
doaj   +1 more source

Keeping watch over Colombia’s slumbering volcanoes [PDF]

open access: yes, 2015
The Volcanological and Seismological Observatories of Manizales, Pasto and Popayan (Colombian Geological Survey) monitor and study the active volcanoes of Colombia using seismological, geodetic, geochemical and other techniques.
BATTAGLIA, MAURIZIO   +5 more
core   +1 more source

State of the art review of the large deformation rock bolts

open access: yesUnderground Space, 2022
Rock bolting technique is an important reinforcement measure in the geotechnical engineering practice. New rock bolts have been continuously emerging through the development of rock supporting technology.
Qiru Sui   +4 more
doaj   +1 more source

Post-injection normal closure of fractures as a mechanism for induced seismicity [PDF]

open access: yes, 2017
Understanding the controlling mechanisms underlying injection-induced seismicity is important for optimizing reservoir productivity and addressing seismicity-related concerns related to hydraulic stimulation in Enhanced Geothermal Systems.
E. Keilegavlen   +5 more
core   +2 more sources

Large Deformation Characteristics of Surrounding Rock and Support Technology of Shallow-Buried Soft Rock Roadway: A Case Study

open access: yesApplied Sciences, 2022
The coal resources in the coal-rich area of western China are mostly located in the late diagenetic Cretaceous and Jurassic strata. In this paper, a study on the support of soft rock roadways was carried out in the background of the soft rock track ...
Liu Zhu   +4 more
semanticscholar   +1 more source

Study on Failure Mechanism and Control Technology of Roadway Surrounding Rock under Complex Occurrence Coal Seam

open access: yesGeofluids, 2022
Aiming at the characteristics of large deformation and long deformation time under the mining influence of the 2254 east floor roadway surrounding rock, which under the condition of complex coal occurrence in Jiahe Mine.
Hai Wu   +5 more
doaj   +1 more source

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