Results 31 to 40 of about 597,919 (179)
Meitan kexue jishu, 2023 Aiming at many problems about large deformation of surrounding rock of soft rock roadway below weak aquifers, the transportation roadway of coalface 110207 of Qingshuiying Mine is taken as an object to study a series of research works.
WU Yongzheng, GUO Gangye, WANG Zhanling
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The mechanism of roadway deformation in conditions of laminated rocks [PDF]
, 2018 The high stress condition of the rock mass requires a change in the approach to the design and usage of roadway support. It is necessary to take into account the mutual deformations of the ''support – rock mass'' system, as well as the peculiarities of ...
Khalymendyk, I. +3 more
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Roadway Deformation and Control under Multidisturbed Secondary High Stress
, 2022 Aiming at the serious deformation and failure of mining roadway under the condition of high secondary stress in Xuchang Coal Mine, Shandong Province, the deformation law of surrounding rock under the influence of high secondary stress in the original ...
Haibin Wang +5 more
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The Scientific World Journal, 2013 According to the geological characteristics of Xinjiang Ili mine in western area of China, a physical model of interstratified strata composed of soft rock and hard coal seam was established.
Zeng-hui Zhao +3 more
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Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
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Meikuang Anquan, 2023 To solve the problem of large deformation of roadway with deep composite roof, based on the material roadway of 3205 working face in Xin’an Coal Mine as the engineering background, the deformation and failure characteristics of roadway with composite ...
LI Jian, LI Yongle, XIE Zhengzheng, ZHANG Nong, GUO Feng, LIN Xuezhen, CHEN Qinghua
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Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
wiley +1 more source
Roadway Lighting and Safety: Phase II – Monitoring Quality, Durability and Efficiency;TR-601, November 2011 [PDF]
, 2011 This Phase II project follows a previous project titled Strategies to Address Nighttime Crashes at Rural, Unsignalized Intersections. Based on the results of the previous study, the Iowa Highway Research Board (IHRB) indicated interest in pursuing ...
core
, 2022 The problem of asymmetric large deformation of surrounding rock of heading roadways is prominent due to the superposition of mining stress in the mining intersection area.
Ya’nan Dong +2 more
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Applied SciencesTo elucidate evolutionary characteristics of the surrounding rock failure mechanism in a double-roadway layout, this work is grounded on in the research context of the Jinjitan Coal Mine, focusing on the deformation and failure mechanisms of double ...
Linjun Peng +4 more
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