Results 91 to 100 of about 139,472 (275)
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
, 2019 I liked the intimate setting of the class at first. The silence before the professor walked in. The cramped room. It always smelled like citrus cleaning products. Some hair gel mixed in there, too.
Cincotta, Anna
core
Advancement Area Control Technology for High Mine Pressure Dynamic Disasters in Thick and Hard Roofs
, 2023 Abstract The western mining area exhibits the superimposed development of a thick and hard roof under the continental sedimentation of multiple ancient rivers. In this case, the fully mechanized caving working face with a large mining height has a high stope pressure, which induces rock burst, mine earthquake, and hurricane in the goaf.
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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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Meitan kexue jishuDuring the mining of the adjacent working face, the strong mine pressure caused by the hard thick roof has obvious zoning characteristics due to the mining of the previous deeply buried large mining height working face.
Zhaoyuan LEI +4 more
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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
Analysis of coal pillar rock burst appearance in multi-seam mining with thick and hard roof
Gong-kuang zidonghua, 2022 The existing research only analyzes the rock burst appearance characteristics under specific conditions, lacks research on the rock burst appearance induced by coal pillar under the condition of thick and hard roof. In order to solve this problem, taking I010203 working face of a mine in Xinjiang as the research object, the paper analyzes the ...
YANG Wei +7 more
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Developmental Dynamics, EarlyView.Abstract Background Dentitions have diversified enormously during vertebrate evolution, involving reductions, modifications, or allocations to prey seizing and processing regions. A combination of ancient and novel features related to dental and oropharyngeal apparatuses is found in extant lineages of non‐teleost fishes, such as the gars.
Anna Pospisilova +4 more
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Meitan xuebaoIn view of the problems of strong mine pressure such as rapid shrinkage of hydraulic support column and easy support crushing in working face under the fully mechanized caving face with large mining height in multi-layer thick and hard roof of extra ...
Zhen ZHANG +6 more
doaj +1 more source