Results 21 to 30 of about 359,678 (168)
Post-Punching Mechanisms of Slab-Column Joints Under Upward and Downward Punching Actions
, 2021 Progressive collapse of reinforced concrete flat plate systems can be significantly influenced by the post-punching performance of their slab–column joints under large deformations.
Guan, Hong +5 more
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Research Status and Prospect of Coal and Gas Outburst Prevention and Control by Hydraulic Technology
Meikuang Anquan, 2020 Coal seam pressure relief and permeability increase is an effective means to prevent coal and gas outburst, coal and rock mass structure transformation is the core problem of coal seam pressure relief and permeability increase, hydraulic technology is ...
CAO Yaolin
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Meikuang Anquan, 2023 The broken and soft coal seam has high gas content and poor permeability. The single hole drainage radius is small when the conventional through-bed drilling is used for gas drainage, and the drilling engineering volume is large.
Tao PANG +5 more
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Experimental and numerical analysis of micromechanical damage in the punching process for High-Strength Low-Alloy steels [PDF]
, 2014 Sequential sheet metal forming processes can result in the accumulation of work hardening and damage effects in the workpiece material. The mechanical strength of the final component depends on the “evolution” of these two characteristics in the ...
GERMAIN, Guénaël +3 more
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Elaboration of ductile fracture criteria based on punching forgeability test [PDF]
Computer Methods in Materials Science, 2016 A new approach of forgeability test, based on compression-punching state of stress was proposed. Comparison of the results of the presented research methodology with standard compression test is presented.
Łukasz Lisiecki, Skubisz Piotr
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Research on full-life cycle gas treatment technology based on floor rock roadway
Gong-kuang zidonghua, 2023 For mines lacking conditions for mining protective layers, pre extraction of coal seam gas from floor rock roadway strips is the mainstream gas control method.
ZHAI Cheng, TANG Wei
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Stone stability in breakwater toes based on local hydraulic conditions [PDF]
, 2014 This study investigates the stability of rocks in breakwater toes. Previous studies have coupled the toe stability directly to the wave height, which is not physically accurate.
Peters, R.B.M. (Ruben) +1 more
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Shock and Vibration, 2020 Hydraulic punching technology has recently developed into an effective pressure relief measure and permeability enhancement method for soft and low permeability coalbeds.
Dongdong Xu +3 more
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Research and Optimization of Gas Extraction by Crossing-Seam Boreholes from Floor Roadway
Geofluids, 2021 Deep coal seams are characterized by large stress, high gas pressure, and low permeability. The gas disaster threatens the safe production of coal mine seriously.
Gang Li, Jiafei Teng
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Hydraulic fracturing and punching integration enhanced permeability gas extraction technology
Gong-kuang zidonghuaThe existing hydraulic fracturing, hydraulic punching, hydraulic slotting, hydraulic cutting and other underground hydraulic permeability enhancement technologies in coal mines have complex processes, single adaptability conditions, and high labor ...
WANG Baogui
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