Results 11 to 20 of about 652 (167)
Gong-kuang zidonghua, 2023 The current research achievements in the construction of intelligent fully mechanized caving face lack systematic implementation case for a specific fully mechanized caving face.
WU Xicang +3 more
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Meitan kexue jishu, 2023 At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design ...
Yao CUI +3 more
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Pumping pillar technology of fully mechanized caving face passing through abandoned roadway
Gong-kuang zidonghua, 2019 Existing working face passing through abandoned roadway based on traditional support methods cannot adapt to changeable geological conditions well. Based on research background of 8103 fully mechanized caving face of Yongdingzhuang Coal Industry Co., Ltd.
HAO Yuhui, KANG Guanxian
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Coal-gangue image recognition in fully-mechanized caving face based on random forest
Gong-kuang zidonghua, 2020 Aiming at problems of high difficulty in parameter adjustment, low prediction accuracy and easy over-fitting in present coal-gangue image recognition methods in fully-mechanized caving face, a coal-gangue image recognition method in fully mechanized ...
XUE Guanghui +3 more
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Meitan kexue jishu, 2023 The excavation thickness of the coal seam and the corresponding motion space of the overlying strata are so large in the fully-mechanized top coal caving face, that roof accidents are occur easily.
XU Gang +8 more
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Automatic control system of top coal caving on fully-mechanized coal mining face
Gong-kuang zidonghua, 2015 In view of problems of large randomness, low efficiency of coal caving of artificial operation for top coal caving mining face, an automatic control system of top coal caving on fully-mechanized coal mining face was designed.
WEI Wenya
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Research on automatic drawing control system on fully-mechanized coal face with sublevel caving
Gong-kuang zidonghua, 2018 In view of problem of low production efficiency of artificial drawing method on fully-mechanized coal face with sublevel caving, an automatic drawing control system was studied.Sonic sensors, vibrating sensors and ash sensors are installed on hydraulic ...
NIU Jianfeng
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Research on overburden structural characteristics and support adaptability in cooperative mining of sectional coal pillar and bottom coal seam [PDF]
Scientific ReportsIn the mining process of the II1 coal seam at Zhaogu No. 2 coal mine, a method of stratified mining is employed, leaving relatively wide coal pillars in sections.
Du Feng +6 more
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Hydraulic weakening technology for unsupported top coal at the end of fully mechanized caving face
Gong-kuang zidonghuaTo address the issue of excessive unsupported top coal length and delayed caving at the end of a fully mechanized caving face, a hydraulic weakening technology for face-end top coal in steeply inclined thick coal seams was proposed based on the coal ...
DONG Haofu +7 more
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Deformation Mechanism of the Coal ahead of Fully Mechanized Caving Face under High‐Intensity Mining Condition [PDF]
Advances in Civil Engineering, 2021 In order to study the coal deformation and failure mechanism in fully mechanized caving face under the high‐intensity mining, based on the equivalent mechanical model of transversely isotropic cylindrical coal with fractures, the equivalent equations for axial, radial, and volume strains of coal sample loaded in linear elastic and plastic stages were ...
Can Zhao +6 more
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