Results 21 to 30 of about 399,174 (293)
Geofluids, 2020 The compound dynamic disaster of coal and gas outbursts and rockburst is a typical hazard jeopardizing the mining of the high gas content coal seam under a hard roof condition.
Litong Dou +3 more
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Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]
, 2019 Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O +3 more
core +1 more source
RTS2 - the Remote Telescope System [PDF]
, 2010 RTS2 is an open source observatory manager. It was written from scratch in the C++ language, with portability and modularity in mind. Its driving requirements originated from quick follow-ups of Gamma Ray Bursts. After some years of development it is now
Kubánek, Petr
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Meitan xuebao, 2023 In the engineering practice of gob side entry retaining by roof cutting, the height and angle of roof cutting are the direct influencing factors, and the reasonable roof cutting parameters allowed by the hard roof with a wide range of roof thickness change have their particularity.
Xuhui XU +5 more
openaire +1 more source
Determination and Application of the Unsupported Roof Distance in Coal Roadway Driving With the Thick and Hard Main Roof [PDF]
, 2020 Abstract The authors have requested that this preprint be removed from Research Square.
Yang Sen +5 more
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Scientific Reports, 2023 Based on the disaster characteristics and the geo-conditions at the scene, in this study, the occurrence mechanism of a serious rock burst accident that occurred in the Tangshan Coal Mine, China, was analysed.
Ying Chen +5 more
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Development status and Prospect of directional hydraulic fracturing technology for coal mine roof [PDF]
E3S Web of Conferences, 2020 Aiming at the harm and control methods of thick and hard roof in coal mine, the paper firstly analyzes the advanced control methods of thick and hard roof, such as directional shaped charge blasting roof control technology, hydraulic fracturing roof ...
Liangwei LI
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Shearer mining application to soft thin-seam with hard roof
Procedia Earth and Planetary Science, 2009 AbstractStudy status on shearer mining in thin seams in the world is introduced. Base on the geological conditions of instable and soft thin-seam with hard roof in Caoyao Coal Mine of Yima Coal Group, China, and combined with related parameters of strata behaviors at coal faces, the paper concludes that the strata control on the thin-seam coal face is ...
Xin-xian, Zhai +3 more
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Study on pre-splitting blasting technology of hard roof face
IOP Conference Series: Earth and Environmental Science, 2019 Abstract In order to solve the problems of hard roof caving and overhanging area in 220116 working face of Xinji No.2 Coal Mine, deep-hole pre-splitting blasting overburden technology is adopted to destroy the integrity of roof in advance so as to make it collapse as soon as possible, reduce the apparent strength of rock pressure of ...
Huaifu Liu, Zunyu Xu
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Unloading-slippage mechanism of coal bump in gateroad of longwall
Geohazard Mechanics, 2023 Coal bump seriously threatens the safe and efficient mining of coal, and the research on the occurrence mechanism of coal bump is of great significance. The roadway coal bump accounts for 86.8% of the total.
Jun Han +5 more
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