Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Yongping Wu"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 10, Pp 1-10 (2024)
The flying-gangue hazard has long threatened the safety of personnel and mining equipment in steeply dipping/inclined coal seams. A flying gangue maybe produces a large number of “subgangues” after impacting on the longwall floor, it’s damage i
Externí odkaz:
https://doaj.org/article/442145c25d9d432eb3d4c9384dccd323
Publikováno v:
Meitan xuebao, Vol 49, Iss 10, Pp 4159-4168 (2024)
Biomass, as a renewable energy source, features wide availability, multiple functions, and carbon neutralization. The high-value resource utilization of biomass is conducive to reducing reliance on high-carbon fossil energy, ensuring national energy
Externí odkaz:
https://doaj.org/article/7103a6362a97469bb60f993e99ca2a38
Autor:
Yongping WU, Tao HU, Bosheng HU, Panshi XIE, Yuqian DU, Zhuangzhuang YAN, Tong WANG, Baoheng LIU
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 7, Pp 187-198 (2024)
In order to solve the problems of ignoring multi-dimensional load characteristics, cumbersome modeling process and long design cycle in the design process of hydraulic support in steeply dipping angle coal seam, combined with the load characteristics
Externí odkaz:
https://doaj.org/article/10851ce3120d4c3ea9b59a2a9c15e2cd
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In the process of fully mechanized top-coal caving mining, the top-coal is affected by mining-induced stress, and the stress varies along the strike direction of working face, so the boundary position of its entering the limit equilibrium st
Externí odkaz:
https://doaj.org/article/d6777979fec84d41b5b6d0c5fc063685
Publikováno v:
Energy Exploration & Exploitation, Vol 42 (2024)
Close-hole roof-cutting technology (CHRCT, also called “dense drilling”) has been widely applied in coal mines due to its economic and safety benefits. Inappropriate cutting parameters and support schemes can lead to dynamic pressure disturbances
Externí odkaz:
https://doaj.org/article/daee71f742a442c8917e69cadc7831d5
Autor:
Baofa Huang, Panshi Xie, Yongping Wu, Weidian Lin, Sheng Luo, Shicheng Wang, Zekang Wen, Jianjie Chen
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-19 (2024)
Abstract To study the fracture instability characteristics and fracture mechanism of overlying strata in steeply dipping and large mining height stope, through the combination of physical simulation experiment, numerical calculation, theoretical anal
Externí odkaz:
https://doaj.org/article/fb26a164337141e898b55e4e424de139
Autor:
Yongping WU, Yuqian DU, Panshi XIE, Hongwei WANG, Bosheng HU, Zhuangzhuang YAN, Tong WANG, Tao HU
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 4, Pp 314-325 (2024)
The hydraulic support is the core of the stability of the ‘surrounding rock and equipm ent’ system in the pitching oblique working face of steeply dipping coal seam. The existing hydraulic support structure can not meet the requirements of spatia
Externí odkaz:
https://doaj.org/article/340c019cdca74d0a81d50db5d9f69635
Publikováno v:
Meitan xuebao, Vol 49, Iss 1, Pp 280-297 (2024)
The structure and stress environment of the surrounding rock at the longwall mining area in the steeply dipping coal seam are alienated, and the composition factors and disaster modes of the ”support and surrounding rock” system in the working fa
Externí odkaz:
https://doaj.org/article/eced59fda36d458cbe322a62e2690321
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract To solve the problem that the macroscopic deformation and failure of coal–rock medium under external loads are easy to be observed while the internal stress transfer mode and path are unclear. Based on the discrete element idea, the numeri
Externí odkaz:
https://doaj.org/article/4adf33cedd0648a0821691d42474f480
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 15, Iss 1 (2024)
To solve the problem of stability control of coal pillar in steeply dipping coal seam (SDCS), based on the characteristics of surrounding rock structure and stress environment of the coal pillar, a special bearing structure of ‘roof-coal pillar’
Externí odkaz:
https://doaj.org/article/81feeaa4bc47454ca80ae7496161e147