Zobrazeno 1 - 10
of 544
pro vyhledávání: '"room and pillar"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-20 (2024)
Abstract Bodovalle is a siderite mine located in northern Spain that is currently in the closure phase. The mine was exploited using the room-and-pillar method. Subsidence processes have occurred previously and reached the surface because of the coll
Externí odkaz:
https://doaj.org/article/3b9ff6d57697456fafc4b924592cf888
Publikováno v:
Meitan kexue jishu, Vol 52, Iss S1, Pp 30-36 (2024)
The room-and-pillar mined-out area has the characteristics of small recovery rate and large coal pillar, and its overburden movement law and surface deformation law are quite different from those of long-wall mined-out area. In the case of coal pilla
Externí odkaz:
https://doaj.org/article/a2f682c6601b4210a6eb9a4842e5878b
Autor:
Zhiwei HE, Lei ZHU, Chengyong LIU, Wenzhe GU, Jianfei XU, Tianqi SONG, Zhicheng LIU, Peng ZHANG
Publikováno v:
Meikuang Anquan, Vol 55, Iss 4, Pp 152-163 (2024)
In view of the disaster caused by the instability of room-and-pillar goaf, taking the coal pillar left over from a pillar goaf in Yulin as the research background, the roof instability mechanism of room-and-pillar goaf is studied by means of theoreti
Externí odkaz:
https://doaj.org/article/7b75b3fd627f469caf93d65a95bfbdf3
Publikováno v:
Underground Space, Vol 13, Iss , Pp 121-135 (2023)
Estimating average vertical pillar stresses is a critical step in designing room-and-pillar mines. Several analytical methods can be used to estimate the vertical stresses acting on the pillars. However, the present analytical methods fail to adequat
Externí odkaz:
https://doaj.org/article/e558b57395ed4c9f9186b43dcaa69146
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5003 (2024)
This study of the strength and deformation of coal samples was triggered by the need to define the stress–strain characteristics of pillars during room and pillar mining in the shaft protective pillar at the ČSM Mine. It was probably the world’s
Externí odkaz:
https://doaj.org/article/9ad6288c97bc464987012da7e1f70a41
Research on Collapse Detection in Old Coal Mine Goafs Based on Space–Sky–Earth Remote Sensing Survey
Publikováno v:
Remote Sensing, Vol 16, Iss 7, p 1164 (2024)
A considerable number of coal mines employed room and pillar mining in the last century in northern China, where the goaf remained stable for a period of time; however, with the increased exposure of coal pillars, their collapse may gradually increas
Externí odkaz:
https://doaj.org/article/c5771db105cc4486a081b8c9375d29b2
Publikováno v:
Geosciences, Vol 14, Iss 2, p 54 (2024)
The hazards of gaseous geodynamic phenomena and rockbursts are among the most challenging to assess and classify. This perception arises from both a review of the literature and an examination of available instructions and regulations in underground
Externí odkaz:
https://doaj.org/article/ec54cf3f4ce84a57b68a0204c33175ac
Akademický článek
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Akademický článek
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Publikováno v:
Analytical and Numerical Methods in Mining Engineering, Vol 12, Iss 31, Pp 35-45 (2022)
A pillar dimension in room and pillar mining method has been always a technical and economical issue for mining and rock mechanic engineers. The strength of the pillars is usually determined by empirical relationships, which have been determined by e
Externí odkaz:
https://doaj.org/article/e85a221314ec4a8c9ec1e672dc298d62