Zobrazeno 1 - 10
of 554
pro vyhledávání: '"bearing structure"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract When conducting retreat mining in segmented coal pillars, the dynamic evolution of stress and overlying strata structure is more complex than conventional working faces due to the influence of adjacent working faces. Understanding and master
Externí odkaz:
https://doaj.org/article/091715f758bc45b0889d8f26162f893e
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
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 2, Pp 34-48 (2024)
In response to the technical challenges of supporting tunnels in loose and fragmented surrounding rock with poor anchorage, strong dynamic pressure, and strong structural stress influences, extensive on-site surveys were conducted, and several typica
Externí odkaz:
https://doaj.org/article/64e7a062451943448230df2e3d6c9b63
Autor:
CHEN Bailin
Publikováno v:
Dizhi lixue xuebao, Vol 30, Iss 1, Pp 15-37 (2024)
Objective Hydraulic fracturing is a vital deformation and fracture mode in the whole crust-lithosphere range. The related structures are also critical ore-bearing structures of some hydrothermal deposits. Clarifying the main characteristics and ident
Externí odkaz:
https://doaj.org/article/ebea5f08baf842aca5fe89ded9835554
Publikováno v:
Applied Sciences, Vol 14, Iss 20, p 9428 (2024)
The control of soft surrounding rock stability has always been a hot academic issue. Soft rock has poor stability and low strength, and the deformation of a soft rock tunnel becomes more serious after it is affected by water for a long time. In this
Externí odkaz:
https://doaj.org/article/a4307bb107ef45129289a27d0a0ad28a
Publikováno v:
Applied Sciences, Vol 14, Iss 20, p 9608 (2024)
Shallow coal seam mining results in the formation of various bearing structures in key strata, leading to varying degrees of surface subsidence and severe disruption to the surface ecological environment. To investigate the coupled evolution characte
Externí odkaz:
https://doaj.org/article/60ce88d978c040788d2710dd4e1d6f34
Publikováno v:
Meikuang Anquan, Vol 54, Iss 11, Pp 158-163 (2023)
As an improvement of the traditional high density electric method, the mine three-dimensional direct current method based on parallel acquisition has the advantages of high acquisition efficiency, large amount of data and flexible arrangement of obse
Externí odkaz:
https://doaj.org/article/86b9aad54c7b4ea784c9f6a74709b1b5
Publikováno v:
Applied Sciences, Vol 14, Iss 15, p 6810 (2024)
Higher efficiency of rail transportation at the present stage of development of the transport industry necessitates the creation and introduction of rail vehicles with improved technical and economic characteristics among which is reduced tare weight
Externí odkaz:
https://doaj.org/article/6597a6df35d1422ca473d0d00152207b
Autor:
Tao Yang, Yiming Zhang, Jie Zhang, Haifei Lin, Ruoyu Bao, Yifeng He, Yihui Yan, Pengkun Luo, Haohao Wu, Jianping Sun, Haibo Pang
Publikováno v:
Applied Sciences, Vol 14, Iss 14, p 6127 (2024)
As the depth of coal seams increases and the demand for coal grows, the deformation and failure of roadways and coal pillars also intensify. To address the instability of roadways, it is crucial to study the appropriate dimensions for coal pillars. T
Externí odkaz:
https://doaj.org/article/db402590d5cf4e4589550563af29a837
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 9, Pp 65-76 (2023)
The high-intensity mining of shallow-buried coal seams leads to the fracture of the bearing strata to form a combined bearing structure, which complicates the distribution of cracks in the overlying rock and causes serious damage to the surface. In o
Externí odkaz:
https://doaj.org/article/d94942a502474f8fba71dff643730f18