Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Weiyong, Lu"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 150-157 (2024)
Taking the No.4 coal seam in the return air roadway in the upper formation No.1 coal mining area of a mine as the background, based on the energy dissipation theory, the energy dissipation mechanical model of arch roadway was established based on the
Externí odkaz:
https://doaj.org/article/ace7947328664a61ac3fe1152b87e471
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract During the re-mining of historical residual coal resources, the stress environment is complex, the surrounding rock conditions are bad, the mining roadway is significantly affected by ground pressure, the layout is difficult, and the safety
Externí odkaz:
https://doaj.org/article/2cfdeae245a7426383218bccc1fed774
Autor:
Yaohui Sun, Shengrong Xie, Chaowen Wu, Junqi Cui, Dongdong Chen, Fangfang Guo, Zaisheng Jiang, Yuxin Ren, Weiyong Lu
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract To reduce the filling cost of high-water backfilling material (HWBM) in mining backfill and improve the recycling utilization of the industrial waste such as the coal fly ash. The ultra-fine fly ash (UFA) was added to the HWBM as a partial r
Externí odkaz:
https://doaj.org/article/90f24b7bb8384de3bdb2064e03f32409
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
CBM (CBM) development in coal mining area has good safety, economic and energy benefits, but methane emission is common in surface well sites. In view of this, taking the CBM wells in Qinshui County of Shanxi Province as an example, the methane emiss
Externí odkaz:
https://doaj.org/article/78edb5c5d7714af4b73ae6b98c4aaa23
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
For purpose of clearing the spatial pattern of hydraulic fracture during directional perforation in low-permeability unconventional reservoirs, RFPA2D-Flow software is used to numerically calculate their spatial steering trajectory and deflection dis
Externí odkaz:
https://doaj.org/article/fd81b42846ed423ea69787c68314dcf4
Autor:
Weiyong Lu, Changchun He
Publikováno v:
Energy Exploration & Exploitation, Vol 39 (2021)
To clarify the influence of pore pressure gradient on hydraulic fracture propagation, the stress distribution in and around the borehole is explained by theoretical analysis method in this paper. A mechanical model of hydraulic fracture initiation un
Externí odkaz:
https://doaj.org/article/0b69c1346e53466dbcf9b0f029c61bac
Autor:
Weiyong Lu, Changchun He
Publikováno v:
Energy Exploration & Exploitation, Vol 39 (2021)
During horizontal well staged fracturing, there is stress interference between multiple transverse fractures in the same perforation cluster. Theoretical analysis and numerical calculation methods are applied in this study. We analysed the mechanism
Externí odkaz:
https://doaj.org/article/0fe6a81f92b74b40bbc9c2e06c2defb1
Autor:
Weiyong Lu, Changchun He
Publikováno v:
Energy Exploration & Exploitation, Vol 39 (2021)
Directional rupture is one of the most important and most common problems related to rock breaking. The goal of directional rock breaking can be effectively achieved via multi-hole linear co-directional hydraulic fracturing. In this paper, the XSite
Externí odkaz:
https://doaj.org/article/5b0445fc177b49f2b2044a4485c74c40
Publikováno v:
Geofluids, Vol 2021 (2021)
Hydraulic fracturing can improve the permeability of composite thin coal seam. Recently, characterizing hydraulic fracture (HF) propagation inside the coal seam and evaluating the permeability enhancement with HF extension remain challenging and cruc
Externí odkaz:
https://doaj.org/article/9fad05e44d0a43d28e78a2d876c09ecf
Autor:
Weiyong Lu, Bingxiang Huang
Publikováno v:
Adsorption Science & Technology, Vol 38 (2020)
During hydraulic fracturing in gassy coal, methane is driven by hydraulic fracturing. However, its mathematical model has not been established yet. Based on the theory of ‘dual-porosity and dual-permeability’ fluid seepage, a mathematical model i
Externí odkaz:
https://doaj.org/article/b400e2c96186421fbb702b8f4939d789