Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Erhu Bai"'
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 10, Pp 4323-4334 (2024)
Abstract Laying long horizontal borehole (LHB) in mining‐induced strata fractures for coal‐bed gas drainage in the goaf is a pivotal method for eliminating safety hazards, preventing atmospheric pollution, and realizing gas utilization. A crucial
Externí odkaz:
https://doaj.org/article/aff0294dff324b99a3133e42cdf6723b
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 6, Pp 2435-2455 (2024)
Abstract The gases released by underground coal mining pose a threat to mine safety, lead to resource wastage, and contribute to environmental pollution. Employing long horizontal boreholes (LHB) for gas extraction proves to be an effective solution.
Externí odkaz:
https://doaj.org/article/31acdfaef09b474cae2bf3334dfe8939
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-26 (2024)
Abstract Traditional cemented paste backfilling continues to face the shortcomings such as paste leakage, poor adaptability to geological structures and insufficient roof-contact. To solve the limitations, a novel L-shaped cemented paste backfilling
Externí odkaz:
https://doaj.org/article/da5d1ccd45344066948c52fda70c2eb4
Publikováno v:
International Journal of Mining Science and Technology, Vol 33, Iss 10, Pp 1217-1228 (2023)
Recovery of the coal buried under buildings, railways and water bodies and the residual coal in irregularly arranged fully mechanized mining faces is a common engineering problem facing underground coal mining. In this study, a mining technology of c
Externí odkaz:
https://doaj.org/article/627e45b5c51b4737914e8e677ee3ca01
Publikováno v:
Meitan xuebao, Vol 48, Iss 10, Pp 3750-3765 (2023)
The pressure-relief gas drainage in longwall mining goaf is an important part of the simultaneous extraction of coal and gas in the green mining technology system. The horizontal-directional long boreholes arranged in overlying strata for pressure-re
Externí odkaz:
https://doaj.org/article/c4b3f7315dea4199ab65013d2c61d3e2
Publikováno v:
Heliyon, Vol 9, Iss 8, Pp e18965- (2023)
Coal will occupy the main position in China's energy structure for a long time, and the negative externalities of its exploitation have a serious impact on the ground surface and its appurtenances. With the proposal of the dual carbon strategy, the c
Externí odkaz:
https://doaj.org/article/86ec6b41e8114a8984e0fa53f6095dfc
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 1682 (2024)
The deformation and re-crushing characteristics of different lithological caving crushed gangues in mine goaf directly affect the overburden strata movement, which significantly affects the surface subsidence of mining goaf. The effect of particle si
Externí odkaz:
https://doaj.org/article/25b576b7fb1a486399b6e7b8b2314c6c
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
Publikováno v:
Geofluids, Vol 2022 (2022)
With the deepening of coal mining in China, dynamic disasters occur with the release of energy. In this study, in order to study the difference between shallow rock and deep rock, conventional triaxial compression tests were carried out on basalts wi
Externí odkaz:
https://doaj.org/article/66869b56a2c34f858b83ca84326a3409
Publikováno v:
Energies, Vol 15, Iss 21, p 7908 (2022)
In this study, the water absorption, mechanical properties, and energy evolution characteristics of sandstone were examined through experimental and theoretical analysis. The P-wave velocity was found to initially decrease, then increased with immers
Externí odkaz:
https://doaj.org/article/4743953719f24c3383981b27d9bcc211