Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Xiaolou CHI"'
Publikováno v:
Developments in the Built Environment, Vol 19, Iss , Pp 100501- (2024)
This study investigated the preparation of cementitious mortar specimens (ECM) by blending different dosages of pure magnesium hydroxide (AR), active magnesium oxide, and nano magnesium hydroxide as external additives with expired composite Portland
Externí odkaz:
https://doaj.org/article/07cb1645a0d142779933c6edc7c309b8
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 3050-3060 (2023)
To simulate the impact of the periodic wetting of the groundwater reservoir water level on the mechanical performance of the groundwater reservoir dam, we made a coal pillar-artificial dam assembly with a vertical interface, designed uniaxial compres
Externí odkaz:
https://doaj.org/article/47566ae52e1041c2b15873007a714d0e
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 6, Pp 1-10 (2023)
This study focused on the stability control of roof in long wall stratified mining of large dip angle thick coal seam. Taking Panbei Coal Mine in Huainan as an example, the effect mechanism of water content, compression ratio and grain size grading o
Externí odkaz:
https://doaj.org/article/04032d17284e4e858a3766563fed19b7
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Fully mechanized caving is the most popular method for safe and efficient coal mining in China. In this study, based on the geological and mining conditions of Workface 822 of the Yuandian No. 1 Mine, we used theoretical analysis and numerical simula
Externí odkaz:
https://doaj.org/article/9b8dc31584fb496b98a5128d5938de66
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-18 (2022)
Abstract To explore the dynamic mechanical characteristics of CRCB specimens, a separated Hopkinson pressure bar (SHPB) test device combined with ultra-high-speed camera system was used to carry out the impact compression test on CRCB specimens. The
Externí odkaz:
https://doaj.org/article/37180e6cf6f348c8b40ac1163811d0ef
Fracture behavior and acoustic emission characteristics of sandstone samples with inclined precracks
Publikováno v:
International Journal of Coal Science & Technology, Vol 8, Iss 1, Pp 77-87 (2020)
Abstract Sandstone samples with precracks of different dip angles were collected from a coal mine roof and subjected to uniaxial compression tests, and acoustic emission (AE) and scanning electron microscopy (SEM) were used to study how the crack dip
Externí odkaz:
https://doaj.org/article/ee0e8f0529284f3f86460e1c5bca931b
Publikováno v:
Geofluids, Vol 2022 (2022)
Equivalent hydraulic aperture and fracture surface roughness are two significant factors affecting the fluid flow behaviors in rock fractures. To understand the role of fracture surface roughness and aperture in the fluid flow through 3D self-affine
Externí odkaz:
https://doaj.org/article/dcc9d52ad8be4c98b0f719cc839edb55
Publikováno v:
Geofluids, Vol 2022 (2022)
The compaction and consolidation process of a regenerated roof can be divided into two stages, namely, secondary fragmentation of crushed rock masses and pore structure adjustment. Therefore, the mechanical properties of the regenerated roof differs
Externí odkaz:
https://doaj.org/article/e595f21b20344a8d862c6bdde95692e0
Publikováno v:
Frontiers in Materials, Vol 8 (2021)
The compressive strength of filling body is an important index to characterize the filling and mining effect of coal mine. In order to accurately predict the strength of coal-based solid waste filler (CBSWF) to guide the safe, efficient, and green mi
Externí odkaz:
https://doaj.org/article/43c3aab3e1d14eb0a5bf6f444423b12e
Publikováno v:
Energy Exploration & Exploitation, Vol 39 (2021)
To explore the structure evolution of overlying strata and pressure characteristics of coal mining with large dip angle, the basic roof mechanical model was established that based on the thin plate theory and the development characteristics of 1212 (
Externí odkaz:
https://doaj.org/article/f7c480a9b3324db8afc08f5e722ad37b