Zobrazeno 1 - 10
of 549
pro vyhledávání: '"udec"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 9, Pp 157-165 (2024)
In order to achieve the goal of reducing surface damage during coordinated mining of large dip (inclined) coal seams, taking the occurrence conditions of coal seams in a certain mine in Gansu Province as the background, UDEC numerical simulation soft
Externí odkaz:
https://doaj.org/article/770a3128c1e3460a8f016e1f33d38eb9
Stability of bedded rock slopes subjected to hydro-fluctuation and associated strength deterioration
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 8, Pp 3233-3257 (2024)
Reservoir-induced earthquakes (RIEs) occur frequently in the Three Gorges Reservoir Area (TGRA) and the rock mass strength of the hydro-fluctuation belt (HFB) deteriorates severely due to the reservoir-induced seismic loads. Three models of typical b
Externí odkaz:
https://doaj.org/article/cb151704da4846c18cb9a6a197ae74c0
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract The extraction of underground coal resources induces the fracture and movement of overlying strata, leading to geological hazards such as surface deformation, cracks, and even subsidence. Utilizing the analogous hyperbola model of overlying
Externí odkaz:
https://doaj.org/article/d5d57110cca240158f20099505091b49
Publikováno v:
Analytical and Numerical Methods in Mining Engineering, Vol 14, Iss 39, Pp 47-58 (2024)
Ground vibration is one of the detrimental effects associated with blasting that can damage the surrounding environment and nearby structures. In the Gol-Gohar mine in Sirjan, due to the surface expansion, the distance between the structures and the
Externí odkaz:
https://doaj.org/article/83934e5ed0884035ac8d9672419e0bbe
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-16 (2024)
Abstract The deformation and damage of soft rock roadways in karst mountainous area is serious, which greatly restricts the safe and efficient mining of coal resources. To explore the instability mechanism of soft rock roadway under the influence of
Externí odkaz:
https://doaj.org/article/1399500d34de4806bd4c063e343950cd
Publikováno v:
Underground Space, Vol 12, Iss , Pp 1-17 (2023)
Large deformations such as roof subsidence, floor heave, and two-sided deformations occur frequently in deep soft-rock roadways. The deformation becomes more severe under the combined effect of high in-situ and mining-induced stresses, which detrimen
Externí odkaz:
https://doaj.org/article/f8643ea084f64f43bb99ec3eaa71c7c4
Publikováno v:
Meikuang Anquan, Vol 54, Iss 9, Pp 174-179 (2023)
In order to explore the distribution rules of caving zone and water conducted zone of lower layer coal under the influence of mining on upper layer coal, based on theoretical analysis, distribution rules of floor fracture zone of upper coal layer and
Externí odkaz:
https://doaj.org/article/95fc70ff02934893ae1f7891ddaab4bc
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023)
AbstractCoal bursts caused by mining-induced seismicity occur in the working face in steeply inclined and extra thick coal seams (SIETCSs). This article presents a case study in SIETCS through discrete element simulation as well as field investigatio
Externí odkaz:
https://doaj.org/article/215274b8b1d54c998ca10bca20f42abf
Publikováno v:
International Journal of Mining and Geo-Engineering, Vol 56, Iss 4, Pp 349-359 (2022)
Incorrect estimation of undercut dimensions in the block caving method can lead to the cessation of caving operations and loss of a large portion of deposits. Numerical modeling is one of the methods for determining the minimum caving span. Numerical
Externí odkaz:
https://doaj.org/article/d38b5985d4d54df2a89b01bcfdae88de
Publikováno v:
International Journal of Coal Science & Technology, Vol 9, Iss 1, Pp 1-26 (2022)
Highlights: (1) Energy-absorption capacity of yielding rockbolts in rockbursts is evaluated. (2) Rock deformation and rockburst damage are quantitatively assessed. (3) Performance of yielding rockbolts in weak and strong rockbursts is studied. (4) Ef
Externí odkaz:
https://doaj.org/article/073fe82fe8a246649d2fc2ef6a2733c2