Results 51 to 60 of about 1,604,914 (120)
Deep Underground Science and Engineering, EarlyView.For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley +1 more source
Geofluids, 2023 Responding to severe surrounding rock deformation failures and other problems in roadways in western China with large mining heights and intense mining, the work presented in this paper studied the mechanism of surrounding rock deformation failures in ...
Dong Xu, Mingshi Gao, Xin Yu
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study reveals the failure evolution characteristics of deep cross‐fault roadway surrounding rock under excavation support and periodic weighting. Periodic weighting readily induces fault activation, with the spatial distribution of failed rock masses being controlled by the fault strike and dip.
Tiezhu Li +4 more
wiley +1 more source
Mechanism and Control of Cable Breakage in a Roadway with Thick Top Coal in a Rockburst Mine
Advances in Civil Engineering, 2021 Because top coal is not stable, a roadway with thick top coal often appears to mine pressure problems, such as bolt failure, cable breakage, and roof caving. In particular, these problems are more serious in rockburst mines.
Ying Xu, Xiekang Zhou, Weimei Gong
doaj +1 more source
Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas
Deep Underground Science and Engineering, EarlyView.This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou +9 more
wiley +1 more source
Approximate solution of plastic zone boundary of surrounding rock of circular roadway considering axial stress [PDF]
, 2023 In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress is ...
Shengjie WEI +7 more
core +1 more source
, 2022 The coal resources in the coal-rich area of western China are mostly located in the late diagenetic Cretaceous and Jurassic strata. In this paper, a study on the support of soft rock roadways was carried out in the background of the soft rock track ...
Qiangling Yao +4 more
core +1 more source
Geofluids, 2021 The expansion of the roadway surrounding rock failure zone may connect the floor aquifer and cause the roadway water inrush. In order to reveal the mechanism of the roadway water inrush above confined water, we established the force model of the roadway ...
Xiaofei Guo +7 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao +7 more
wiley +1 more source
Surrounding rock control technology of gob-side entry retaining in deep high mining face
Meikuang AnquanUnder the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG +5 more
doaj +1 more source