Results 11 to 20 of about 64,796 (273)
Analyzing dynamic disturbance fragmentation mechanism of surrounding rock in roadway roof [PDF]
Journal of Vibroengineering, 2019 In this paper, a numerical simulation is conducted to analyze an engineering practice pertaining to the in panel 2347, the discussion is focused on the following aspects: the influence of fault mining activation on fragmentation of surrounding rock in ...
Hongfei Gu +4 more
core +3 more sources
Analysis of Influence of Stress Lode Angle on Stability of Roadway Surrounding Rock
Shock and Vibration, 2021 Based on the variation range of the stress lode angle, the in situ rock stress is divided into σv-type stress field, σH-type stress field, and σh-type stress field.
Yihong Liu +5 more
doaj +2 more sources
Research progress of support theory and technology of the roadway surrounding rock based on the plastic zone control [PDF]
Meitan xuebaoWith the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Weijun WANG +3 more
doaj +3 more sources
Fracture distribution and deformation mechanism of surrounding rock in two-way extremely unequal pressure soft rock roadway [PDF]
Meitan xuebaoThe failure of butterfly plastic zone in roadway surrounding rock is an important reason for the large deformation of roadway surrounding rock. In recent years, it has attracted the attention of roadway support workers.
Weijun WANG +5 more
doaj +3 more sources
Study on the in-situ modified support method of roadway surrounding rock under vertical impact load [PDF]
Scientific ReportsWith the deepening of coal mining, the frequency and intensity of rock burst accidents are increasing. According to incomplete statistics, there have been over 200 rock burst accidents in tunnels in China alone from 2005 to 2024, resulting in more than ...
Heng Zhang +11 more
doaj +2 more sources
Stability Control Mechanism of High‐Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling [PDF]
Advances in Civil Engineering, 2021 Large deformation of roadway and coal bump failures have always been the focus in deep underground engineering. By considering the Lu’an mining district in China, the failure mode and stability improvement process of high‐stress roadways were analysed with the field tests and numerical simulations.
Fuzhou Qi +6 more
openaire +3 more sources
Frontiers in Earth ScienceChina’s coal mines are mainly underground mines, and a large number of roadways have to be excavated underground. It is of great significance for coal mine production to adopt safe and reasonable roadway support methods.
Wanwei Fang +7 more
doaj +2 more sources
Geomatics, Natural Hazards & RiskTo prevent severe damage to the surrounding rock of the roadway under the high ground pressure within deep mining, the stress evolution of the surrounding rock was studied, and the surrounding rock control technology in the II1057 roadway of ...
Huaibin Li +4 more
doaj +2 more sources
Energy Science & EngineeringTo solve the problem of controlling large deformation of surrounding rock in deep soft rock roadway, the distribution characteristics and deformation mechanism of surrounding rock cracks in soft rock roadway under different lateral pressure coefficients ...
Yujie Ma +5 more
doaj +2 more sources
Scientific ReportsThe collapse column may result in failure of the surrounding rock during roadway excavation. It is of considerable importance to elucidate the failure characteristics and develop the corresponding control technologies for the surrounding rock. A discrete fracture mesh (DFN) and a strain-softening constitutive model are employed to simulate the ...
Ce Jia +4 more
openaire +4 more sources