A5103188567- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Geoscience and Mining Technology
- Tunneling and Rock Mechanics
- Geotechnical and Geomechanical Engineering
- Geotechnical Engineering and Analysis
- Geophysical Methods and Applications
- Civil and Geotechnical Engineering Research
- Underground infrastructure and sustainability
- Coal Properties and Utilization
- Geotechnical Engineering and Underground Structures
- Landslides and related hazards
- Mineral Processing and Grinding
- Safety and Risk Management
- Structural Analysis of Composite Materials
- Structural Response to Dynamic Loads
- Masonry and Concrete Structural Analysis
- Structural Engineering and Vibration Analysis
- Grouting, Rheology, and Soil Mechanics
China University of Mining and Technology
2010-2024
State Key Laboratory for Geomechanics and Deep Underground Engineering
2010-2020
Institute of Rock and Soil Mechanics
2010
Abstract The changes associated with the cutting roof and release pressure mining method in three zones that are susceptible to spontaneous combustion goaf “Y” type ventilation system were studied. For investigated underground coal mine working face, its of have a “U” for traditional method. These systems monitored using beam tube method, evolution characteristics was analysed. monitoring data showed when system, scattered tropical zone converts into oxidation heating after 68.5 m goaf,...
The Shenbei mining area in China contains typical soft rock from the Tertiary Period. As depths increase, deep roadways are damaged by large deformations and constantly need to be repaired meet safety requirements, which is a great security risk. In this study, characteristics of deformation failure roadway were analyzed, fundamental reason for was that traditional support methods materials cannot control rock. Deep technology developed based on constant resistance energy absorption using...
The crushed rocks are used as a filling material in mined-out areas of underground mining. Compared with the man-made materials, exhibit higher compressibility and lower stability, which may result instability surrounding rock surface subsidence. To study creep compaction behavior mudstones, series tests conducted. investigations show that mudstones is highly dependent on original grain composition axial stress applied samples. samples more large particles easier to deform at initial loading...
In case of deep mining engineering, the conventional gob-side entry retaining (GER) method encounters inevitable difficulties, due to high stress, dynamic disturbance and large deformation issues. Recently, an innovative no-pillar approach GER is proposed applied in several realistic cases. According approach, two novel techniques, pre-fracturing on roof before activities, a support system with good energy-absorbing capacity, make it possible effectively restrain surrounding rock. this...
In order to increase the mining rate of underground coal resources, an innovative nonpillar approach (fracturing roofs maintain entry (FRME)) has been widely applied in China. The effect roof fracturing determines whether can be retained successfully or not. this work, tail 21304 panel Chengjiao Coal Mine (China) considered as test site. mine is located approximately 900 m underground. A numerical investigation on relationship between stability and angle was conducted. investigate reasonable...
The effect of conventional bolt support is not ideal due to the large deformation character soft rock.As an innovative bolt, constant resistance (CRLD) has been successfully applied swelling rock engineering, but reinforcement mechanism yet clear.To investigate interaction between and surrounding rock, Nanshan Coal Mine China was selected as engineering background.The plastic zone mass axial force three bolts were obtained by theoretical analysis FLAC3D numerical simulation.Failure processes...
Pressure relief for roadways retained by roof cutting is essentially caused stress transfer. In this paper, the transfer mechanism of 16011 tail entry with in Zhaogu No.1 coal mine studied from following two aspects: change surrounding rock structure and interaction between roadway supporting structures. It found numerical simulation that can significantly reduce magnitude stress, transferring concentrated induced excavation mining away roadway, forming an obvious triangle pressure area...
Abstract Not only is the thermal environment of coal mining face related to temperature surrounding rock, it also closely associated with ventilation model working face. In this study, numerical methods were applied study impact two major systems on airflow in coalmine. Firstly, a heat transfer rock and was established reveal that wall roughness could enhance between airflow. Moreover, an analysis conducted under different modes first According analytical results, U-type system lower than...
Fracturing roofs to maintain entry (FRME) is a novel longwall mining method, which has been widely used in China, leading new revolution. In order research the change law of side abutment pressure and movement overlying strata when using FRME, monitoring device, namely, flexible detection unit (FDU), developed applied field. The results show that compared with head (also called non-splitting entry), peak value lateral tail termed splitting entry) reduced by 17.2% on average, fluctuation...
To comprehensively investigate the influence of water content on mechanical and crack propagation characteristics coal rock assemblage (CRA) with a rough interface, uniaxial compression tests were conducted specimens varying content. Nuclear magnetic resonance (NMR) acoustic emission (AE) techniques employed to monitor AE signals throughout experiment. The physical properties, as well extent development parameters, investigated under conditions erosion. results demonstrate that interface...