A5100423961- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Tailings Management and Properties
- Geotechnical and Geomechanical Engineering
- Grouting, Rheology, and Soil Mechanics
- Geophysical Methods and Applications
- Concrete and Cement Materials Research
- Geotechnical Engineering and Analysis
- Advanced Differential Equations and Dynamical Systems
- Tunneling and Rock Mechanics
- Landslides and related hazards
- Structural Response to Dynamic Loads
- Meromorphic and Entire Functions
- Magnesium Oxide Properties and Applications
- Seismic Performance and Analysis
- Civil and Geotechnical Engineering Research
- Geotechnical Engineering and Underground Structures
- earthquake and tectonic studies
China University of Mining and Technology
2015-2025
Henan Polytechnic University
2025
Qingdao University of Technology
2024
Xi'an University of Architecture and Technology
2022-2023
Ministry of Education of the People's Republic of China
2023
Taiyuan University of Technology
2022
Lanzhou University of Technology
2011
Abstract To ameliorate the defects of insufficient support resistance traditional roadside filling bodies for gob-side entry retaining (GER), overcome inability to adapt deformation surrounding rock, and isolate goaf effectively, a new type high-water material as body GER technology with double roadways was proposed. The instability analysis control by into gently inclined coal seam were studied. basic mechanical properties investigated through laboratory experiments, their main advantages...
Abstract Regarding the issue of intense mining pressure appearing in underlying gateway below remaining coal pillar close‐distance seam (the is perpendicular to section pillar), 401 working face used as engineering background. Field measurements, laboratory experiments, numerical simulations, and verification techniques are study abutment pressure's evolution properties plastic zone's propagation laws before after roadway experienced impact. The conclusions follows: ① maximum area on two...
Close-distance coal seams are common in underground mining, and their spacing is short, which produces strong mining disturbance. In instances where the upper seam has been mined a goaf formed, notable issue arises during lower seam’s characterized by substantial deformation of roadway along goaf. Field exploration three-dimensional geological modeling have revealed that fourth sixth working faces pillar No. 5 all under 2’s goaf, with an average distance 16.70 m. Simultaneously, double...
Fault slip burst is a serious dynamic hazard in coal mining. A static and analysis for fault was performed to assess the risk of rock burst. numerical model <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msup><mml:mrow><mml:mtext>FLAC</mml:mtext></mml:mrow><mml:mrow><mml:mtext>3D</mml:mtext></mml:mrow></mml:msup></mml:mrow></mml:math> established understand stress state mechanical responses system. The results obtained from show that behavior induced by waves...
Abstract Extra‐thick coal seams are widely distributed in the Datong mine area China. The rapid stopping of mining and support withdrawal technology for extra‐thick need to be developed urgently. reasonable top caving distance, main roof's fracture line position, large section roadway during period (LSRSP) method header face 15 m seam systematically studied by using field measurement, experiment, numerical simulation, similar material simulation methods. With increase range medium low...
Based on the existing model of pipe-roof considering arching effect, combined with mechanical when tunnel is excavated to end, a unified elastic foundation beam for established. Deflection and internal force calculation formulas were derived. Combined actual engineering cases, was compared analyzed, parameters affecting analyzed by taking as an example. The results show that established can better represent stress state has strong applicability. at end excavation be calculated changing...
In order to better study the movement principles of overlying strata during backfill mining, we established a thin plate model on an elastic foundation with boundary main roof. And by finite difference method, variation roof’s principal moments and maximum subsidence ω 0 coefficient k 1 coal seam, 2 body, thickness h , Young’s modulus E Poisson’s ratio μ roof are calculated studied. Using these calculations, were able determine that had three bending moment extreme points, including M zz in...
Previous studies have shown that the influence of deep dynamic pressure on surrounding rock control a coal roadway is one difficulties in mine support. Based investigation headgate 11231 mine, this study analyzes damage characteristics affected by pressure, expounds controlling rock, and creatively proposes cooperative technology external anchor–internal unloading for regulating large deformation roadways. The vertical stress distribution transfer law with different hole-making depths,...
The hazardous effect of a mine earthquake on roadway is not only related to its energy scale but also distance from the roadway. In this study, signal attenuation model and disaster-causing were established evaluate effects based peak particle velocity (PPV) data recorded for 37221-1 upper Dongxia Coal Mine, China. characteristic dynamic loads due propagation surfaces was researched, critical PPV values identified using FLAC3D numerical simulation, which can be used anti-burst performance...
Paste backfill prepared with ultrafine tailings often faces difficulties in meeting engineering requirements. To address the challenge of using tailings, this work utilized a slag cemented paste (SCUPB) composed slag, Portland cement, and desulfurized gypsum as cementitious materials, binder–tailing ratio 1:4 solid mass concentration 60%. The fluidity compressive strength SCUPB were tested at 3 days, 7 28 while microstructure hydration process studied by scanning electron microscopy...
Abstract Coal bursts are one of the formidable hazards in underground coal mines, yet it is still not fully explored due to complex stress environment that exists during mining. To better understand bursting mechanism under real-time mining conditions, necessary develop an experimental method capable reproducing situ and loading-unloading paths conditions. In this study, a self-developed true triaxial testing system was used investigate damage failure characteristics samples loading dynamic...
After monolithic translation of superstructure, the upper structure and new foundation should be connected effectively. Installations isolators between topside base are not only make full use material, but also enhance security building. For masonry integral translation, double columns with coupling beam vertical bearing component formed. Combined action horizontal seismic load can generate additional bending moment in this component. Finite element model is set up according to...