Study on Surrounding Rock Failure Analysis and Novel Stability Control Approach for High-Stress Gob-Side Roadway Retaining
Source abstract
Abstract
The high stress environment and hard roof conditions seriously limit the application of gob-side roadway retaining. To achieve non-coal pillar mining, this study proposes a novel method combining roadside filling and roof cutting under stress-release and strong support synergy. Mechanical modeling reveals surrounding rock failure mechanisms in high-stress gob-side roadway retaining. Numerical simulations show the new method reduces surrounding rock stress/displacement more effectively than conventional gob-side roadway retaining. Optimized parameters were validated via field tests, confirming significant control of rock deformation under complex high-stress conditions. The method successfully enables non-coal pillar mining, providing a scientific basis for similar applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geomechanics and Mining Engineering · Geoscience and Mining Technology · Rock Mechanics and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China Coal Research Institute, Beijing 100013, China
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Funding
National Natural Science Foundation of China · National Key Research and Development Program of China · China Postdoctoral Science Foundation-CCTEG Joint Support Program · the Science and Technology Development Fund Project of China Coal Research Institute · Science and Technology Innovation Fund of TianDi Science and Technology Co., Ltd
References (33)
Show source-provided references
1. Chinese coal supply and future production outlooks10.1016/j.energy.2013.07.031 ↗
2. Analysis of tensile mechanical characteristics of fibre reinforced backfill through splitting tensile and three-point bending tests10.1080/17480930.2021.2014693 ↗
3. Relationship of brittleness and fragmentation in brittle compression10.1016/j.enggeo.2017.02.029 ↗
4. Study on repair control technology of soft surrounding rock roadway and its application10.1016/j.engfailanal.2018.06.006 ↗
5. Characteristics of coal resources in China and statistical analysis and preventive measures for coal mine accidents10.1007/s40789-023-00582-9 ↗
6. Geotechnical assessment of the bearing capacity of coal mine floors10.1007/BF00880928 ↗
7. A novel method of deep and shallow combined roof cutting and constant resistance support for enhancing deep mining roadway stability
8. Discrete-event simulation of mine equipment systems combined with a reliability assessment model based on genetic algorithms10.1080/17480930701589674 ↗
9. Function development for appraising brittleness of intact rocks using genetic programming and nonlinear multiple regression models10.1007/s00366-016-0441-6 ↗
10. Fracture failure analysis of hard and thick key layer and its dynamic response characteristics10.1016/j.engfailanal.2019.01.008 ↗
11. A numerical study of stress changes in barrier pillars and a border area in a longwall coal mine10.1016/j.coal.2012.12.008 ↗
12. Stability mechanism and control technology for fully mechanized caving mining of steeply inclined extra-thick seams with variable angles
13. A new approach to rock brittleness and its usability at prediction of drillability10.1016/j.jafrearsci.2016.03.017 ↗
14. Roof deformation associated with mining of two panels in steeply dipping coal seam using subsurface subsidence prediction model and physical simulation experiment
15. The gob-side entry retaining with the high-water filling material in Xin’an Coal Mine
16. Improved compound support system for coal mine tunnels in densely faulted zones: A case study of China’s Huainan coal field10.1016/j.enggeo.2018.04.006 ↗
17. Coordinated supporting method of gob-side entry retaining in coal mines and a case study with hard roof
18. Floor heave mechanism for gob-side entry retaining with concrete blocks and control method: A case study10.1016/j.undsp.2023.09.002 ↗
19. Deformation and failure mechanism of surrounding rocks in crossed-roadway and its support strategy10.1016/j.engfailanal.2020.104743 ↗
20. Study on the technology and application of cooperative roadway protection with roof cutting pressure relief and CO2 mineralization and filling
21. Determination of reasonable width of filling body for gob-side entry retaining in mining face with large cutting height
22. Predictive model for the instability of flexible formwork concrete wall in secondary mining of non-pillar coal mining
23. Ground control method of using roof cutting pressure release and energy-absorbing reinforcement for roadway with extra-thick hard roof10.1007/s00603-023-03461-6 ↗
24. Strata behaviour and stability control of the automatic roadway formation by roof cutting below a fault influenced longwall goaf10.1038/s41598-022-20810-7 ↗
25. Design principles and key technologies of gob side entry retaining by roof pre-fracturing10.1016/j.tust.2019.05.013 ↗
26. Case study on pressure-relief mining technology without advance tunneling and coal pillars in longwall mining10.1016/j.tust.2019.103236 ↗
27. Du, Z.W., Chen, S.J., Ma, J.B., Guo, Z.P., and Yin, D.W. (2020). Gob-side entry retaining involving bag filling material for support wall construction. Sustainability, 12.10.3390/su12166353 ↗
28. A novel method of combined deep hole blasting for gob-side roadway protection10.1007/s00603-023-03234-1 ↗
29. Study on stability mechanism and control techniques of surrounding rock in gob-side entry retaining with flexible formwork concrete wall10.1007/s11771-023-5436-z ↗
30. Stability analysis of integral load-bearing structure of surrounding rock of gob-side entry retention with flexible concrete formwork10.1016/j.tust.2020.103492 ↗
31. Meso- and macroeffects of roof split blasting on the stability of gateroad surroundings in an innovative nonpillar mining method10.1016/j.tust.2019.04.025 ↗
32. Study on the method of pressure relief and energy absorption for protecting roadway under thick and hard roof10.1007/s00603-023-03447-4 ↗
33. Wang, Y.J., Gao, Y.B., Wang, E.Y., He, M.C., and Yang, J. (2018). Roof deformation characteristics and preventive techniques using a novel non-pillar mining method of gob-side entry retaining by roof cutting. Energies, 11.10.3390/en11030627 ↗