Investigation on Rock Strata Fracture Regulation and Rock Burst Prevention in Junde Coal Mine
Open Access
- 25 September 2021
- journal article
- research article
- Published by Hindawi Limited in Mathematical Problems in Engineering
- Vol. 2021, 1-11
- https://doi.org/10.1155/2021/2583707
Abstract
Through the establishment of structural mechanics model, this paper analyzes the fracture of super thick rock stratum. Through the model, it can be seen that the fracture of low-level super thick rock stratum produces large elastic energy release and dynamic load, which is easy to produce disasters such as rock burst. The numerical calculation shows that under the influence of low hard and thick rock stratum, the leading area of coal mine roadway will produce energy concentration, and the coal pillar will also produce energy accumulation. Thick rock stratum is in bending state and has large bending elasticity. Coal pillar has large compression elasticity, which is the main reason for rock burst. The accumulation of elastic properties of overburden and rock burst caused by coal pillar energy storage can be effectively controlled by using advanced presplitting blasting, coal seam drilling pressure relief, and strengthening support.Keywords
Funding Information
- National Key Research and Development Plan (2018YFC1504902, 41941018)
This publication has 22 references indexed in Scilit:
- Study on the Mechanical Behavior of Double Primary Support of Soft Rock Tunnel under High Ground Stresses and Large DeformationAdvances in Civil Engineering, 2020
- Mechanism and Prevention of Rockburst in Steeply Inclined and Extremely Thick Coal Seams for Fully Mechanized Top-Coal Caving Mining and Under Gob Filling ConditionsEnergies, 2020
- Research on an automatic roadway formation method in deep mining areas by roof cutting with high-strength bolt-groutingInternational Journal of Rock Mechanics and Mining Sciences, 2020
- Numerical Analysis of Roadway Rock-Burst Hazard under Superposed Dynamic and Static LoadsEnergies, 2019
- Assessment and analysis of strata movement with special reference to rock burst mechanism in island longwall panelJournal of Central South University, 2017
- Mechanisms of rock burst in hard and thick upper strata and rock-burst controlling technologyArabian Journal of Geosciences, 2016
- Soft–strong supporting mechanism of gob-side entry retaining in deep coal seams threatened by rockburstInternational Journal of Mining Science and Technology, 2014
- Fracture characteristics in rock bolts in underground coal mine roadwaysInternational Journal of Rock Mechanics and Mining Sciences, 2013
- The controlling effect of thick-hard igneous rock on pressure relief gas drainage and dynamic disasters in outburst coal seamsNatural Hazards, 2013
- Rockburst hazard determination by using computed tomography technology in deep workfaceSafety Science, 2012