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Innovation and future of mining rock mechanics

Journal of rock mechanics and Geotechnical Engineering 2021年第1期13卷 1-21页

作者： Manchao He Qi Wang Qunying Wu Key Laboratory for Geo-mechanics and Deep Underground Engineering China University of Mining and TechnologyBeijing100083China Research Institute for Deep Underground Science and Engineering of Beijing China University of Mining and TechnologyBeijing100083China Shanbei Coal Industry Co. Ltd.Shaanxi Shanmei GroupYulin719000China

The 121 mining method of longwall mining first proposed in England has been widely used around the *** method requires excavation of two mining roadways and reservation of one coal pillar to mine one working *** to considerable excavation of roadway,the mining roadway is generally destroyed during coal *** stress concentration in the coal pillar can cause large deformation of surrounding rocks,rockbursts and other disasters,and subsequently a large volume of coal pillar resources will be *** improve the coal recovery rate and reduce excavation of the mining roadway,the 111 mining method of longwall mining was proposed in the former Soviet Union based on the 121 mining *** 111 mining method requires excavation of one mining roadway and setting one filling body to replace the coal pillar while maintaining another mining roadway to mine one working ***,because the stress transfer structure of roadway and working face roof has not changed,the problem of stress concentration in the surrounding rocks of roadway has not been well *** solve the above problems,the conventional concept utilizing high-strength support to resist the mining pressure for the 121 and 111 mining methods should be *** idea is to utilize mining pressure and expansion characteristics of the collapsed rock mass in the goaf to automatically form roadways,avoiding roadway excavation and waste of coal *** on the basic principles of mining rock mechanics,the“equilibrium mining”theory and the“short cantilever beam”mechanical model are *** technologies,such as roof directional presplitting technology,negative Poisson’s ratio(NPR)high-prestress constant-resistance support technology,and gangue blocking support technology,are developed following the“equilibrium mining”***,the 110 and N00 mining methods of an automatically formed roadway(AFR)by roof cutting and pressure releasing without pillars are *** mining metho

关键词： mining rock mechanics Equilibrium mining theory Short cantilever beam model Automatically formed roadway without pillars Intelligent mining

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