文献类型：期刊文献

英文题名：Optimum Selection of Mining Plans for Pillars Containing Interlayers Based on Numerical Simulation

作者：Hu, Gaojian[1,2,3];Yang, Tianhong[4]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China;[3]Zhejiang Collaborat Innovat Ctr Prevent & Control, Shaoxing 312000, Zhejiang, Peoples R China;[4]Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Liaoning, Peoples R China

年份：2022

卷号：2022

外文期刊名：MATHEMATICAL PROBLEMS IN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000807345500012)、、EI(收录号：20221611974049)、Scopus(收录号：2-s2.0-85128175497)、WOS

基金：The authors appreciate the support of the Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geological Hazards (PCMGH-2017-Y-05), Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (ZGRMG-2019-07), and Shaoxing City Public Welfare Technology Application Research Project (2018C30006).

语种：英文

外文关键词：Marble - Numerical models - Room and pillar mining - Stress concentration

外文摘要：A reasonable selection of the pillar mining plan is the key to ensure smooth mining in the goaf group, which plays an important part in safe production. In formulating and optimizing the pillar mining plan, the influence of the ground pressure evolution law should be fully considered. This paper first introduces two mining plans for pillars, and then, numerical simulations were used to analyze the two mining plans from four perspectives such as stress evolution law, stress concentration degree, force state of pillars, and weak marble layers. The results show that the mining plan 1 that retreats from the middle of the ore body to the two wings is the optimal as it can realize sequential mining in high-stress concentration areas at the middle section. This effectively alleviates the stress on the surrounding rock during mining and will not aggravate the collapse of the marble-interbedded area.