土工基础

›› 2017, Vol. 31 ›› Issue (2): 172-174.

• 工程实录 • 上一篇    下一篇

邵东石膏矿采空区场地稳定性评价

龙浩波1，张可能1，胡小林2   

  1. （1.有色金属成矿预测与地质环境监测教育部重点实验室，中南大学地球科学与信息物理学院，长沙 410083；2.湖南省地球物理地球化学勘察院，湖南邵阳 422002）
  • 收稿日期:2016-02-28 修回日期:2016-03-08 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:龙浩波（1988-），男，硕士研究生，研究方向为地质工程。

Site Stability Evaluation of a Mined-out Area in the Shaodong Gypsum Mine

LONG Haobo1, ZHANG Keneng1, HU Xiaolin2   

  1. (1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environmental Monitoring, Ministry of Education, School of Geosciences and InfoPhysics, Central South University, Changsha, 410083;
    2.Hunan Institute of Geophysical and Geochemical Exploration, Shaoyang 422002)
  • Received:2016-02-28 Revised:2016-03-08 Online:2017-04-20 Published:2017-05-04

摘要： 为了研究石膏矿采空区顶板和底板及开采前后地表位移和主应力变化，评估采空区稳定性。利用MIDAS/GTS建立三维数值模型，动态模拟邵东石膏矿采空区的开采过程，计算得出采空区顶板和底板最大位移分别为17.0 mm和11.8 mm，主应力最大11.75 MPa，均在安全允许值范围内。最后井下测绘复核和钻探结果验证数值模拟结果的合理性，为采空区安全评估建立理论模型和数据支撑。

关键词: MIDAS/GTS, 石膏矿采空区, 稳定性评价, 数值模拟

Abstract: A site stability evaluation on the mined out area was performed in order to study the ground subsidence as well as the principal stress change in both the roof and the bottom of a gypsum mine before and after the mined out area. The gypsum mining process was able to be simulated by establishing a threedimensional finite element model using MIDAS/GTS. The results indicate that the maximum vertical displacement at the roof and the bottom of the minedout area are 17.0 mm and 11.8 mm, respectively. The maximum principal stress is 11.75 MPa. All values are within the allowable range. The mining monitoring results and the bore holes demonstrated the consistency among between the simulated values and the measured.

Key words: MIDAS/GTS, Minedout Area, Stability Evaluation, Numerical Simulation