›› 2019, Vol. 33 ›› Issue (1): 62-65.

• 工程实录 • 上一篇    下一篇

基于FLAC的采空区风险评价研究

李建红1,黄 鑫2,马安锋3,许 锐4   

  1. (1.北京爱地地质勘察基础工程公司,北京 100041;2. 航天科工惯性技术有限公司,北京 100074;3.陕西省地矿局西安中勘工程有限公司,西安 710016;4.长安大学 地质工程与测绘学院,西安 710054)
  • 收稿日期:2018-05-22 修回日期:2018-06-11 出版日期:2019-03-02 发布日期:2019-03-08
  • 作者简介:李建红(1980-),男,高级工程师,研究方向为付贤炜地质工程、岩土工程。
  • 基金资助:

    长安大学中央高校基本科研业务费专项资金项目(310826171013),国家自然科学基金资助项目(编号:41572261)

Stability Risk Assessment of Ground Above Abandoned Mines by FLAC3D

LI Jianhong1, HUANG Xin2, MA Anfeng3, XU Rui4   

  1. (1.Beijing Aidi Geological Investigation & Foundation Construction Company, Beijing 100041;
    2.Aerospace Industry Inertial Technology Co., Ltd., Beijing 100074;
    3.Xi’an Exploration Engineering Co. Ltd., Shaanxi Geology and Mineral Bureau, Xi’an 710016;
    4.College of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054)
  • Received:2018-05-22 Revised:2018-06-11 Online:2019-03-02 Published:2019-03-08

摘要: 针对采空区地面塌陷危险性评价这项复杂的系统工程,应用FLAC3D数值模拟进行塌陷过程分析,最终综合理论分析法对采空区地面塌陷进行预测,分析影响程度,对采空区地面塌陷风险进行客观、科学的评价,并提出相应的应对治理措施。分析评价结果表明,该区域煤矿开采方式是影响采空区地面塌陷的主要因素,所提出的基于FLAC的采空区地面塌陷风险评估方法能有效地进行事故分析,为后期工程事故预测与防治提供更加精准的依据,在工程领域具有较高的应用价值。

关键词: FLAC3D, 风险评价, 地面塌陷, 数值模拟

Abstract: The stability risk hazard assessment of the ground surface above the abandoned mine is complicated and factors might result in the collapse. In this paper, the collapse process is numerically simulated by a commercial software FLAC and the probability of collapse of the ground is predicted using comprehensive analytical methods. Mitigation methods of the collapsed ground are also proposed in the paper. The results indicate that the collapse hazard of ground above the abandoned mines is mainly contributed by the mining methods. The stability risk evaluation method proposed in the paper can provide a relatively accurate risk prediction for the remediation.

Key words: FLAC3D, risk assessment, ground collapse, numerical simulation