采矿与安全工程学报 ›› 2014, Vol. 31 ›› Issue (1): 84-89.

• 论文 • 上一篇    下一篇

双柳煤矿陷落柱发育特征及突水危险性分析

  

  1. 1.河南理工大学能源科学与工程学院,河南 焦作 454010;2.华北科技学院安全工程学院,河北 三河 065201;3.山西焦煤集团有限责任公司,山西 太原 030053
  • 出版日期:2014-01-15 发布日期:2014-02-26
  • 作者简介:李振华(1979-),男,山东省金乡县人,博士,副教授,从事资源开发新技术和矿山水害防治方面的研究。 E-mail:jzlizhenh@163.com Tel:15978790618
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2007CB209402);国家自然科学基金项目(51104058);教育部高等学校博士学科点专项科研基金项目(20114116120005)

Analysis on development characteristics of Karst collapse column and water inrush risk in Shuangliu coal mine

  • Online:2014-01-15 Published:2014-02-26

摘要: 为解决采动过程中陷落柱活化导通奥灰水造成矿井突水事故的问题,采用理论分析、现场观测的手段从几何参数、发育特征、出现前兆和分布特征等4个方面分析归纳双柳煤矿陷落柱的基本特征,认为陷落柱主要发育在浅部,附近通常伴有小断层,周围煤岩层产状发生变化,主要分布在奥灰岩溶溶孔、溶洞发育比较强烈的区域。以双柳煤矿220工作面的X15陷落柱为例,通过FLAC3D软件模拟分析上组煤开采过程中陷落柱在采动影响下突水的危险性。研究结果表明:随着工作面的推进,陷落柱周边的塑性破坏场、渗流场和应力场发生变化,当工作面推进至距陷落柱30 m处,塑性破坏场与渗流场开始接触;距离10 m处,破坏区触及渗流区域的较高压区域,具有高突水危险。

关键词: 陷落柱, 发育特征, 数值模拟, 突水危险

Abstract: In order to prevent Karst collapse column conducting ordovician limestone water and making great mine flood, the basic characteristics of Karst collapse column in Shuangliu coal mine are studied by geometric parameters, development characteristics, precursory and distribution characteristics through theoretical analysis and field observation. It indicates that Karst collapse column mainly develops in shallow parts with small faults, while the attitude of coal and rocks is mainly distributed within ordovician limestone Karst dissolution pore and cave development region. Taking X15 Karst collapse column from 220 working face in Shuangliu coal mine as an example, the water inrush risk is analyzed by FLAC3D during mining upper coal group when there is Karst collapse column. The results show that: with working face moving forward, plastic failure fields, stress and seepage field of surrounding Karst collapse column begin to change. When the face moves to 30 m from the Karst collapse column, the plastic failure fields and seepage field begin to contact with each other, and with the face advancing, it extends to heavy water inrush risk.

Key words: Karst collapse column, development characteristics, numerical simulation, water inrush risk