|本期目录/Table of Contents|

[1]谢志钢,刘启蒙,柴辉婵,等.煤层底板隐伏陷落柱突水预测及采前注浆加固评价[J].中国安全生产科学技术,2019,15(5):105-110.[doi:10.11731/j.issn.1673-193x.2019.05.017]
　XIE Zhigang,LIU Qimeng,CHAI Huichan,et al.Prediction of water inrush from hidden collapse column at coal seam floor and evaluation of grouting reinforcement before mining[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(5):105-110.[doi:10.11731/j.issn.1673-193x.2019.05.017]
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煤层底板隐伏陷落柱突水预测及采前注浆加固评价
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年5期
页码:
105-110
栏目:
职业安全卫生管理与技术
出版日期:
2019-05-31

文章信息/Info

Title:
Prediction of water inrush from hidden collapse column at coal seam floor and evaluation of grouting reinforcement before mining
文章编号:
1673-193X(2019)-05-0105-06
作者:
谢志钢; 刘启蒙; 柴辉婵; 琚棋定; 李竞赢; 饶家健
（安徽理工大学 地球与环境学院，安徽 淮南 232001）
Author(s):
XIE Zhigang;  LIU Qimeng;  CHAI Huichan;  JU Qiding;  LI Jingying;  RAO Jiajian
(School of Earth and Environment, Anhui University of Science and Technology, Huainan Anhui 232001, China)
关键词:
陷落柱; 数值模拟; 采矿工程; 水文地质
Keywords:
collapse column;  numerical simulation;  mining project;  hydrogeology
分类号:
X936;TD712
DOI:
10.11731/j.issn.1673-193x.2019.05.017
文献标志码:
A
摘要:
华北型煤矿开采受底板岩溶强含水层威胁，通过对淮南张集矿1613A工作面底板隐伏岩溶陷落柱突水危险性分析，采用FLAC3D方法模拟采动条件下岩溶陷落柱活化过程。模拟结果显示:陷落柱上方的煤层底板岩体发生塑性变形，导致陷落柱附近岩体失稳，陷落柱筒壁产生局部剪切破坏，剪切破坏位置易导致奥灰强含水层发生陷落柱突水。采前采用注浆方法改造岩溶陷落柱，对改造后的陷落柱进行数值模拟分析，其内部注浆岩体对陷落柱筒壁具有良好的支撑作用，抑制了筒壁位置剪切破坏的发生，使有效隔水层厚度增大，降低了陷落柱突水的危险性。
Abstract:
The coal mining of NorthChinaType coalfields has been threatened by the karst strong aquifer at floor. The hazard of water inrush from the hidden karst collapse column at the floor of 1613A working face in Zhangji Mine, Huainan was analyzed, and the activation process of karst collapse column under the mining conditions was simulated by using the FLAC3D method. The simulation results showed that the rock mass at the coal seam floor above the collapse column occurred the plastic deformation, which caused the instability of rock mass near the collapse column, and the barrel wall of collapse column occurred the local shear failure, so the water inrush from collapse column in the ordovician limestone strong aquifer was easily to occur in the position of shear failure. The karst collapse column was transformed by using the grouting method before mining, and the numerical simulation analysis was conducted on the collapse column after transformation. The rock mass with internal grouting played good support role on the barrel wall of collapse column, which prohibited the occurrence of shear failure in the position of barrel wall, increased the thickness of effective aquifuge, and reduced the hazard of water inrush from collapse column.

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备注/Memo

备注/Memo:
收稿日期： 2019-04-03；数字出版日期： 2019-05-23
基金项目： 国家重点研发计划项目（2017YFC0804101）；安徽省自然科学基金机理研究项目（1908085ME145）
作者简介： 谢志钢，硕士研究生，主要研究方向为地下水科学与工程。
更新日期/Last Update: 2019-06-11