采矿与安全工程学报 ›› 2016, Vol. 33 ›› Issue (1): 96-101.

• 论文 • 上一篇    下一篇

膏体充填综采底板破坏规律与实测研究

  

  1. 1.中国矿业大学矿业工程学院,深部煤炭资源开采教育部重点实验室,江苏 徐州 221116; 2.山东省充填开采工程技术研究中心,山东 淄博 255000
  • 收稿日期:2015-01-20 出版日期:2016-01-15 发布日期:2016-03-01
  • 作者简介:常庆粮(1980-),男,安徽省淮北市人,博士,讲师,从事固体废物膏体充填开采、矿山压力及围岩控制方面的研究。
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2015CB251600);江苏高校优势学科建设工程项目;泰山学者建设工程专项经费项目(201309)

Study on field measurement and floor failure law of paste filling fully mechanized mining

  • Received:2015-01-20 Online:2016-01-15 Published:2016-03-01

摘要: 针对承压水上煤炭资源安全开采的难题,以河南焦煤集团朱村煤矿承压水上膏体充填开采为工程背景,采用理论计算、数值模拟分析和现场实测的方法,研究了膏体充填开采底板破坏规律及演化特征,并对膏体充填开采底板破坏范围和突水性进行了预测研究,揭示了膏体充填开采控制底板破坏的力学机理。研究表明:煤矿底板破坏深度随采高的增加而逐渐增大,但当增加到一定高度(1.8 m)后,底板破坏深度趋于某一相对稳定值;膏体充填综采可使得底板破坏深度由垮落法开采的 12.0 m左右,减小到 2.0 m左右,突水系数由 0.19 ~ 0.56减小到 0.08 ~ 0.20;实测表明: 膏体充填综采完整区域底板最大破坏深度约 4 m, 断层影响处底板最大破坏深度范围为 10.0 ~ 12.0 m,膏体充填综采过程中未出现突水灾害。膏体充填综采相当于降低了煤层采高,相对增加了底板隔水层厚度,有效提高矿井开采的安全保障度。

关键词: 膏体充填, 底板破坏, 带压开采, 承压水

Abstract: To solve the safety problem of coal mining above confined water, based on the engineering background of paste filling mining above confined water in Zhucun colliery of Henan Energy and Chemical Industry Group, using the theoretical calculation, numerical simulation analysis and field measurement method, failure laws of floor and evolution characteristics in paste filling mining have been studied , and prediction research of floor failure scope and water-inrush character of paste filling mining has been conducted, which has in the end revealed the mechanical mechanism of control floor failure in paste filling mining. Research has shown that the floor failure depth increases with the increase of mining height, but when added to a certain height (1.8 m), the floor failure depth tends to a relatively stable value; paste filling fully mechanized mining can make floor failure depth of about 12.0 m by the method of caving mining, reduce to about 2.0 m, and the water inrush coefficient reduce from 0.19-0.56 to 0.08-0.20. Actual measurement has shown that the maximum floor failure depth in full area of paste filling fully mechanized mining is about 4 m, and in area influenced by fault ranges from 10.0 m to 12.0 m. Water inrush disaster has not appeared in any process of paste filling fully mechanized mining, and the safety degree of mine extracting has been improved by lowering mining height and relatively increasing the thickness of water-resisting floor.

Key words: paste-filling, failure floor, aquifer mining, confined aquifer