煤炭工程 ›› 2015, Vol. 47 ›› Issue (5): 42-44.doi: 10.11799/ce201505015

• 施工技术 • 上一篇    下一篇

近距离下位煤层开采留巷强化支护技术研究

万峰1,张洪清1,韩振国1,2,邵晓峰1,2   

  1. 1. 扎赉诺尔煤业有限责任公司
    2.
  • 收稿日期:2014-03-09 修回日期:2014-05-16 出版日期:2015-05-11 发布日期:2015-05-20
  • 通讯作者: 万峰 E-mail:wuzhaohua0104@163.com

The Research on strengthening support of Retaining-Roadway in Close-Distance Seams Mining

  • Received:2014-03-09 Revised:2014-05-16 Online:2015-05-11 Published:2015-05-20

摘要: 为了解决黄白茨煤矿近距离下位煤层1016工作面“留巷”在回采过程中出现的巷道顶板剧烈下沉的问题,采用理论分析和数值模拟的方法,研究了上位煤层的底板破坏深度和本煤层1016工作面回采过程中“留巷”的围岩压力,研究表明,由于两层煤间距非常小,造成下位煤层巷道围岩的自承能力低下,本煤层1016工作面回采过后,“留巷”的压力增加,当超过巷道支护强度时巷道即发生顶板弯曲下沉,最终确定采用每排U型钢棚架设两根DZ28-100型单体支柱的方式进行强化支护,控制了巷道变形。

关键词: 近距离煤层, 底板破坏, 留巷, 强化支护

Abstract: In order to solve the retainingroadway roof severe subsidence problems in the mining of HuangBaiCi mine close lower coal seam 1016 face, the paper used theoretical analysis and numerical simulation study upper seam floor failure depth and rock pressure of "left lane" in the process of 1016 face mining. The results showed that, since the distance between two layers of coal is very small, resulting in lower seam roadway self –supporting capacity was low. After 1016 face mining, the auxiliary inlet pressure increased, when it exceed the supporting intensity the roof would happen to sink. Using two DZ28-100 type single pillar to intensive support each row “U” shaped steel shed control the roadway deformation effectively.

Key words: close-distanceseams, floordamage, retainingroadway, strengthen supporting

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