特厚煤层软岩巷道支护技术研究

刘进晓1,2，景继东2，赵国会1，尚玉强2，刘伟韬1

(1.山东科技大学 矿山灾害预防控制教育部重点实验室，山东 青岛 266590；

2.新汶矿业集团(伊犁)能源开发有限责任公司，新疆 伊犁 835000)

[摘要]基于新疆伊犁一矿3煤层为特厚煤层及顶底板强度低、胶结性差、易崩解、遇水易软化的工程实况，分析了伊犁一矿马头门两侧巷道围岩的变形破坏特征，得出伊犁一矿软岩巷道围岩失稳机制，指出原有支护系统护表和主动支护强度低、地应力大是导致巷道破坏和支护失效的主要原因。提出了副立井马头门两侧巷道采用“强护表+锚网索+架棚”联合支护技术方案。现场监测结果表明：该支护技术基本能够避免软岩巷道的多次翻修，实现支护一次到位。

[关键词]特厚煤层；软岩；联合支护；副立井；马头门

[中图分类号]TD353[文献标识码]A

[收稿日期]2014-06-27

DOI[]10.13532/j.cnki.cn11-3677/td.2015.01.020

[基金项目]山东省优秀中青年科学家科研奖励基金资助项目(BS2011SF016)

[作者简介]刘进晓(1977-)，男，山东青岛人，博士，主要从事软岩支护及充填开采等方面的研究与教学工作。

Supporting Technology of Soft Rock Roadway in Extremely-thick Coal-seam

LIU Jin-xiao1,2, JING Ji-dong2, ZHAO Guo-hui1, SHANG Yu-qiang2, LIU Wei-tao1

(1.Education Ministry's Key Laboratory Mine Disaster Prevention and Control, Shandong University of Science & Technology, Qingdao 266590, China;

2.Yili Energy Development Co., Ltd., Xinwen Mining Group, Yili 835000, China)

Abstract:Coal and its roof and floor in 3rd coal-seam of Yili 1st Mine has low strength and bad cementing property and is liable to disintegration and soften.By analyzing deformation and failure characteristic of roadway surrounding rock at two sides of ingate, surrounding rock instability mechanism was obtained.It was indicated that low active supporting strength of former supporting system and large geo-stress were main cause of roadway failure and supporting invalidation.Applying combined supporting of“strong protecting surface+anchored mesh and cable+shed”for roadways of two sides of auxiliary shaft ingate was put forward.On-the-spot observation showed that this supporting technology could avoid multi-time rebuilding of soft roadway and realize one-time supporting.

Keywords:extremely-thick coal-seam; soft rock; combined supporting; auxiliary shaft; ingate

[引用格式]刘进晓，景继东，赵国会，等.特厚煤层软岩巷道支护技术研究[J].煤矿开采，2015，20(1)：68-70，11.

随着煤炭资源开采，东部煤炭资源越来越少，伴随着西北部大开发战略的实施，西部煤炭资源的开采被提上日程。由于西北部地区地质条件不同于东部地区，在煤炭开采中经常遇到强度低、胶结差、易风化、遇水崩解的软岩。导致巷道支护采用传统施工方法不能有效维持长期稳定，严重威胁矿井的生产进度和安全[1-5]。……