三河尖-980m车场巷道破坏机理与控制技术研究

2018-01-23 08:57:48胡占海
价值工程 2018年34期

胡占海

摘要:随着煤炭开采越来越向深部发展,巷道围岩压力愈来愈大,矿井全断面来压巷道的支护与维护问题显得越来越突出。本文结合三河尖矿-980m车场巷道具体地质情况,重点应用了理论分析、现场实践以及矿压观测方法,系统的论述此类巷道围岩的特征,软岩巷道破坏的特点,围岩变形的影响因素,来压巷道的支护原则及其巷道的维护方法等。针对此类巷道典型特征制定常规深井软岩巷道支护施工工艺,并因地制宜地运用到三河尖矿-980m车场巷道上来。

Abstract: With the development of coal mining deeper and deeper, the surrounding rock pressure of the roadway is getting bigger and bigger, and the support and maintenance of the full-section pressure roadway in the mine is becoming more and more prominent. In this paper, combined with the specific geological conditions of the roadway of Sanhejian Mine-980m yard, the theoretical analysis, field practice and mine pressure observation method are applied. The characteristics of such roadway surrounding rock, the characteristics of soft rock roadway failure, the influencing factors of surrounding rock deformation, the support principle of the pressure roadway and the maintenance method of the roadway are discussed systematically. According to the typical characteristics of such roadway, the construction technology of conventional deep soft rock roadway support is established, and it is applied to the Sanhejian Mine-980m yard roadway according to local conditions.

關键词:岩巷;全断面来压;支护工艺

Key words: rock roadway;full section pressure;support technology

中图分类号:TD353                                      文献标识码:A                                  文章编号:1006-4311(2018)34-0187-03

1  绪论

对地下矿山开采而言,保证巷道开挖和支护稳定是矿山安全高效生产的前提。近年来,随着矿井开采深度的增加,地压越来越大、巷道变形急剧加大、巷道底臌及片帮严重,支护难度增加,严重危害巷道围岩的稳定性和巷道维护,制约深部开采。

徐州矿务集团三河尖煤矿在面临这类问题时从巷道变形的机理入手,制定了一套完善的加固修复方案来对其进行综合治理。巷道施工完毕后,受采动压力、水等影响,局部巷道变形、破坏严重,底鼓剧烈,巷道处于不稳定状态中,严重影响了矿井的生产。因此,分析研究这类巷道的变形破坏机理,改善围岩的受力状态,提出合理可行的支护控制技术,使巷道达到最佳支护水平,在保证巷道正常运行的同时,为矿山安全生产,提高矿井经济效益,实现矿井高产高效具有重要的理论意义和实践价值。……

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