煤矿薄基岩条件下巷道掘进工艺分析

Analysis of roadway excavation technology under the condition of thin bedrock in coal mine

随着大柳塔煤矿对52煤、22煤煤层的深度回采,在开拓巷道、准备巷道的掘进过程中常遇到顶板基岩变薄,造成支护困难、淋水大、巷道成型差等难题,严重影响掘进安全及掘进效率,如何选择一套较好的掘进工艺,实现高效、安全掘进是现阶段采矿学者需解决的技术难题之一。以大柳塔煤矿22316工作面运顺、回风措施巷掘进为例,介绍了薄基岩条件下支护、循环、人员组织3方面改优化策略,为同样条件下其他巷道安全、高效生产提供借鉴意义。

With the deep mining of the 52 and 22 coal seams in Daliuta coal mine,the roof bedrock is often thinned in the process of developing and preparing the roadway,resulting in difficulties in support,large water pouring,poor roadway formation and other problems,which seriously affect the driving safety and driving efficiency.How to choose a better driving process to achieve efficient and safe driving is one of the technical problems that mining scholars need to solve at this stage.Taking the roadway driving of haulage and return air measures in 22316 working face of Daliuta coal mine as an example,the change and optimization of support,circulation and personnel organization under the condition of thin bedrock were introduced in detail,which provided reference for the safe and efficient production of other roadways under the same conditions.