大断面软岩巷道支护技术浅析

Analysis of Support Technology at Large-bore Roadway with Soft Rock

煤矿的软岩多是复合的膨胀岩,以泥岩、粘土岩等多见,具有易风化、怕水和震动等特征,遇水后具有较大的膨胀性、流变性,稳定性极差。本文主要讲述了大断面软岩巷道支护形式与参数;在试验的基础上,利用"新奥"理论解决了软岩大断面巷道的支护问题,摸索出了一定的经验,为类似地质条件下的巷道施工提供了宝贵的经验。

It is known that the soft rock in collieries is usually compound dilational rock, especially mudstone and clay rock, which is characteristic of high dilatability and rheidity and low stability. The paper focuses on the support forms and related parameters of a large --bore roadway with soft rock, and elaborates the application of the theory of New Austrian Tunnelling Methods to soloving the suport problems of large-- bore roadway with softrock, which will provide valuable experiences for the construction of roadway with similar geological conditions.