联合支护技术在软岩段巷道中的应用

Union support technology applied in the soft rock tunnel

笔者针对花园煤矿开拓巷道中遇到的软岩具有松散破碎、高饱和吸水性、强膨胀性及流变性等的特点,分析研究了放炮震动导致的围岩结构变化,从而在现场施工中采用了多种比较实用的联合支护方式,保证了工程支护质量和施工安全,特别是在轨道大巷应用施工中取得了良好的支护效果,为成功的解决此类巷道的支护难题提供了借鉴经验。

According to the characteristics of soft rock with the loose and broken rock, the high saturated hygroscopicity, the strong expansibility and rheological behavior, etc. in developing entry of Huayuan coal mine, the authors analyzed and studied the structural changes of wall rock caused by the blasting shocks, thus many kinds of practical union supports are adopted in field construction to guarantee the project supports quality and the construction security, especially in main rail tunnel. The experiments prove that this method is a perfect solution to the roof support problem.