特别破碎测压围岩环境改造工艺技术研究

Study on particular broken rock manometry of environmental reform process technology

由于静水压力和流动阻力的存在,浆液在围岩裂隙中的渗透扩散范围有限,对于具有较厚特别破碎围岩的石门测压环境来说,一次注浆难以达到预期效果,因此本文提出采用逐段注浆法来实现封堵、充填导水围岩裂隙,增强围岩的承载能力,防止塌孔,一次成孔,为石门测压提供一个良好的围岩环境。并通过在平煤十一矿-800m石门测压试验与应用的顺利进行,论证了逐段注浆法改变特别破碎围岩测压环境的可行性。

Once grouting is difficult to achieve the expected result under the crosscut manometry circumstances with thicker particular broken surrounding rock,which is limited by the scope of slurry permeating into surrounding rock due to the existences of hydrostatic pressure and flow resistance.In this paper,sectional grouting was adopted to seal and fill in crevices of hydraulic conductivity surrounding rock to enlarge the carrying capacity of surrounding rock,which provided a better surrounding rock environment.Meanwhile,the feasibility of sectional grouting to improve the special broken surrounding rock manometry environment was proved by the successful experiment and application under 800m in Pingdingshan Coal Group Corporation No.11 coal mine.