松软破碎煤岩体中巷道支护探讨

Investigate of the Roadway Supporting in Soft and Broken surrounding Rock

我国软岩地区矿井分布广泛,随着矿井开采深度的增加,地质条件逐渐复杂,地应力加大,井下巷道处于较高的地应力环境中,岩石的力学性质发生了变化,给煤矿巷道支护及稳定性带来了很大的难度,具体表现为强烈的底鼓、两帮移近量较大和顶板下沉剧烈。在分析巷道支护所要遵循原则的基础上,结合某矿瓦斯排放专用上山巷巷道支护工程实践,采用锚网索支护、开切卸压槽联合技术很好地控制了软煤层巷道的稳定,此项研究成果为解决软煤层巷道支护问题提供了借鉴经验。

Mines with soft rock are widely distributed in China, with the increasing depth of mining, the stress increasing, coupled with the complicated geological conditions, roadway will be in a high stress environment underground, the mechanical properties of rock are changed, bringing great difficulties for mines to support roadways. The support in soft rock roadway is becoming a serious problem, particularly for the strong performance of the bottom drum, side-to-side moving and roof falling sharply, based on the principle of supporting and combination of one mine gas emissions special mountain tunnel supporting engineering practice, the bolt-mesh-anchor support, cutting the pressure relieving troughs joint technical ,having a good control of soft coal seam roadway stability, this research provides a reference experience to solve the soft coal seam roadway.