近距离煤层开采下软弱煤层巷道围岩控制技术研究

Study on Surrounding Rock Control Technology of Roadway in Weak Coal Seam Under Close Coal Seam Mining

近距离煤层开采过程中可能会遇到硬度较低的煤体,而且受地应力及采动影响,导致煤岩体发生破碎,这会增加煤矿开采过程中,巷道支护难度。为此,以某矿21604工作面所在的软弱煤层巷道为例,详细分析其围岩控制技术方案,及其支护效果。

Coal with low hardness may be encountered in the process of short-range coal mining, and due to the influence of in-situ stress and mining, the coal and rock mass will be broken, which will increase the difficulty of roadway support in the process of coal mining.Therefore, taking the soft coal roadway of 21604 working face of a mine as an example, the technical scheme of surrounding rock control and its supporting effect are analyzed in detail.