10-205工作面开采矿压规律分析与强制放顶技术应用

Analysis of Mining Pressure Law and Application of Forced Roof Caving Technology in the 10-205 Working Face

为避免坚硬顶板大面积悬顶诱发动力灾害,以锦程矿10-205工作面赋存K2石灰岩坚硬顶板为工程背景,分析了工作面开采矿压显现规律,工作面初次来压步距约45 m。分析认为工作面顶板岩层需进行弱化处理,设计采用深孔松动爆破的方式对10-205工作面坚硬顶板进行强制放顶,工作面初次来压步距显著减小。

In order to avoid the dynamic disaster induced by large area hanging of hard roof,taking the hard roof of K2 limestone in the 10-205 working face of Jincheng Coal Mine as the engineering background,the mining pressure behavior law of the working face is analyzed,and the initial pressure step distance of the working face is about 45 m.The analysis shows that the roof strata of the working face need to be weakened,and the design adopts the way of deep-hole loose blasting to force the hard roof of the 10-205 working face.The step distance of the first pressure in the working face is significantly reduced.