巨厚坚硬顶板条件下综采强制放顶技术实践

Fully Mechanized Forced Mining Technology Practice under Thick Hard Roof Caving

针对下组煤巨厚火成岩顶板管理难题,采用深孔爆破强制放顶技术,进行步距放顶,人为改变火成岩顶板自然跨落规律,避免了采空区顶板大面积跨落,改善了工作面安全生产状况。

According to the thick coal for lower series coal of igneous roof management problems,the use of deep-hole blasting caving technology for caving step artificially altered the natural cross off the roof igneous law,avoiding the mined-out area across a large area off the roof,improving the working face safety situation.