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兖州矿务局经过两年多的努力,终于实现了对含硬夹矸薄煤层采用爆破落煤机械装煤的生产工艺。19818年1月27日至28日在兖州矿务局由山东煤炭局主持通过了对该生产工艺的技术评定。兖州矿区主要可采煤层中有两层煤平均厚度均为1m左右,赋存稳定,顶板条件较好,储量约24亿吨,占全区总储量的40％左右。但由于煤层中含有硫化铁和碳质砂岩,所以,至今采煤工艺仍为打眼放炮、人工装煤和支回柱。因此,对含矸薄煤层如何实现
After more than two years of hard work, Yanzhou Mining Bureau finally realized the production process of using the blasting coal to remove coal from the coal seam with the thin coal seam containing the hard scrap. January 27, 19818 January 28 to 28 in Yanzhou Mining Bureau presided over by the Shandong Coal Bureau passed the technical assessment of the production process. The average thickness of two layers of coal in the main recoverable coal seam of Yanzhou Mining Area is about 1m, with stable occurrence and good roof conditions, with a reserve of about 2.4 billion tons, accounting for about 40% of the total reserves in the region. However, due to the coal seam containing iron sulfide and carbonaceous sandstone, so far the mining process is still shot blasting, artificial coal charging and column back. Therefore, the thin coal seam containing how to achieve