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以Л.И鲁图金娜命名的联合企业《托勒耶兹安托拉吹特》矿业开采 n_7和 n_8煤层的无烟煤。n_8煤层的厚度为0.8～1.3m,有一层不稳定的伪顶。为保证液压支架能在煤层厚度小于1.1m 时能可靠的工作,因而必须沿着岩石顶板0.1～0.25m 给予整体破坏,并在更大程度上促使其顶板冒落,但是增加了原煤灰分。在底板掏槽是不可能的,因为底板岩石硬度高。以东翼19号回采工作面的开采为例,工作面长度190m,其走向为900m。在此范围内的煤层厚度为0.85～0.95m,倾角3～5°。开采深度为600m。直接顶不稳定,由含裂隙的并带有滑动面的泥页岩所组成(厚度
The coalition named “Torres Antsolachite” named after Л.И Lutuchenna mined anthracite coal at n7 and n8. The thickness of the n_8 coal seam is 0.8 ~ 1.3m, with a layer of unstable top. In order to ensure that the hydraulic support can work reliably when the thickness of coal seam is less than 1.1m, it is necessary to give overall damage along the top 0.1-0.25m of the rock roof and promote its roof to fall to a greater extent, but increase the ash content of raw coal. Notching in the floor is not possible because of the high hardness of the floor rock. Taking the mining of the No. 19 mining face in East Wing as an example, the working face length is 190m and its direction is 900m. The coal seam thickness in this range is 0.85 ~ 0.95m, dip angle 3 ~ 5 °. Mining depth of 600m. Directly top instability, composed of cracked shale with slip surface (thickness