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(一) 现代化采煤技术的发展,对矿井地质工作提出了新的更高的要求。生产实践表明,综合机械化采煤,要求在长达1000米左右的工作面内不应出现不能通过的断层(落差不大于煤厚的1/5);煤层不应有剧烈的褶曲(曲率半径不小于30米)、变薄和冲刷(煤层厚度变化不超过10％);顶板没有较大面积的松动带;不出现大的底鼓现象等等。否则,轻则减产,重则工作面停产搬家,严重影响生产的顺利进行。根据有关资料,由于地质构造等原因,英国有些年度,曾有1/3综采工作面被迫搬家;有些年度导致年产量
(A) the development of modern coal mining technology, put forward new and higher requirements for mine geological work. Production practice shows that comprehensive mechanized coal mining, requiring up to 1,000 meters in the face should not be unable to pass (fault is not greater than 1/5 of the coal thickness); seam should not have severe folds (radius of curvature is not Less than 30 meters), thinning and scouring (the thickness of the coal seam does not change by more than 10%); there is no loosening zone with large area on the roof; Otherwise, light output reduction, heavy stop moving production, seriously affecting the smooth progress of production. According to relevant information, due to geological structure and other reasons, some 1/3 of the fully mechanized mining face in Britain was forced to move in some years; in some years annual output