三、线路日常维修的特点铁路下采煤能引起线路状态不良,其中有些不良情况在不受开采影响的一般线路上也能见到。查明种种不良情况的性质,以及对不良情况发生的原因和过程有正确的概念,这对铁路采动地段的养路工有很大帮助。它能使养路工在组织线路修理工作中人力、物力消耗最小,列车正常 Third, the line of routine maintenance features Coal mining under the railway line can cause bad conditions, some of which are not affected by mining in the general line can also be seen. Identifying the nature of the adverse conditions and the correct concept of the causes and processes of the occurrence of the adverse conditions is of great help to the road maintenance workers in the railway mining section. It enables maintenance workers in the organization of line repair work in the human, material consumption minimum, the train is normal