研究建筑物下、铁路下和水体下采煤的目的:就是既要保护建筑物不受损害,又能尽量多的采出煤。这就要求在地下开采过程中,对所在矿区的地质资料,地表移动的规律,进行深入细致的研究,制定出切实有效的防止措施,完成开采的全过程。 To study the purpose of coal mining under buildings, under railways and under water: that is, it is necessary to protect buildings from being harmed and to extract as much coal as possible. This requires that in the process of underground mining, the geological data of the mining area in which they are located and the law of surface movement should be studied thoroughly and intensively, and effective prevention measures should be worked out to complete the whole process of mining.