地下掩埋管道及其地下建筑物压覆矿产边界的确定

地下掩埋管道及其地下建筑物压覆矿产边界，是由建设工程本身抗破坏能力、工程重要性以及矿体特征、开采方式、工程与矿体的相对位置等因素决定的。对于地下矿体，按围护带宽度、上覆各岩层移动角确定压覆矿产边界；对于地表非爆破性采矿，按围护带宽度和地表岩层移动角确定压覆矿产边界；对于地表爆破性采矿，安全爆破距离一般取50m。

Determination of Pressure Mineral Boundary of Buried Pipes and Underground Buildings

The boundaries of buried pipes and underground buildings were decided by many elements, such as the capacity against the destruction by construction project itself, the importance of project, orebody characteristics, mining mode, and relative position between engineering and orebodies. As to the under ground orebodies, the pressure mineral boundary was decided by maintenance width and the movement angle of the overlying terrane. As to the surface explosive mining, the pressure mineral boundary was to take 50 meters. As to non - explosive surface mining, the pressure mineral boundary was decided by the maintenance width and surface strata movement angle.