On the physical exploration results, the range of the abandoned workings have been determined.
据物理勘探的结果，确定了采空区的范围，分析了大桥荷载对采空区煤柱的影响。
The rapid increase of industrial wastes and their disposal have caused serious contamination of ecological environment. In the meantime, there are a lot of abandoned underground workings in mines.
工业废弃物大量排放造成生态环境的严重破坏，而各类矿山开采过程中遗留下大量的报废空间。
The rapid increase of industrial wastes and their disposal have caused serious contamination of ecological environment. In the meantime, there are a lot of abandoned underground workings in mines.
工业废弃物大量排放造成生态环境的严重破坏，而各类矿山开采过程中遗留下大量的报废空间。
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