通过对该铜矿区形成的数处露天采坑的调查，分析其对地下开采造成的影响，并提出灾害防治的对策。
Through the investigation on various copper mining pits, impacts on the underground mining are analyzed, and some recommendations of disaster prevention were proposed.
利用现有的露天采坑，合理调整采剥部位，创造条件实现内部排土，延长了姑山铁矿露天采场的服务年限。
Using the existing open pit, the stripping and mining site is rationally adjusted, and conditions are created for realizing the inner dump and extending the open pit service life of Gushan Iron Mine.
近年来，关于矿山采坑废弃土地的生态环境受到了广泛的关注，而其中土壤动物的种类和数量问题却没有得到应有的重视。
In recent years, the ecological environment of the abandoned pit land in mines has aroused wide attention while the quantity and varieties of the soil animals (haven't) received due attention.
这片昔日的农田在1964年前是被用作采砾坑的。
This area of former farmland was worked as a gravel pit until 1964.
随着白云铁矿采场的向下延伸，边帮暴露面积加大，爆破地震对边坡及近坑建筑物的影响日趋严重。
With the downward extend of Baiyun main mine and increase of boundary expose area, the effect of blasting earthquake on slope and nearby buildings is increasing.
近期浅部坑采试选表明，勘探期间所定陶湾磷矿选矿指标是合理、可行的。
Experimentally dressing the ores from the upper levels of underground mining indicates that the decided indexes during the exploring period is rational and feasible.
近期浅部坑采试选表明，勘探期间所定陶湾磷矿选矿指标是合理、可行的。
Experimentally dressing the ores from the upper levels of underground mining indicates that the decided indexes during the exploring period is rational and feasible.
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