Synchronous forming of underground warehouse and concrete wall is a new method of constructing every sort of underground warehouses in soil.
同步成型地下仓及砼仓壁是在土中建造各种类型地下仓的一种新方法。
The electricity character of karst cave has much difference than that of wall rock, so the surveying method of direct current can find out if there be karst cave underground.
由于地下岩溶与周围围岩存在明显的电性差异，可以通过直流电法勘探查明地下是否存在岩溶形态。
This method is suitable for underground oil storage tanks and other material storages with off-wall or on-wall concrete lining, especially for underground storages which have severe leakage.
凡采用混凝土做离壁或贴壁被覆的地下储油库及物资储备库均适用。尤其是对渗漏严重的地下储库，其效果更佳。
The invention relates to a wall rock support method for an extremely strong or a strong or a moderate rock burst tunnel section that is deeply buried in an underground chamber.
本发明涉及一种深埋地下洞室极强或强或中等岩爆洞段的围岩支护方法。
The hanging wall ore of the open-pit is one of important projects in transition from open pit to underground in Daye iron mine, and the shallow hole shrinkage mining method is adopted in the project.
大冶铁矿露天采场挂帮矿是该矿山露天转地下项目的重要工程，采用浅孔留矿法进行开采。
The hanging wall ore of the open-pit is one of important projects in transition from open pit to underground in Daye iron mine, and the shallow hole shrinkage mining method is adopted in the project.
大冶铁矿露天采场挂帮矿是该矿山露天转地下项目的重要工程，采用浅孔留矿法进行开采。
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