goaf area

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1.

The alternative method to drill gas drainage holes underground is to drill boreholes from surface to the goaf area .

采用地表垂直钻孔抽放采空区内的瓦斯是瓦斯治理技术的另一选择。

2.

Discussion about consolidating the foundations on goaf area by grouting from the surface

关于地面注浆加固矿山采空区地基的探讨

3.

Geotechnical Engineering Analysis and Evaluation of Dam foundation of Ash Yard in Mine Goaf Area

煤矿采空区贮灰场坝基的岩土工程分析与评价

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4.

Application on Electrical Prospecting in Detecting Goaf Area of Coal Mine

电法勘探在煤矿采空区范围探测中的应用

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5.

Coal mining technology for mining operation between two goaf area of No. 12310 coal face in Malan Mine

马兰矿 12310 工作面在二采空区间回采技术