Karst collapse colum in North China already becomes one of the main geological disaster in mine mining.
华北地区岩溶陷落柱已成为矿井开采中最主要的地质灾害之一。
Optimizing roadway arrangement way unceasingly, reducing the tunnel drivage ratio is an important task in the mine mining design process.
不断优化巷道布置方式，降低巷道掘进率，是矿井开采设计过程中的一项非常重要任务。
The status of Panji No. 2 coal Mine mining area layout and problems of the coal and gas outburst are analyzed. The stope adjustment programs are pointed out.
分析了潘二煤矿采区布局现状及防突的难题，提出了采场调整的方案。
The status of Panji No. 2 coal Mine mining area layout and problems of the coal and gas outburst are analyzed. The stope adjustment programs are pointed out.
分析了潘二煤矿采区布局现状及防突的难题，提出了采场调整的方案。
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