All of these provide a basically technological support to the determination of safety coal-rock pillar types and the reasonable height of coal-rock pillar to avoid groundwater rush during first level mining.
英
美
- 經(jīng)數值模擬計算的結果和沉積相與富水性之間的關(guān)系的綜合分析，將區內“四含”分為強富水區、中等富水區和弱富水區三種類(lèi)型，為煤礦一階段水平開(kāi)采前對于確定煤巖柱類(lèi)型和留設合理的煤巖柱高度提供了技術(shù)支撐。
