It has some real meaning for stress calculating and fractures zone forecasting on shaft wall in drainage settlement coal field.
该模型的建立将对疏水沉降矿区井壁的受力计算和井壁破裂预测具有现实的意义。
2
Gass lift drainage gas recovery by gas lift valve, from the ground to high-pressure gas injection stop injection Wells, the gas energy gradually lift shaft in the liquid, the well production capacity.