mining effect meaning in English

地下爆炸效力
水电爆炸效力

Superficial view on workability and mining effect of no . 8 coal seam , 6th district , qianjiaying mine , kailuan
浅谈开滦钱家营矿六采区8煤层可采性及其开采效益
The following new opinions : without caving zone coal layer extraction in efflorescent oxygenized belts ; two effects of blocking water and preventing water flowing fractured zone from going on developing after mining effect ; appropriately enlarging the extraction thickness were presented
提出了风氧化带煤层开采无垮落带；受采动影响后，具阻水和抑制导水裂隙带继续发展的双重作用以及适当加大开采厚度等新观点。