rock layer movement  岩层移动

broken-rock pressure  松动压力

calculating of surrounding rock pressure  围压计算

character of the falling rock movement  落石运动特征

coal and rock movement  煤岩移动

Crushed Rock Layer  碎石层

essential rule of coal and rock movement due to mining  开采岩移基本规律

Fractured-rock layer thickness  碎石层厚度

hard rock layer  钻探工艺

high pressure rock  岩石

landslide parallel to rock layer  顺层滑坡

LAW OF ROCK PRESSURE  矿压显现规律

layer rock  层状; 层状岩体; 层状岩石

major source rock layer  主力烃源岩层

mass strength [soil or rock layer]  岩土层强度

multi layer rock salt ore  多层岩盐矿

obliquity of rock layer  岩层

overburden rock movement  覆岩移动

red layer rock  红层岩石