长壁综采放顶煤采煤方法
longwall fully mechanized overhead caving coal mining
大采高综采放顶煤技术
fully mechanized high cutting and top coal caving mining technology
大倾角综采放顶煤
the steep-grade angle and top coal mining
短长壁综采放顶煤
shorter long-wall full-mechanized caving mining
炮采放顶煤
artillery mining coal
blasting coal caving face by blasting
caving-working-face
炮采放顶煤工作面
blasting coal face with sublevel caving
轻型综采放顶煤
light supported fully mechanized caving
Top-coal caving with light support
巷柱－综采放顶煤
combin gateway and pillar with fully mechanized to
综采放顶煤
fully mechanized sublevel caving mining
fully-mechanized mining with top coal caving
fully-mechanized top coal caving
Long-wall Top Coal Caving
fully mechanized caving mining
sub-level caving mining
Fully-mechanized Coal Caving
fully-mechanized mining with sublevel caving
sub-level caving
fully mechanized top cawing mining
Full-mechanized Caving Mining
Fully-mechanized Mining with Roof Caving
Fully-mechanized Top-coal Caving Mining
fully-mechanized caving method
top-coal caving mining
fully mechanized top coal caving mining
fully mechanized coal drawing
Fully-caving
fully mechanized caving
fully mechanized roof-caving face
mechanized top-coal caving
综采放顶煤工作面
fully mechanized top coal caving face
顶煤放出率
top coals′ recovery ratio
放顶煤
Sublevel caving
longwall face with sublevel caving
coal caving mining
caving top coal
caving coal
coal caving
Top-coal Caving
top-coal caving mining
carry out the head coal
top-coal drawing
caving
top coal caving
blasting down coal
放顶煤综采
fully mechanized caving coal