中国煤层气 CHINA COALBED METHANE 关键词：瓦斯 长壁工作面 抽采 [gap=423]Keywords: Gas；longwall face；extraction
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... longwall retreating 后退式长壁开采 longwall face 长壁工祖 retreating longwall 后退式长壁开采 ...
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longwall face development 长壁工祖升采
steep longwall face 陡的长壁工祖
incline longwall face 倾斜长壁工作面
roof of longwall face 长壁工作面顶板
The mechanism of water inrush from coal floor in longwall face is simulated by the similar material tests.
利用相似材料模拟试验，模拟了采场底板突水机理。
Using hydraulic supports in heavy grade longwall face with sublevel caving, anti-topple and antiskid are the key factors.
在大倾角倾斜煤层进行综放开采，支架的防倒、防滑成为决定放顶煤开采成功与否的关键。
Serving as the key equipment for fully mechanized longwall face, hydraulic support plays a major role to the whole face 'safe production.
液压支架是综采工作面的重要设备，对整个工作面的安全生产起着至关重要的作用。
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