高瓦斯矿井抽采方式的选择研判

Study and judgment on the selection of the drainage method in high gas mine

顺层钻孔递进掩护采前抽采法钻孔布置方法:从上区段工作面机巷向邻近工作面煤层施工顺层长钻孔,预抽钻孔控制范围内的瓦斯;消除钻孔控制区域的突出危险性后,在留有10~15m预抽超前距的前提下施工工作面腰巷;然后在腰巷中继续向工作面下部煤体施工顺层长钻孔,消除钻孔控制区域的突出危险性后,在留有10~15m预抽超前距的前提下施工工作面机巷;风巷、切眼均处于预抽范围内,可直接施工。

Picks front along the level drill hole progressive shield pulls out picks the law drill hole arrangement method:To is close to the working surface coal bed construction from on sector working surface machine lane along the level long drill hole,pulls out in the drill hole control area in advance the gas;After the elimination drill hole controlled area prominent risk,in leaves leeway under the premise which 10~15m pulls out in advance is apart from in advance to construct the working surface waist lane;Then continues in the waist lane to the working surface lower part the coal body construction along the level long drill hole,after eliminates the drill hole controlled area the prominent risk,in leaves leeway under the premise which 10~15m pulls out in advance is apart from in advance to construct the working surface machine lane;The wind lane,cuts the eye to be in pulls out in advance the scope,may construct directly。