It is a new practical method to predict outburst danger according to gas emission law after shotfiring at coal heading faces.
根据煤巷掘进工作面放炮后的瓦斯涌出规律，预测工作面的突出危险性是一种新型实用的工作方法。
An old steam engine went slowly by, heading northeast, puffing great clouds of smoke and hauling a train of coal trucks.
一辆老式蒸汽机车喷着浓烟，拖着一节又一节的煤车缓慢地向东北方向开去。
Advancing hole is one of local prevent outburst measure at coal road heading face in coal-and-gas outburst mine.
超前钻孔是煤与瓦斯突出矿井中煤巷掘进工作面的局部防突措施之一。
Under gassy coal seam condition, the full-heading development is employed. Because of the fast heading a high rate of gas emission arises.
在瓦斯含量较大的煤层采用综掘掘进巷道，由于掘进速度快，出现了瓦斯涌出量过大的现象。
It has tnade a good results to use the techniques on the shearers and in the heading faces in coal underground.
并将此技术用于煤矿井下采煤机和炮掘工作面，取得了很好的降尘效果。
Mine ventilation frequency wet dust removal system for the heading face of coal mine dust in air.
矿用通风湿式变频除尘系统，用于对煤矿井下掘进工作面的空气进行除尘。
Roadway heading is the forerunner for clearly knowing coal bed geological conditions.
掘进巷道是全面、准确了解矿井煤层地质条件的先导。
Roadway heading is the forerunner for clearly knowing coal bed geological conditions.
掘进巷道是全面、准确了解矿井煤层地质条件的先导。
应用推荐