高突 meaning in Chinese

abnormal protrusion

Gas control in outburst thick seam face with caving mining
高突厚煤层放顶煤工作面瓦斯治理
Comprehensive gas control in heading face at crosscut in high outburst mine
高突矿井石门掘进工作面的瓦斯综合治理技术
The gas drainage technique with short boreholes in stress reduced area for mining face with outburst hazard
高突工作面卸压区浅孔抽放技术
Gas outburst prevention technology in high gassy gateway heading face of quot; three soft quot; instability coal seam
不稳定煤层高突区域掘进工作面瓦斯综合治理
The construction methods and caving protection measures for punching high thick and loosen soft coal seam in luling coal mine no . 2 dark tilt well in huaibei coal mine area are introducded . they include small section enlarged after the heading caving , high negative pressure and multi - raw drilling holes and strenous drawing - off , concentrated cross drill holes , cutting while drawing - off and putting the metal frame away
介绍了淮北矿区芦岭煤矿2主暗斜井采用小断面导硐后刷大、高负压多排钻强抽，密集交叉钻孔边掘边抽及设置金属骨架施工方法和防突措施揭穿高突特厚松软煤层。