Deep-hole directional static cracking technique for pressure relief and permeability improvement in mining-coal bed

作者：Zhang Chao^*; Lin Bai Quan; Zhou Yan; Zhai Cheng; Zhou Chao; Sun Xin

来源：Journal of Mining & Safety Engineering, 2013, 30(4): 600-604.

• Anti-reflection effects
• Coal seams
• Depressurizations
• Gas drainage
• Gas extractions
• Permeability improvements
• Pressure relief
• Wuyang coal mines

In this paper, to improve the gas extraction efficiency of soft coal seam with high gas content and low air permeability, combining with proper borehole layout, we have developed a static creaking technique to fracture coal mass and improve seam permeability, and applied to the practice in No.7601 Driving Face of Wuyang Coal Mine. The practice results show that the deep-hole directional static cracking technique has higher depressurization and antireflection effect than that of common ways, which will provide reli-able technical guarantee for high efficient gas extraction in soft coal seams with high gas and low air permeability.

• 出版日期2013
• 单位中国矿业大学（北京）