【摘要】 在高地压"三软"煤层中,沿采空区边缘,合理留设区段煤柱与布置回风巷,降低因矿压影响对回风巷道的 破坏,减少修护量,提高安全和经济效益。更多还原

【Abstract】 This paper presents how to locate coal pillars and design the return ainvajs in "three soft"coal seam with high pressure along the goaf so as to avoid the pressure damage to return airways, reduce the repair araount and lift mining safe and economic benefit.更多还原