CAJ | 학술논문

考虑采动矿压和煤层隔水底板下承压含水层水压的联合作用，推导出断层影响下底板突水的水压力解析式。运用试算法搜索出最危险底板剪切破裂面及临界突水水压。在此基础上，分析了工作面开切眼到断层带距离、断层倾角、工作面推进方向以及侧压力系数等因素对底板临界突水水压的影响规律。算例显示，临界突水水压随工作面开切眼到断层带距离的加大而减小；随着断层倾角的减小，临界突水水压先减小后增加，但当断层倾角小于某一临界角度时，底板不沿断层面破坏；由断层下盘向上盘推进时的临界突水水压较由断层上盘向下盘推进时大，但无论工作面的推进方向如何，临界突水水压皆随着工作面过断层带距离的加大而逐步减小；随着侧压力系数的加大，临界突水水压先增大后逐渐减小。实例应用表明，临界突水水压计算判别结果与实际情况吻合。
고필채동광압화매층격수저판하승압함수층수압적연합작용，추도출단층영향하저판돌수적수압력해석식。운용시산법수색출최위험저판전절파렬면급림계돌수수압。재차기출상，분석료공작면개절안도단층대거리、단층경각、공작면추진방향이급측압력계수등인소대저판림계돌수수압적영향규률。산례현시，림계돌수수압수공작면개절안도단층대거리적가대이감소；수착단층경각적감소，림계돌수수압선감소후증가，단당단층경각소우모일림계각도시，저판불연단층면파배；유단층하반향상반추진시적림계돌수수압교유단층상반향하반추진시대，단무론공작면적추진방향여하，림계돌수수압개수착공작면과단층대거리적가대이축보감소；수착측압력계수적가대，림계돌수수압선증대후축점감소。실례응용표명，림계돌수수압계산판별결과여실제정황문합。
Considering the combined effect of mine pressure and water pressure of confined aquifer under the water-resisting floor, water pressure expression of floor water inrush has been derived. And then the most dangerous shear fracture plane and the critical pressure of water inrush have been ob-tained by trial calculation. Based on the proposed analytical solutions, the effect law of distance between cut-hole and fault zone, fault dip, advancing direction of face and lateral pressure coefficient on critical pressure of water inrush have been analyzed. The results show that the critical pressure of water inrush decreases gradually with the increase of distance between cut-hole and fault zone. With the decrease of fault dip, the critical pressure of water inrush decreases firstly, and then increases gradually. However, floor failure is not along the fault surface any more when the fault dip is less than a certain critical angle. When the working face advances from the lower wall of fault to the upper, the critical pressure of water inrush is higher than the opposite, namely the working face advances from the upper of fault to the low-er. But no matter in what direction the working face advances, the critical pressure is reducing with the increase of distance from working face to the fault zone gradually. The critical pressure of water inrush increases first and then decreases with the increase of lateral pressure coefficient. The application de-monstrates that the calculation results of the critical pressure accord with the actual situation.