离层水突水模式与离层破断距

近几年,离层积水引发的突水事故较多,离层水害的发生往往难以预判,因此需要针对离层突水开展深入的研究,提出离层突水主要有3种模式,离层动水压突水、静水压突水以及重复扰动突水,并针对离层动水压突水,研究了离层的破断距,得出了其计算公式.利用模拟实验研究和实测资料,对离层发育规律和离层破断距进行了研究,并指出离层水害防治,重点在于预计离层发育位置,在正确预计离层发育位置基础上,可超前施工疏导钻孔,防止离层水害.

Water inrush model and broken distance of stratum separation

Recently years,many water hazards caused by burst of water cells formed by overburden stratum separation, water hazards is often difficult to predict, so need study it three kinds of patterns were provided, they were hydrodynamic water inrush, hydrostatic water inrush, and repetitive disturbance water inrush, respectively, aimed at hydrodynamic water inrush, the separation of the broken distance was studied, the calculation formula was derrived. By the simulation and the measured data, the development regularity of strata separation and broken distance were studied on, and it pointed out that water hazards caused by burst of water cells formed by overburden stratum separation prevention, focus on the development in the correct position was expected to separation, separation and development based on the expected location, advanced drilling construction guidance, to prevent water hazards caused by burst of water cells formed by overburden stratum separation.