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计算坑道涌水量的方法很多,但被广泛应用的只有地下水动力学方法和水文地质比拟法。应用地下水动力学方法,必须先通过试验,求出含水层渗透系数,再用地下水动力学公式计算。由于试骏时间短、降深小、试验孔径小等原因,使试验具有局限性;还由于所用公式中规定的严格的假定条件,实际情况,往往很难符合,致使计算结果不准确。应用比拟法需要有与欲计算坑道相似的水文地质条件下的排水资料。这个方法是近似的,它简便、容易和经济。但已有的公式大都是先假定含水层的渗透系数均一,再由地下水动力学公式导出来的。在应用
There are many ways to calculate the amount of water in the tunnel, but only groundwater hydrodynamics and hydrogeology are widely used. The groundwater hydrodynamics method, we must first through the test, find the aquifer permeability coefficient, and then calculate the groundwater dynamics formula. Due to the short time of trial run, small decrease of depth, small test aperture and other reasons, the test has limitations. Because of the strict assumptions and formulas used in the formulas, it is often difficult to meet the test results, resulting in inaccurate calculation results. The application comparison method requires drainage data similar to the hydrogeological conditions to be calculated for the tunnel. This method is approximate, it is simple, easy and economical. However, most of the existing formulas assume that the permeability coefficient of the aquifer is uniform and then derived from the groundwater kinetic formula. In use