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通过两个相互连通但体积不等、形状不同的洞穴按不同体积比和不同连通通道宽度的系列示踪实验,得到了连通双岩溶洞穴的强迫流示踪曲线模型,并提出了洞穴体积计算方法.分别在大、小洞穴中所获得的强迫流示踪曲线,其浓度达到稳定前的最后浓度变化段,前者长度短,坡度缓,后者长度长,坡度陡.当钻孔揭露与大洞穴连通的小洞穴时,可通过强迫流示踪曲线识别连通双岩溶洞穴与封闭孤立洞穴;连通双岩溶洞穴总体积计算的相对误差很小,说明所提出的总体积计算方法是可行的.但只有当钻孔揭露与大洞穴连通的小洞穴时,才可以通过示踪曲线单独计算各洞穴的体积.
By means of a series of tracing experiments with two interconnected but different volumes and different shapes of caves at different volume ratios and different widths of connecting channels, a forced flow tracing curve model was established and the calculating method of cave volume . The forced flow tracing curves obtained in large and small caves, respectively, reach the final concentration change section before stabilization, with the former being short in length and the latter being steeper in slope and steeper in slope, When connecting small caves, the relative flux between the two caves and the isolated caves can be identified through the forced flow tracing curve. The relative error of the total volume of connected caves is very small, indicating that the proposed total volume calculation method is feasible. However, When a hole exposes a small cave that communicates with a large cave, the volume of each cave can be calculated separately by the tracer curve.