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研制了光滑岩溶管道和裂隙交叉的水力特性室内试验模型。采用正交试验设计方法安排试验,测得了48组岩溶管道和裂隙不同交叉、不同水力情况下的渗流水力特性数据。采用正交统计分析法分析绘制试验因子关系曲线图,详细研究裂隙宽度、岩溶管道直径及进水水头对试验成果的影响。定量分析了岩溶管道与裂隙交叉时其折算渗透系数与长度、直径等因素之间的关系,并在量纲分析的基础上,采用变结构遗传算法建立了计算岩溶管道和裂隙交叉时管道汇流量的数学表达式。最后将计算值与试验值对比,结果表明,所建立的公式能较好地反映影响管道汇流量各因素之间的内在联系。
A hydraulic experimental model of interlacing smooth karst pipes and fractures was developed. Orthogonal experimental design method was used to arrange the test. 48 groups of karst pipe and crevice cross-flow hydraulic data were obtained under different hydraulic conditions. Using orthogonal statistical analysis method to draw the relationship curve of the experimental factors, the influence of the crack width, the diameter of the karst pipe and the water head on the test results were studied in detail. Based on the dimensional analysis, the variable structure genetic algorithm is used to establish the calculation method of the pipe confluence when the karst pipe and the fracture cross each other Mathematical expressions. Finally, the calculated value is compared with the experimental value. The results show that the established formula can better reflect the intrinsic relationship between the factors that affect the pipe flow.