论文部分内容阅读
在相同试验条件下床用无坝处理、单坝处理、双坝处理、单坝加双坝组合处理，设１０种组合试验。试验用的模型坝分３种类型（Ｌ／ｄ９５＝３．５类型Ⅰ）、２．５（类型Ⅱ）、１．９（类型Ⅲ）。分别进行泥石流泥沙体积分数（ｖ）的变化测试、泥石流粒径变化的试验研究。其结果：在上游配置类型Ⅰ、类型Ⅱ，在下游配置类型Ⅲ的情况下，峰值排沙量减少率与总排沙量减少率提高，ｖ随时间的延长而降低。在上游配置类型Ⅰ、类型Ⅱ，在下游配置类型Ⅱ情况下，峰值排沙量减少率没有太大的变化。但总排沙量减少率变低，队随时间的延长而增高。关于ｄ９５粒径随时间的变化情况，连续配置与设置１座时没有明显的差别。
Under the same test conditions bed without dam treatment, single dam treatment, double dam treatment, single dam plus double dam combination treatment, set of 10 kinds of combination test. The experimental model dam is divided into three types (L / d95 = 3.5 Type I), 2.5 (Type II), 1.9 (Type III). The change of sediment volume fraction (v), the change of particle size of debris flow were studied respectively. As a result, in the case of Type I and Type II in the upstream configuration and in the case of Type III in the downstream configuration, the rate of reduction of peak sediment discharge and the rate of reduction of the total sediment yield increase, and v decreases with time. In the upstream configuration type Ⅰ, type Ⅱ, in the downstream configuration type Ⅱ case, the peak sediment reduction rate did not change much. However, the total sediment reduction rate becomes lower and the team increases with time. About d95 particle size changes with time, continuous configuration and set a no significant difference.