黄河包头画匠营子取水工程平流式预沉池模型设计

The Modelling Design of Horizontal Flow Presettling Basin Using for Water Lifting Project Located in Baotou Segment of Huanho

本文针对平流式预沉池结构型式及黄河包头段泥沙特点,在现有模型相似律的基础上,引用国内学者的研究成果和实测资料,结合笔者的实测数据,对该模型池的设计进行了探索。在研究模型沙特性的基础上,选用兰州精煤粉作为模型沙;在确定水流挟沙力比尺及含沙量比尺时,选择黄委会水科院公式作为设计依据,避免了以往采用依据不足的比尺公式所带来的问题。经多种方案比选所采用的相似律及比尺表明,本文所完成的模型设计能为模型试验提供可靠的依据。

This paper carried out the investigation of modelling design of horizontal flow presettling basin in consideration of its structure and the properties of silt present in Baotou segment of Huanho, based on the current modelling techniques and similarity criteria, referenced to some research achivements and practical data in china and own experiments. Based on the investigation of character of modelling material, writer selected the refining coal powder as the modelling material. Meanwhile, the formula submitted by the institute of hydraulic research of yellow river conservancy commission was uesd as the design basis to determine the scale of carriering force of water stream to silt particle and the scale of silt content, for avoiding the problems came from the application of another scalling formula which shown unfit. Through a lot of comparision and based on the similarity criteria and scales were applied, the modelling design has completed and the reliable basis has established for modelling test.