尾矿库排洪系统竖井深度对泄流能力的影响研究

摘要

通过水露沟尾矿坝加高扩容工程,研究尾矿库排洪系统竖井深度对泄流能力的影响规律.在该工程中,有9个排洪支系统的排水井内外径 、竖井内径 、隧洞断面一致,而竖井深度不一致.选取其中3个代表性的排洪支系统,改变排水井的进水口高程,进行水工模型试验,得到了一系列的排水井进水水头与泄流量的关系曲线.以此为基础,通过实验数据分析不同竖井深度对泄流量的影响规律,建立泄流量与竖井深度之间的拟合函数关系.%In this paper the influence of shaft depth on discharge capacity of tailings pond flood system was analyzed based on the Shuilugou tailings dam heightening engineering .There are 9 flood systems whose inner diameter and outer diameter of the drainage well ,inner diameter of the shaft and the tunnel sections are consistent ,while they have different shaft depth .By selecting 3 representative flood systems and changing the intake elevation of the drainage well ,we carried out the hydraulic model experiment ,from which a series of relation curves between water head and flow rate of the drainage well were obtained .Basing on the curves ,the experiment data can then be used to analyze the influence rule of different shaft depth on the flow rate ,and establish the fitting function .