Tailings Drainage Wells Experimental Study On Shape Optimization Of Flood Discharge System

In this paper, by connecting with Shaanxi Province Daxigou tailings drainage wells flood systems engineering, we study the frame in different parts of the drainage wells into the flow through the model experiment and do the research on the central body into the stream when the impact of change on the hydraulic parameters, which put forward a more optimal shape design parameters.Test wells in the export of energy dissipation under the same short pressure on the energy dissipation well depth, the energy dissipation in diameter has done a series of changes in 7 groups; in a certain size on better energy dissipation well under the conditions of the export section of the pressure slope height and slope than the group had six changes in diameter of the vent had three groups change, through a series of comparative test study found the main results are as follows:(1) In the course of the experiment, through different parts of the inlet when the flow pattern observation, draw frame catchpits changes in flow pattern sequence, and its head was to determine the critical.(2) Come to different parts of the vent when the inlet flow rate as a weir on the variation of head, and through fitting the experimental data obtained in different parts of the experience into the stream flow coefficient formula.(3) Changes through the vent diameter, wind speed, air volume variation analysis obtained vent diameter d0=0.72m.(4) The export of energy dissipation well pressure at a short comparative study of body shape changes, analysts believe that short pressure on the export section of a reasonable size of 1=1:5,h=0.857h0, orλ=1:4, h=0.571h0.(5) The energy dissipation of energy dissipation rate of the well system,88%-95%, fully satisfy the practical engineering requirements in the energy dissipation.(6) The energy dissipation through the comparative study of changes in well size of proposed energy dissipation wells a reasonable size of H0=1.5D0, D=1.31D0.Tailings drainage wells by hydraulic characteristics of flood discharge system, a systematic study to analyze changes in body size of the impact of various hydraulic parameters to a reasonable size parameters of design, provide a theoretical basis for engineering design.