Numerical Simulation Of Seepage Flow In Seepage Well Of Xipo Pump Station Based On GMS

With the rapid development of the whole economy in the Yellow River basin,the contradiction of water resources in the Yellow River basin has become more and more prominent,and the solution of the contradiction of water resources supply in the region has also become the focus of the relevant scholars.In the Yellow River diversion project,the seepage well collecting water and the subsurface flow corridor become the preferred way of water intake.However,in the design process of seepage well collecting water,the designers usually adopt pumping test method and theoretical analysis method,which have obvious disadvantages,such as: pumping test method is time-consuming while increasing the cost;Theoretical analysis has strong limitations.Therefore,it is necessary to introduce the method of numerical simulation into engineering by means of modern scientific calculation.Based on the seepage well project of Xipo pumping station in Liulin county,this paper uses GMS software to carry out numerical simulation analysis on the seepage of seepage well.The main contents of the research include: summarizing the development status of groundwater engineering numerical simulation;development of seepage well;introduce the GMS simulation software;establish a correct and reasonable model;based on the seepage model of seepage well,this paper analyzes the water depth-water yield,sediment deposition-water yield;Some Suggestions for the optimization of the seepage well are put forward and the numerical simulation is carried out.Through research and analysis,get the following conclusion: numerical simulation income level degree of agreement with the observed water level is higher,at the same time,numerical simulation of the water depth-water yield curve is consistent with analytical method in a certain water level,the parameters of the model selection is reasonable,also suggests that using the GMS simulates the shallow water of the Yellow River is feasible.Through the analysis and prediction of the numerical model during the operation of the seepage well,it can be seen that due to Sedimentation the permeability coefficient of the filter material will decrease continuously and the water output of the seepage well will also decrease continuously.In order to solve the problem of filter material sedimentation in seepagewell,some optimization Suggestions were put forward and numerical analysis was carried out,and the following conclusions were drawn: "reverse flushing" could be realized by injecting water into seepage well,that is,the flow carried the sedimentation material around seepage well in reverse flow,and the purpose of flushing filter material and increasing filter material permeability coefficient was finally achieved.The selection of a horizontal radiation tube with a length of 30 m can not only effectively increase the water output of a seepage well,but also save investment.The permeability coefficient,water level drop and stability of sand free concrete slab before and after being affected by silting are better than grading sand and gravel and outsourcing non-woven cloth.Therefore,it is recommended to choose sand free concrete slab as filter material for the flow well in the shallow bank of the Yellow River.