The Research On Leakage And Immersion Problems Of Laohe And Juhe River Ecological Treatment Engineering

In order to explore the effect of leakage and immersion on the shallow groundwater in the laohe and juhe river ecological treatment engineering. On the basis of data collection and field environmental investigation, hydrogeological exploration was designed to find out the hydrogeological conditions of the study area,such as the law of groundwater distribution,the condition of supplementary diameter, the formation lithology, etc. Based on the analysis of the seepage path of the lake water, local vertical anti seepage treatment is proposed. Through above research,groundwater numerical model is established to predict the analysis the problems of leakage and immersion in 3 kinds of working conditions, which are lake water storage without seepage treatment,vertical anti seepage treatment and local vertical anti seepage treatment.Numerical simulation results show that: the total annual leakage was 88.9×104m3 when the lake water storage without seepage treatment, the total annual leakage was 29.4×104m3 and 43.3×104m3 when the lake water storage with vertical anti seepage treatment and local vertical anti seepage treatment.which is 33.0% and 48.7% of the total leakage without seepage treatment. The groundwater level prediction results show that: the lake water will cause different degrees of increase of underground water level,which from lakes to the peripheral area gradually decreased. When the lake water storage without seepage treatment, leakage and groundwater level rising phenomenon is very obvious,where the laohe river,juhe river valley, north of the laohe river and south of the juhe river groundwater are immersed in different degrees. Leakage and groundwater level rising phenomenon were obviously improved when the lake water storage with vertical anti seepage treatment. When the lake water storage with local vertical anti seepage treatment, the lake water flow to the lower reaches and groundwater level rising phenomenon were better then the lake water storage without seepage treatment,but the lake water seepage to the fenhe third terrace will still cause laohe river,juhe river valley, north of the laohe river and south of the juhe river of different degree of immersion problems.Through the research of the above numerical simulation, when the lake water storage without seepage treatment the leakage and immersion of the lake has a great influence on the shallow groundwater in the study area. Therefore, it is necessary to deal with the seepage of the lake, it is reasonable and feasible to take the treatment measures of the local vertical seepage control through the comparative analysis of different working conditions. The above research results can provide some theoretical guidance and scientific basis for the laohe and juhe river ecological treatment engineering.