Response of Groundwater Level Under Different Recharge Conditions in Horqin District,Tongliao City
With the development of society and economy,in order to meet the demand for agricultural production,the scale and quantity of production wells continue to expand,causing serious overexploitation of groundwater.And the local groundwater level continues to decline,seriously restricting local development.Refering to the location of areas with se-vere groundwater level decline,the distribution of water systems,the amount of water diverted by the water diversion project,and the recharge capacity of individual wells,the recharge methods including river channels,recharge wells,and combination of river channel with recharge wells were selected.Nine recharge schemes were designed under different pre-cipitation conditions.The software FEFLOW was used to establish the corresponding numerical model of groundwater flow for simulating different schemes.The response of groundwater level under each scheme was analyzed.The results show that under the conditions of wet year,scheme s3 had the highest average increase in groundwater level and the res-toration effect of groundwater level is the best.However,scheme s2 had the smallest unit recharge amount and the high-est recharge efficiency,followed by scheme s3.The results were similar in normal and dry water years.This research re-sult can provide important references for the restoration of local groundwater levels and the rational development and utili-zation of groundwater resources.
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