水库蓄水内涝影响因素分析及治理方案评价研究——以江西赣江中游河段库区为例

The Waterlogging Influencing Factors Analysis and Countermeasures Assessment of Some Reservoir after Impoundment

大型水库蓄水后,探入基岩修筑应对浸没影响的防渗墙的存在可以起到阻隔河流回水区,缓解浸没影响程度的作用,但也影响了库岸地下水向河流的排泄,造成一定程度的内涝灾害,并对岸边农作物及建筑物产生影响。该文主要针对回水区地下水位、毛细水上升高度、入渗及蒸发特征,3种最直接作用于水库内涝现象的因素进行了分析,结合数值模拟方法提出了减压井与排水渠道相结合的综合治理措施。

Cut-off wall built for coping the effect of immersion in bedrock can play an important role on obstructing the river backwater area and alleviating the influence degree of immersion. However, it can also affect the drainage of reservoir bank groundwater to river, which cau- sing waterlogging disaster to a certain extent and affect crops and buildings near the bank. The backwater area groundwater level, the rising height of capillary water and the characteristic of infiltration and evaporation, which are the three most direct factors on the phenomenon of res- ervoir waterlogging and the comprehensive measures were put foward which combines the relief well and drainage trench into together by using the numerical simulation measure.