基于防洪调度水库设计水位复核及坝体稳定性分析

Design Water Level Check and Dam Stability Analysis Based on Flood Control Dispatching Reservoir

为了分析小型水库土质坝体的现状稳定性,以盖家水库为例,充分收集水文、地形等相关资料,使用理论计算方法获取暴雨参数,并绘制P=10%(设计)、P=5%(校核)2种工况下的洪水过程线,结合现状溢洪道泄量特征,确定水库防洪调度方案,从而确定水库的现状设计、校核洪水位,结合STAB软件确定现状土坝坝体在不同工况下的稳定性,计算结果表明土坝受扰动较小,稳定性满足规范要求。

In order to analyze the stability of the earth dam body of small reservoir,taking Gaijia Reservoir as an example,the relevant hydrological and topographic data are collected,the rainstorm parameters are obtained by theoretical calculation method,and the flood process lines under two working conditions of P=10%(design)and P=5%(check)are plotted.Considering the current spillway discharge characteristics,the reservoir flood control regulation scheme is defined.Thus the current design of the reservoir and check flood level are defined.In addition,the stability of the current earth dam under different working conditions is determined by STAB software.The calculation results show that the earth dam is less disturbed and the stability meets the requirements of the Code.