Design And Research On The Reinforcement Project Of Xiaojia Reservoir In Gongqing City

The design and research of xiaojia reservoir reinforcement project in gongqing city is based on the analysis,calculation and evaluation of practical problems.Xiao jia reservoir is a small(2)type reservoir.Due to capital and technical constraints in the early stage of construction,low design standards,and decades of operation without good management and maintenance,there are hidden safety hazards,which affect the positive and normal performance of the reservoir,and even threaten the downstream safety of the dam.Therefore,it is urgent to carry out risk prevention and reinforcement.This paper mainly does the following work:1.The basic problems of the reservoir are collected and sorted out,and the necessity of reservoir reinforcement is analyzed.The dam body is thin,the slope is steep,the stability is poor,the foundation,the dam body leakage is serious,the leakage building damage is serious and so on.2.In view of the dangerous condition of the reservoir and keeping the existing scale of the reservoir unchanged as the benchmark,the design scheme of danger elimination and reinforcement is proposed from three aspects:(1)dam reinforcement:the intercepting flume is combined with the clay inclined wall of the dam for anti-seepage treatment,and the upstream concrete precast block slope protection,the downstream turf slope protection,and the dam foot are added with slope facing drainage body.(2)spillway reinforcement:reconstruct the spillway and add traffic bridge on the upper part.(3)reinforcement of water conveyance buildings: the culvert under the dam is demolished and rebuilt as φ 300 mm PVC pipe wrapped with reinforced concrete,a reinforced concrete structure stilling box is added,and the inclined pipe is rebuilt at the inlet.3.Follow up the implementation of the reinforcement of the reservoir for post evaluation.Based on the study of Xiaojia reservoir’s design scheme of danger elimination and reinforcement,this paper takes the project reconstruction as the main measure to solve the hidden danger of reservoir safety,eliminate the threat of flood such as dam break in the lower reaches of the reservoir,improve the irrigation capacity of the reservoir,and give full play to its comprehensive benefits of benefit elimination and harm elimination.From the perspective of engineering construction and operation,this goal has been achieved.