①前池基础开挖②前池底板砼浇筑③④前池右边墙砼浇筑2个⑤⑥⑦左边墙砼浇筑3个⑧前池进水段底板砼浇筑⑨⑩进水段左右边墙砼浇筑2个⑾⑿启闭机排架砼浇筑2个⒀⒁闸门槽二期砼浇筑2个