硬壳轻质围堰在工程中的应用

Use of hard shell and lightweight cofferdam in the projects

有些水利工程本身的造价工程量不大，难度也不大，但围堰的工作量、时间和造价难度却占了很大的比重。提出硬壳轻质围堰结构，以高强度材料制成围堰的外壳，然后填入其它材料。在软弱地基中，采用轻质垫层设于易沉移滑动的部位，在砂砾地基上插设防渗板。具有建筑拆除快、稳定性好、防冲蚀、防渗性好的特点，并结合实际应用，进行强度稳定性分析比较。

Although the cost of some water conservancy project low and the qu antity of the projects is less，and this project is not very difficult，the coff erˉdam of the project accounts for a lot of proportions of time and cost.The ar ticle brings forward the cofferdam with light weight and had shell，which is eas y to backout and has a good stability with the characteristics of antiˉerosion a nd against penetrability.And this paper puts it into practice and compares it with other cofferdam ideas.