石门沟2#水库黏土心墙堆石坝设计中几个关键技术问题

Several Key Technical Problems in the Design of Shimengou 2# Clay Core Wall Rockfill Dam

通过对兰州新区石门沟2#水库工程黏土心墙坝采用的反设计法设计思路,从防渗体原状料场的颗粒级配入手,反方向推求保护料、过渡料及主堆料的包络线范围,根据工程区料场的分布情况及料源的可开采情况,经过比较,能够较容易达到工程设计要求,且能够最大化利用料场料源,使工程造价最经济合理。通过分析总结,打破了常规设计时保护料、过渡料采用人工轧制加工的常规设计方法,为工程设计提供了新的设计思路,供类似工程参考。

This article adopts the anti-design method design method for the clay core wall dam of Shimengou 2# reservoir project in Lanzhou New District.It starts from the particle grading of the original material yard of the anti-seepage body,and derives the protective material,transition material and main pile.The line range,according to the distribution of the material yard in the project area and the mining conditions of the material source,can be easily compared to the engineering design requirements,and the material source can be fully explored,so that the project cost is most economical and reasonable.Through analysis and summary,the conventional design method of manual rolling processing for protective materials and transition materials in conventional design is hugely improved,which could provide a new design idea for engineering design.