新时期淤地坝规划设计中的若干技术问题探讨

Research on some technical issues in the plan and design of check-dams

大规模淤地坝建设是一项非常浩大和复杂的工程,为科学合理地规划、设计和建设淤地坝,保证其安全运行和工程效益的发挥,避免和解决过去淤地坝建设中存在的一些问题,本文提出了新时期在黄土高原建设生态型、节水型和可持续发展型淤地坝的技术思想,就坝系相对稳定、淤地坝洪水设计标准和不达标淤地坝的处理标准、淤地坝随淤随用、提高竖井排洪能力、岸边溢洪道、土坝过水和水坠坝的快速施工等技术问题进行了探讨,并提出了具体的技术措施。

In this paper, the authors put forward a technical idea about applying checkdams of ecotype, water saving type and for sustainable development in the Loess Plateau in the modern time. In order to plan, design and construct checkdams scientifically and reasonably, aiming at ensuring safe operation and benefits exploitation of projects and solving some problems happened in the past checkdams construction, investigations were made on the following technical issues: relative stability of checkdam system, flood protection standards, treatment of existing checkdams below design standard, silted land utilization in the process of siltation, increasing flood passage capacity of vertical shafts, side spillway and earth dam overtopping problems, fast construction of sluicingsiltation earth dam etc. Proposals ware also made on some detailed technical measures.