箱型结构物封堵堤坝溃口的技术

Technology of Closuring Dam-breach with Box-shape Configuration Substance

基于汛期堤坝溃决的巨大破坏性 ,提出用箱型结构物封堵堤坝溃口的技术方案。该方案简单快速 ,通过远距离控制作业 ,可保证安全 ,降低作业强度及堵口成本。为确保这一堵口方案的安全性、可行性 ,设计堤坝溃口模型及箱型结构物模型 ,对溃口进行水力学模型试验。试验得到了溃口水流流量、流速、流态的变化规律 ,及沉箱顺序和裹头构筑对溃口水力特性的影响。这为制定用箱型结构物堵口作业方案提供了科学依据 。

Based on the strong destructiveness of dam breaking during flood season, the technology scheme of closuring dam-breach with box-shape configuration substance is introduced. The scheme is simple and efficient. Long-range control operation ensures safety, and reduces labour intensity and cost of closuring dam-breach. In order to ensure safety and feasibility, the models of dam-breach and box-shape configuration are designed. By making a hydraulics experiment on the dam-breach model, the change law of dam-breach flux, flow velocity and flow posture are gained, together with the influence of the sinking-boxes sequence and dam protection on the dam-breach hydraulics characteristic. The experiment provides scientific foundation for a scheme of closuring the dam-breach and supplies reference for probing other way of closuring the dam-breach.