竖井进水箱涵段水力特性数学模型研究

Study on Hydraulic Characteristic Mathematical Model of Shaft Influent Box Culvert Section

摘要:

竖井隧道进水段通常采用较平缓的坡度，进水流速低于5 m/s。本项目由于竖井隧道进口段位于现状垃圾体内，边坡自然坡度接近60°，为保障垃圾填埋作业安全，该工程可施工场地受限，边坡开挖范围受限。通过数学模型精准分析，采用绕流加坎消力池措施，解决消能问题，为受限条件下竖井进水的消能减速提供设计思路。

Abstract:

The influent section of shaft tunnel normally adopts the gentle slope. The influent velocity is lower than 5 m/s. The natural slope of this project is close to 600 due to the shaft tunnel influent section located in the current garbage body. The constructable site of this project is limited and the excavation range of the slope is limited. In order to safeguard the safety of garbage landfill work, the measures of circumfluent stilling basin are taken to solve the problem of energy dissipation through the precise analysis of mathematical model, which provides the design idea for energy dissipation reduction of shaft influent under the limitation condition.