基于水量平衡的设计内涝水位计算

Design Waterlogging Level Calculation based on Moisture Balance

摘要:

设计内涝水位是工程设计中非常重要的参数之一，往往决定了工程设计的设计标高或防排洪方案。目前国内应用最广泛的计算方法是历史加成法,其结果可靠性很大程度取决于调查的历史内涝高水位,但常规的人工调查存在诸多弊端。本文基于水量平衡原理,采用卫星影像推算历史内涝水位,提出水位衰减速度计算方法,从而推算设计内涝水位。计算示例表明，虽然对卫星影像有一定的要求,但结果是科学合理的，有一定的适用性。

Abstract:

Designed waterlogging level is one of the very important parameters in engineering design, which often determines the design elevation or flood prevention and drainage scheme of engineering design. At present, the most widely used calculation method is the historical addition method. The reliability of the result depends on the historical waterlogging high water level, but the conventional manual survey has many drawbacks. Based on the principle of moisture balance, this paper uses satellite image to calculate the historical waterlogging level, and puts forward the calculation method of water level decay velocity, so as to calculate the design waterlogging level. The calculation example shows that although there are certain requirements for satellite images, the results are scientific and reasonable, and have certain applicability.