General water disaster loss model building method

Abstract

The invention provides a general water disaster loss model building method. The method includes the steps that according to survey data, horizontal coordinates are used for representing disaster-inducting factors, vertical coordinates are used for representing water disaster losses, and a water disaster loss S-shaped curve functional relationship with a physical mechanism is built; the S-shaped curve functional relationship is described quantitatively by using a mathematics means, and a replacement function of a water disaster loss S-shaped curve is built; water disaster loss function parameters are determined according to mathematical expression of a water disaster loss function and characters of the S-shaped curve. According to the general water disaster loss model building method, due to the fact that the general water disaster loss function with the physical mechanism and a corresponding parameter system of the function are built, a simple and formal water disaster loss calculation method is formed, the water disaster loss calculation procedure is simplified, and the result is more accurate and more credible. Corresponding parameters in the function can be used and popularized in the area with similar features or when future disaster losses are predicted and extension in area and update in time are achieved.

Description

technical field [0001] The invention belongs to the technical field of water damage loss estimation, in particular to a method for constructing a general model of water damage loss. Background technique [0002] China is a country with frequent floods and droughts, and the economic losses caused by various types of water disasters are huge every year. Therefore, it is very necessary to establish a simple and effective water disaster loss assessment method for timely and accurate assessment of disaster losses for disaster prevention and mitigation. [0003] For the assessment of various water damage losses, the most accurate method is to start from the smallest unit corresponding to the disaster-affected body (a family, a business, or a sub-basin), and carry out loss measurement statistics and summaries layer by layer. In fact, such a measurement and statistics method is difficult to carry out. Therefore, it is necessary to use scientific means to establish a general model o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for constructing a general model of water damage loss, which aims to solve the problems of existing water damage loss assessment methods such as complexity, inconsistency, and inaccurate assessment results.

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