Field measurement method for mountain torrent disaster investigation and evaluation

Abstract

The present invention relates to the field of water conservancy measurement, particularly to a field work measurement method for flash flood disaster investigation and evaluation. According to the field work measurement method, a triangle reference station network is constructed from three reference stations, wherein the distance between the reference stations is 40-60 km; the latitude information, the longitude information and the elevation information of each position in the triangular area are measured by using the reference station network; after the measurement of the one triangular area is completed, the one reference station moves while the other two reference stations do not move so as to construct a triangular reference station network again; and the previous steps are repeatedly performed until the measured triangular areas cover all the areas to be measured. According to the present invention, the triangular mobile networking technology is used, and the CORS network is established; the application radius is 50 Km, and the precision is 1-3 cm; the channel cross section and the topography of the village along the river are efficiently, reliably and economically measured; and the working efficiency is 10-100 times the working efficiency of the traditional measurement.

Description

technical field [0001] The invention relates to the field of water conservancy measurement, in particular to a field measurement method for mountain torrent disaster investigation and evaluation. Background technique [0002] my country's mountain torrent disasters are numerous, widespread, and characterized by suddenness, pervasiveness, and destructiveness, making forecasting, forecasting, and early warning difficult. Affected by various factors such as special natural and geographical environment, extreme disastrous weather, and economic and social activities, in recent years, sudden and localized heavy rainfall in my country has caused frequent mountain torrent disasters, resulting in a large number of casualties, accounting for the total number of deaths in flood disasters. The proportion of the number of people is on the rise, and incidents of group death and group injury occur from time to time. According to the strategic deployment of the Party Central Committee and t...

AI Technical Summary

Problems solved by technology

Although the conventional RTK mode of multiple reference stations meets the accuracy requirements in a large range, the required investment is also huge. If the distribution density is reduced, the high-precision range provided by the system cannot completely cover the entire area

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