Non-destructive detection method for dam stability

Abstract

The invention relates to the field of dam stability evaluation, and specifically relates to a non-destructive detection method for dam stability. The non-destructive method for dam stability comprises the following steps: (1) determining the positions of N cross sections along the horizontal length direction of a dam to be detected, wherein N is a positive integer; (2) determining the average value of the apparent resistivity of each cross section of the dam; (3) determining the change relationship between the apparent resistivity and the water content of a dam body material; (4) determining the average water content of the cross section of the dam and statistical characteristic parameters thereof; and (5) determining the potential dam break site and the level of dam break risk. The method can overcome the shortcomings and limitations of the traditional dam prediction and evaluation method to a certain extent, and has important application values in the fields of dam stability evaluation and monitoring and early warning.

Description

technical field [0001] The invention relates to the field of embankment stability evaluation, in particular to a non-destructive detection method for embankment stability. Background technique [0002] my country has a long history of dam building, especially since the founding of New China, there have been many upsurges of dam building and reservoir building. However, in the 1950s to 1970s, a large number of river lifts and dams were built and reinforced in my country, most of which were earth-rock dams, with a service life of about 50 years. Moreover, the dams generally have problems such as low standards and low construction quality. After 30 to 50 years of operation, the reservoir facilities are generally aging, and many dams have aging characteristics such as water seepage and cracks in the dam body. The dams not only cannot bring out the benefits of water conservancy projects normally, but also become a weak link and a confidant in the safety of the flood, which serio...

AI Technical Summary

Problems solved by technology

However, due to the diversity and uncertainty of the dam medium properties, as for the soil medium, the soil quality of the dam filling soil is different, and its medium properties are different. Even for the same type of soil, the gradation and rolling degree of the soil will have a significant impact on the medium properties. ; For water media, the composition of water, soil water content, and saturation will all affect the properties of the soil medium, especially the water content of the soil will change with time, and these factors will affect the accuracy of the detection results

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