Rainfall simulation device for indoor simulation test of subgrade slope scour

Abstract

The invention discloses a rainfall stimulation device used for roadbed slope erosion indoor simulation tests. The device comprises a vehicle, a position adjusting mechanism, sprayers used for spraying water, a spraying box used for installing the sprayers, and an angle indicator II used for detecting the angle between the spraying box and the horizontal plane. The position adjusting mechanism comprises a base, a lifting cylinder, a supporting plate, an adjusting oil cylinder I and an adjusting oil cylinder II, the base is fixed to the vehicle, the supporting plate is connected with the base through the lifting oil cylinder, the spraying box is connected with the supporting plate through the adjusting oil cylinder I, the adjusting oil cylinder II supports the adjusting oil cylinder I, and the inclination angle between the adjusting oil cylinder I and the horizontal plane is changed by stretching and retracting the adjusting oil cylinder II. The device can be used for researching slope erosion performance at different rainfall angles, more sufficient testing bases are provided for design and construction of a roadbed slope structure, and slope treatment is better benefited.

Description

technical field [0001] The invention relates to the field of slope stability simulation tests, in particular to a rainfall simulation device used for indoor simulation tests of roadbed slope scour. Background technique [0002] The main factors affecting the scour of the subgrade slope include the type and degree of compaction of the slope soil filler, the slope length, slope and ecological protection status of the slope, the intensity and duration of rainfall, etc. Finding out the relationship of different factors to slope scour is the key to the study of subgrade slope scour. At present, field tests and indoor simulation tests are commonly used in roadbed slope scour tests. Due to the strong seasonal distribution of natural rainfall and the extremely uneven annual distribution of field tests, the period is long and the cost is high. Due to the influence of external forces such as freezing and thawing, it is difficult to obtain effective data; while indoor simulation tests...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned test device, the sprinkler head of the sprinkler is fixed. Although the intensity of the simulated rainfall can be adjusted through the water pump and related valves, the angle between the simulated rainfall and the simulated slope cannot be adjusted; In the actual environment, affected by the wind speed, the slope of the same slope often encounters rainfall erosion at different angles, that is, the test device cannot study the erosion performance of the slope under different rainfall angles, and it cannot be used for the design of the subgrade slope structure. Provide sufficient test basis for construction and construction

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