Indoor simulation test device for subgrade slope scour

Abstract

The invention discloses an indoor simulation test device of roadbed slope washing. The indoor simulation test device comprises a slope simulation device and a rainfall simulation device, wherein the slope simulation device comprises a panel slot, and an angle indicator I is arranged on the panel slot; the rainfall simulation device comprises a car body, a position adjustment mechanism, a nozzle for spraying water, a spray box for installing the nozzle and an angle indicator II for detecting an angle between the spray box and a horizontal plane; the position adjustment mechanism comprises a base, a lifting oil cylinder, a support plate, an adjustment oil cylinder I and an adjustment oil cylinder II, the base is fixed on the car body, and the support plate is connected with the base through the lifting oil cylinder; the spray box is connected with the support plate through the adjustment oil cylinder I, the adjustment oil cylinder I is supported by the adjustment oil cylinder II, and an inclined angle between the adjustment oil cylinder I and the horizontal plane is changed by virtue of the extension and retraction of the adjustment oil cylinder II. According to the indoor simulation test device, the slope washing performance at different rainfall angles can be researched, a full test basis is provided for design and construction of roadbed slope structures, and the slope treatment is facilitated.

Description

technical field [0001] The invention relates to the field of slope stability simulation tests, in particular to an indoor simulation test device for 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 are not affected by natural...

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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