Visual experiment device and experiment method in consideration of slope instability soil displacement under seepage-stress-rainfall coupling effect
A technology of slope instability and test equipment, applied in the field of engineering tests, can solve the problems of stress, strain, displacement field measurement, inaccurate observation of equipment costs, etc., and achieve high feasibility
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Embodiment 1
[0034] The first step: place a transparent model box 16, a water supply pipe 11 and a water supply box 1 in a flat site. The transparent model box 16 is a rectangular parallelepiped made of organic transparent glass with an upper opening and a size of 500mm (length)* 500mm(width)*400mm(height); in order to achieve the expected effect of this test, the realization environment of this test is set in the dark; No. 5 white oil is mixed into a solution at a certain temperature (24°C in this example) and a certain humidity (30% in this example) at a certain mass ratio (1:4 in this example); The solution is mixed with fused silica sand and fully mixed to prepare saturated transparent soil 17 with a designed relative density; the fused silica sand should have a particle size range of 0.5mm-1mm;
[0035] The obtained transparent soil 17 was slowly placed in the transparent model box 16 at a certain inclination angle to simulate the slope. In order to better achieve the effect of this e...
Embodiment 2
[0043] In Example 1, the influence of top loading on slope instability and failure is studied under the condition of controlling rainfall and seepage head constant. Change the implementation of steps 2, 3, and 6. On the loading plate on the top of the slope of the transparent soil 17, place the weight 10 with the set load; inject the mixed solution of n-dodecane and No. 15 white oil with the same proportion as the transparent soil 17 into the water supply pipe 11 To the set water head height, and keep the osmotic water head unchanged during the test, open the water stop clip 13, so that the water supply pipe 11 has a mixed solution of n-dodecane and No. 15 white oil with the same proportion as the transparent soil 17 After passing through the gravel layer 14, the transparent soil 17 is impacted; the water pump 4 and a certain water level regulating valve 5 are turned on, so that the mixed solution of n-dodecane and No. 15 white oil in the water supply tank 1 with the same prop...
Embodiment 3
[0045] In Example 1, the influence of the load on the top of the slope on the instability and failure of the slope is studied under the condition of controlling the rainfall and the seepage head constant. Change the implementation of steps 2, 3, and 6. On the loading plate on the slope top of the transparent soil 17, place the weight 10 for the set load; inject the mixed solution of n-dodecane and No. 15 white oil with the same proportion as the transparent soil 17 into the water supply tank 1 , adjust the rain board 7 to a certain height through the intelligent lifting device 3, in this example, the vertical distance between the rain board 7 and the slope top of the transparent soil 17 is set to 400mm; one end of the rain board 7 is always inserted into the water supply tank 1. Below the liquid level; a water pump 4, a water level regulating valve 5 and a flow meter 6 are provided on the rainfall plate; the water pump 4 and a certain water level regulating valve 5 are turned ...
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