Device and method for evaluating damage degree of sandy soil under long-term seepage effect
A technology for damage degree and sandy soil, which is applied in the field of devices for evaluating the damage degree of sandy soil under long-term seepage action, and can solve the problem that there is no experimental device for the degree of soil seepage damage
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Embodiment 1
[0041] see Figure 1-4 , a device for evaluating the degree of damage to sand and soil under long-term seepage action, which includes a tripod 1, a ring 2 is fixed on the top of the tripod 1, and a pressure chamber is detachably installed on the ring 2; the pressure chamber It includes a cylinder 6, a top cover 3 is fixed on the top of the cylinder 6, and an orifice plate 10 is fixed on the bottom of the cylinder 6; a water inlet 4 is arranged at the center of the top cover 3, and the water inlet 4 passes through a water pipe 18 communicates with the water outlet of the water storage tank 19, the top cavity of the water storage tank 19 is connected with the air compressor 21 through the pressure regulating valve 20, and a collecting device is arranged directly below the pressure chamber. By adopting the above-mentioned device, it can be used for the experiment of evaluating the damage degree of sandy soil under long-term seepage, which can solve the problem that there is no ex...
Embodiment 2
[0052] The method for evaluating the degree of damage to sandy soil under long-term seepage action using any one of the described devices, is characterized in that the method comprises the following steps:
[0053] Step 1: Unscrew the locking nut 7, and open the top cover 3;
[0054] Step 2: Put the prepared soil samples into the cylinder 6 layer by layer to ensure that there is no cavity;
[0055] Step 3: Calculate and determine the initial void ratio and initial compactness index according to the soil sample mass, volume, water content and specific gravity;
[0056] Step 4: Place the round permeable stone 8 on the soil sample;
[0057] Step 5: Put on the top cover 3, and tighten the long bolt 5 through the lock nut 7;
[0058] Step 6: Place the pressure chamber above the collection device, and adjust the distance between the two through the tripod 1;
[0059] Step 7: Fill the box body 12 with water, place it on the balance 15, reset the reading of the balance, and start t...
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Abstract
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