Mold for preparing test piece of geotechnical model and preparation method
A model test and specimen technology, which is applied in the field of tunnel engineering and geotechnical engineering, can solve the problems of damage, easy defect of specimen, disturbance and destruction, etc., and achieve the effects of avoiding leakage, low cost, avoiding disturbance and destruction
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Embodiment 1
[0051] In a typical embodiment of the present invention, such as figure 1 and figure 2 As shown, a mold for preparing rock and soil model test specimens includes a mold support frame 1, a test piece tube 2, a push rod 3, and a pressing plate 4. The mold support frame 1 is used to limit the test piece tube 2, and the model The support frame 1 is higher than the test piece cylinder 2 to support the push rod 3, the top of the test piece cylinder 2 is provided with a cylinder cap 8, the cylinder cap 8 is set higher than the specimen cylinder 2, and the cylinder cap 8 is connected to the specimen cylinder 2 , the test piece cylinder 2 can move freely vertically in the support frame 1 by pulling the cylinder cap 8 , the pressure plate 4 is located in the inner cavity of the test piece cylinder 2 , and the pressure plate 4 is welded with the push rod 3 .
[0052] Among them, such as Figure 6 As shown, the push rod 3 is provided with pin holes every set distance such as one centim...
Embodiment 2
[0059] A kind of preparation method that is used to prepare rock-soil model test specimen, adopts a kind of mold that is used to prepare rock-soil model test specimen described in embodiment 1, comprises the following contents:
[0060] Step 1: According to the required mixing ratio, prepare the similar material 7 of the test piece with the set ratio and fully stir;
[0061] Step 2: After adjusting the length of the push rod 3 entering the test piece cylinder 2 according to the size requirements of the test piece, pass the second pin through the second pin hole of the cylinder cap 8 and the pin hole at the corresponding position of the push rod 3, and the first pin Pass through the first pin hole of the cross bar 6 of the mold support frame and the pin hole at the corresponding position of the push rod 3;
[0062] Step 3: After inverting the mold, add the stirred sample similar material 7 into the test piece cylinder 2 and fully tamp it;
[0063] Step 4: After erecting the mo...
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