Earth and rockfill dam core wall hydraulic fracture test device
A test device and hydraulic splitting technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of deviation of soil mechanical parameters, inconspicuous arching effect, unreliable centrifugal test results, etc., and achieve improvement. Stress conditions, effects to ensure authenticity and accuracy
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[0027] Such as figure 1 As shown, a hydraulic fracturing test device for the core wall of an earth-rock dam includes a pressure chamber 2 and a base 8 for supporting a sample 11 in the pressure chamber 2, and a water injection hole 18 is provided in the base 8.
[0028] Such as Figure 4 As shown, the center of the base 8 is provided with a cylindrical groove 34, the diameter of the cylindrical groove 34 is 1 / 5 of the diameter of the sample 11, the inner side wall of the cylindrical groove 34 is provided with a base thread 35, the water injection One end of the hole 18 extends to the bottom of the cylindrical groove 34;
[0029] Such as figure 2 As shown, the test device also includes a water injection device placed inside the sample 11 and injecting water into the sample 11, which is made of steel. The water injection device includes a hollow sleeve 19 and a hollow cylindrical member sleeved in the sleeve 19 26. The outer diameter of the sleeve 19 is in clearance fit with the in...
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