Device and method for determining permeability coefficient of coarse-grained soil with super large grain size
A technology of permeability coefficient and measuring device, which is applied in the field of parameter measuring device of hydraulic engineering materials, can solve the problems of difficult exhaust saturation and large sample diameter, etc.
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[0068] Such as figure 1 As shown, a super large particle size coarse-grained soil permeability measurement device includes a test cylinder, an automatic pressurization system 11 and a pressure measuring tube 12. The test cylinder is composed of a base support 1, a buffer material container 2, a cylinder body 6 and an upper cover 8 components, wherein, the buffer material container 2 is supported on the upper part of the base bracket 1, the side wall of the buffer material container 2 is provided with a lower exhaust hole 3, and the lower part is provided with a lower water outlet 4; the upper part of the buffer material container 2 It is connected with the cylinder body 6 through sealing bolts 5, and a plurality of cylinder wall pressure measurement and exhaust holes 7 are arranged on the cylinder body 6, and each of the cylinder wall pressure measurement and exhaust holes 7 is provided with a valve; the cylinder wall The upper part of the body 6 is connected with the upper co...
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