Earth surface in-situ rock-soil triaxial compression test device
A technology of triaxial compression and testing device, which is used in measuring devices, sampling devices, and testing the strength of materials by applying stable tension/pressure. Improve accuracy, improve stability and accuracy, and ensure the effect of accuracy
Pending Publication Date: 2019-04-05
孟达
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Problems solved by technology
[0007] At present, in-situ testing of rock and soil generally uses multiple independent equipment to conduct different experiments, and then obtains relevant test results based on the test data of different equipment. device
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[0023] Such as figure 1 , 2 As shown, one embodiment of the present invention discloses an in-situ rock and soil triaxial compression test device for ground rock and soil, which is used for direct sampling of ground rock and soil and field test of stress and confining pressure. The test device generally includes a cylindrical hollow outer tube 10 , And the inner tube 20 installed inside the outer tube 10 for taking soil samples, the inner tube 20 can move axially relative to the outer tube.
[0024] One end of the outer tube 10 is a control end 12 for holding and a computing unit is installed inside, the other end of the outer tube 10 is a drill bit end 13 that is convenient for drilling into the ground, and the inner tube 20 is located at the end of the drill bit end 13 as a pipe shoe 21 The structure extends out of the outer tube 10, and a hydraulic part 30 for providing hydraulic power is installed in the end of the inner tube 20 close to the control end 12, and a vertical pres...
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The invention provides an earth surface in-situ rock-soil triaxial compression test device. The earth surface in-situ rock-soil triaxial compression test device comprises a cylindrical hollow outer pipe, wherein one end of the outer pipe is a control end for supporting, and the control end is internally provided with a computing element, and the other end of the outer pipe is a drill bit end. An inner pipe for sampling soil is movably installed in the outer pipe, and the end, located at the drill bit end, of the inner pipe is of a pipe boot structure and extends out of the outer pipe. A hydraulic pressure part, a vertical pressure part and a confining pressure part are installed in the inner pipe, wherein the hydraulic pressure part provides hydraulic power, the vertical pressure part is driven by the hydraulic pressure part to apply vertical pressure to the collected soil samples, and the confining pressure part applies radial confining pressure to the collected soil samples. A user erects the drill bit end of the outer pipe directly on the ground to perform manual soil sampling. According to the earth surface in-situ rock-soil triaxial compression test device, micro-disturbance soil sampling is directly carried out on the ground by using a sampling power principle of a soil sampler, a data test is carried out on the soil samples by a sensor by adopting MEMS, two sets of hydraulic circuits are used for applying the vertical pressure and the confining pressure so that the stability of load can be ensured, and the accuracy of experimental data is ensured and improved to themaximum extent.
Description
Technical field [0001] The invention relates to the field of construction, in particular to an in-situ triaxial compression test device for in-situ stress and confining pressure strength tests of rock and soil in surface geotechnical engineering. Background technique [0002] The rock mass structural unit is composed of rock blocks (blocky, plate-shaped, complete or broken), structural surfaces (soft structural surfaces, hard structural surfaces) and fillings. Due to the development and distribution of various structural surfaces, Uniformity makes its deformation properties much more complicated than rock deformation. Therefore, the deformation of rock mass cannot be expressed by the deformation of rock, and its deformation index must be determined through rock mass deformation experiments. The rock mass deformation experiment is a rock mass field experiment conducted to determine the deformation characteristics of the rock mass under a certain load or unloading action. The indi...
Claims
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IPC IPC(8): G01N3/12G01N3/06G01N1/08
CPCG01N3/12G01N1/08G01N3/06G01N2203/0019G01N2203/0048
Inventor 郑梦雨孟达马飞
Owner 孟达