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In-situ confining pressure experiment device for rock-soil body in rock-soil drilling

An experimental device and rock-soil technology, applied in measuring devices, sampling devices, using stable tension/pressure to test the strength of materials, etc., can solve the problems of lack of fully automated intelligent testing devices, cumbersome and lengthy testing processes, etc., to achieve Ensure the load, improve the accuracy, and ensure the effect of accuracy

Pending Publication Date: 2019-04-30
孟达
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  • Description
  • Claims
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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

Method used

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  • In-situ confining pressure experiment device for rock-soil body in rock-soil drilling
  • In-situ confining pressure experiment device for rock-soil body in rock-soil drilling
  • In-situ confining pressure experiment device for rock-soil body in rock-soil drilling

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Embodiment Construction

[0022] Such as figure 1 , 2 As shown, one embodiment of the present invention discloses an in-situ confining pressure test device for rock and soil in a rock and soil borehole, generally comprising a cylindrical hollow outer tube 10, and an 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.

[0023] One end of the outer pipe 10 is an external power connection end 11 for connecting external power, and a control end 12 for controlling the sampling and testing process. The other end of the outer pipe 10 is a drill end 13 for drilling into the ground, and the inner pipe 20 is located at the drill end 13 The end of the tube shoe 21 is structured and extends out of the outer tube 10. A hydraulic part 30 that provides hydraulic power is installed in the end of the inner tube 20 close to the control end 12, and is driven by the hydraulic part 30 to exert a vertical force on the collected soil sample...

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Abstract

The invention provides an in-situ confining pressure experiment device for a rock-soil body in rock-soil drilling. The device comprises a cylindrical hollow outer pipe; one end of the outer pipe is anexternal power connecting end and an experiment control end; the other end is a drill bit end; an inner pipe used for taking soil is movably mounted in the outer pipe; the end, located at the drill bit end, of the inner pipe is of a pipe shoe structure and extends out of the outer pipe, and a hydraulic part for providing hydraulic power, a vertical pressure part driven by the hydraulic part to apply vertical pressure to a collected soil sample and a confining pressure part for applying radial confining pressure to the collected soil sample are installed in the inner pipe. The sampling power principle of a soil sampler is utilized, and a ground power device is adopted to carry out micro-disturbance soil sampling; two sets of hydraulic circuits are adopted to apply vertical pressure and confining pressure, so that the stability of load can be ensured, and the accuracy of experimental data is ensured and improved to the maximum extent.

Description

technical field [0001] The invention relates to the construction field, in particular to an in-situ confining pressure experimental device for performing in-situ stress and confining pressure strength tests on rock and soil bodies in geotechnical engineering boreholes. Background technique [0002] The structural unit of rock mass is composed of rock blocks (massive, plate-like, complete or fragmented), structural planes (weak structural planes, hard structural planes) and fillings, etc. Due to the uneven development and distribution of various structural planes Uniformity makes its deformation properties much more complex than that of rock deformation, so the deformation of rock mass cannot be expressed by the deformation of rock mass, and its deformation index must be determined through rock mass deformation experiments. The rock mass deformation test is a rock mass field experiment conducted to determine the deformation characteristic index of the rock mass under a certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08G01N3/12G01N3/06
CPCG01N1/08G01N3/06G01N3/12G01N2203/0019G01N2203/0048
Inventor 郑梦雨孟达马飞
Owner 孟达
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