In-situ mechanical property measurement device for contractible connecting rod driving type rock-soil aggregate

A soil-rock mixture, connecting rod-driven technology, applied in the direction of using a stable shear force to test the strength of materials, can solve the problem of not being able to truly reflect the original stress state of the soil-rock body, and achieve high test results accuracy, reliable device structure, Simple to use effects

Inactive Publication Date: 2012-07-25
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stretchable connecting rod-driven in-situ mechanical performance measurement of soil-rock bodies in view of the fact that the in-situ testing of soil-rock bodies is mainly

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  • In-situ mechanical property measurement device for contractible connecting rod driving type rock-soil aggregate
  • In-situ mechanical property measurement device for contractible connecting rod driving type rock-soil aggregate
  • In-situ mechanical property measurement device for contractible connecting rod driving type rock-soil aggregate

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Embodiment Construction

[0026] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] Such as figure 1 , 2 , 3, and 4, the in-situ mechanical property measuring device of the retractable connecting rod-driven soil-rock mixture of the present invention includes: a probe rod 12, a cylindrical sealing chamber 9, a sealing chamber base 8, a connecting rod driving mechanism 4, an expansion Plate 5, rigid hollow rod 2 and fixture 1.

[0028] The probe rod 12 has a predetermined length. In the embodiment of the present invention, the drill rod of the drilling rig 15 can be used. Of course, it can also be a separately provided rod that can extend to the bottom of the drilled hole, and is hollow inside along the axial direction, so as to place the rigid hollow rod 2 .

[0029] The cylindrical sealing cavity 9 can expand in the radial direction, and one end of the sealing cavity 9 is detachably mounted on one end of the probe rod 12 throu...

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Abstract

The invention discloses a shearing measurement device for a contractible connecting rod driving type rock-soil aggregate. The in-situ mechanical property measurement device comprises a detection rod, a barrel-shaped sealing cavity, a base, a rigid hollow rod, a clamp, a connecting rod driving mechanism, an expansion board, a displacement sensor and a tension sensor, wherein the barrel-shaped sealing cavity can expand in the radial direction; one end of the sealing cavity is detachably arranged at one end of the detection rod through a jacking cap; the base is sleeved at the other end of the sealing cavity; the rigid hollow rod is sleeved in the detection rod and the sealing cavity; the clamp is arranged at one end of the hollow rod, which extends out of the base; the connecting rod driving mechanism is arranged between the base and the clamp; the expansion board is arranged on the connecting rod driving mechanism; the displacement sensor is arranged on the detection rod; and the tension sensor is used for measuring tension when the detection rod is moved in the axial direction. The contractible connecting rod driving mechanism drives the expansion board to freely expand and contract in a predrilled hole; the expansion board can contract to sink to different depths in the hole; during rotary expansion of the expansion board, the hole can be expanded and the rock-soil aggregate can be crushed; a lifting probe device can shear and damage the rock-soil aggregate; and in-situ shearing strength index test on the rock-soil aggregates at different depths can be finished.

Description

technical field [0001] The invention relates to the technical field of in-situ shear strength index testing of rock and soil bodies, in particular to a retractable connecting rod-driven in-situ mechanical property measurement device for soil-rock mixtures. Background technique [0002] The on-site test can directly test the mechanical performance index of the in-situ soil and rock body, which is very necessary for guiding engineering design and on-site safe production. [0003] At present, the in-situ test is mainly to measure the relevant mechanical parameters on the ground or at a certain depth, and most of them are suitable for the soil. The existing in-situ test results cannot reflect the real original stress state of the soil and rock, and the measurement results are often quite different from the actual ones. . [0004] In addition, because the existing in-situ test has a great influence on the disturbance of the soil, the test results cannot meet the requirements of ...

Claims

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Application Information

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IPC IPC(8): G01N3/24
Inventor 吕祥锋刘晓宇范永波李世海
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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