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Uniaxial compression creep test method for saturated and unsaturated rock-soil body

A uniaxial compression and creep test technology, applied in the direction of testing the ductility of materials, can solve the problems of long-term creep and long-term compressive strength of soft rock/hard soil, and achieve the effect of simple manufacturing and high measurement accuracy

Inactive Publication Date: 2012-10-10
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a saturated unsaturated rock-soil mass uniaxial compression creep test method to solve the measurement problem of long-term creep and long-term compressive strength of soft rock / hard soil in saturated or unsaturated state

Method used

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  • Uniaxial compression creep test method for saturated and unsaturated rock-soil body
  • Uniaxial compression creep test method for saturated and unsaturated rock-soil body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0012] Embodiment: the test method for measuring soft rock / hard soil uniaxial compression deformation is as follows:

[0013] (1) Creep test method of sample under saturated condition:

[0014] ①Installation of the sample: First, the sample 17 is pumped and saturated, and the upper permeable stone 16 and the lower permeable stone 18 are soaked, then the lower permeable stone 18 is placed on the base 19, and the saturated sample 17 is covered with a rubber film Installed on the lower permeable stone 18, place the upper permeable stone 16 on the sample 17, add a top cap 15 on the top of the upper permeable stone 16, and fix the top cap 15 and the base 19 with a rubber ring.

[0015] ②Water filling preparation: install the pressure chamber 5 on the pressure chamber base 24, tighten the bolt 3, align the pressurizing shaft 11 with the top cap 15, close the drain pipe valve 9, open the drain pipe valve 21, the upper drain pipe valve 13 and Water inlet pipe valve 7, the pressure ch...

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Abstract

The invention discloses a uniaxial compression creep test method for a saturated and unsaturated rock-soil body, which is characterized in that the uniaxial compression creep test for the rock-soil body is carried out by a device. The device mainly comprises a water tank (1), a pressurized framework (2), a dial indicator (4), a pressure chamber (5), a water inlet pipe (6), a water outlet pipe (8), a pressurized shaft (11), an upper drain pipe (12), a water conduit (14), a drift cap (15), an upper porous stone (16), a lower porous stone (18), a base (19), a water measuring pipe (20), a lower drain pipe (23), a pressure chamber base (24), a dead bolt (25), a weight (26), a pressurized lever (30) and the like. The instrument has the advantages of simpleness in manufacture and high measurement precision, can be used for directly measuring the long-term creep compressive strength and the deformation parameter of various soft rocks and hard soils under the saturated and unsaturated condition, and can be used for the indoor and field tests for various soft rocks and hard soils in the civil engineering. The test method is mainly divided into three steps of installing a test sample, making a water filling preparation and loading the test sample.

Description

technical field [0001] The invention relates to a geotechnical testing method, which belongs to the technical field of civil engineering (geotechnical) engineering. Background technique [0002] Scholars at home and abroad divide geological bodies into rock mass (rock) and soil mass (soil), which become independent research objects of rock mechanics and soil mechanics respectively. Under the guidance of this trend of thought, the research on expansive rock and expansive soil is They were carried out separately, but with the deepening of the research, various countries have encountered a large number of geological bodies that "rock is not rock, soil is not soil", "rock is not rock, soil is not soil". At the International Symposium held in Athens in 1993, the concept of "soft rock / hard soil", which is different from rock and soil, was proposed, and special research was advocated. For this kind of "soft rock / hard soil", under the test conditions stipulated by different test sp...

Claims

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Application Information

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IPC IPC(8): G01N3/28
Inventor 李志清
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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