Unlock instant, AI-driven research and patent intelligence for your innovation.

Manufacturing method and creep shear test method of mud-containing interlayer rock joint sample

A technology of shear test and rock joint, applied in the field of rock mechanics

Pending Publication Date: 2022-04-12
NORTHEASTERN UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a method that can accurately control the thickness of the mud-containing weak interlayer and reasonably keep the specimen from losing moisture during the creep shear test. Loading to control the thickness of the weak interlayer can solve both problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method and creep shear test method of mud-containing interlayer rock joint sample
  • Manufacturing method and creep shear test method of mud-containing interlayer rock joint sample
  • Manufacturing method and creep shear test method of mud-containing interlayer rock joint sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Collect the tombs sample, weigh some broken mud samples, weigh the drying box after weigh the drying box, then dry after 24 h, then weigh, depending on the obtained difference, the water mud sample content, example The water content is 16%, and then a portion of the sample was dried at 105 degrees. After drying, the XRD test was dried, and the test results were shown in the following table, and the content of clay minerals and water content considered to be needed according to the test results. Containing mud sandwich for water preservation measures, and calibrate the mud layer thickness of the load required by the test, the height of the tester is measured, the height is 100.5mm, first cover the mud layer in the structural surface to clamp the test block The layer can be extruded as a standard, which will then load the load for force by the test, which is preloaded by 20 kN-100 kN to use a variable angle shear. After loading, measure the height of 102.8 mm, calcula...

Embodiment 2

[0032] Step 1: Collect the tombs sample, weigh some broken mud samples, weigh the drying box after weigh the drying box, then dry after 24 h, then weigh, depending on the obtained difference, the water mud sample content, example The aqueous content is 16%, and then a portion of the sample is dried at 105 degrees. After drying, the XRD test is dried. According to the test results, it is considered that the mud interferring measures need to be placed, and the load required by the test required The layer thickness is calibrated, and the height of the tester is measured, the height is 100.5mm, first covering the mud layer in the structural surface to clamp the mud layer to be extruded into the standard, and then use the test required to load the load Here, the 20kN-100KN is selected for the test piece to prepare the test piece to prepare in a variable angle shear. After loading, the height is 102.8 mm, and the difference is calculated, and the thickness of less than 2.3mm is describe...

Embodiment 3

[0040] Step 1: Collect the tombs sample, weigh some broken mud samples, weigh the drying box after weigh the drying box, then dry after 24 h, then weigh, depending on the obtained difference, the water mud sample content, example The aqueous content is 16%, and then a portion of the sample is dried at 105 degrees. After drying, the XRD test is dried. According to the test results, it is considered that the mud interferring measures need to be placed, and the load required by the test required The thickness of the layer is calibrated, and the height of the tester is measured, the height is 100.5 mm, first cover the mud layer in the structural surface to clamp the mud layer to clamp the mud layer to be extruded out, and then use the test desired load method Force, the 20KN-100KN is selected for preloading the test piece using a variable angle shear. After loading, the height is 102.8 mm, and the difference is calculated, and it is 2.3mm, which will be less than 2.3mm mud layer thick...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Heightaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for manufacturing a mud-containing interlayer rock joint sample and a creep shear test of the mud-containing interlayer rock joint sample, and aims to solve the problem of water loss and hardening of an interlayer under conventional conditions in a mud-containing interlayer creep shear test. The water content of the mud layer is kept stable in the long-term creep process; in the creep shear process of a mud-containing interlayer sample, the total height of the sample (calculating the thickness change of a mud interlayer) needs to be accurately measured, and if a large amount of mud interlayer is extruded due to too high normal loading, a design test needs to be modified; in addition, weighing is carried out again after the test to verify the water loss condition of the sample, and if the water loss rate is higher than a set index, the test also needs to be carried out again. The method ensures scientization and standardization of the creep shear test process of the mud-containing interlayer rock joint.

Description

Technical field [0001] The invention belongs to the field of rock mechanics, involving a method of fabricating mud clip rock diaphragm sample and its creep shear test method. [0002] technical background [0003] In actual engineering, the engineered rock mass with weak mezzanine is extremely prone to landslides, so it is necessary to study the creep shear characteristics of the soft interlayer in the water environment. However, existing test methods are often considered separately when the weak mezzanine moisture rate is problematic, and there is no consideration of water loss under long-term test conditions, which cannot be truly reflecting the muddy sandwich in stress with a higher hard rock layer. Role and relative motion process. Therefore, on the one hand, the weak intermediate in the intermediate surface needs to consider different water content, on the other hand, there is a need to maintain a water rate in long-term creep. [0004] For rocks or mud layers selected from t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N3/02G01N3/08G01N3/24G01N1/28
Inventor 刘洪磊杨晨刘溪鸽黄海婷张权云
Owner NORTHEASTERN UNIV