Supercharge Your Innovation With Domain-Expert AI Agents!

Method and device for testing rock-soil thermo-physical parameter in penetration type in-situ layered mode

A technology of thermal physical parameters and layered testing, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc. It can solve the problem of loosening of samples after unloading and springback, damage to the structure of rock and soil, and untrue test data, etc. problems, to achieve the effect of reducing test costs

Inactive Publication Date: 2011-05-25
ZHEJIANG SCI-TECH UNIV
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of sampling the rock and soil from the site to the laboratory, there are serious problems as follows: first, the structure of the rock and soil is destroyed during the sampling and transportation process; The third is that the deep rock and soil mass is taken above the ground, and the sample taken out becomes loose after unloading and rebounding; the fourth is that due to the volume limitation of the test soil sample, it is difficult to satisfy the assumption that the boundary between the linear heat source and the measured rock and soil mass is infinite
Due to the limitation of the soil sample volume in the indoor test, the heat from the line heat source will quickly affect the soil sample boundary, resulting in untrue test data

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
  • Method and device for testing rock-soil thermo-physical parameter in penetration type in-situ layered mode
  • Method and device for testing rock-soil thermo-physical parameter in penetration type in-situ layered mode
  • Method and device for testing rock-soil thermo-physical parameter in penetration type in-situ layered mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Embodiment 1. A device for penetrating in-situ layered testing of geotechnical parameters, including an in-situ probe 2 with a threaded joint 1 and an in-situ probe 3. The in-situ probe 3 is located in the in-situ probe 2 below. The in-situ probe 3 includes a probe tube 12 and a needle point 13. The outer surface of the probe tube 12 is a smooth surface, and the needle point 13 is fixedly connected to the bottom end of the probe tube 12. The length L1 of the probe tube 12 is the outer surface of the probe tube 12. 30-120 times the diameter D, that is, the length-to-diameter ratio of the probe tube 12 is 30-120, and the sharp angle of the needle tip 13 can generally be 30-60 degrees. The wall thickness of the probe tube 12 is about 1 / 12 of the diameter of the probe tube 12 . The probe tube 12 is made of high thermal conductivity material (such as stainless steel material).

[0045] In the inner cavity 9 of the probe tube 12, a heating wire 6 and two thermocouples 8 as t...

Embodiment 2

[0049] Embodiment 2, utilize the method for the in-situ delamination test rock and soil thermophysical property parameter that the device described in embodiment 1 is carried out, comprise the following steps successively:

[0050] 1) Identify the name of the measured rock-soil layer 5 by taking soil from the geotechnical engineering reconnaissance earth taker, and determine the soil layer properties and embedding depth of the measured rock-soil layer 5 . Specifically, the geological drill bit on the drilling rig is drilled into the rock-soil layer 5 to be tested from the surface, and at the same time, the name of the rock-soil layer 5 to be tested is identified by the soil fetcher, thereby creating a passage between the ground and the rock-soil layer 5 to be measured. (i.e. soil extraction hole).

[0051] The above content is the routine content of geotechnical engineering investigation.

[0052] In the following steps, the above-mentioned soil-borrowing holes were used as t...

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

No PUM Login to View More

Abstract

The invention discloses a device for testing a rock-soil thermo-physical parameter in a penetration type in-situ layered mode. The device comprises an in-situ probe (2) with a threaded joint (1), wherein an in-situ probe (3) is positioned below the in-situ probe (2) and comprises a probe pin tube (12) and a pin tip (13); the pin tip (13) is fixedly connected with the bottom of the probe pin tube (12); the outer surface of the probe pin tube (12) is a smooth surface; a heating strip (6) and a thermocouple (8) are arranged in a cavity (9) of the probe pin tube (12) respectively; filler (11) is also filled in the cavity (9) of the probe pin tube (12); the top end of the probe pin tube (12) is fixedly connected with the in-situ probe (2); a heating wire (10) is connected with the heating strip (6); and a temperature receiving wire (7) is connected with the thermocouple (8). The invention also provides a method for testing the rock-soil thermo-physical parameter by using the device. By the method and the device, the thermal conductivity coefficient of a tested rock-soil layer can be acquired.

Description

technical field [0001] The invention relates to a method for in-situ testing of thermophysical parameters of rock and soil, in particular to a method for on-site testing of thermophysical parameters of rock and soil layers with any embedded depth by means of penetration. Background technique [0002] Currently there is no method that can test the thermophysical parameters of rock and soil layers at any buried depth in situ. The existing method for testing the thermal properties of layered rock and soil is as follows: sampling rock and soil with different buried depths in the laboratory, and then performing a thermal physical property test on the taken out rock and soil samples, so as to obtain corresponding parameters. [0003] In the process of sampling rock and soil from the site to the laboratory, there are serious problems as follows: first, the structure of the rock and soil is destroyed during the sampling and transportation process; The third is that the deep rock an...

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): E02D1/00
Inventor 马海龙马宇飞
Owner ZHEJIANG SCI-TECH UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com