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Method and device for performing tunnel advance borehole penetration-scribing test by using probe

An advanced drilling and penetrating technology, which is applied in the direction of measuring devices, applying stable tension/pressure to test the strength of materials, mining devices, etc., can solve the problem of scattered, unable to directly use drilling, and unable to obtain continuous evolution profiles of surrounding rock strength and other problems, to achieve the effect of convenient operation and easy engineering field application

Active Publication Date: 2022-04-15
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The in-situ test generally adopts the in-situ penetration method, which is currently mainly used for the measurement of the surface of the surrounding rock and cannot be directly used in the borehole, and the penetration test is mainly a scattered measurement, and the continuous evolution profile of the strength of the surrounding rock cannot be obtained.

Method used

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  • Method and device for performing tunnel advance borehole penetration-scribing test by using probe
  • Method and device for performing tunnel advance borehole penetration-scribing test by using probe
  • Method and device for performing tunnel advance borehole penetration-scribing test by using probe

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Embodiment 1

[0032] Such as figure 1 , 2 As shown, the embodiment of the present invention provides a probe for tunnel advance drilling penetration-marking test, including an axial loading device and a radial loading device.

[0033] The radial loading device is used for applying radial pressure to the borehole walls at different depths and at different positions, and collecting radial pressure and radial displacement data.

[0034] The axial loading device is used to apply axial pressure to the radial loading device under the condition of applying radial pressure to the borehole wall, and collect axial pressure and axial displacement data.

[0035] During the penetration test using the probe with the above structure, it can be placed at any depth position of the borehole according to preset, and the radial loading device can exert pressure on the borehole wall along the radial direction of the borehole. Among them, the applied radial pressure can be loaded step by step or constant. By a...

Embodiment 2

[0097] An embodiment of the present invention provides a device for tunnel advance drilling penetration-marking test, including the probe described in Embodiment 1, and also includes a pressurizing device and a data acquisition device, the pressurizing device is used for The axial loading device and radial loading device in the probe provide pressure and recovery pressure; the data acquisition device is used to collect the axial displacement sensor, axial pressure sensor, radial displacement sensor and radial pressure in the probe sensor data.

[0098] Wherein, the probe is connected with the pressurizing device and the data acquisition device through pipelines, electric wires and / or data lines to realize liquid flow, power supply and data transmission.

[0099] The specific structure of the probe and the method of using the probe to perform the penetration test and the scratch test can refer to the description in the first embodiment, and will not be repeated here.

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Abstract

The invention discloses a method and a device for performing tunnel advance borehole penetration-scribing test by using a probe. The probe comprises an axial loading device and a radial loading device. The method comprises the following steps: placing probes at different set depths of a drill hole; the radial loading device is pressurized to radially apply pressure to the hole wall for a penetration test; pressurizing the axial loading device to push the radial loading device in a radial pressure applying state to move along the axial direction of the drill hole to carry out a scribing test; and releasing the pressure of the radial loading device and the axial loading device, rotating the probe by a set angle by taking the center of the drill hole as an axis, and repeating the penetration test and the scribing test. In the rock in-situ testing process, penetration and scribing tests of the advance drill hole in different depths and in different directions can be completed, in-situ monitoring of stress fields and displacement fields in the axial direction and the radial direction of the advance drill hole is achieved, the whole process is convenient and rapid to operate and easy to apply in an engineering field, and the economical efficiency, the reliability and the operability of the field test are achieved.

Description

technical field [0001] The invention relates to the technical field of advanced detection of rock tunnels and analysis of rock mass materials, in particular to a method and a device for conducting advanced drilling penetration-marking tests of tunnels by using probes. Background technique [0002] With the rapid development of various rock engineering constructions, a large number of rock tunnels (roadways) including highway (railway) road tunnels, water conveyance tunnels and mine roadways have emerged, and there is a trend of gradually shifting to the deep. Deep tunnels (roadways) have complex topography and large buried depths. Affected by the heterogeneity of rock materials, tunnels are prone to accidents such as landslides, water and mud inrush, or rockbursts during construction, which seriously affect the construction progress and personal safety. The current engineering exploration methods mainly use direct exploration, drilling, penetrating exploration and geophysica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/02E21F17/18
Inventor 杨柳缪澄宇孟思炜王炯姜铭朱明群
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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