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Hollow inclusion stressometer and measuring method

A hollow inclusion, stress gauge technology, applied in the direction of measuring force, measuring device, instrument, etc., can solve the problem of not being able to accurately determine the complete extrusion of epoxy resin colloid, achieve convenient installation and disassembly, avoid damage, and improve accuracy Effect

Inactive Publication Date: 2019-01-15
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of not being able to accurately determine the complete extrusion of epoxy resin colloids, and to propose a hollow inclusion stress gauge that is convenient for observing the extrusion of colloids when the stress gauge is working.

Method used

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  • Hollow inclusion stressometer and measuring method

Examples

Experimental program
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Embodiment 1

[0027] Using the above-mentioned hollow inclusion stress gauge to test the ground stress includes the following steps:

[0028] (1) According to the required measurement area on the project site, carry out the design of the test plan, determine the position of the measurement point, and design the depth of the measurement point;

[0029] (2) Carry out on-the-spot drilling at the selected in-situ stress measurement points according to the layout plan of the measuring points, and drill a pilot hole with a diameter of 120mm perpendicular to the side of the roadway according to the predetermined inclination and depth of the design plan. The wall of the pilot hole is required to be complete, The hole diameter is consistent, and the phenomenon of drilling bending and hole collapse cannot occur;

[0030] (3) After the depth of the pilot hole reaches the ideal lithology, drill a stress sensor installation hole with a diameter of 100mm at the concentric position at the bottom of the pi...

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Abstract

The invention discloses a stressometer for testing a crustal stress and particularly to a hollow inclusion stressometer for testing the crustal stress. The hollow inclusion stressometer comprises a monitoring module, an epoxy resin cylinder and a guide device. A detection device comprises a video camera placer and a video camera; the video camera placer comprises a hollow upper part and a base; four groups of strain rosettes are uniformly stuck at the periphery of the epoxy resin cylinder; three-dimensional crustal stress is measured through the strain rosettes; and the tapered guide head comprises an adjusting rod and a tapered guide head. As the detection device is arranged at the hollow inclusion stressometer, the flowing condition of colloid in the epoxy resin cylinder under the actionof a traction bar can be monitored in real time, and the colloid in the epoxy resin cylinder are ensured to be extruded completely; and the detection device is convenient to install and can be used for many times, so that the cost is saved.

Description

technical field [0001] The invention relates to the field of ground stress measuring equipment, in particular to a hollow inclusion stress gauge and a measuring method thereof. Background technique [0002] Due to geological structure and other reasons, the crustal material has an internal force effect, and this stress is called geostress. In-situ stress is the natural stress that exists in the earth's crust without being disturbed by engineering. It is also called rock mass initial stress, absolute stress or original rock stress. In a broad sense, it also refers to the stress in the earth. And the stress produced by other factors, the in-situ stress activity will produce or affect the geological structure. Vigorous in-situ stress activities can cause earthquakes, and in-situ stress activities can also affect the physical and chemical properties of rocks and minerals in the earth's crust. Construction without considering in-situ stress often makes production impossible and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22G01D21/00
CPCG01D21/00G01L1/22
Inventor 刘晓彦庞建勇杜传梅王雪松彭月月
Owner ANHUI UNIV OF SCI & TECH
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