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Rock three-dimensional stress monitoring system and measuring device

A three-dimensional stress and monitoring system technology, applied in the field of monitoring systems, can solve problems such as high power consumption, affecting the accuracy and practicability of engineering monitoring numbers, time-consuming and labor-intensive, and achieve a reasonable design effect

Inactive Publication Date: 2015-05-06
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

Moreover, the hollow inclusion stress gauge generally needs to be connected with a long cable to connect with the acquisition instrument, which is prone to signal interference. Due to the long-term connection, the power consumption is large, and the high heat dissipation will have a thermal effect on the strain gauge. The accuracy and practicability of engineering monitoring figures
Time-consuming and labor-intensive digital collection, which is easily disturbed by many external factors, has been paid more and more attention by more and more people.

Method used

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  • Rock three-dimensional stress monitoring system and measuring device

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Embodiment approach

[0008] As an embodiment of the present invention, see figure 1 , The present invention includes a local digital acquisition system and a hollow envelop body stress gauge. The stress meter of the hollow package body adopts the stress relief method of the sleeve hole to monitor. By encapsulating the hollow body stress gauge on the wall of a hollow tube with a known elastic modulus. Fix the stress gauge in the drill hole with epoxy resin, and then monitor the strain response during the stress relief process of the drill sleeve core. The acquisition system is connected to the strain gauges through 16 cables. The hollow enclave stress gauge collects the electrical signals of the surrounding rock strain changes and transmits them to the local digital acquisition system. In the local digital acquisition system, the spatial stress change analysis system and the expert system automatically analyze the internal spatial stress changes and error analysis of the rock mass. The local digi...

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Abstract

The invention relates to a rock three-dimensional stress monitoring system and measuring device. The rock three-dimensional stress monitoring system and measuring device comprises a local digital collecting system and a hollow inclusion stress detector. The hollow inclusion stress detector is fixed inside the drill hole of an object to be measured; the local digital collecting system obtains the strain response of the hollow inclusion stress detector during the stress relieving process of a drilling core. The rock three-dimensional stress monitoring system and measuring device has the advantages of achieving synchronization of digital collection and digital measurement, and by combining a collector with the hollow inclusion stress detector, saving operation through a microcomputer terminal, thereby reducing the thermal effect influence on the stress detector, achieving spatial three-dimensional stress computation and saving time and labor.

Description

Technical field [0001] The invention designs a monitoring system, in particular to a rock mass three-dimensional stress monitoring system and measuring device. Background technique [0002] At present, in the rock three-dimensional stress monitoring system, it is necessary for the staff to collect the numbers on the spot with the digital acquisition instrument regularly or irregularly. In addition, the hollow package body stress gauge generally needs to be connected with a long cable to connect with the acquisition instrument, which is prone to signal interference, etc., due to long-term connection, the power consumption is large, and the high heat dissipation will have a thermal effect on the stress gauge. The accuracy and practicability of engineering monitoring figures are improved. Time-consuming and laborious digital collection, and the collection of digital data is easily interfered by many external factors, which has attracted more and more people's attention. Summary of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/00
Inventor 乔兰李远
Owner UNIV OF SCI & TECH BEIJING
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