A discussion on the key technical problem in monitoring and predicting sinkhole with optical fiber sensing (BOTDR) technique

MENG Yan; GUAN Zhen-de

doi:10.3969/j.issn.1001-4810.2011.02.011

Volume 30 Issue 2

Jun. 2011

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MENG Yan, GUAN Zhen-de. A discussion on the key technical problem in monitoring and predicting sinkhole with optical fiber sensing (BOTDR) technique[J]. CARSOLOGICA SINICA, 2011, 30(2): 187-192. doi: 10.3969/j.issn.1001-4810.2011.02.011

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MENG Yan, GUAN Zhen-de. A discussion on the key technical problem in monitoring and predicting sinkhole with optical fiber sensing (BOTDR) technique[J]. CARSOLOGICA SINICA, 2011, 30(2): 187-192. doi: 10.3969/j.issn.1001-4810.2011.02.011

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A discussion on the key technical problem in monitoring and predicting sinkhole with optical fiber sensing (BOTDR) technique

doi: 10.3969/j.issn.1001-4810.2011.02.011

Institute of Karst Geology, CAGS

Received Date: 2011-03-07
Publish Date: 2011-06-25

Abstract

Abstract

The key technical problem in monitoring and predicting of the sinkhole with optical fiber sensing technology (BOTDR) are summarized and analyzed based on the features of the sinkhole and the principle of BOTDR. The study mainly includes temperature effect, optical fiber laying and model building. The optical fiber deformation by temperature effect can be eliminated by compensating and amendments of the additional temperature sensor. The deform in same pace of optical and soil can be solved by the laying way, and the jointing compound and the proportion are the key factors. The core of monitoring and predicting of the sinkhole by optical fiber sensing technique is to build a strain relation model between optical and soil, it can be achieved by the simulation experiment in the lab.
- sinkhole,
- BOTDR,
- monitoring and predicting

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A discussion on the key technical problem in monitoring and predicting sinkhole with optical fiber sensing (BOTDR) technique

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