Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Landslide monitoring system

A monitoring system and inclinometer technology, applied in measurement devices, instruments, optical devices, etc., can solve the problem of not solving the problem of effective protection of the sensing fiber sensitivity of the sensing fiber, not fully excavating and releasing the huge potential of fiber sensing, It is difficult to meet the long-term real-time monitoring requirements of landslides and other problems, so as to achieve the effect of promoting use, flexible use, and reducing labor intensity and danger

Inactive Publication Date: 2013-06-05
XIAN JINHE OPTICAL TECH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional deep displacement monitoring of landslides mainly uses multi-point displacement meters and borehole inclinometers. These two methods are not easy to carry out long-distance detection and require manual on-site monitoring. The real-time performance is poor, and it is difficult to meet the long-term real-time monitoring requirements for landslides. Manual on-site monitoring also has great risks when it is in a critical state
Another method is to measure the deep displacement of the landslide by using the characteristic that the impedance characteristics of the coaxial cable will change with the cable deformation. Due to the relationship between the electromagnetic wave reflection signal caused by the impedance change of the coaxial cable and the cable deformation, there is no corresponding method. Theoretical basis, so the amount of deformation can only be calculated by the fitting formula of the indoor repeated test results, which is highly probable, and it is not easy to detect remotely, thus limiting its scope of use
The existing distributed optical fiber sensing technology is also tentatively applied to landslide monitoring, such as the use of optical time domain reflectometry (OTDR for short) and Brillouin backscattering technology (BOTDR for short). The contradiction between the sensitivity and the effective protection of the sensing fiber has not been widely used. In addition, the solution based on Brillouin backscattering technology has also become an important factor limiting its application due to the high cost of equipment.
The application prospect of optical fiber sensing technology in landslide monitoring is optimistic by many scholars, but the existing technical solutions have not fully tapped and released the huge potential of optical fiber sensing. These are problems that need to be solved urgently

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
  • Landslide monitoring system
  • Landslide monitoring system
  • Landslide monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 , figure 2 , image 3 , Figure 4A landslide monitoring system shown includes an inclinometer tube 12 inserted into the landslide, the inclinometer tube 12 passes through the potential sliding surface 15 of the landslide and extends into the borehole below the surface of the bedrock mass 16, the inclinometer A curved test channel for the signal optical fiber to pass through is continuously arranged in the tube 12. The curved test channel includes a cylinder 36 and a plurality of A-side deformation teeth 4 continuously arranged on the upper and lower opposite sides of the cylinder 36. -1 and a plurality of B-side deformed teeth 4-2, a plurality of A-side deformed teeth 4-1 and a plurality of B-side deformed teeth 4-2 are arranged in a staggered manner, and the heads of the two are formed for one or more The curved channel through which the signal fiber passes, the A-side deformation tooth 4-1 and the B-side deformation tooth 4-2 are correspondingly a...

Embodiment 2

[0054] Such as Figure 5 , Figure 6 As shown, in this embodiment, the difference from Embodiment 1 is that a light reflection device 1 30 is arranged at the end of the signal fiber 2 34, and the light source-optical power meter 26 includes a 1×2 optical splitter 23, The third transmission fiber 17 is connected to the input end of the 1×2 optical splitter 23 , and the output end of the 1×2 optical splitter 23 is respectively connected to the light source 24 and the optical power meter 25 . The process is: the optical signal sent by the light source 24 enters the signal optical fiber 2 34 through the 1×2 optical splitter 23, the transmission optical fiber 3 17, and the optical cable 1, and is returned by the optical reflection device 1 30 at the end of the signal optical fiber 2 34, and Enter the optical power meter 25 through the optical cable 1, the transmission optical fiber 3 17, and the 1×2 optical splitter 23 to complete the test. In the whole process, the optical signal...

Embodiment 3

[0056] Such as Figure 7 As shown, in this embodiment, the difference from Embodiment 2 is that a plurality of light reflection devices 2 38 are arranged on the signal optical fiber 1 33, and the optical time domain reflectometer 18 can detect each light reflection device 2 38 , and calculate the difference in the reflected light power of two adjacent light reflecting devices 2 38 to obtain the bending situation between the positions of the two light reflecting devices 2 38, thereby obtaining the position and displacement of the deep part of the landslide. In this embodiment, the structures, connections and working principles of the remaining parts are the same as those in Embodiment 2.

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 landslide monitoring system. The landslide monitoring system comprises an inclinometer pipe inserted into a landslide, a power supply system and a first wireless transceiver module, wherein the inclinometer pipe penetrates through a potential sliding surface of the landslide and extends into a drilling hole below a surface of a bed rock body; the inclinometer pipe is internally and continuously provided with curve-shaped testing channels allowing signal optical fibers to pass through; each curve-shaped testing channel comprises multiple A-side deformed teeth and multiple B-side deformed teeth; the testing unit comprises a light time domain reflectometer and a light source-light power meter; one end of a first signal optical fiber is connected to the light time domain reflectometer; a second signal optical fiber is connected to the light source-light power meter; the power supply system comprises a battery pack; and the first wireless transceiver module is wirelessly connected to a second wireless transceiver module. The landslide monitoring system has a simple structure, a rational design, convenience in processing and manufacturing, low cost, a flexible use way, high sensitivity, good use effects, a high practical value, strong adaptability, and capabilities of realizing long-distance monitoring and monitoring change of depth displacement of the landslide efficiently.

Description

technical field [0001] The invention relates to a landslide monitoring system. Background technique [0002] Landslide refers to the phenomenon that the soil and rock mass on the slope slides down the slope in whole or in part along a certain weak surface or belt under the action of gravity due to the influence of various factors. Landslide disaster is one of the most dangerous geological disasters. Due to the difference in geological conditions, there are many types and phenomena of landslides, which also creates a relatively high difficulty for the monitoring of landslides. The monitoring indicators of landslides include geological macroscopic trace monitoring indicators, ground displacement monitoring indicators, deep displacement monitoring indicators, inducing factors monitoring indicators, groundwater dynamic monitoring indicators and geophysical field monitoring indicators. Among them, the deep displacement monitoring can directly reflect the multi-layer deformation...

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): G01B11/02G01B11/22
Inventor 杜兵
Owner XIAN JINHE OPTICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com