CN104864820B - A kind of slope deforming real-time monitoring system and optical fiber laying method - Google Patents
A kind of slope deforming real-time monitoring system and optical fiber laying method Download PDFInfo
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- CN104864820B CN104864820B CN201510313891.0A CN201510313891A CN104864820B CN 104864820 B CN104864820 B CN 104864820B CN 201510313891 A CN201510313891 A CN 201510313891A CN 104864820 B CN104864820 B CN 104864820B
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- circular hole
- slope
- spheroid
- optical fiber
- sensor fibre
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Abstract
The invention discloses a kind of slope deforming real-time monitoring system and optical fiber laying method, this method to comprise the following steps：Step 1：In side slope N number of circular hole is opened up perpendicular to domatic；N is the integer more than 5；N number of circular hole lines up M shapes or W shapes on side slope face；Step 2：N number of spheroid is provided with a sensor fibre；N number of spheroid is tied up on sensor fibre by connecting line；N number of spheroid is corresponding in turn to the bottom for being placed on described N number of circular hole；Circular hole filler is filled and is compacted；Complete the laying of sensor fibre；The one of described sensor fibre is terminated with pumping pulse laser, and other end is connected to Brillouin optical time-domain reflectometer.The slope deforming real-time monitoring system and optical fiber laying method are easy to implement, and energy side slope carries out detection of caving in.
Description
Technical field
The present invention relates to a kind of slope deforming real-time monitoring system and optical fiber laying method.
Background technology
Railway slope is to ensure to fall road line security on railway line both sides by the trapezoidal slight slope or stoneledge that manually assemble.
The stability of railway slope is directly connected to the safe operation of railway line.With the quick hair of China's high-speed railway in the last few years
Exhibition, there is railway in many places in the whole nation, and China is vast in territory, and the local topography and geomorphology that railway line is passed through is sufficiently complex,
Real-time monitoring to railway slope deformation becomes more and more important, therefore this is also proposed newly to the security for monitoring railway slope
Requirement.
Realize that the real-time monitoring deformed to railway slope is that the one kind risen in recent years effectively monitors with sensor fibre
Means.Sensor fibre monitoring has the advantages of round-the-clock monitoring free of discontinuities, monitor on a large scale.These advantages are traditional monitoring modes
Institute is inaccessiable.But the usual way of optical fiber laying at present is such as：S-shaped, W shapes, intersecting parallels optical fiber paving mode all can only be real
It is now domatic to railway slope to be monitored, can not the inner case of side slope be monitored.
Realize that the monitoring of omnibearing stereo formula has in recent years to geologic structure of the railway slope even below railway line
Some progress.Such as realized using anchor pole connection sensor fibre to the monitoring of geological condition below railway line, utilize layering to lay
The method of optical fiber realizes the three-dimensional monitoring to railway slope.Both the above method has the shortcomings that obvious, anchor pole connection optical fiber
The method being monitored is limited by the quantity of anchor pole and the distribution of anchor pole, monitoring be limited in scope and also side slope monitoring lacks pin
The distribution of anchor pole is limited by property, such as density degree of profile fiber laying.Reached by being layered laying optical fiber to railway side
The method of geologic structure is excessively cumbersome inside slope, implements extremely difficult.
Existing optical fiber paving mode is complicated, and most optical fiber paving modes can only realize the outer sliding prison domatic to railway slope
Survey, monitoring etc. of caving in of side slope can not be carried out.
Therefore, it is necessary to design a kind of slope deforming real-time monitoring system and optical fiber laying method.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of slope deforming real-time monitoring system and optical fiber laying method,
The slope deforming real-time monitoring system and optical fiber laying method are easy to implement, and energy side slope carries out detection of caving in.
The technical solution of invention is as follows：
The optical fiber laying method that a kind of slope deforming monitors in real time, comprises the following steps：
Step 1：In side slope N number of circular hole is opened up perpendicular to domatic；N is the integer more than 5；N number of circular hole is on side slope face
Line up M shapes or W shapes；【Because the service efficiency of optical fiber can be improved by lining up M shapes or W types, i.e., with shorter sensor fibre monitoring more
Big scope, the monitoring of two dimension is realized on domatic.This is the result that engineering cost meets each other half way with monitoring effect】.
Step 2：N number of spheroid is provided with a sensor fibre；N number of spheroid is tied up on sensor fibre by connecting line；
N number of spheroid is corresponding in turn to the bottom for being placed on described N number of circular hole；Circular hole filler is filled and is compacted；Complete sensing
The laying of optical fiber；
The one of described sensor fibre is terminated with pumping pulse laser, and other end is connected to Brillouin light Time Domain Reflectometry
Instrument.
The spacing in two neighboring hole is 0.8~1.2m.Preferably 0.8,0.9,1.0,1.1 or 1.2m.
A diameter of 10-15cm of circular hole, diameter preferred value are 11,12,13,14 or 15cm, and the depth of circular hole is 40-
60cm, preferred value 40,42,45,48 or 50cm.
Spheroid is metal medicine ball, a diameter of 0.8-1cm of medicine ball, preferred value 0.8,0.9 or 1.0cm.【Mainly examine
Consider the stress of sensor fibre and the convenience of constructing operation】.
The length of the line of spheroid and sensor fibre is 0.8-1.2cm.Preferred value is 0.8,0.9,1.0,1.1 or 1.2cm.
【The distance of theoretical upper sphere and sensor fibre is more near better, and such sensor fibre can be sensitiveer when monitoring deformation of slope.Examine
Consider operational issue during construction, it is suitable using the number range】
The spacing in two neighboring hole is 1m, and the depth of circular hole is 50cm, and the length of the line of spheroid and sensor fibre is
1cm, a diameter of 1cm of medicine ball, filler are soil.
A kind of slope deforming real-time monitoring system, including sensor fibre, pumping pulse laser and Brillouin light time domain are anti-
Penetrate instrument；N number of spheroid is connected to by connecting line on described sensor fibre；N is the integer more than 5；
In side slope N number of circular hole is offered perpendicular to domatic；N number of circular hole lines up M shapes or W shapes on side slope face；
N number of spheroid is correspondingly placed at the bottom of described N number of circular hole, is placed with the circular hole after spheroid and optical fiber and is filled
Thing tamps；
Slope deforming real-time monitoring system also includes computer；The reflected light signal warp that Brillouin optical time-domain reflectometer obtains
Cross after optical-electrical converter to form data signal and be sent into computer and handled.
The annexation of the equipment such as computer and pumping pulse laser and Brillouin optical time-domain reflectometer is：Pumping pulse
Laser → sensor fibre → Brillouin optical time-domain reflectometer → optical-electrical converter → data storage → computer → monitoring people
Member
Under normal circumstances, pumping pulse laser sends laser, and laser is propagated in sensor fibre, and Brillouin light time domain is anti-
Penetrate instrument and obtain Brillouin's reflected light signal, optical signal becomes electric signal by optical-electrical converter, and data storage stores information
Get up, computer is then transferred to by USB interface, monitoring situation is sent to monitoring personnel by computer by wireless network；
When slope geological situation changes, the stress of sensor fibre can change, and then the laser in sensor fibre
Defeated situation can change, and the frequency for Brillouin's reflected light that Brillouin optical time-domain reflectometer receives can change, and pass through
After optical-electrical converter, the sensing data that data storage receives can change, and after these data transfers are to computer, calculate
Find that side slope goes wrong, and then sends information to monitoring personnel by wireless network after the software analysis that machine passes through prepackage.
The spacing in two neighboring hole is 0.8~1.2m.
A diameter of 10-15cm of circular hole；The depth of circular hole is 40-60cm；Spheroid is metal medicine ball.
The spacing in two neighboring hole is 1m, and a diameter of 15cm of circular hole, the depth of circular hole is 50cm, spheroid and sensor fibre
The length of line be 1cm, a diameter of 1cm of medicine ball, filler is soil.
Beneficial effect：
The optical fiber laying method of the present invention, change the mode of traditional optical fiber plane laying, perpendicular to railway slope slope
Optical fiber is laid in the way of M shapes or W shapes on the direction in face, being embedded to place most deep in railway slope in optical fiber fastens a reality
Bulbus cordis.Northern area is so not only solved due to sliding problem outside railway slope caused by vegetation deficiency, and solves south
Railway slope of the area caused by level of ground water is too high caves in problem.
By the weight inside side slope connected perpendicular to the domatic optical fiber of railway slope and the optical fiber, realize
Railway slope is caved in danger monitoring and to the overall outer sliding monitoring of railway slope internal slide, railway slope.
The core of this paving mode is, perpendicular to the domatic punching of railway slope, sensor fibre then to be put into hole middle berth
(if so that sensor fibre is domatic perpendicular to railway slope)；Solid stainless perpendicular to the domatic bosom connection one of railway slope
Steel bead, realize the monitoring caved in railway slope；The hole beaten on railway slope is on railway slope is domatic according to M shapes or W
Shape arranges.
This method is based on optical fiber sensing technology, is realized by monitoring the change of Brillouin's reflection light frequency in optical fiber to iron
The monitoring on roadside slope.When railway slope occurs outer sliding, the stress that the sensor fibre positioned at railway slope surface is subject to can occur
Significant change, and then cause the frequency of Brillouin's reflected light in sensor fibre to change, it is possible thereby to realize to railway slope
The monitoring of outer sliding risk.In the bosom connection of sensor fibre embedment railway slope after stainless steel solid bead, in level of ground water
High southern area, when the situation that generation Slope caves in, solid bead can be made perpendicular to railway slope by Action of Gravity Field
The stress that is subject to of sensor fibre significant change occurs, and then the frequency of Brillouin's reflected light in sensor fibre is influenceed, so as to real
The monitoring for risk of now being caved in railway slope.Due to sensor fibre, it is domatic to be perpendicular to railway slope for some, so working as
When being slided inside side slope, it can also cause stress suffered by this part sensor fibre that significant change occurs, and then cause sense light
The frequency of Brillouin's reflected light can change in fibre, so as to realize the monitoring to railway slope internal slide.
This optical fiber laying new method monitored in real time based on the deformation of Fibre Optical Sensor railway slope and monitoring system are mainly had
Three big advantages：
1. connecting stainless steel solid bead on optical fiber, the monitoring for risk of being caved in railway slope is realized.
2. by way of punching, perpendicular to railway slope it is domatic on lay the method for sensor fibre, not only make construction
Become easy, and cause the monitoring of railway slope to become three-dimension monitor by original two dimension monitoring, expand monitoring range,
Improve the accuracy of monitoring.
3. the optical fiber laying method is very flexible.According to different geological conditions, punched by changing on railway slope
Density, so as to control sensor fibre density, can accomplish because of slope suiting measures to different conditions.In the place of geological state difference, sensing can be increased
The density of optical fiber laying, improve the accuracy of monitoring.In the good place of geological state, the close of sensor fibre laying can be reduced
Degree, reduce the cost of railway slope monitoring.The present invention is just no longer limited by quantity and the distribution of anchor pole, so more flexible.
Brief description of the drawings
Fig. 1 is side slope schematic diagram；
Fig. 2 is that side slope punches schematic diagram；
Fig. 3 is that sensor fibre connects weight schematic diagram；
Fig. 4 is that optical fiber lays schematic diagram.
Embodiment
The present invention is described in further details below with reference to the drawings and specific embodiments：
Embodiment 1：
Such as the optical fiber laying method that Fig. 1-4, a kind of slope deforming monitor in real time, comprise the following steps：
Step 1：In side slope N number of circular hole is opened up perpendicular to domatic；N is the integer more than 5；N number of circular hole is on side slope face
Line up M shapes or W shapes；
Step 2：N number of spheroid is provided with a sensor fibre；N number of spheroid is tied up on sensor fibre by connecting line；
N number of spheroid is corresponding in turn to the bottom for being placed on described N number of circular hole；Circular hole filler is filled and is compacted；Complete sensing
The laying of optical fiber；
The one of described sensor fibre is terminated with pumping pulse laser, and other end is connected to Brillouin light Time Domain Reflectometry
Instrument.
The spacing in two neighboring hole is 1m, and a diameter of 15cm of circular hole, the depth of circular hole is 50cm, spheroid and sensor fibre
The length of line be 1cm, filler is soil.
A kind of slope deforming real-time monitoring system, including sensor fibre, pumping pulse laser and Brillouin light time domain are anti-
Penetrate instrument；N number of spheroid is connected to by connecting line on described sensor fibre；N is the integer more than 5；
In side slope N number of circular hole is offered perpendicular to domatic；N number of circular hole lines up M shapes or W shapes on side slope face；
N number of spheroid is correspondingly placed at the bottom of described N number of circular hole, is placed with the circular hole after spheroid and optical fiber and is filled
Thing tamps；
Slope deforming real-time monitoring system also includes computer；The reflected light signal warp that Brillouin optical time-domain reflectometer obtains
Cross after optical-electrical converter to form data signal and be sent into computer and handled.
The annexation of the equipment such as computer and pumping pulse laser and Brillouin optical time-domain reflectometer is：Pumping pulse
Laser → sensor fibre → Brillouin optical time-domain reflectometer → optical-electrical converter → data storage → computer → monitoring people
Member
Under normal circumstances, pumping pulse laser sends laser, and laser is propagated in sensor fibre, and Brillouin light time domain is anti-
Penetrate instrument and obtain Brillouin's reflected light signal, optical signal becomes electric signal by optical-electrical converter, and data storage stores information
Get up, computer is then transferred to by USB interface, monitoring situation is sent to monitoring personnel by computer by wireless network；
When slope geological situation changes, the stress of sensor fibre can change, and then the laser in sensor fibre
Defeated situation can change, and the frequency for Brillouin's reflected light that Brillouin optical time-domain reflectometer receives can change, and pass through
After optical-electrical converter, the sensing data that data storage receives can change, and after these data transfers are to computer, calculate
Find that side slope goes wrong, and then sends information to monitoring personnel by wireless network after the software analysis that machine passes through prepackage.
Spheroid is metal medicine ball.
The spacing in two neighboring hole is 1m, and the depth of a diameter of 15cm circular holes of circular hole is 50cm, spheroid and sensor fibre
The length of line be 1cm, sphere diameter 1cm, filler is soil.
The optical fiber laying of side slope comprises the following steps：
1st, geologic prospect is carried out, it is determined that needing the railway slope region using optical fiber sensing monitoring.
2nd, perpendicular to the domatic hole for making a call to 50 centimetres of depths on railway slope, this some holes will arrange on domatic according to M shapes.Two
Distance between hole on domatic is one meter.(distance between the depth and holes of punching can be according to slope geological structure
Change flexibly changes)
3rd, the solid bead of a stainless steel is connected every three meters on optical fiber.Bead flexible cord is connected with optical fiber, bead
With 1 centimetre of the vertical range of optical fiber.
4th, place the fiber in the hole accomplished fluently, the position for being connected with solid bead is put into the bottom in hole, then will with soil
Fill out and be compacted in hole.
5th, connect pumping pulse laser in one end of sensor fibre, other end connect Brillouin optical time-domain reflectometer and
Computer can equipped with optical fiber monitoring software is realized and railway slope is monitored on-line.
Claims (9)
1. the optical fiber laying method that a kind of slope deforming monitors in real time, it is characterised in that comprise the following steps：
Step 1：In side slope N number of circular hole is opened up perpendicular to domatic；N is the integer more than 5；N number of circular hole lines up M on side slope face
Shape or W shapes；
Step 2：N number of spheroid is provided with a sensor fibre；N number of spheroid is tied up on sensor fibre by connecting line；Will be N number of
Spheroid is corresponding in turn to the bottom for being placed on described N number of circular hole；Circular hole filler is filled and is compacted；Complete sensor fibre
Laying；
The one of described sensor fibre is terminated with pumping pulse laser, and other end is connected to Brillouin optical time-domain reflectometer；
The spacing in two neighboring hole is 0.8~1.2m.
2. the optical fiber laying method that slope deforming according to claim 1 monitors in real time, it is characterised in that the diameter of circular hole
For 10-15cm；The depth of circular hole is 40-60cm.
3. the optical fiber laying method that slope deforming according to claim 1 monitors in real time, it is characterised in that spheroid is metal
Medicine ball, a diameter of 0.8-1cm of medicine ball.
4. the optical fiber laying method that slope deforming according to claim 1 monitors in real time, it is characterised in that spheroid and sensing
The length of the line of optical fiber is 0.8-1.2cm.
5. the optical fiber laying method that the slope deforming according to claim any one of 1-4 monitors in real time, it is characterised in that phase
The spacing in adjacent two holes is 1m, a diameter of 15cm of circular hole, and the depth of circular hole is 50cm, the length of the line of spheroid and sensor fibre
It is soil to spend for 1cm, a diameter of 1cm of medicine ball, filler.
6. a kind of slope deforming real-time monitoring system, it is characterised in that including sensor fibre, pumping pulse laser and Brillouin
Optical time domain reflectometer；N number of spheroid is connected to by connecting line on described sensor fibre；N is the integer more than 5；
In side slope N number of circular hole is offered perpendicular to domatic；N number of circular hole lines up M shapes or W shapes on side slope face；
N number of spheroid is correspondingly placed at the bottom of described N number of circular hole, is placed with the circular hole after spheroid and optical fiber and is filled thing and fills out
It is real；
Also include computer for slope deforming real-time monitoring system；The reflected light signal warp that Brillouin optical time-domain reflectometer obtains
Cross after optical-electrical converter to form data signal and be sent into computer and handled.
7. slope deforming real-time monitoring system according to claim 6, it is characterised in that the spacing in two neighboring hole is
0.8~1.2m.
8. slope deforming real-time monitoring system according to claim 6, it is characterised in that a diameter of 10-15cm of circular hole；
The depth of circular hole is 40-60cm；Spheroid is metal medicine ball.
9. slope deforming real-time monitoring system according to claim 6, it is characterised in that the spacing in two neighboring hole is
1m, a diameter of 15cm of circular hole, the depth of circular hole are 50cm, a diameter of 1cm of medicine ball, the line of spheroid and sensor fibre
Length is 1cm, and filler is soil.
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| CN104864820B true CN104864820B (en) | 2017-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106840016B (en) * | 2017-01-24 | 2020-02-04 | 中国矿业大学(北京) | Safety monitoring and early warning method for loose accumulation body |
| CN107588789B (en) * | 2017-09-05 | 2019-11-01 | 华北电力大学（保定） | A kind of means of defence of distribution type fiber-optic in inside transformer |
| CN108457263A (en) * | 2018-05-03 | 2018-08-28 | 山东理工大学 | A kind of road engineering deformation monitoring equipment based on optical fiber |
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| JP3373188B2 (en) * | 2000-04-05 | 2003-02-04 | 長菱制御システム株式会社 | Displacement measurement system using optical fiber |
| JP2004045135A (en) * | 2002-07-10 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Underground monitoring system and underground monitoring method |
| CN1901418A (en) * | 2006-07-21 | 2007-01-24 | 南京大学 | Method and system for monitoring soil property side slope distributive fiber optic strain |
| CN101738170A (en) * | 2009-12-18 | 2010-06-16 | 北京科技大学 | Distributed fiber sensor for large deformation measurement |
| CN102997861A (en) * | 2012-11-28 | 2013-03-27 | 上海交通大学无锡研究院 | High-speed rail side-slope slide state real-time monitoring system based on distributed optical strain sensing |
| CN203100690U (en) * | 2012-11-28 | 2013-07-31 | 上海交通大学无锡研究院 | Slope real-time monitoring system based on BOTDR (Brillouin Optical Time-domain Reflectometer) |
| CN103453842A (en) * | 2013-09-09 | 2013-12-18 | 中铁西北科学研究院有限公司深圳南方分院 | Method and device for monitoring slope deformation and damage based on optical time domain reflectometer technology |
-
2015
- 2015-06-10 CN CN201510313891.0A patent/CN104864820B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3373188B2 (en) * | 2000-04-05 | 2003-02-04 | 長菱制御システム株式会社 | Displacement measurement system using optical fiber |
| JP2004045135A (en) * | 2002-07-10 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Underground monitoring system and underground monitoring method |
| CN1901418A (en) * | 2006-07-21 | 2007-01-24 | 南京大学 | Method and system for monitoring soil property side slope distributive fiber optic strain |
| CN101738170A (en) * | 2009-12-18 | 2010-06-16 | 北京科技大学 | Distributed fiber sensor for large deformation measurement |
| CN102997861A (en) * | 2012-11-28 | 2013-03-27 | 上海交通大学无锡研究院 | High-speed rail side-slope slide state real-time monitoring system based on distributed optical strain sensing |
| CN203100690U (en) * | 2012-11-28 | 2013-07-31 | 上海交通大学无锡研究院 | Slope real-time monitoring system based on BOTDR (Brillouin Optical Time-domain Reflectometer) |
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