CN108241174A - A kind of detection method of buried metal pipe line - Google Patents
A kind of detection method of buried metal pipe line Download PDFInfo
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- CN108241174A CN108241174A CN201711248209.XA CN201711248209A CN108241174A CN 108241174 A CN108241174 A CN 108241174A CN 201711248209 A CN201711248209 A CN 201711248209A CN 108241174 A CN108241174 A CN 108241174A
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- pipeline
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- metal pipe
- pipe line
- buried
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of detection method of buried metal pipe line, step is first to collect former design, construction information, then speculate that range arranges several sections moved towards perpendicular to pipeline in pipeline, section is detected centered on pipeline computed position, vertical its moves towards 5 ~ 8 drillings of arrangement, and all drillings are carried out with the measurement of hole position and aperture absolute altitude；Then the probe of magnetic gradiometer is put into casing, drilling is tentatively detected with magnetic gradient test, later two to three accurate drilling hole are arranged in pipeline section, the accurate drilling hole guides drilling rod test by gravity, until it completely attaches to pipeline surface, then by measuring run of steel come the accurate buried depth for measuring pipeline contact point.The method that the present invention is combined using magnetic gradient test with the positioning of accurate drilling hole, accurately detecting can be carried out to buried metal pipe line, it can effectively solve the problems, such as the positioning depthkeeping of buried metal pipe line in Process of Engineering Construction, the design in region is related to pipeline, construction has positive directive significance.
Description
Technical field
The present invention relates to a kind of method of Underground cable, specifically a kind of energy buried metal pipe line of accurately detecting
Position the detection method of depthkeeping.
Background technology
No-excavation construction method will not cause interruption of communication and path, buried depth can because it does not need to large-scale damage road surface
It is used widely the advantages that adjustment at any time, becomes the main way of City Buried Pipeline laying.However, non-excavating construction skill
The underground utilities of art laying integrate the difficult point of a variety of pipeline detections, and generally at several meters to more than ten meters, some even reaches buried depth
Tens meters.Traditional detection method is difficult the burial place and depth that underground utilities are accurately measured in great burying, this gives
The location technology of buried underground utilities brings new challenge.Inertial gyroscope technology can realize three to great burying pipeline at this stage
Dimension is accurately positioned, however it is using the direct method of measurement in pipe, it is desirable that allows for navigating in pipeline, for can not achieve
The pipeline or in-service pipeline of both ends open can not measure.
Patent Office of the People's Republic of China is in disclosed in 14 days April in 2010, and application No. is " the underground utilities depths of " 200910070811.8 "
The detection method of degree ", it includes step：(1) probe with hydraulic tank is connected, is connected by cable with signal sampler, popped one's head in
Upper connection lining rope；(2) lining rope is worn in plan detection an empty set pipe of buried pipeline well with threading apparatus, end well on the ground is attached
Level disjunction mark point closely is set, the absolute altitude of level datum punctuate is measured with geometrical standard method；(3) level base is measured with hydrostatic sensor
The relative altitude of punctuate drives probe to be moved in empty set pipe, while measure height of the hydrostatic sensor in different location；(4)
It is to calculate to obtain the distance that moves horizontally of measuring point according to Pythagorean theorem；(5) summarize the pipeline buried depth depth for obtaining different distance.It is this
Method can not solve the detection of the underground utilities of no pre-buried empty set pipe.
Patent Office of the People's Republic of China is in disclosed on 2 3rd, 2016, and application No. is " burying greatly small-bore for " 201510669577.6 "
Deep underground utilities detection method ", it is characterised in that：Kicker magnet is placed in underground utilities to be measured, using guide rod by the master
Dynamic magnetic source is sent to region to be measured, is drilled later in the underground utilities side in region to be measured, and magnetic sensing is placed in the drilling
Device analyzes the accurate position so as to judge the underground utilities according to obtained magnetic field data to measure the magnetic field of the active magnetic source
Confidence ceases.This method can not solve to can not achieve the detection of the pipeline or in-service pipeline of both ends open.
Invention content
It is an object of the invention in view of the above-mentioned defects in the prior art and insufficient, a kind of energy accurately detecting is provided for people
The detection method of buried metal pipe line positioning depthkeeping.
The technical solution used in the present invention is to achieve the above object：The detection method of the buried metal pipe line, it is wrapped
Include following steps：
The first step：Former design, construction information are collected, determines the diameter of pipeline, thus it is speculated that Position Approximate, trend and buried depth；
Second step：Speculate that range arranges several sections moved towards perpendicular to pipeline in pipeline, detection section is speculated with pipeline
Centered on position, vertical its moves towards 5 ~ 8 drillings of arrangement, and drilling depth deepens 5 to 15 again on the basis of pipeline speculates buried depth
Rice, the principle that drilling sequences execution is approached from outer lateral center when some drills out the reflection of existing metal pipe line, stop boring
Hole, after the completion of detection operations；
Third walks, in the drilling of reflection that the casing insertion of tube bottom closing metal pipe line occurs, the injected clear water in setting of casing,
The probe of magnetic gradiometer is put into casing, up measures the magnetic ladder of each depth point successively with the interval of 0.1m since bottom hole
Angle value, according to the drilling magnetic gradient value change curve of cross sections, the preliminary plan-position for grasping pipeline and buried depth, detection operations
After the completion, all drillings are carried out with the measurement of hole position and aperture absolute altitude；
4th step according to preliminary result of detection, arranges two to three accurate drilling hole, which passes through in pipeline section
Gravity guides drilling rod test, using extrusion compressing drill bit downwards until completely attaching to pipeline surface, then by measuring drilling rod
Length carrys out the accurate buried depth for measuring pipeline contact point；
5th step is positioned to fruit in known pipeline diameter, by using 2 points on pipeline of accurate drilling hole, can fit
Round pipeline simultaneously determines its tube top plan-position and elevation.
The drilling uses water jetting pore-forming, i.e., punching forms repeatedly under effect of water pressure.
The spacing of wells D1 is less than or equal to the diameter of pipeline.
The space D 2 of the accurate drilling hole is less than or equal to the radius of pipeline.
It is fixed at casing joint using nonmagnetic screw.
The probe of the magnetic gradiometer up measures the magnetic ladder of each depth point successively since bottom hole with the interval of 0.1m
Angle value, the magnetic gradient value that arrival Kong Dinghou measures each depth point down successively with the interval of 0.1m still further below are verified.
The side of the drilling rod is provided with two total powerstations, centered on drilling rod, is mutually an angle of 90 degrees, in entire boring procedure
In, the verticality of real time correction drilling rod.
The drilling rod bottom is provided with plastics drill bit.
The method that the present invention is combined using magnetic gradient test with the positioning of accurate drilling hole, can carry out buried metal pipe line
Accurately detecting can effectively solve the problems, such as the positioning depthkeeping of buried metal pipe line in Process of Engineering Construction, be related to region to pipeline
Design, construction have positive directive significance.
Description of the drawings
The bore position that Fig. 1 is the present invention arranges schematic diagram.
Fig. 2 is the accurate drilling hole location arrangements schematic diagram of the present invention.
Specific embodiment
The present invention is a kind of detection method of buried metal pipe line, it includes the following steps：
The first step：Former design, construction information are collected, determines the diameter of pipeline 1, thus it is speculated that Position Approximate, trend and buried depth；
Second step：As shown in Figure 1, speculating that range arranges several sections moved towards perpendicular to pipeline 1 in pipeline 1, section is detected
Centered on 1 computed position of pipeline, vertical its moves towards 5 ~ 8 drillings 2 of arrangement.The drilling 2 uses water jetting pore-forming, i.e.,
Punching forms repeatedly under effect of water pressure, even if touching pipeline 1, will not destroy metal pipe line 1 and its outsourcing erosion resistant coating.It bores
2 depth of hole deepens 5 to 15 meters again on the basis of pipeline 1 speculates buried depth, and the spacing of wells D1 is less than or equal to pipeline 1
Diameter, it is ensured that pipeline 1 can be detected.To avoid being drilled directly into pipeline 1, drilling sequences strict implement is approached from outer lateral center
Principle, when the reflection of metal pipe line 1 occurs in some drilling 2, stopping drilling, is detected immediately.
Third walks, in the drilling 2 of reflection that the casing insertion of tube bottom closing metal pipe line 1 occurs, side setting of casing marginal not
Enter clear water, to prevent casing from floating.It is fixed at casing joint using nonmagnetic screw, avoids generating interference during detection.Treat casing
After reaching 2 bottoms of drilling, the probe of magnetic gradiometer is put into casing, is up measured successively with the interval of 0.1m since bottom hole
The magnetic gradient value of each depth point, according to the 2 magnetic gradient value change curve of drilling of cross sections, the preliminary plane for grasping pipeline 1
Position and buried depth.The magnetic gradient value that arrival Kong Dinghou measures each depth point down successively with the interval of 0.1m still further below is tested
Card.After the completion of detection operations, all drillings 2 are carried out with the measurement of hole position and aperture absolute altitude.
As shown in Fig. 2, according to preliminary result of detection, two to three accurate drilling hole 3 are arranged in 1 section of pipeline for 4th step,
The space D 2 of the accurate drilling hole 3 is less than or equal to the radius of pipeline 1, make accurate drilling hole 3 can test to pipeline 1
On same section.The accurate drilling hole 3 guides drilling rod test by gravity, using extrusion compressing drill bit downwards until connecing completely
Contact 1 surface of pipeline, then by measuring run of steel come the accurate buried depth for measuring 1 contact point of pipeline.The drilling rod bottom is set
Plastics drill bit is equipped with, drill bit pushing is avoided to cause to damage to pipeline 1.The side of the drilling rod is provided with two total powerstations, to bore
Centered on bar, an angle of 90 degrees is mutually, in entire boring procedure, the verticality of real time correction drilling rod.
5th step positions achievement in 1 diameter of known pipeline, by using 2 points on pipeline 1 of accurate drilling hole 3, can be with
It fits round pipeline 1 and determines its tube top plan-position and elevation.
The present invention positions the method that is combined using magnetic gradient test with accurate drilling hole 3, can to buried metal pipe line 1 into
Row accurately detecting, can effectively solve the problems, such as the positioning depthkeeping of buried metal pipe line 1 in Process of Engineering Construction, be related to area to pipeline 1
Design, the construction in domain have positive directive significance.
Claims (8)
1. a kind of detection method of buried metal pipe line, it is characterised in that it includes the following steps：
The first step：Former design, construction information are collected, determines pipeline（1）Diameter, thus it is speculated that Position Approximate, trend and buried depth；
Second step：In pipeline（1）Speculate that range arranges several perpendicular to pipeline（1）The section of trend, detection section is with pipe
Line（1）Centered on computed position, vertical its moves towards 5 ~ 8 drillings of arrangement（2）, drilling（2）Depth is in pipeline（1）Speculate buried depth
On the basis of deepen 5 to 15 meters again, the principle that drilling sequences execution is approached from outer lateral center, when some drilling（2）Go out cash
Belong to pipeline（1）Reflection when, stop drilling；
Third walks, and the casing insertion of tube bottom closing metal pipe line occurs（1）Reflection drilling（2）In, side setting of casing marginal not
Enter clear water, the probe of magnetic gradiometer is put into casing, each depth is up measured with the interval of 0.1m successively since bottom hole
The magnetic gradient value of point, according to the drilling of cross sections（2）Magnetic gradient value change curve, tentatively grasps pipeline（1）Plan-position
And buried depth, after the completion of detection operations, to all drillings（2）Carry out the measurement of hole position and aperture absolute altitude；
4th step, according to preliminary result of detection, in pipeline（1）Section arranges two to three accurate drilling hole（3）, the accurate probing
Hole（3）Drilling rod test is guided by gravity, using extrusion compressing drill bit downwards until completely attaching to pipeline（1）Surface, then
Accurately pipeline is measured by measuring run of steel（1）The buried depth of contact point；
5th step is in known pipeline（1）During diameter, by using pipeline（1）Upper 2 points of accurate drilling hole（3）Achievement is positioned, it can
To fit round pipeline（1）And determine its tube top plan-position and elevation.
2. the detection method of buried metal pipe line according to claim 1, it is characterised in that the drilling（2）Using water
Method pore-forming is rushed, i.e., punching forms repeatedly under effect of water pressure.
3. the detection method of buried metal pipe line according to claim 1, it is characterised in that the spacing of wells D1 is small
In or equal to pipeline（1）Diameter.
4. the detection method of buried metal pipe line according to claim 1, it is characterised in that the accurate drilling hole（3）
Space D 2 be less than or equal to pipeline（1）Radius.
5. the detection method of buried metal pipe line according to claim 1, it is characterised in that using no magnetic at casing joint
Property screw is fixed.
6. the detection method of buried metal pipe line according to claim 1, it is characterised in that the probe of the magnetic gradiometer
It up measures the magnetic gradient value of each depth point successively with the interval of 0.1m since bottom hole, reaches Kong Dinghou still further below with 0.1m
Interval measure the magnetic gradient value of each depth point down successively and verified.
7. according to the detection method of any buried metal pipe lines of claim 1-6, it is characterised in that the side of the drilling rod
While being provided with two total powerstations, centered on drilling rod, an angle of 90 degrees is mutually, in entire boring procedure, real time correction drilling rod hangs down
Straight degree.
8. according to the detection method of any buried metal pipe lines of claim 1-6, it is characterised in that the drilling rod bottom
Portion is provided with plastics drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248209.XA CN108241174A (en) | 2017-12-01 | 2017-12-01 | A kind of detection method of buried metal pipe line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248209.XA CN108241174A (en) | 2017-12-01 | 2017-12-01 | A kind of detection method of buried metal pipe line |
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| CN108241174A true CN108241174A (en) | 2018-07-03 |
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| CN201711248209.XA Pending CN108241174A (en) | 2017-12-01 | 2017-12-01 | A kind of detection method of buried metal pipe line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596768A (en) * | 2019-08-09 | 2019-12-20 | 中铁十六局集团地铁工程有限公司 | Detection method for deeply-buried high-pressure gas pipeline |
| CN110595367A (en) * | 2019-09-26 | 2019-12-20 | 上海勘察设计研究院(集团)有限公司 | Method for finely detecting deformation and displacement of existing tunnel structure |
Citations (1)
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| CN102662198A (en) * | 2012-05-18 | 2012-09-12 | 上海市城市建设设计研究总院 | Water jetting geophysical prospecting construction process applying drill special for geophysical prospecting |
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2017
- 2017-12-01 CN CN201711248209.XA patent/CN108241174A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662198A (en) * | 2012-05-18 | 2012-09-12 | 上海市城市建设设计研究总院 | Water jetting geophysical prospecting construction process applying drill special for geophysical prospecting |
Non-Patent Citations (5)
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| A.P.莫泽: "《地下管设计》", 30 June 2003, 机械工业出版社 * |
| 何亚敏: "磁梯度法在上海轨道交通14号线深埋管线探测中的应用研究", 《工程勘察》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596768A (en) * | 2019-08-09 | 2019-12-20 | 中铁十六局集团地铁工程有限公司 | Detection method for deeply-buried high-pressure gas pipeline |
| CN110595367A (en) * | 2019-09-26 | 2019-12-20 | 上海勘察设计研究院(集团)有限公司 | Method for finely detecting deformation and displacement of existing tunnel structure |
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Application publication date: 20180703 |
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