CN103925894A - Device for measuring length of slurry spraying pipe in grout hole - Google Patents
Device for measuring length of slurry spraying pipe in grout hole Download PDFInfo
- Publication number
- CN103925894A CN103925894A CN201310013264.6A CN201310013264A CN103925894A CN 103925894 A CN103925894 A CN 103925894A CN 201310013264 A CN201310013264 A CN 201310013264A CN 103925894 A CN103925894 A CN 103925894A
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- China
- Prior art keywords
- grout
- jetting pipe
- hole
- length
- spraying pipe
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a device for measuring the length of a slurry spraying pipe in a grout hole. A sensor is fixed to the top of the slurry spraying pipe and connected with a collection and analysis device through a data line. An automatic excitation source is arranged in the position above the slurry spraying pipe. The device is simple in measurement procedure, high in measurement speed and accurate in data and can not influence grouting quality or cause drilling accident in the hole.
Description
Technical field
Grout-jetting pipe length-measuring appliance in a kind of grout hole of the present invention, relates to basement rock or filling concrete slurry technical field.
Background technology
According to grouting regulation and stipulation: " grout curtain, consolidation grouting hole in Grout-jetting pipe export must not be greater than 50cm at the bottom of hole ", exceeding this standard is violations of rules and regulations, can have influence on grouting quality.For a long time, measuring the length of Grout-jetting pipe in grout hole has two kinds of methods (comprising concrete grouting hole): the one, and measure by root with tape measure, then be installed in hole by root successively; The 2nd, in filling process, suspend grouting, the Grout-jetting pipe being installed in hole is all proposed, after having measured by root with tape measure, transfer and be installed in hole by root again.The former constructs loaded down with trivial details, and the latter is used for the selective examination of quality testing department.Stopping grouting spot-check, the problem of bringing is: " proposition " and " transferring installation " needs a large amount of time, not only strengthen operator's labour intensity, affect work efficiency, and likely cause for a long time slurries to solidify because wasting time can not to continue the accident of grouting, especially the hole depth more than hundred meters runs into and spot-check while requirement, all the more so.
The present invention's " Grout-jetting pipe length method in site measurement hole ", be mainly and solve the latter, the selective examination that is quality testing department exists " do not propose, transfer installation " state under, how to measure the length of Grout-jetting pipe in grout hole, and make its operation simple, quick, data accurately do not affect grouting quality, do not cause drilling accident etc.
Summary of the invention
The invention provides Grout-jetting pipe length-measuring appliance in a kind of grout hole, the selective examination Grout-jetting pipe that solves quality testing department not proposing grout hole outside, be positioned at hole and transfer under the state of installation, how to measure the problem of the interior Grout-jetting pipe length of grout hole.It is simple, quick that this measurement mechanism is measured operation, and data accurately and not affect grouting quality, do not cause drilling accident.
Above-mentioned purpose of the present invention is to realize by such technical scheme: Grout-jetting pipe length-measuring appliance in a kind of grout hole, the top of Grout-jetting pipe is fixed with sensor, sensor connects acquisition and analysis device by data line, and the top position of described Grout-jetting pipe is provided with an automatic exciting source.
Described sensor is acceleration transducer, and exciting source is portable super magnetic focus automatically.
Grout-jetting pipe length-measuring appliance in a kind of grout hole of the present invention, has changed length that quality testing department for a long time measures Grout-jetting pipe in the grout hole passive means by " propose grout hole outer, be positioned at hole and transfer installation ".Also can change and measure the length of Grout-jetting pipe with tape measure by root, then issue by root the original way being installed in hole successively simultaneously.Make to measure that operation is more simple, quick, data are accurate, improved work efficiency, reduced the probability that causes drilling accident.By the exciting of automatic exciting source, be conducive to obtain squiggle accurately.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Embodiment
As shown in Figure 1, Grout-jetting pipe length-measuring appliance in a kind of grout hole, the top of Grout-jetting pipe 2 is fixed with sensor 3, and sensor 3 connects acquisition and analysis device 5 by data line 4, and the top position of described Grout-jetting pipe 2 is provided with an automatic exciting source 6.Automatically when exciting source 6 is test, be placed in Grout-jetting pipe 2 tops, exciting recession from.Described acquisition and analysis device 5 possesses the functions such as signal amplification, filtering, A/D conversion, record, processing.Described sensor is acceleration transducer, and exciting source is the portable super magnetic focus of RSM-RBR type automatically.
Principle of work:
The length detection of Grout-jetting pipe 2 adopts stress reflexion method to measure, and the main theoretical basis of the reform of Chinese economic structure of the method is the elastic stress wave reflection theory of one dimension rod member.Excite elastic stress wave at Grout-jetting pipe 2 tops, the stress wave producing will be propagated downwards along pile body, in communication process, as run into the interface that wave impedance changes, by generation sound wave reflection and transmission.In the time that elastic stress wave passes ripple to Grout-jetting pipe bottom, because the slurries of Grout-jetting pipe and Grout-jetting pipe bottom exist wave resistance difference, generation reflection wave is got back to Grout-jetting pipe top.Spreading Velocity of Stress Wave during according to the walking of reflection wave and in Grout-jetting pipe just can adopt formula (1) to determine the length L of Grout-jetting pipe, and the fixed velocity of wave in the Grout-jetting pipe at the scene enterprising rower of Grout-jetting pipe of known length is fixed.
----------------------（1）
In formula: v
cfor fixed velocity of wave in Grout-jetting pipe; T is the two way travel time of stress reflexion ripple.
Repeatedly carry out exciting, obtain the squiggle that many unitarities are good.By the analysis to squiggle, can Obtaining Accurate Grout-jetting pipe 3 length.The factor of total length Grout-jetting pipe length detection most critical is: determine consolidation rate and obtain apparent bottom reflection.Consolidation rate need to shift to an earlier date at the scene to be demarcated and obtains in advance on of the same type, the same Grout-jetting pipe of batch known length.
Implementation step:
Grout-jetting pipe 2 packs in consolidation grouting hole 1, and sensor 3 is fixed on Grout-jetting pipe 2 tops, and sensor 3 is connected in acquisition and analysis device 5 by data line 4.Use automatic exciting source 6 to Grout-jetting pipe 2 excitings, acquisition and analysis device 5 obtains squiggle, and obtains the length of Grout-jetting pipe 2 by analysis.
Claims (3)
1. Grout-jetting pipe length-measuring appliance in a grout hole, it is characterized in that, the top of Grout-jetting pipe (2) is fixed with sensor (3), and sensor (3) connects acquisition and analysis device (5) by data line (4), and the top position of described Grout-jetting pipe (2) is provided with an automatic exciting source (6).
2. Grout-jetting pipe length-measuring appliance in a kind of grout hole according to claim 1, is characterized in that, described sensor (3) is acceleration transducer.
3. Grout-jetting pipe length-measuring appliance in a kind of grout hole according to claim 1, is characterized in that, exciting source (6) is portable super magnetic focus automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310013264.6A CN103925894A (en) | 2013-01-15 | 2013-01-15 | Device for measuring length of slurry spraying pipe in grout hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310013264.6A CN103925894A (en) | 2013-01-15 | 2013-01-15 | Device for measuring length of slurry spraying pipe in grout hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103925894A true CN103925894A (en) | 2014-07-16 |
Family
ID=51144195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310013264.6A Pending CN103925894A (en) | 2013-01-15 | 2013-01-15 | Device for measuring length of slurry spraying pipe in grout hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103925894A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836320A (en) * | 2017-03-20 | 2017-06-13 | 浙江大学 | Provided pipe bottom exciting side hole receives velocity of wave test pile bottom slip casting test apparatus and method |
| CN106871768A (en) * | 2017-04-17 | 2017-06-20 | 云南滇源建设有限公司 | A kind of hydraulic tunnel grout hole inspecting hole device |
| CN108442423A (en) * | 2018-05-10 | 2018-08-24 | 河南工业大学 | A kind of device that cast-in-situ bored pile bottom hole sediment thickness measures |
-
2013
- 2013-01-15 CN CN201310013264.6A patent/CN103925894A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836320A (en) * | 2017-03-20 | 2017-06-13 | 浙江大学 | Provided pipe bottom exciting side hole receives velocity of wave test pile bottom slip casting test apparatus and method |
| CN106871768A (en) * | 2017-04-17 | 2017-06-20 | 云南滇源建设有限公司 | A kind of hydraulic tunnel grout hole inspecting hole device |
| CN108442423A (en) * | 2018-05-10 | 2018-08-24 | 河南工业大学 | A kind of device that cast-in-situ bored pile bottom hole sediment thickness measures |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140716 |