CN207148041U - A kind of device for strengthening anchor pole bottom reflection signal - Google Patents
A kind of device for strengthening anchor pole bottom reflection signal Download PDFInfo
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- CN207148041U CN207148041U CN201720996618.7U CN201720996618U CN207148041U CN 207148041 U CN207148041 U CN 207148041U CN 201720996618 U CN201720996618 U CN 201720996618U CN 207148041 U CN207148041 U CN 207148041U
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Abstract
A kind of device of enhancing anchor pole bottom reflection signal for being used for anchor rod nondestructive testing method in engineering equipment field of non destructive testing and the method for corresponding enhancing anchor pole bottom reflection signal.Device includes outermost layer, the second layer and innermost circle three-decker, is specifically made up of the part such as cylindrical housing, joining section, cavity segment, reflex arc, fixing bolt.Cylindrical housing contacts as device outermost layer with bolthole hole wall and mortar, and joining section, fixing bolt contact with anchor rod body, and for device is fixed on anchor rod body, cavity segment and reflex arc are used for making incoming signal produce strong reflection.The method of enhancing anchor pole bottom reflection model includes said apparatus being fixed on anchor pole bottom, using anchor rod body and bottom environment wave impedance difference is bigger, reflected energy more powerful feature, by the device incoming signal can be made to produce maximum reflection in anchor rod body bottom, so as to reach the purpose of enhancing anchor pole detection without damage bottom reflection signal.
Description
Technical field
The utility model belongs to engineering equipment technical field of nondestructive testing, and more particularly to one kind can strengthen the lossless inspection of anchor pole
The device of anchor pole bottom reflection signal and the detection method using the device in survey, so as to reduce anchor pole detection analysis
Difficulty, the accuracy and accuracy for improving anchor rod nondestructive testing method, so as to more objective and accurate evaluation Detection of Bolt Bonding Integrity state.
Background technology
Suspension roof support widely uses in the tunnels such as water conservancy and hydropower, mine, road and rail, slope ground engineering.And anchor pole
The judgement and evaluation of support engineering quality need to realize by nondestructive detection-measurement for anchor bars.
Nondestructive detection-measurement for anchor bars is as the quality determining method commonly used in suspension roof support engineering.Its operation principle be exactly
Termination point of anchor rod excites elastic wave, and elastic wave is propagated in anchor rod body system, is reflected after anchor rod body bottom is propagated to,
The receiver that caused back wave is installed in termination point of anchor rod is received.By analyzing the reflected signal from anchor pole bottom, come
Evaluate Detection of Bolt Bonding Integrity.The key element of the method is exactly reflected signal of the analysis from anchor pole bottom, when anchor pole bottom is anti-
Penetrate that energy is stronger, the anchor pole bottom reflection signal received is more clear, and clearly anchor pole bottom reflection signal is just by analyzing
Accurate evaluation can be made to the Detection of Bolt Bonding Integrity state detected.And when the reflected energy of anchor pole bottom is smaller, connect
The anchor pole bottom reflection signal received is difficult to identify, can not just the Detection of Bolt Bonding Integrity state detected be made and accurately comment
Valency.
During suspension roof support quality testing, because anchor rod body bottom with it is mortar cementitious preferable when, anchor pole and mortar ripple
Resistance difference is smaller, it is difficult to occurs compared with strong reflection, causes that the useful signal that can be analyzed is faint, feelings of even None- identified
Condition can often run into, this in this case, testing staff is difficult that the Detection of Bolt Bonding Integrity state detected is made accurately
Evaluation.In conventional research, how the research for problems extracts in faint reflected signal if all concentrating on
Effective reflected signal, but such a method wastes time and energy, and also accuracy is relatively low.
Compared to prior art, such as CN201464428U, CN201532381U, CN101650341A, the application is in key
Obvious advantage in link be present.First key link is during anchor pole jack, and bottom reflection device is in anchor rod body
Anchor pole bottom can be fixedly attached in the case of having larger frictional resistance with hole wall, this patent fills to bottom reflection signal enhancing
Put and the combination of anchor pole has been carried out detailed and cleverly designed, ensure that bottom reflection device is having larger frictional resistance situation also
Anchor pole bottom can be fixedly attached to；Second key link is anchor pole bottom reflection medium, and this patent is based on wave impedance principle,
Incidence wave travels to the reason for anchor pole bottom can reflect strong reflection, is that incidence wave encounters the propagation that two kinds of wave impedance differ greatly
Medium, this patent specify that the reflecting material being made up of air and polyethylene reflecting medium by various tests and contrast, two kinds
Material wave impedance difference all has very big difference with anchor pole and mixed mud.
Utility model content
For above-mentioned technical problem, the utility model is broken through Traditional Thinking, carried out based on wave impedance principle
Extension, when being propagated using incidence wave in two media, two media wave impedance difference is bigger, occurs on two media surface anti-
The stronger characteristic of energy is penetrated, designs a kind of device that can strengthen anchor pole detection without damage bottom reflection signal, and by each
Kind experimental test and contrast, obtain a series of wave impedance parameter of materials such as air, polyethylene, concrete, anchor pole, its is hollow
The wave impedance of gas is about 0.49 close to zero, polyethylene wave impedance, and concrete wave impedance is about 8.6, and material quality of bolt wave impedance is about
For 40.6, pass through and choose the air that wherein wave impedance differs greatly and the bottom reflection device material that polyethylene reflecting medium forms
Material.Maximum difference of impedance between anchor rod body bottom and contact environment is set out by using the device in detection method
It is different, so that incoming signal produces maximum reflection in anchor rod body bottom, and then by analyzing clearly enhanced anchor pole bottom
Reflected signal is held, reaching reduces that anchor pole detection without damage data point is difficult, wastes time and energy and technical problem that accuracy is relatively low.
A kind of device for strengthening anchor pole bottom reflection signal, it can be fixed on the bottom of anchor pole, and device includes outer
Shell, the internal side wall of shell are divided into joining section and cavity segment, and the wherein side wall of joining section is contacted and is fixed on anchor rod body
Together, reflex arc is designed with the bottom interior wall of shell, cavity segment and reflex arc are used for making incoming signal produce strong reflection.
Wherein, the internal side wall of shell forms two layers of the different second layer of height and innermost circle, its outermost layer with shell
Form three-decker.
Preferably, shell is cylindrical shape, and outermost diameter is less than bolthole, and the diameter of the second layer is straight more than anchor rod body
Footpath, the diameter of innermost circle are less than anchor rod body diameter；Wherein the second layer corresponds to joining section, and innermost circle corresponds to cavity segment, second
Jacking section is provided between layer and innermost circle, above-mentioned jacking section is used to hold anchor pole bottom.Wherein outermost diameter is less than anchor
Rod aperture 10-20mm；The diameter of the second layer is more than anchor rod body diameter 1-2mm；Innermost circle diameter is less than anchor rod body diameter 2-
4mm；The second layer corresponds to the length about 4cm of joining section, and the length that innermost circle corresponds to cavity segment is 5-8cm, and the length of jacking section is about
4mm。
Can be preferably additionally that shell is cylindrical shape, outermost diameter is less than bolthole, the diameter and anchor of the second layer
Club shaft diameter is consistent, and the diameter of innermost circle is more than anchor rod body diameter；Wherein the second layer corresponds to joining section, and innermost circle is corresponding empty
Chamber section.Wherein outermost diameter is less than bolthole 10-20mm；Innermost circle diameter is more than anchor rod body diameter 2-4mm；The second layer
The length about 4cm of corresponding joining section, the length that innermost circle corresponds to cavity segment is 5-8cm.
Apparatus above can also be provided with fixing bolt in joining section, for intensifier and the engagement firmness of anchor pole.
The utility model further relates to a kind of Non-Destructive Testing based on enhancing anchor pole bottom reflection signal using said apparatus
Method, comprise the following steps：Said apparatus is fixed on anchor pole bottom；The elasticity of certain frequency is excited in termination point of anchor rod
Ripple；Reflected signal from the anchor rod body bottom for being mounted with said apparatus is gathered by detector.
Compared with prior art, the beneficial effects of the utility model are that break through Traditional Thinking regards surely, from anchor rod body sheet
Body sets out, and on wave impedance basis, leads to and installs reflected signal intensifier in anchor rod body bottom, make the anti-of anchor pole bottom
Penetrate signal to greatly enhance, fundamentally change the universal fainter present situation of anchor pole bottom reflection signal, increased by analyzing to obtain
Anchor pole bottom reflection signal after strong, greatly reduces discriminant analysis difficulty of the tester to bottom reflection signal, improves
The accuracy of detection of nondestructive detection-measurement for anchor bars and the degree of accuracy.
Brief description of the drawings
Fig. 1：Strengthen the device example 1 of anchor pole bottom reflection signal；
Fig. 2：The sectional view of device example 1；
Fig. 3：Strengthen the device example 2 of anchor pole bottom reflection signal；
Fig. 4：The sectional view of device example 2；
Fig. 5：Use the detection method schematic diagram of the device of enhancing anchor pole bottom reflection signal；
Fig. 6：Strengthen the detection waveform after the installation of anchor pole bottom reflection recoil simulator；
Fig. 7：The detection waveform of enhancing anchor pole bottom reflection recoil simulator is not installed.
1- shells, 2- joining sections, 3- cavity segments, 4- reflex arcs, 5- jackings section, 6- fixing bolts, 7- outermost layers, 8- second
Layer, 9- innermost circles, 10- signals vibrator, 11- incidence waves, 12- anchor poles, 13- bottom reflection signal enhancings device, 14- anchor pole bars
The enhancing of bottom after body bottom, 15- incidence waves reflection process, 16- back waves, 17- signal receivers, 18- installation reflection units
Signal, 19- do not install the bottom signal of reflection unit.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
It can be fixed on the bottom of anchor pole 12 to a kind of device for strengthening anchor pole bottom reflection signal, and device includes outer
Shell 1, the internal side wall of shell 1 are divided into joining section 2 and cavity segment 3, and the wherein side wall of joining section 2 is contacted and consolidated with anchor rod body
It is scheduled on together, reflex arc 4 is designed with the bottom interior wall of shell 1, cavity segment 3 and reflex arc 4 is used for making incoming signal produce by force
Reflection.Device specifically may include two kinds, be all the three-decker that is made up of outermost layer 7, the second layer 8 and innermost circle 9 respectively with
And other parts groups into.The device profile is all cylindrical shape, and this drum design main purpose is easy for the inserted link of anchor pole 12
Construction, shell can also be other shapes beyond cylindrical shape as needed certainly, such as square tube shape etc..
Referring to Figure of description 1-2, it is the device of example 1, and specific internal structure is three-decker：Outermost layer 7 is straight
Footpath is less than 10~20mm of bolthole cylinder；The second layer 8 is the cylindrical cavity that diameter is more than 1~2mm of anchor rod body diameter；Most
Inner ring 9 is the cylindrical cavity that diameter is less than 2~4mm of anchor rod body diameter.It is correspondingly arranged between outermost layer 7 and the second layer 8
Length about 4cm joining section 2, fixing bolt 6 is provided with simultaneously in joining section 2, the main purpose for setting the joining section 2 is to make this
The engagement firmness of device and anchor rod body increase contact surface, intensifier and anchor pole；Set between the second layer 8 and innermost circle 9
Be equipped with length about 4mm jacking section 5, set the main purpose of the jacking section 5 to be used for holding anchor pole bottom, and when have mortar from
It when space position penetrates between outermost layer 7 and anchor pole wall, can also be stopped by jacking section 5, prevent mortar most interior from entering
In the cylindrical cavity of circle 9；5~8cm of length cavity segment 3 is provided with innermost circle 9, the bottom of cavity segment 3 is provided with arc reflection
Face is reflex arc 4, sets cavity segment 3 and reflex arc 4 to make incoming signal that maximum reflection occur.
Referring to Figure of description 3-4, it is the device of example 2, and specific internal structure is also three-decker：Outermost layer 7 is
Diameter is less than 10~20mm of bolthole cylinder；The second layer 8 is the diameter cylindrical cavity consistent with anchor rod body diameter, both
Diameter unanimously can both make anchor pole 12 and means for engaging close, can prevent mortar from entering in the cavity of innermost circle 9 again；Innermost circle 9
It is more than 2~4mm of anchor rod body diameter cylindrical cavity for diameter, this design predominantly makes anchor pole bar bottom form bigger bottom
Reflecting surface.Length about 4cm joining section 2 is correspondingly arranged between outermost layer 7 and the second layer 8, joining section 2 is provided with fixed spiral shell
Bolt 6, the main purpose for setting the joining section 2 are the device and anchor rod body is increased contact surface, and intensifier and anchor pole connect
Close firmness.5~8cm of length cavity segment 3 is provided with innermost circle 9, the bottom of cavity segment 3 is provided with curved reflecting surface i.e. reflex arc
4, set cavity segment 3 and reflex arc 4 to make incoming signal that maximum reflection occur.
Figure of description 5 illustrates the detection method of the device using enhancing anchor pole bottom reflection signal.In anchor pole 12
Protect in work progress, one bottom reflection signal enhancing device 13 is installed in advance in anchor pole bottom, increased by bottom reflection signal
Intensity device 13 is collectively forming the maximum wave impedance difference environment of an anchor pole bottom with anchor rod body in itself.When anti-to installation bottom
When penetrating the progress Non-Destructive Testing of anchor pole 12 of signal enhancing device 13, the elastic wave of certain frequency, elastic wave are excited in termination point of anchor rod
Propagated along anchor rod body, when the elastic wave propagation of incidence is to anchor rod body bottom 14, according to the principle of reflection of ripple, ripple exists
It can be reflected when being propagated in different medium, and the size of medium wave impedance difference determines the power that incidence wave reflects.
By being pre-installed in the reflected signal intensifier 13 of anchor rod body bottom 14, can make to travel to anchor rod body bottom 14
Incidence wave reflects to the full extent, so anchor pole detecting instrument can collect it is most strong anti-from anchor rod body bottom 14
Signal is penetrated, the reflected signal of anchor pole bottom 14 is stronger, and the bottom reflection signal of anchor pole detecting instrument collection is also just also clear, anchor pole inspection
It is more clear to survey the signal of instrument collection, testing staff is easier, more accurately judged anchor pole quality state.Specific ginseng
See Figure of description 5, a kind of lossless detection method based on the reflected signal of enhancing anchor pole bottom 14, signal vibrator 10 first exists
Termination point of anchor rod excites incidence wave 11, and incidence wave 11 is propagated along anchor rod body 12, reaches bottom reflection signal enhancing device 13,
Incidence wave reflection process 15 occurs for anchor rod body bottom 14, produces enhanced back wave 16 and is propagated back to anchor pole end along anchor rod body
Head, the signal receiver 17 for being installed in termination point of anchor rod are received.
Figure of description 6 is is mounted with the detection waveform after reflected signal intensifier, from waveform as can be seen that in anchor
The reflected signal of bar bottom has a significant enhancing, and the reflected signal sound width for installing the enhancing signal 18 of bottom after reflection unit reaches
It is intuitively obvious to 51mv, reflected signal；Accompanying drawing 7 is not install the detection waveform of reflected signal intensifier, can be with from waveform
Find out, the reflected signal in anchor pole bottom is faint, is difficult to identify, does not install the reflected signal sound of the bottom signal 19 of reflection unit
Width is 17mv.It is can be seen that by accompanying drawing 6-7 in the case where incoming signal is constant, be mounted with the bottom of reflecting signal apparatus
Reflected signal enhances about 3 times, and visual and clear, greatly reduces the difficulty of anchor pole detection without damage analysis, improves anchor pole
The accuracy of Non-Destructive Testing.
It follows that the device due to having used enhancing anchor pole bottom reflection signal, a maximum is formed in anchor pole bottom
Wave impedance difference environment, realize the purpose for reaching enhancing anchor pole detection without damage bottom reflection signal.
It is recited above simply explain through diagrams the utility model it is a kind of strengthen anchor pole bottom reflection signal device and make
With some embodiments of the detection method of the device, due to being easy to for the those of ordinary skill in constructed field
Carry out some modifications and change on the basis of this, thus this specification be not intended to a kind of enhancing anchor pole bottom of the utility model is anti-
Penetrate the device of signal and be confined to using the detection method of the device in shown and described concrete structure and the scope of application, thus it is all
It is corresponding modification and the equivalent for being possible to be utilized, belongs to the apllied the scope of the claims of the utility model.
Claims (9)
1. a kind of device for strengthening anchor pole bottom reflection signal, it can be fixed on the bottom of anchor pole, and device includes shell,
The internal side wall of shell is divided into joining section and cavity segment, and wherein the side wall of joining section contacts with anchor rod body and is fixed on one
Rise, reflex arc is designed with the bottom interior wall of shell, cavity segment and reflex arc are used for making incoming signal produce strong reflection.
2. a kind of device for strengthening anchor pole bottom reflection signal as claimed in claim 1, the internal side wall of shell form height
Two layers of the different second layer and innermost circle, the outermost layer of itself and shell form three-decker.
3. a kind of device for strengthening anchor pole bottom reflection signal as claimed in claim 2, shell is cylindrical shape, outermost straight
Footpath is less than bolthole, and the diameter of the second layer is more than anchor rod body diameter, and the diameter of innermost circle is less than anchor rod body diameter；Wherein
Two layers of corresponding joining section, innermost circle correspond to cavity segment, and jacking section is provided between the second layer and innermost circle, and above-mentioned jacking section is used
In holding anchor pole bottom.
A kind of 4. device for strengthening anchor pole bottom reflection signal as claimed in claim 3, wherein outermost diameter is less than anchor
10~20mm of rod aperture；The diameter of the second layer is more than 1~2mm of anchor rod body diameter；Innermost circle diameter be less than anchor rod body diameter 2~
4mm；The second layer corresponds to the length about 4cm of joining section, and the length that innermost circle corresponds to cavity segment is 5~8cm, and the length of jacking section is about
4mm。
5. a kind of device for strengthening anchor pole bottom reflection signal as claimed in claim 2, shell is cylindrical shape, outermost straight
Footpath is less than bolthole, and the diameter of the second layer is consistent with anchor rod body diameter, and the diameter of innermost circle is more than anchor rod body diameter；Wherein
The second layer corresponds to joining section, and innermost circle corresponds to cavity segment.
A kind of 6. device for strengthening anchor pole bottom reflection signal as claimed in claim 5, wherein outermost diameter is less than anchor
10~20mm of rod aperture；Innermost circle diameter is more than 2~4mm of anchor rod body diameter；The second layer corresponds to the length about 4cm of joining section, most
The length that inner ring corresponds to cavity segment is 5~8cm.
7. a kind of device of enhancing anchor pole bottom reflection signal as described in claim any one of 1-6, is provided with joining section
Fixing bolt, for intensifier and the engagement firmness of anchor pole.
8. a kind of device of enhancing anchor pole bottom reflection signal as described in claim any one of 1-6, the material bag of the device
Include polyethylene.
9. a kind of device for strengthening anchor pole bottom reflection signal as claimed in claim 7, the material of the device include polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720996618.7U CN207148041U (en) | 2017-08-10 | 2017-08-10 | A kind of device for strengthening anchor pole bottom reflection signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720996618.7U CN207148041U (en) | 2017-08-10 | 2017-08-10 | A kind of device for strengthening anchor pole bottom reflection signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356673A (en) * | 2017-08-10 | 2017-11-17 | 长江地球物理探测（武汉）有限公司 | A kind of device for strengthening anchor pole bottom reflection signal and the detection method using the device |
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2017
- 2017-08-10 CN CN201720996618.7U patent/CN207148041U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356673A (en) * | 2017-08-10 | 2017-11-17 | 长江地球物理探测（武汉）有限公司 | A kind of device for strengthening anchor pole bottom reflection signal and the detection method using the device |
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