CN107167848A - A kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock - Google Patents
A kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock Download PDFInfo
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- CN107167848A CN107167848A CN201710249868.9A CN201710249868A CN107167848A CN 107167848 A CN107167848 A CN 107167848A CN 201710249868 A CN201710249868 A CN 201710249868A CN 107167848 A CN107167848 A CN 107167848A
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- karst
- stake
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- geological radar
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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
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
Abstract
The invention discloses a kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock.This method is detected using geological radar；First in the place with measurand lithology and complete similar temperament, debug detection device and obtain background value；Then detected using loop aerial and cross antenna under the conditions of the 800MHz of working frequency 100, obtain the unfavorable geologic body such as karst, low-angle dip crack and crushed zone in the range of the certain depth below of stake holes bottom；Arrange that vertical antenna of the one group of quantity no less than four is obtained around stake holes wall with the presence or absence of karst, relative to unfavorable geologic bodies such as the low-angle dip crack of hole wall and crushed zones in pile lining surrounding again；And compared with background value and draw relatively reliable and accurate testing result.The present invention method strong operability, with very strong economic value.
Description
Technical field
The present invention relates to a kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock, belong to building
The detection technique field of stake holes.
Background technology
In Guizhou province, the basis of building uses manually digging hole filling pile mostly, how to judge the holding force of pile foundation
Whether the development of the unfavorable geologic bodies such as karst, crack and crushed zone is had below layer in the range of certain depth.Traditional method has pricker
Visit or boring and coring etc., the method one of the above be take, cost it is high；Two be that its method is only capable of representing a point, it is impossible to accurate right
Situation below stake bottom surface is judged.
The content of the invention
It is an object of the present invention to provide a kind of side of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock
Method.To solve the problem of stake holes bottom area is small, measuring point is few and inconvenient contrasts to exception so that testing result more may be used
Lean on, Interpretation On The Results have more confidence level.
The technical proposal of the invention is realized in this way：
A kind of method of accurate detection manually digging hole filling pile stake molten developmental state of bed rock of the present invention is that this method is used
Geological radar is detected；Detected according to the following steps：
Step one, first in the place of one piece selected around of bored concrete pile and detected stake bed rock and complete similar temperament, adjust
The ranging of examination detection device and gain parameter will simultaneously be preserved the phase, be used as the background value of detection；
Step 2: arranging the geological radar antenna of two kinds of forms in the stake holes bottom of bored concrete pile, one kind is loop aerial, ring
Pile lining surrounding arrangement of the shape antenna along bottom hole；Another is cross antenna, and the crosspoint of cross antenna is located at bottom hole center,
The radar antenna of two kinds of forms is connected with geological radar；Then the working frequency of geological radar is adjusted into 100-800MHz to enter
Row detection, obtains the unfavorable geologic body such as karst, low-angle dip crack and crushed zone in the range of the certain depth below of stake holes bottom；
Step 3: arranging one group of vertical antenna in pile lining surrounding, the quantity of vertical antenna is no less than four；Each vertical day
Line is connected with geological radar；Then the working frequency of geological radar is adjusted into 100-800MHz to be detected, obtains stake holes
With the presence or absence of karst, relative to unfavorable geologic bodies such as the low-angle dip crack of hole wall and crushed zones around wall；
Step 4: the background value waveform that step one is obtained is contrasted with step 2 and three detected values obtained；Pass through
The developmental state of the unfavorable geologic body such as karst, low-angle dip crack and crushed zone infers the bottom with the presence or absence of steep around its hole wall
The unfavorable geologic bodies such as karst, crack and the crushed zone at inclination angle.
By adopting the above-described technical solution, the present invention is compared with prior art, the present invention determines manually digging hole to accurate
The unfavorable geologic bodies such as grout pile bed rock is molten, crack and crushed zone, are especially carried to the unfavorable geologic body of the steep dip of stake bottom
Supplied the method for complete set, to it is quick, accurately judge position and the fault location of the unfavorable geologic bodies such as karst, crack and crushed zone
Reason provides important data, this method strong operability, with very strong economic value.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 overlooking the structure diagram.
Marked in figure：1- loop aerials, 2- cross antennas, 3- vertical antennas, 4- stake holes, 5- hole walls, 6- cracks.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but not as to any of the present invention
Limitation.
A kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock, as shown in Fig. 1.This method is adopted
Detected with geological radar；Detected according to the following steps：
Step one, first in the place of one piece selected around of bored concrete pile and detected stake bed rock and complete similar temperament, adjust
The ranging of examination detection device and gain parameter are simultaneously preserved, and are used as the background value of detection；
Step 2: as shown in Fig. 2 arranging the geological radar antenna of two kinds of forms, Yi Zhongshi in the bottom of stake holes 4 of bored concrete pile
Loop aerial 1, pile lining surrounding arrangement of the loop aerial along bottom hole；Another is cross antenna 2, and the crosspoint of cross antenna is located at
Bottom hole center, the radar antenna of two kinds of forms is connected with geological radar；Then the working frequency of geological radar is adjusted
Detected for 100-800MHz, obtain karst, low-angle dip crack and crushed zone etc. in the range of the certain depth below of stake holes bottom
Unfavorable geologic body；
Step 3: as shown in figure 1, arranging one group of vertical antenna 3 in pile lining surrounding, the quantity of vertical antenna is no less than four
Bar；Each vertical antenna is connected with geological radar；Then the working frequency of geological radar is adjusted into 100-800MHz to carry out
Detection, is obtained around stake holes wall 5 with the presence or absence of karst, relative to unfavorable geologic bodies such as the low-angle dip crack of hole wall and crushed zones；
Step 4: the background value waveform that step one is obtained is contrasted with step 2 and three detected values obtained；Pass through
The developmental state of the unfavorable geologic body such as karst, low-angle dip crack and crushed zone infers the bottom with the presence or absence of steep around its hole wall
The unfavorable geologic bodies such as karst, crack 6 and the crushed zone at inclination angle.
Embodiment
This example is as shown in the figure.Specific implementation step is as follows：
1) lithology and integrality at detection stake bottom are determined, one piece of selection place periphery and detected stake bed rock and complete
The place of whole similar temperament, debugs the parameter (mainly ranging and gain) of detection device, and will preserve the phase；
2) antenna of geological radar is put into a bottom position, by Fig. 2 antenna arrangement and the parameter pair that preserves before
Detected at stake bottom position；The step be mainly judge karst in the range of the certain depth below of stake bottom bottom, low-angle dip crack and
The unfavorable geologic bodies such as crushed zone.
3) stake bottom position and vertical position are detected by Fig. 1 antenna arrangement；The step is mainly judgement
With the presence or absence of karst, relative to unfavorable geologic bodies such as the low-angle dip crack of hole wall and crushed zones around stake bottom outlet wall, pass through its hole
Around wall the developmental state of the unfavorable geologic body such as karst, low-angle dip crack and crushed zone come infer a bottom whether there is steep dip
The unfavorable geologic body such as karst, crack and crushed zone.
4), the unfavorable geologic bodies such as molten stake bed rock, fluid bowl or lapies are integrated to be analyzed；
5), draw a conclusion.
The present invention is at stake bottom using annular and cross-shaped antenna arrangement principle, it is ensured that the spy to stake bottom steep dip crack
Survey；Test parameter has been debugged as background value on the integrated foundation of exposure at the scene, it is ensured that inside the limited space in stake bottom
To judge that a bottom whether there is karst；During data interpretation, complete background value waveform and stake bottom are surveyed into waveform has at identical
Reason parameter is contrasted after being handled, and the judgement to background value and exceptional value is relatively reliable, accurate.
The operation principle of the present invention
The present invention is detected that the working frequency of geological radar is 100-800MHz, than frequency using the method for geological radar
The frequency of seismic wave that rate is not more than 1kHz is high, so as to improve the explanation to unfavorable geologic bodies such as karst, crack and crushed zones
Rate；In the arrangement burst at the seams, except, using in addition to cross, also loop aerial being added in hole wall, so as to ensure that to stake at stake bottom
The unfavorable geologic body complete detection such as karst, crack and crushed zone of bottom low-angle dip, also to determine that its shape provides data；In stake
No less than 4 survey vertical surveys line of bottom periphery increase, can detect that the karst of steep dip, crack and crushed zone etc. are no around hole wall
The developmental state of good geologic body, can determine whether out whether a bottom has karst, crack and crushed zone of steep dip etc. using this achievement
Unfavorable geologic body, it is unwise to the unfavorable geology precursor reactant such as the karst of steep dip, crack and crushed zone that this measure compensate for back wave
The drawbacks of sense；With detecting the enterprising survey parameter testing of the complete basement rock of stake bed rock identical before test, a bottom is solved by area
Small, measuring point it is few and inconvenient to abnormal contrast the problem of so that Interpretation On The Results are relatively reliable.
Claims (1)
1. a kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock, it is characterised in that：This method is used
Geological radar is detected；Detected according to the following steps：
Step one, first in the place of one piece selected around of bored concrete pile and detected stake bed rock and complete similar temperament, debugging inspection
The ranging of measurement equipment and gain parameter will simultaneously be preserved the phase, be used as the background value of detection；
Step 2: arranging the geological radar antenna of two kinds of forms in the stake holes bottom of bored concrete pile, one kind is loop aerial, annular day
Pile lining surrounding arrangement of the line along bottom hole；Another is cross antenna, and the crosspoint of cross antenna is located at bottom hole center, two kinds
The radar antenna of form is connected with geological radar；Then the working frequency of geological radar is adjusted into 100-800MHz to be examined
Survey, obtain the unfavorable geologic body such as karst, low-angle dip crack and crushed zone in the range of the certain depth below of stake holes bottom；
Step 3: arranging one group of vertical antenna in pile lining surrounding, the quantity of vertical antenna is no less than four；Each vertical antenna is equal
It is connected with geological radar；Then the working frequency of geological radar is adjusted into 100-800MHz to be detected, obtains stake holes wall week
Enclose with the presence or absence of karst, relative to unfavorable geologic bodies such as the low-angle dip crack of hole wall and crushed zones；
Step 4: the background value waveform that step one is obtained is contrasted with step 2 and three detected values obtained；Pass through its hole
Around wall the developmental state of the unfavorable geologic body such as karst, low-angle dip crack and crushed zone come infer a bottom whether there is steep dip
The unfavorable geologic body such as karst, crack and crushed zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710249868.9A CN107167848A (en) | 2017-04-17 | 2017-04-17 | A kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock |
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| CN201710249868.9A CN107167848A (en) | 2017-04-17 | 2017-04-17 | A kind of method of the accurate detection manually digging hole filling pile stake molten developmental state of bed rock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886329A (en) * | 2019-10-23 | 2020-03-17 | 上海建工四建集团有限公司 | Device for detecting perpendicularity of pile foundation and application method thereof |
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| CN102955174A (en) * | 2012-10-11 | 2013-03-06 | 中国水电顾问集团贵阳勘测设计研究院 | Method and device for detecting geological flaws at bottom of foundation pile holes through geological radar |
| CN103255756A (en) * | 2013-05-14 | 2013-08-21 | 中冶交通工程技术有限公司 | Method using geological radar for surveying pile foundation cave |
| CN103898931A (en) * | 2014-04-11 | 2014-07-02 | 广州建设工程质量安全检测中心有限公司 | Three-dimensional foundation pile detection device and method based on borehole radar |
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2017
- 2017-04-17 CN CN201710249868.9A patent/CN107167848A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102955174A (en) * | 2012-10-11 | 2013-03-06 | 中国水电顾问集团贵阳勘测设计研究院 | Method and device for detecting geological flaws at bottom of foundation pile holes through geological radar |
| CN102955174B (en) * | 2012-10-11 | 2015-07-01 | 中国水电顾问集团贵阳勘测设计研究院 | Method and device for detecting geological flaws at bottom of foundation pile holes through geological radar |
| CN103255756A (en) * | 2013-05-14 | 2013-08-21 | 中冶交通工程技术有限公司 | Method using geological radar for surveying pile foundation cave |
| CN103898931A (en) * | 2014-04-11 | 2014-07-02 | 广州建设工程质量安全检测中心有限公司 | Three-dimensional foundation pile detection device and method based on borehole radar |
Non-Patent Citations (4)
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| 周荣官: "《物探在地质灾害勘查中的应用与研究》", 30 September 2013, 河海大学出版社 * |
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| 张树风: "探地雷达图像的实用解释方法及其工程应用", 《广东土木与建筑》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886329A (en) * | 2019-10-23 | 2020-03-17 | 上海建工四建集团有限公司 | Device for detecting perpendicularity of pile foundation and application method thereof |
| CN110886329B (en) * | 2019-10-23 | 2023-05-26 | 上海建工四建集团有限公司 | Device for detecting perpendicularity of pile foundation and application method thereof |
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Application publication date: 20170915 |
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