CN105259586A - Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves - Google Patents
Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves Download PDFInfo
- Publication number
- CN105259586A CN105259586A CN201510585861.5A CN201510585861A CN105259586A CN 105259586 A CN105259586 A CN 105259586A CN 201510585861 A CN201510585861 A CN 201510585861A CN 105259586 A CN105259586 A CN 105259586A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic wave
- solution cavity
- pile
- stake
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method and a device for utilizing an electromagnetic wave CT technology to detect pile side and pile tip caves. The method comprises the steps of: after pile concrete of bored piles reaches an age, selecting a plurality of bored piles in a detected field for carrying out full-length core drilling, and obtaining a plurality of full-length core drilling holes; selecting two full-length core drilling holes to respectively serve as an emitting hole and a receiving hole, putting an emitting probe and a receiving probe of an electromagnetic wave instrument respectively into the emitting hole and the receiving hole; selecting a fixed-point and horizontal observation mode, and reading and recording electromagnetic wave signals through the electromagnetic wave instrument; and according to the detection result of the electromagnetic wave instrument, obtaining the positions, sizes, and forms of pile side caves and pile tip caves. The device comprises the electromagnetic wave instrument, the emitting hole, the emitting probe, the receiving hole and the receiving probe. The method and the device have the advantages that with the emitting probe and the receiving probe moving in the full-length core drilling holes, the distribution condition of the pile side caves and the pile tip caves in the whole filed is rapidly, effectively and economically known.
Description
Technical field
The present invention relates to the Detection Techniques of a side and stake end solution cavity, be specifically related to method and the device of a kind of electromagnetic wave CT technology detection stake side and stake end solution cavity.
Background technology
Along with the fast development of urban economy, all kinds of Larger Engineering Projects emerges in multitude.For solving foundation bearing capacity problem, drill-pouring embedded rock pile is comparatively widely used.The many cities of China are distributed with buried karst and covered karst, and situation more complicated, can produce material impact to the security of buildings pile and load-carrying properties.Therefore detect very important in karst distributed areas to stake side, stake end solution cavity.And traditional probing and geophysical prospecting method can only reflect the solution cavity distribution situation of local, a side solution cavity and stake end solution cavity cannot be verified exactly, current engineering construction needs can not be met.In addition, many cast-in-situ bored piles adopt total length to bore the Test Technology of Pile Foundation of core, and these bore the detection channels that core bore can double as a side and stake end solution cavity.
Summary of the invention
The technical problem to be solved in the present invention is, effect is there is undesirable for current stake side and stake end CAVE DETECTION, the deficiency of building place solution cavity distribution situation cannot be reflected comprehensively, a kind of method providing electromagnetic wave CT technology to detect stake side and stake end solution cavity and device, fast, effectively verify the stake side solution cavity in whole place and the distribution situation of stake end solution cavity.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A method for electromagnetic wave CT technology detection stake side and stake end solution cavity, comprises the following steps:
1) after the pile concrete of cast-in-situ bored pile reaches the length of time, the many cast-in-situ bored piles choosing detection place carry out the work that total length bores core, and the degree of depth of the total length brill core bore of acquisition at least reaches the position of the stake end bottom 5m of cast-in-situ bored pile;
2) choose two total lengths and bore core bore respectively as transmitting aperture and receiver hole, the horizontal range of transmitting aperture and receiver hole is less than 80m, and the transmitting probe of electromagnetic wave instrument and receiving transducer are put into transmitting aperture and receiver hole respectively;
3) check the patency of transmitting aperture and receiver hole, determine that electromagnetic wave instrument is normally connected with transmitting probe and receiving transducer signal;
4) select the detection mode of ocean weather station observation or level observation, read and recording electromagnetic wave signal by electromagnetic wave instrument;
5) according to electromagnetic wave instrument result of detection, the position of stake side solution cavity and stake end solution cavity, size and geometric is obtained.
By such scheme, described step 1) in the total length that the obtains degree of depth of boring core bore at least reach the position of the stake end bottom 5m of cast-in-situ bored pile.
By such scheme, described step 4) in realize ocean weather station observation, level observation by transmitting probe and receiving transducer being moved up and down in transmitting aperture and receiver hole.
By such scheme, described step 5) in, the detection stake side solution cavity when pile body position at cast-in-situ bored pile of transmitting probe and receiving transducer, the detection stake end solution cavity when pile body lower position at cast-in-situ bored pile of transmitting probe and receiving transducer.
Present invention also offers the device of a kind of electromagnetic wave CT technology detection stake side and stake end solution cavity, comprise electromagnetic wave instrument, transmitting aperture, transmitting probe, receiver hole and receiving transducer, described electromagnetic wave instrument is connected with transmitting probe and receiving transducer respectively, the total length that described transmitting aperture and receiver hole are all selected from cast-in-situ bored pile bores core bore, and described transmitting probe and receiving transducer put into transmitting aperture and receiver hole respectively.
By such scheme, described total length bores the stake end bottom 5m that the core bore degree of depth is not less than cast-in-situ bored pile.
By such scheme, the horizontal range of described transmitting aperture and receiver hole is less than 80m.
Compared with prior art, the invention has the beneficial effects as follows:
1, after cast-in-situ bored pile reaches the age of concrete, the many cast-in-situ bored piles choosing detection place carry out total length and bore core, the total length of cast-in-situ bored pile is utilized to bore core bore, total length is bored the detection channels of core bore as Underground Electromagnetic Waves instrument, transmitting probe and receiving transducer are put into transmitting aperture and receiver hole respectively, along with transmitting probe and receiving transducer bore the movement in core bore in total length, adopt the multiple detection mode such as ocean weather station observation, level observation, verify the stake side solution cavity in whole place and the distribution situation of stake end solution cavity fast, effectively, economically;
2, the total length detecting place bores core bore simultaneously also for detecting pile body integrity, concrete strength of pile, the sediment of the hole bottom thickness of cast-in-situ bored pile.
Accompanying drawing explanation
Fig. 1 is the work vertical section structure schematic diagram of electromagnetic wave CT technology of the present invention detection stake side and stake end solution cavity;
In figure, 1-electromagnetic wave instrument, 2-cast-in-situ bored pile, 3-transmitting aperture, 4-transmitting probe, 5-receiver hole, 6-receiving transducer, 7-stake side solution cavity, 8-stake end solution cavity.
Embodiment
Below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
With reference to shown in Fig. 1, the device of electromagnetic wave CT technology detection stake side of the present invention and stake end solution cavity, comprise electromagnetic wave instrument 1, transmitting aperture 3, transmitting probe 4, receiver hole 5 and receiving transducer 6, described electromagnetic wave instrument 1 is connected with transmitting probe 4 and receiving transducer 6 respectively, the total length that described transmitting aperture 3 and receiver hole 5 are all selected from cast-in-situ bored pile 2 bores core bore (the total length brill transmitting probe 4 of core bore as electromagnetic wave instrument 1 and the detection channels of receiving transducer 6, i.e. transmitting aperture 3 and receiver hole 5), total length bores the stake end bottom 5m that the core bore degree of depth is not less than cast-in-situ bored pile 2, the horizontal range of transmitting aperture 3 and receiver hole 5 is less than 80m, described transmitting probe 4 and receiving transducer 6 put into transmitting aperture 3 and receiver hole 5 respectively.
The method of electromagnetic wave CT technology detection stake side of the present invention and stake end solution cavity, comprises the following steps:
1) after the pile concrete of cast-in-situ bored pile 2 reaches the length of time, the many cast-in-situ bored piles 2 choosing detection place carry out total length and bore core, obtain several total lengths brill core bore, and the degree of depth of the total length brill core bore of acquisition at least reaches the position of the stake end bottom 5m of cast-in-situ bored pile 2;
2) total length choosing two certain distances bores core bore respectively as transmitting aperture 3 and receiver hole 5, and the horizontal range of transmitting aperture 3 and receiver hole 5 is less than 80m, and the transmitting probe 4 of electromagnetic wave instrument 1 and receiving transducer 6 are put into transmitting aperture 3 and receiver hole 5 respectively;
3) check the patency of transmitting aperture 3 and receiver hole 5, determine that the transmitting probe 4 of electromagnetic wave instrument 1 is normally connected with receiving transducer 6 signal;
4) select the detection mode of ocean weather station observation (fan survey method) or level observation (flat survey method), read and recording electromagnetic wave signal by electromagnetic wave instrument 1;
5) according to electromagnetic wave instrument 1 result of detection, the position of stake side solution cavity 7 and stake end solution cavity 8, size and geometric is obtained.
Described step 1) according to the actual conditions in detection place, reasonable layout cast-in-situ bored pile 2 position, quantity, guarantee that the line that total length is bored between core bore can cover whole place.
Described step 4) in realize ocean weather station observation, level observation by transmitting probe 4 and receiving transducer 6 to be moved up and down in transmitting aperture 3 and receiver hole 5.
Described step 5) in, the detection stake side solution cavity when pile body position at cast-in-situ bored pile 2 of transmitting probe 4 and receiving transducer 6, the detection stake end solution cavity when pile body lower position at cast-in-situ bored pile 2 of transmitting probe 4 and receiving transducer 6.
Should be understood that above-described embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and do not depart from the spirit and scope of technical solution of the present invention, and it all should be encompassed in right of the present invention after the content of having read the present invention's instruction.
Claims (7)
1. a method for electromagnetic wave CT technology detection stake side and stake end solution cavity, is characterized in that, comprise the following steps:
1), after the pile concrete of cast-in-situ bored pile reaches the length of time, the many cast-in-situ bored piles choosing detection place carry out total length and bore core, obtain several total lengths brill core bore;
2) choose two total lengths and bore core bore respectively as transmitting aperture and receiver hole, the horizontal range of transmitting aperture and receiver hole is less than 80m, and the transmitting probe of electromagnetic wave instrument and receiving transducer are put into transmitting aperture and receiver hole respectively;
3) check the patency of transmitting aperture and receiver hole, determine that the transmitting probe of electromagnetic wave instrument is normally connected with receiving transducer signal;
4) select the detection mode of ocean weather station observation or level observation, read and recording electromagnetic wave signal by electromagnetic wave instrument;
5) according to electromagnetic wave instrument result of detection, the position of stake side solution cavity and stake end solution cavity, size and geometric is obtained.
2. the method for electromagnetic wave CT technology according to claim 1 detection stake side and stake end solution cavity, is characterized in that, described step 1) in the total length that the obtains degree of depth of boring core bore at least reach the position of the stake end bottom 5m of cast-in-situ bored pile.
3. the method for electromagnetic wave CT technology according to claim 1 detection stake side and stake end solution cavity, is characterized in that, described step 4) in realize ocean weather station observation, level observation by transmitting probe and receiving transducer being moved up and down in transmitting aperture and receiver hole.
4. the method for electromagnetic wave CT technology detection stake side according to claim 1 and stake end solution cavity, it is characterized in that, described step 5) in, the detection stake side solution cavity when pile body position at cast-in-situ bored pile of transmitting probe and receiving transducer, the detection stake end solution cavity when pile body lower position at cast-in-situ bored pile of transmitting probe and receiving transducer.
5. the device of an electromagnetic wave CT technology detection stake side and stake end solution cavity, it is characterized in that, comprise electromagnetic wave instrument, transmitting aperture, transmitting probe, receiver hole and receiving transducer, described electromagnetic wave instrument is connected with transmitting probe and receiving transducer respectively, the total length that described transmitting aperture and receiver hole are all selected from cast-in-situ bored pile bores core bore, and described transmitting probe and receiving transducer put into transmitting aperture and receiver hole respectively.
6. the device of electromagnetic wave CT technology detection stake side according to claim 5 and stake end solution cavity, it is characterized in that, described total length bores the stake end bottom 5m that the core bore degree of depth is not less than cast-in-situ bored pile.
7. the device of electromagnetic wave CT technology detection stake side according to claim 5 and stake end solution cavity, it is characterized in that, the horizontal range of described transmitting aperture and receiver hole is less than 80m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585861.5A CN105259586A (en) | 2015-09-15 | 2015-09-15 | Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585861.5A CN105259586A (en) | 2015-09-15 | 2015-09-15 | Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105259586A true CN105259586A (en) | 2016-01-20 |
Family
ID=55099346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585861.5A Pending CN105259586A (en) | 2015-09-15 | 2015-09-15 | Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105259586A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290792A (en) * | 2017-07-12 | 2017-10-24 | 中煤科工集团西安研究院有限公司 | A kind of Electromagnetic perspective method in coal mine hole based on drilling |
| CN108008455A (en) * | 2017-11-29 | 2018-05-08 | 广州市公路勘察设计有限公司 | Bridge foundation solution cavity investigation method and device |
| CN110989029A (en) * | 2019-11-27 | 2020-04-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Geophysical prospecting test device for interpore and model different surfaces |
| CN112269213A (en) * | 2020-09-21 | 2021-01-26 | 中铁工程设计咨询集团有限公司 | Geological detection method, system and medium for multi-pile foundation of karst area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2431563Y (en) * | 1999-10-27 | 2001-05-23 | 山东矿业学院 | Rock mass CT detector |
| JP2006119058A (en) * | 2004-10-25 | 2006-05-11 | Hitachi Engineering & Services Co Ltd | Notation device for internal defect and position of arrangement of reinforcing bar |
| CN102565848A (en) * | 2010-12-08 | 2012-07-11 | 中国水电顾问集团贵阳勘测设计研究院 | Method and apparatus for detecting Karst cave by resonance wave imaging |
-
2015
- 2015-09-15 CN CN201510585861.5A patent/CN105259586A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2431563Y (en) * | 1999-10-27 | 2001-05-23 | 山东矿业学院 | Rock mass CT detector |
| JP2006119058A (en) * | 2004-10-25 | 2006-05-11 | Hitachi Engineering & Services Co Ltd | Notation device for internal defect and position of arrangement of reinforcing bar |
| CN102565848A (en) * | 2010-12-08 | 2012-07-11 | 中国水电顾问集团贵阳勘测设计研究院 | Method and apparatus for detecting Karst cave by resonance wave imaging |
Non-Patent Citations (4)
| Title |
|---|
| 周欣 等: "电磁波CT技术在溶洞勘察中的应用效果分析", 《CT理论与应用研究》 * |
| 曹获: "层析成像检测技术在钻孔灌注桩中的应用", 《浙江省公路学会2005年论文集》 * |
| 李才明 等: "电磁波层析成像在钻孔灌注桩质量检测中的应用", 《高校地质学报》 * |
| 黄生根 等: "CT技术在超长桩后压浆效果检测中的应用研究", 《岩土力学》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290792A (en) * | 2017-07-12 | 2017-10-24 | 中煤科工集团西安研究院有限公司 | A kind of Electromagnetic perspective method in coal mine hole based on drilling |
| CN108008455A (en) * | 2017-11-29 | 2018-05-08 | 广州市公路勘察设计有限公司 | Bridge foundation solution cavity investigation method and device |
| CN110989029A (en) * | 2019-11-27 | 2020-04-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Geophysical prospecting test device for interpore and model different surfaces |
| CN110989029B (en) * | 2019-11-27 | 2024-04-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Geophysical prospecting test device for different surfaces of hole and model |
| CN112269213A (en) * | 2020-09-21 | 2021-01-26 | 中铁工程设计咨询集团有限公司 | Geological detection method, system and medium for multi-pile foundation of karst area |
| CN112269213B (en) * | 2020-09-21 | 2023-06-23 | 中铁工程设计咨询集团有限公司 | Geological detection method, system and medium for karst region multi-pile foundation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103898931B (en) | A kind of base stake three-dimensional detection device based on boring radar and base stake 3 D detection method | |
| CN110196452A (en) | Extraordinary great burying underground piping detection device | |
| CN101570974A (en) | Method for detecting quality of existing building foundation piles with parallel seismic method | |
| CN105259586A (en) | Method and device for utilizing electromagnetic wave CT technology to detect pile side and pile tip caves | |
| CN105277993A (en) | Method for prospecting gold mine in sea area | |
| CN101581701A (en) | Method for detecting slip casting effect on ground surface | |
| CN102590874B (en) | Method for detecting ground surface crack of upland coal-mining subsidence paddy field | |
| CN101603419A (en) | A kind of detection method of mine direct current method of coal face coal seam perspecitivity | |
| Karlovsek et al. | Investigation of voids and cavities in bored tunnels using GPR | |
| CN110221340A (en) | A kind of set of tunneling construction method for forecasting advanced geology | |
| CN100489560C (en) | Method for detecting reinforcing bar cage length in concrete pouring pile by magnetic logging method | |
| CN104090306A (en) | Method for detecting radial water cut abnormal body in underground coal mine drilled hole | |
| CN105589069A (en) | Mining borehole radar advanced water detecting forecasting device and forecasting method | |
| CN106593424A (en) | Device and method for while-drilling detection of roadway roof rock Protodyakonov coefficient based on sound level meter | |
| CN115879333B (en) | Linear directional drilling geological exploration drilling layout method | |
| CN103061320B (en) | Method for determining soil permeability coefficient on basis of piezocone sounding | |
| CN103335169B (en) | A kind of geotechnical investigation method | |
| CN104632203A (en) | Method for detecting quality of water curtain of underground storehouse by adopting transient electromagnetic method | |
| CN104297796A (en) | Short-refraction investigation method for undulating surface of terrain high-variability area in ultra-thick loess highland | |
| CN112485833A (en) | Urban tunnel abnormal body detection method based on loop line source ground hole transient electromagnetism | |
| CN106646668B (en) | A kind of method for building up of radar logging standard well model | |
| CN203768955U (en) | Three-dimensional foundation pile detecting device based on drill radar | |
| CN103176216A (en) | Pipeline detection method and borehole antenna | |
| CN104597130A (en) | Method for detecting and analyzing evolution process of structure of surrounding rock in area of deep tunnel of coal mine | |
| CN112459837B (en) | Ground stress measuring point arrangement method for railway tunnel deep hole hydraulic fracturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |
|
| RJ01 | Rejection of invention patent application after publication |