CN211368817U - Elastic wave tomography system for detecting leakage hidden danger of foundation pit support structure - Google Patents
Elastic wave tomography system for detecting leakage hidden danger of foundation pit support structure Download PDFInfo
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- CN211368817U CN211368817U CN201922240669.9U CN201922240669U CN211368817U CN 211368817 U CN211368817 U CN 211368817U CN 201922240669 U CN201922240669 U CN 201922240669U CN 211368817 U CN211368817 U CN 211368817U
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- foundation ditch
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- 238000003325 tomography Methods 0.000 title claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000004587 chromatography analysis Methods 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims abstract description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 230000005856 abnormality Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The utility model discloses an elastic wave chromatography imaging system for detecting foundation ditch envelope seepage hidden danger relates to foundation ditch envelope, be in with setting up respectively including signal receiving and dispatching controlgear two detection holes of target detection area both sides in the foundation ditch envelope, two in the detection hole, one of them be equipped with elastic wave generator, another in the detection hole be equipped with the sensor cluster, elastic wave generator with the sensor cluster respectively with signal receiving and dispatching controlgear connects. The utility model has the advantages that: the elastic wave tomography system realizes the detection of the hidden danger of the building envelope in a larger range by means of an elastic wave generator with stronger energy and a multi-sensor receiving and speed inversion algorithm, can reduce the number of detection holes, can effectively suppress the interference of reinforcing steel bars and concrete aggregates, and simultaneously realizes the fine detection of the hidden danger of the building envelope by dense detection circuit coverage.
Description
Technical Field
The utility model relates to a foundation ditch retaining structure quality testing technical field, concretely relates to elastic wave chromatography imaging system for detecting foundation ditch retaining structure seepage hidden danger.
Background
In the process of foundation pit enclosure construction, due to the influence of various uncontrollable factors, the constructed enclosure structure may have structural abnormalities such as mud clamping, cavities, bifurcations and the like, and the abnormalities can become a main hidden danger of leakage in the process of foundation pit excavation, and if the abnormalities are not found out and repaired in advance, serious leakage may be formed in the process of foundation pit excavation, so that huge loss is caused. Therefore, it is important to detect the structural abnormalities in advance before excavation of the foundation pit, and the foundation pit enclosure structure is deeply buried in the soil body, so that the structural abnormalities are difficult to find. The wide range of fine detection means technology is in the technical blank.
Disclosure of Invention
The utility model aims at providing an elastic wave chromatography imaging system for detecting foundation ditch envelope seepage hidden danger according to the weak point of above-mentioned prior art, the sensor cluster that comprises elastic wave generator and a plurality of elastic wave receiving transducer and the signal receiving and dispatching controlgear who is connected with elastic wave generator and sensor cluster constitute detecting system to utilize special inversion algorithm to calculate the regional speed profile of target and judge the accurate position of envelope seepage hidden danger according to the speed profile.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides an elastic wave chromatography imaging system for detecting foundation ditch envelope seepage hidden danger, relates to foundation ditch envelope, its characterized in that: elastic wave chromatography imaging system includes signal receiving and dispatching controlgear and sets up respectively two detection holes of target detection area both sides in the foundation ditch envelope, two among the detection hole, one of them detection hole is equipped with elastic wave generator, another be equipped with the sensor cluster in the detection hole, elastic wave generator with the sensor cluster respectively with signal receiving and dispatching controlgear connects.
The sensor string comprises a plurality of elastic wave receiving sensors connected in series.
The depth of the detection hole is larger than that of the target detection area.
The utility model has the advantages that: this elastic wave chromatography imaging system, with the help of the elastic wave generator that the energy is stronger and sensor cluster and speed inversion algorithm realize that envelope hidden danger in wider scope detects, both reducible gauge hole's quantity, again can effectual suppression reinforcing bar and the interference of concrete aggregate, cover through intensive detection circuit simultaneously, realize the meticulous detection to envelope hidden danger, compare ultrasonic detection and to envelope's pore-forming damage still less, the cost is lower, the suitability is stronger.
Drawings
FIG. 1 is a schematic view of the arrangement of probe holes in the present invention;
FIG. 2 is a schematic diagram of the elastic wave generation and reception detection process of the present invention;
fig. 3 is a velocity profile between the detection holes according to the inversion of travel data in the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example with reference to the accompanying drawings, for the understanding of those skilled in the art:
referring to fig. 1-3, the labels 1-6 in the figures are: the device comprises an envelope structure 1, a detection hole 2, an elastic wave generator 3, a sensor string 4, a signal receiving and transmitting control device 5 and hidden dangers 6.
Example (b): as shown in fig. 1 and 2, the embodiment specifically relates to an elastic wave tomography system for detecting leakage hidden danger of a foundation pit enclosure, and relates to a foundation pit enclosure 1, wherein detection holes 2 are respectively arranged on two sides of a target detection area in the enclosure 1, an elastic wave generator 3 and a sensor string 4 containing a plurality of elastic wave receiving sensors are respectively arranged in the two detection holes 2, elastic wave transmission of the enclosure 1 between the two detection holes 2 is realized by receiving and transmitting elastic waves at different depths, the travel time of each receiving and transmitting is recorded by a signal receiving and transmitting control device 5, finally, a speed profile of the enclosure 1 is obtained according to an inversion algorithm, and the structural hidden danger 6 is judged according to the speed difference.
The target detection area, that is, the area including the position of the suspected potential hazard 6 in the enclosure 1, is described. And the sensor string 4 includes a plurality of elastic wave receiving sensors connected in series.
As shown in fig. 1 to 3, the elastic wave tomography system in this embodiment specifically includes the following steps in operation:
(1) in the embodiment, the detection object is a hidden danger 6 inside the enclosure structure 1, two sides of the hidden danger 6 are respectively drilled with a detection hole 2, and the depth of the detection hole 2 is ensured to be larger than that of the hidden danger 6;
(2) respectively placing an elastic wave generator 3 and a sensor string 4 into the two detection holes 2, and simultaneously connecting the elastic wave generator 3 and the sensor string 4 to a signal transceiving control device 5;
(3) keeping the position of the sensor string 8 still, sequentially moving the elastic wave generator 3 to different depths according to a certain depth interval, carrying out the elastic wave generation, transmission and receiving processes once when moving a new position, and storing the elastic wave signals received by the sensor string 4 by the signal transceiving control device 5;
(4) extracting the collected and stored travel time from the elastic wave generator 3 to the elastic wave receiving sensor by adopting special software, and calculating a speed profile between the two detection holes 2 by utilizing an inversion algorithm;
(5) and judging the position of the hidden danger 6 of the enclosure structure 1 according to the abnormal speed position on the speed profile, and determining the situation of the hidden danger 6.
Claims (3)
1. The utility model provides an elastic wave chromatography imaging system for detecting foundation ditch envelope seepage hidden danger, relates to foundation ditch envelope, its characterized in that: elastic wave chromatography imaging system includes signal receiving and dispatching controlgear and sets up respectively two detection holes of target detection area both sides in the foundation ditch envelope, two among the detection hole, one of them detection hole is equipped with elastic wave generator, another be equipped with the sensor cluster in the detection hole, elastic wave generator with the sensor cluster respectively with signal receiving and dispatching controlgear connects.
2. The elastic wave tomography system for detecting the potential leakage hazard of the foundation pit enclosure structure as claimed in claim 1, wherein: the sensor string comprises a plurality of elastic wave receiving sensors connected in series.
3. The elastic wave tomography system for detecting the potential leakage hazard of the foundation pit enclosure structure as claimed in claim 1, wherein: the depth of the detection hole is larger than that of the target detection area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922240669.9U CN211368817U (en) | 2019-12-14 | 2019-12-14 | Elastic wave tomography system for detecting leakage hidden danger of foundation pit support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922240669.9U CN211368817U (en) | 2019-12-14 | 2019-12-14 | Elastic wave tomography system for detecting leakage hidden danger of foundation pit support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211368817U true CN211368817U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922240669.9U Active CN211368817U (en) | 2019-12-14 | 2019-12-14 | Elastic wave tomography system for detecting leakage hidden danger of foundation pit support structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211368817U (en) |
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2019
- 2019-12-14 CN CN201922240669.9U patent/CN211368817U/en active Active
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Address after: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |
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| CP03 | Change of name, title or address |