CN218411509U - Deep rock mass multi-parameter fiber grating comprehensive test tube - Google Patents
Deep rock mass multi-parameter fiber grating comprehensive test tube Download PDFInfo
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- CN218411509U CN218411509U CN202222769907.7U CN202222769907U CN218411509U CN 218411509 U CN218411509 U CN 218411509U CN 202222769907 U CN202222769907 U CN 202222769907U CN 218411509 U CN218411509 U CN 218411509U
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Abstract
The utility model discloses a many parameters of deep rock mass fiber grating integrated test pipe, including the FBG outer tube, establish stress sensing module on the FBG outer tube, establish many physical parameter sensing module in the FBG outer tube, stress sensing module links to each other and is connected to external equipment with many physical parameter sensing module. The utility model discloses in, integrated design has the electronic gyroscope in the FBG outer tube, fiber grating fluid pressure sensor, fiber grating vibrations sensor, fiber grating temperature sensor etc, the confining pressure through the deep ground of fiber grating ground stress sensor detectable, two-dimentional through the deep rock mass of fiber grating stress sensor detectable is to ground stress, through the fluid pressure in the deep ground of fiber grating fluid pressure sensor detectable, through the slight shock activity vibration signal of fiber grating vibrations sensor detectable underground rock mass, through the temperature of fiber grating temperature sensor detectable underground deep ground, for research rock mass deep provides multiple data and supports, and the accuracy is high.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering tests, concretely relates to many parameters of deep rock mass fiber grating comprehensive testing pipe.
Background
Traditional conventional sensor, like sensors such as resistance-type, vibrating wire formula, deviational survey pipe, durability and poor stability under corrosive environment, long distance laying cost is higher, and can't automatic real-time measurement, often is difficult to monitor to deep ground structure, not only monitoring inefficiency, and the accuracy is poor, can not realize real-time supervision moreover.
Fiber gratings have been widely used in the field of fiber sensing since the advent. The fiber grating sensor has the advantages of electromagnetic interference resistance, corrosion resistance, electrical insulation, high sensitivity, low cost, good compatibility with common optical fibers and the like, and is receiving more and more attention. The resonant wavelength of the fiber grating is sensitive to stress strain and temperature change, so the fiber grating is mainly used for measuring the temperature and the stress strain. Compared with the conventional sensor, the optical fiber sensing technology has the advantages of electromagnetic interference resistance, fast dynamic response, high sensitivity and testing precision, strong durability, remote real-time monitoring and the like, and is particularly important in detection application. Particularly, when a plurality of parameters need to be measured in a deep rock-soil environment, the optical fiber sensing technology can use one optical fiber to connect all detection sensors in series, collect data for all the sensors simultaneously, and monitor parameter changes in the deep rock-soil.
At present, when relevant parameters of deep rock mass are detected, fiber grating sensors are widely used, but the sensors monitor single parameters, data support of a system cannot be formed, and further environmental changes of the deep rock mass cannot be known in a more comprehensive and detailed mode. Therefore, the utility model provides a many parameters of deep rock mass fiber grating comprehensive testing pipe realizes simultaneously that confined pressure, two dimension of listening the deep ground of underground are to parameter such as the temperature of ground stress, deep ground internal liquid pressure, the little shake activity vibration signal of underground rock mass and the deep ground of underground.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the prior art, the utility model aims to provide a deep rock mass multi-parameter fiber grating comprehensive testing pipe.
In order to realize the above purpose, reach above-mentioned technological effect, the utility model discloses a technical scheme be:
the utility model provides a many reference parameters fiber grating of deep rock mass comprehensive testing pipe, includes the FBG outer tube, be provided with stress sensing module on the FBG outer tube, be provided with many physical parameter sensing module in the FBG outer tube, stress sensing module links to each other and is connected to external equipment with many physical parameter sensing module.
Further, the FBG outer tube includes outer tube under outer tube and the FBG of connecting outer tube, FBG down connection outer tube and the FBG on the FBG that from top to bottom sets up in proper order.
Further, stress sensing module includes fiber grating ground stress sensor, fiber grating stress sensor one and fiber grating stress sensor two, the outer tube links to each other with fiber grating ground stress sensor upper portion on the FBG, it links to each other to connect the outer tube on fiber grating ground stress sensor lower part and the FBG, fiber grating stress sensor one is installed to the last outer tube lower part of connecting of FBG, it links to each other to connect the outer tube under fiber grating stress sensor lower part and the FBG, connect the outer tube lower part under the FBG and install fiber grating stress sensor two, many physical parameter sensing module are installed to fiber grating stress sensor two lower parts.
Further, the lower part all is equipped with the screw thread on the fiber grating ground stress sensor, outer tube thread on the FBG on outer tube on the last screw thread one on fiber grating ground stress sensor upper portion and the FBG, the lower screw thread one of fiber grating ground stress sensor lower part is connected the outer tube with the FBG and is linked to each other, fiber grating ground stress sensor and outside country rock body close coupling and interact.
Furthermore, an upper thread II at the upper part of the first fiber bragg grating stress sensor is connected with the upper connecting outer pipe of the FBG, a lower thread II at the lower part of the first fiber bragg grating stress sensor is connected with the lower connecting outer pipe of the FBG, and the sensitive direction of the first fiber bragg grating stress sensor is arranged in the X direction; the upper thread three on the upper portion of the fiber grating stress sensor is connected with the FBG lower connecting outer tube, the lower thread three on the lower portion of the fiber grating stress sensor is connected with the FBG lower outer tube, and the sensitive direction of the fiber grating stress sensor is placed in the Y direction.
Furthermore, a twist hole is reserved in the upper half part of the outer tube under the FBG, and the fiber bragg grating fluid pressure sensor of the multi-physical parameter sensing module is communicated with the outside through the twist hole.
Furthermore, outer tube internally mounted has the electron gyroscope on the FBG, the electron gyroscope is qualified for the next round of competitions the cable through the electron gyroscope and is connected to the external equipment.
Furthermore, many physical parameter sensing module includes fiber grating fluid pressure sensor, fiber grating vibrations sensor and fiber grating temperature sensor, fiber grating stress sensor two is installed on fiber grating fluid pressure sensor upper portion, fiber grating vibrations sensor is installed to fiber grating fluid pressure sensor lower part, fiber grating temperature sensor is installed to fiber grating vibrations sensor lower part.
Further, the fiber bragg grating fluid pressure sensor is installed on the partition plate c inside the outer tube under the FBG, the fiber bragg grating fluid pressure sensor is communicated with the outside, and the partition plate b is installed on the upper portion of the fiber bragg grating fluid pressure sensor and used for preventing fluid from flowing to other sensors.
Furthermore, the fiber bragg grating vibration sensor is arranged on an isolation plate d in the FBG lower outer tube, and the isolation plate d is rigidly connected with the FBG outer tube and the fiber bragg grating vibration sensor; the fiber bragg grating temperature sensor is installed on an isolation plate e inside the outer tube under the FBG.
Furthermore, the fiber grating ground stress sensor, the fiber grating stress sensor I, the fiber grating stress sensor II, the fiber grating fluid pressure sensor, the fiber grating vibration sensor and the fiber grating temperature sensor are all connected in series through outgoing optical cables and are connected to external equipment, and data transmission is achieved.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a many parameter fiber grating of deep rock mass comprehensive test tube, the FBG outer tube is by the FBG upper outer tube that sets up from top to bottom in proper order, connect the outer tube on the FBG, connect outer tube and FBG lower outer tube etc. constitute under the FBG, integrated design has the electronic gyroscope in the FBG outer tube, fiber grating fluid pressure sensor, fiber grating vibrations sensor, fiber grating temperature sensor etc., play the effect of protection internal sensor, avoid the influence of outside deep ground environment, can orient when putting deep ground down through setting up the electronic gyroscope and being used for many parameter fiber grating of deep rock mass comprehensive test tube, fix a position, ensure that many parameter fiber grating of deep rock mass comprehensive test tube install correctly in place, can accurately detect the confining pressure of deep ground through fiber grating ground stress sensor, through fiber grating stress sensor one, the two-dimensional ground stress of two cooperation detectable deep rock mass of fiber grating stress sensor, realize accurate detection deep ground internal fluid pressure in deep rock mass through fiber grating fluid pressure sensor, realize accurate detection underground micro-seismic vibration signal through fiber grating vibrations sensor, realize accurate detection underground temperature through fiber grating temperature sensor, can reach the deep rock mass high accuracy test more thousandths of deep rock mass, the research of the deep rock mass change is more thousandths, the high-S can provide more. The integral structure is simple, the installation is convenient, the comprehensive test tube can be directly placed into a deep rock body after being processed and delivered from a factory, and each sensor does not need to be installed and placed; all the sensors are connected in series through one optical fiber, and the wiring is simple and not complicated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural view of the present invention without installing an FBG outer tube;
fig. 4 is a schematic structural view of an outer tube on an FBG of the present invention;
fig. 5 is a schematic structural view of the lower outer tube of the FBG of the present invention;
fig. 6 is a schematic structural diagram of the fiber grating ground stress sensor of the present invention;
fig. 7 is a schematic structural diagram of a first fiber grating stress sensor and a second fiber grating stress sensor of the present invention.
Detailed Description
The present invention is described in detail below to enable the advantages and features of the present invention to be more easily understood by those skilled in the art, thereby making more clear and definite definitions of the scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
As shown in fig. 1-7, a deep rock multi-parameter fiber grating comprehensive test tube comprises an FBG outer tube, which comprises an FBG upper outer tube 2, an FBG upper connection outer tube 6, an FBG lower connection outer tube 8, an FBG lower outer tube 13, an electronic gyroscope 4 mounted inside the FBG upper outer tube 2, the electronic gyroscope 4 connected to an external device through an electronic gyroscope outgoing cable 3, the FBG upper outer tube 2 connected to an upper portion of a fiber grating ground stress sensor 5, a lower portion of the fiber grating ground stress sensor 5 connected to the FBG upper connection outer tube 6, a fiber grating stress sensor 7 mounted on the FBG upper connection outer tube 6, a fiber grating stress sensor 7 connected to the lower connection outer tube 8, a fiber grating stress sensor two 9 mounted on the lower portion of the FBG lower connection outer tube 8, a fiber grating fluid pressure sensor 10 mounted on the lower portion of the fiber grating stress sensor two 9, a fiber grating fluid pressure sensor 11 mounted on the lower portion of the fiber grating fluid pressure sensor 10, a fiber grating vibration sensor 11 mounted on the lower portion of the fiber grating vibration sensor 11, a fiber grating temperature sensor 12 mounted on the fiber grating outer tube and connected to an external fiber grating through a fiber grating stress sensor 12, and a fiber grating stress sensor 12 connected to an external fiber grating stress sensor 12 connected to a fiber grating stress sensor via a fiber grating stress sensor 12, the connection mode can reduce the number of optical cables, increase the synchronism of data, can monitor, analyze and research various environmental parameters under the deep rock mass simultaneously, can help people to analyze and research the environmental state and the change of the deep rock mass more comprehensively, solves the problem that the deep rock mass parameters can only be acquired singly in the past, and provides powerful data support for further understanding and analyzing the environmental change of the deep rock mass.
The FBG upper outer tube 2 specifically comprises an FBG upper outer tube main body 22, an FBG upper outer tube outlet 21 is formed in the upper portion of the FBG upper outer tube main body 22, the outlet adopts a sealing mode to be led out, the inside and the outside of the tube are completely isolated, an isolation plate a 23 is arranged in the FBG upper outer tube main body 22, an FBG upper outer tube thread 24 is arranged on the lower portion of the FBG upper outer tube main body 22, the electronic gyroscope 4 is installed on the isolation plate a 23 in the FBG upper outer tube 2, and the deep rock mass multi-parameter fiber grating comprehensive test tube can be oriented and positioned when being placed on deep rock mass, so that the deep rock mass multi-parameter fiber grating comprehensive test tube is ensured to be correctly installed in place.
Fiber grating ground stress sensor 5 is including measuring the main part, it is used for the confined pressure to measure the main part, the upper and lower part of measuring the main part all is equipped with the screw thread, it is used for on the FBG on outer tube 2 on with the FBG outer tube screw thread 24 continuous to measure the first 51 last screw thread on main part upper portion, it is connected outer tube 6 continuously on being used for with the FBG, fiber grating ground stress sensor 5 and outside surrounding rock body closely combine FBG, interact, not influenced by outer tube material intensity, can the accurate confined pressure that detects deep ground. The middle part of the fiber grating ground stress sensor 5 is provided with a plurality of fiber grating ground stress sensor fiber pasting grooves 53 along the circumferential direction.
The first fiber grating stress sensor 7 and the second fiber grating stress sensor 9 are the same sensors, rock-soil pressures in different directions can be detected according to the positions where the first fiber grating stress sensor 7 and the second fiber grating stress sensor 9 are placed, the first fiber grating stress sensor 7 places the sensitive direction of the first fiber grating stress sensor in the X direction, the stress of the X direction of a deep rock mass can be detected, the second fiber grating stress sensor 9 places the sensitive direction of the second fiber grating stress sensor in the Y direction, and the stress of the Y direction of the deep rock mass can be detected.
The FBG lower outer tube 13 specifically comprises an FBG lower outer tube main body 133, an FBG lower outer tube threaded column 131 is arranged on the upper portion of the FBG lower outer tube main body 133, a plurality of twist holes 132 are arranged on the upper portion of the FBG lower outer tube 13 or close to the upper portion of the FBG lower outer tube 13, a partition plate d 134, a partition plate e 135, a partition plate b 137 and a partition plate c 138 are arranged in the FBG lower outer tube main body 133, an FBG lower outer tube sealing port 136 is arranged on the lowest portion of the FBG lower outer tube main body 133, fluid can conveniently enter the FBG fluid pressure sensor 10 through the twist holes 132, sealing is formed through the partition plate b 137 and the partition plate c 138, the fluid cannot flow to other sensors, the FBG lower outer tube 13 is completely sealed, and the inside and outside of the tubes are completely isolated.
Connect the outer tube 6 with the FBG on the last screw thread two 71 on one 7 upper portions of fiber grating stress sensor links to each other, connect the outer tube 8 under the lower screw thread two 72 and the FBG of its lower part and link to each other, the last screw thread three on two 9 upper portions of fiber grating stress sensor links to each other with the FBG under the outer tube thread post 131 under the FBG on outer tube 13 upper portion under the lower screw thread three of its lower part and the FBG, can make the sensitive atress part of fiber grating stress sensor one 7 and fiber grating stress sensor two 9 and outside rock mass combine closely, interact, do not influenced by FBG outer tube material intensity, the two-dimensional stress of deep ground of accurate detection.
The fiber bragg grating fluid pressure sensor 10 is installed on the isolating plate c 138 inside the outer tube 13 under the FBG, the twist hole 132 in the outer tube 13 under the FBG is communicated with the outside, fluid in deep rock soil can flow into the isolating plate c 137, and the isolating plate b 137 is installed on the upper portion of the fiber bragg grating fluid pressure sensor 10 to prevent the fluid from flowing to other sensors and causing inaccurate data test. The detected fluid pressure data in the deep rock soil is accurate.
The fiber grating vibration sensor 11 is installed on the isolation plate d 134 inside the outer tube 13 under the FBG, and the isolation plate d 134 is rigidly connected with the outer tube of the FBG and the fiber grating vibration sensor 11, so that a vibration signal of the micro-seismic activity of the underground rock mass can be detected sharply.
The fiber bragg grating temperature sensor 12 is mounted on the isolation plate e 135 inside the FBG lower outer tube 13 for measuring temperature variation inside the deep rock-soil body.
The utility model discloses in, whole FBG outer tube seals completely, abandons the influence of other environment of outside to the sensor to also through the division board completely cut off between the sensor, abandon the influence each other between the sensor. In addition, all the fiber grating sensors are connected through one optical fiber, and the grating center wavelength of each sensor is different, so that the accuracy of the sensors can be improved, the data interference and loss in the transmission process can be reduced, and the reliability and safety of data can be improved.
The utility model discloses the part or the structure that do not specifically describe adopt prior art or current product can, do not do here and describe repeatedly.
The above-mentioned only be the embodiment of the utility model discloses a not consequently restriction the patent scope of the utility model, all utilize the equivalent structure or the equivalent flow transform of what the specification content was done, or directly or indirectly use in other relevant technical field, all the same reason is included in the patent protection scope of the utility model.
Claims (10)
1. The utility model provides a many reference amounts of deep rock mass fiber grating integrated test pipe which characterized in that, includes the FBG outer tube, be provided with stress sensing module on the FBG outer tube, be provided with many physical parameter sensing module in the FBG outer tube, stress sensing module links to each other and is connected to external equipment with many physical parameter sensing module.
2. The deep rock mass multi-parameter fiber grating comprehensive test tube of claim 1, wherein the FBG outer tube comprises an FBG upper outer tube, an FBG upper connection outer tube, an FBG lower connection outer tube and an FBG lower outer tube which are sequentially arranged from top to bottom.
3. The deep rock mass multi-parameter fiber grating comprehensive test tube of claim 2, characterized in that, the stress sensing module includes fiber grating ground stress sensor, fiber grating stress sensor one and fiber grating stress sensor two, the outer tube links to each other with fiber grating ground stress sensor upper portion on the FBG, it links to each other to connect the outer tube on fiber grating ground stress sensor lower part and the FBG, connect the outer tube lower part on the FBG and install fiber grating stress sensor one, connect the outer tube under fiber grating stress sensor lower part and the FBG and link to each other, connect the outer tube lower part under the FBG and install fiber grating stress sensor two, many physics parameter sensing module are installed to two lower parts of fiber grating stress sensor.
4. The deep rock mass multi-parameter fiber grating comprehensive test tube is characterized in that threads are arranged on the upper portion and the lower portion of the fiber grating ground stress sensor, the first upper thread on the upper portion of the fiber grating ground stress sensor is connected with the threads on the upper outer tube of the FBG on the outer tube of the FBG, the first lower thread on the lower portion of the fiber grating ground stress sensor is connected with the upper outer tube of the FBG, and the fiber grating ground stress sensor is tightly combined with an external surrounding rock mass and interacts with the external surrounding rock mass.
5. The deep rock mass multi-parameter fiber bragg grating comprehensive test tube is characterized in that an upper thread II at the upper part of a fiber bragg grating stress sensor is connected with an upper FBG connecting outer tube, a lower thread II at the lower part of the fiber bragg grating stress sensor is connected with a lower FBG connecting outer tube, and the sensitive direction of the fiber bragg grating stress sensor I is placed in the X direction; the upper thread III on the upper part of the fiber grating stress sensor II is connected with the FBG lower connecting outer tube, the lower thread III on the lower part of the fiber grating stress sensor II is connected with the FBG lower outer tube, and the sensitive direction of the fiber grating stress sensor II is arranged in the Y direction.
6. The deep rock mass multi-parameter fiber grating comprehensive test tube according to claim 2, wherein a twist hole is reserved in the upper half part of the lower outer tube of the FBG, and the fiber grating fluid pressure sensor of the multi-physical-parameter sensing module is communicated with the outside through the twist hole.
7. The deep rock mass multi-parameter fiber bragg grating comprehensive test tube as claimed in claim 2, wherein an electronic gyroscope is mounted inside the outer tube on the FBG, and the electronic gyroscope is connected to external equipment through an outgoing cable of the electronic gyroscope.
8. The deep rock mass multi-parameter fiber grating comprehensive test tube of claim 1, wherein the multi-physical-parameter sensing module comprises a fiber grating fluid pressure sensor, a fiber grating vibration sensor and a fiber grating temperature sensor, a fiber grating stress sensor II is installed on the upper portion of the fiber grating fluid pressure sensor, a fiber grating vibration sensor is installed on the lower portion of the fiber grating fluid pressure sensor, and a fiber grating temperature sensor is installed on the lower portion of the fiber grating vibration sensor.
9. The deep rock mass multi-parameter fiber grating comprehensive test tube according to claim 8, wherein the fiber grating fluid pressure sensor is mounted on a partition plate c inside the outer tube under the FBG, the fiber grating fluid pressure sensor is in two-way communication with the outside, and a partition plate b is mounted on the upper portion of the fiber grating fluid pressure sensor and used for preventing fluid from flowing to other sensors.
10. The deep rock mass multi-parameter fiber grating comprehensive test tube of claim 8, wherein the fiber grating vibration sensor is mounted on a separation plate d inside the outer tube under the FBG, and the separation plate d is rigidly connected with the outer tube of the FBG and the fiber grating vibration sensor; the fiber grating temperature sensor is arranged on an isolation plate e inside the outer tube under the FBG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222769907.7U CN218411509U (en) | 2022-10-20 | 2022-10-20 | Deep rock mass multi-parameter fiber grating comprehensive test tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222769907.7U CN218411509U (en) | 2022-10-20 | 2022-10-20 | Deep rock mass multi-parameter fiber grating comprehensive test tube |
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| Publication Number | Publication Date |
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| CN218411509U true CN218411509U (en) | 2023-01-31 |
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| CN202222769907.7U Active CN218411509U (en) | 2022-10-20 | 2022-10-20 | Deep rock mass multi-parameter fiber grating comprehensive test tube |
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