CN212693644U - Device for simulating degradation of hydro-fluctuation belt of bank slope in reservoir area - Google Patents
Device for simulating degradation of hydro-fluctuation belt of bank slope in reservoir area Download PDFInfo
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- CN212693644U CN212693644U CN202021652785.8U CN202021652785U CN212693644U CN 212693644 U CN212693644 U CN 212693644U CN 202021652785 U CN202021652785 U CN 202021652785U CN 212693644 U CN212693644 U CN 212693644U
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Abstract
The utility model relates to a geological disasters prevention and cure field especially relates to a device that is used for reservoir area bank slope falling zone degradation simulation. Including the experimental box and set up in the inside holder that is used for the splendid attire sample of experimental box, the inside of experimental box is equipped with protecting sheathing from outside to inside in order, insulating shielding shell, high degree of consistency permanent magnet, no magnetic aluminum bottom plate, radio frequency coil, glass tempering pipe and set up the holder that is used for splendid attire rock sample at the experimental box middle part, the radio frequency coil winding is on glass tempering pipe, the holder is located the middle part of experimental box, and the holder includes no magnetic glass steel shell, no magnetic glass steel inner shell and holder screw cap, optic fibre evenly is equipped with 4 groups on the outer wall of no magnetic glass steel inner shell. This technical scheme is used for solving traditional rock degradation experimental box and can not gather the parameter variation of rock inside, does not reach the purpose to rock degradation process real time monitoring to and the not accurate problem of experimental result who reachs.
Description
Technical Field
The utility model relates to a geological disasters prevention and cure field especially relates to a device that is used for reservoir area bank slope falling zone degradation simulation.
Background
The indoor similar model experiment is a commonly used research method for the landslide engineering problem of rock and soil, and has a great effect in the landslide engineering research all the time because the main parameters of an experimental object can be flexibly set according to the research requirement, the main factors of the researched problem are highlighted, the size is reduced compared with the prototype, and the labor and material resources are saved.
Chinese utility model patent CN201720692324.5 discloses a rock degradation model test device, which mainly comprises a sample holding device, a model box bracket, a sample holding plate, a fixing plate and a movable plate. In this publication, the sample holding device can provide lateral pressure for the sample, the loading device provides proper and different constant loads for the test, the heating plate and other components provide required constant temperature for the sample, and in combination with the holes arranged inside the structure, the device can be used for analyzing the deterioration and destruction rules of the rock sample under the water-temperature-force multi-factor coupling condition, and can also simulate the rock deterioration test process under two conditions of continuous water supply and dry-wet circulation by controlling the water inlet process.
However, in the above-mentioned published patent documents, only temperature and pressure parameters affecting the deterioration of the rock can be changed, and the deterioration process of the rock in the bionic environment is simulated, but parameter changes inside the rock cannot be collected, and the deterioration process of the rock cannot be monitored in real time, so that the obtained experimental result is not accurate enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to prior art not enough, the utility model aims to provide a device that is used for reservoir area bank slope hydro-fluctuation belt degradation simulation for solve traditional rock degradation experimental box and can not gather the parameter variation of rock inside, can not lead to the not accurate problem of the experimental result that reachs to rock degradation process real time monitoring.
In order to achieve the purpose, the utility model provides a device for reservoir area bank slope falling zone degradation simulation, including the experimental box and set up the holder that is used for splendid attire sample in the experimental box, the inside of experimental box is equipped with protective housing from outside to inside in order, insulating shielding shell, high degree of consistency permanent magnet, no magnetic aluminum bottom plate, radio frequency coil, glass tempering pipe and the holder that is used for splendid attire rock sample that sets up in the middle part of the experimental box, radio frequency coil twines on glass tempering pipe;
the clamp holder is located the middle part of experimental box, and the clamp holder includes no magnetic glass steel shell, no magnetic glass steel inner shell and clamp holder screw cap, be equipped with optic fibre between no magnetic glass steel shell and the no magnetic glass steel inner shell, optic fibre evenly is equipped with 4 groups on the outer wall of no magnetic glass steel inner shell, and all is equipped with 6 optic fibre sound wave detectors along no magnetic glass steel axial evenly distributed on every group, be equipped with the recess on the outer wall of no magnetic glass steel inner shell top and bottom, be equipped with temperature and humidity sensor and the pressure sensor that all adopts the skew symmetry installation in the recess, temperature and humidity sensor and pressure sensor adopt carbon fiber transmission line to concatenate.
Further, the insulation shielding shell is composed of a non-magnetic aluminum plate material with the thickness of 2mm, is in a sealed state, and has the beneficial effect that the insulation shielding shell in the sealed state shields the magnetic flux leakage of the permanent magnet.
Further, be equipped with the copper screw rod of carrying out the isolation between radio frequency coil and the no magnetism aluminium bottom plate, the clearance that the copper screw rod keeps apart the two is 15mm, the reason of keeping apart the two is, avoids current oscillation, makes the signal that nuclear magnetic resonance signal processor received more stable.
Further, the high-uniformity permanent magnet is formed by combining N38SH NdFeB materials, the number of the high-uniformity permanent magnets is 16, and the plane polarization directions of the high-uniformity permanent magnets are the same, because the permanent magnet blocks are arranged along the circumferential direction according to the bipolar magnetic line principle, a uniform magnetic field can be generated inside the whole magnet system.
Further, no magnetism aluminium bottom plate is hollow annular structure, and has 16 screw holes at its both ends symmetrical arrangement, all be equipped with the copper screw in the screw hole, high degree of consistency permanent magnet setting is between two adjacent copper screws, the copper screw includes double threaded screw, double threaded screw's both ends all are equipped with the nut, utilize screwing and the unscrewing of double threaded screw both ends nut, can adjust the angle that is located high degree of consistency permanent magnet between two adjacent screws to fix.
Further, the cross sectional shape of holder screw cap is the T shape, and be equipped with in its bottom with no magnetic glass steel inner shell inside wall internal thread assorted external screw thread, still be equipped with light source joint, light signal outlet joint, air pressure boost heating connector, liquid nitrogen connector, liquid connector and bleeder line connector on the holder screw cap, carbon fiber transmission line and optic fibre are connected with the signal transmission connects the electricity, set up corresponding joint, and the external equipment of being convenient for changes holder inside temperature, pressure isoparametric, and can also change to inside temperature, pressure isoparametric to and the inside relevant parameter of rock sample, collect.
The utility model discloses a theory of operation does: parameters such as temperature and pressure in the holder are changed through an external device, the ecological environment of a rock sample in the nature is simulated to enable the rock sample to be degraded, so that the internal structure of the rock sample is slightly changed, a radio frequency coil in an experimental box generates a radio frequency magnetic field with the Larmor frequency of 12MHz, protons in the rock sample are excited to generate energy level transition, a nuclear magnetic resonance signal is received through an external nuclear magnetic resonance signal processor, parameters such as porosity, water saturation and permeability of the rock body can be detected, 24 optical fiber acoustic wave sensors in the experimental box transmit collected rock cracking acoustic signals to an external electrically connected upper computer, and the space position, cracking time, cracking energy and the like of the sample cracking are calculated through software inversion of the upper computer.
The utility model discloses an useful part lies in: under the auxiliary action of an external upper computer and a signal processing device, the experimental box can realize real-time monitoring and important parameter acquisition on the change of rock mechanical properties in the process of rock degradation.
Drawings
Fig. 1 is a schematic diagram of the internal structure of the experimental box according to the embodiment of the present invention.
Fig. 2 is a schematic side view of the experimental box according to the embodiment of the present invention.
Fig. 3 is a schematic structural view of a holder according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the experimental box 1, a protective outer shell 11, an insulating shielding outer shell 12, a high-uniformity permanent magnet 13, a non-magnetic aluminum bottom plate 14, a copper screw 15, a copper screw 152, a radio frequency coil 16, a toughened glass tube 17, a holder 2, a non-magnetic glass fiber reinforced plastic outer shell 21 and a non-magnetic glass fiber reinforced plastic inner shell 22, an optical fiber 23, an optical fiber acoustic wave detector 24, a temperature and humidity sensor 25, a pressure sensor 26, a fiber wire transmission line 27, a rock sample 28, a holder threaded cover 29, a light source connector 291, an optical signal outlet connector 292, a signal transmission connector 293, an air pressurizing and heating connector 294, a liquid nitrogen connector 295, a liquid connector 296 and a drainage tube connector 297.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The specific implementation process is as follows:
as shown in the figures 1 and 2, the experimental box 1 is composed of a protective shell 11, an insulating shielding shell 12, a high-uniformity permanent magnet 13, a non-magnetic aluminum bottom plate 14, a copper screw 15, a copper screw 152, a radio frequency coil 16 and a toughened glass tube 17. The experimental box 1 is 280 mm multiplied by 480mm3The cuboid is connected with the nuclear magnetic resonance signal processor and the flow controller, and is mainly used for collecting and transmitting nuclear magnetic resonance signals, acoustic emission signals, temperature, pressure and humidity data.
The non-magnetic aluminum bottom plate 14 is of a circular hollow structure, the outer diameter is 235mm, the inner diameter is 210mm, the thickness is 3mm, 16 holes with the thickness of 8mm are uniformly distributed, and the direction and the position of the high-uniformity permanent magnet 13 are fixed through copper screws 152. The copper screw 15 is an M8 copper screw, the diameter of the copper screw is 8mm, the length of the copper screw is 385mm, and nuts are arranged at two ends of the copper screw.
The radio frequency coil 16 is used for generating a radio frequency magnetic field with a larmor frequency of 12MHz, exciting protons in the rock sample to generate energy level transitions, then receiving a nuclear magnetic resonance signal, and observing a nuclear magnetic resonance phenomenon. The radio frequency coil adopts a solenoid structure, is a copper wire with the diameter of 0.8mm, is wound on the toughened glass tube 17, and has the coil turns of 50, the wire spacing of 5mm and the length of 300 mm. As a part of the resonant circuit, the distance between the radio frequency coil and the non-magnetic aluminum bottom plate 14 is 15mm, and the radio frequency coil is isolated from the non-magnetic aluminum bottom plate through the copper screw rod 15, so that the instability of receiving nuclear magnetic resonance signals caused by current oscillation is avoided. The toughened glass tube 17 is a glass tube with the thickness of 3mm and the inner diameter of 190mm, and the radio frequency coil 16 is uniformly wound on the glass tube.
The protective shell 11 is forged from 5Mn15 nonmagnetic steel with the thickness of 3mm to be 280 multiplied by 480mm3The cuboid has the characteristics of water resistance, corrosion resistance and high temperature resistance. The insulation shielding shell 12 is made of a non-magnetic aluminum plate material with the thickness of 2mm, and the shell is sealed and used for fixing the permanent magnet 13 with high uniformity and shielding magnetic leakage of the permanent magnet. The high-uniformity permanent magnet 13 is composed of 16 pieces of N38SH neodymium iron boron material, the single magnet is 40 multiplied by 360mm3The remanence of the cuboid is 1.23-1.27 Tesla, the coercive force is 876-939 kA/m, the intrinsic coercive force is 1600kA/m, and the maximum magnetic energy product is 287-310 kJ/m3The maximum working temperature is 150 ℃. The planar polarization direction of each permanent magnet block is the same. The permanent magnet blocks are arranged in a circumferential direction according to the dipole magnetic line principle, so that a uniform magnetic field can be generated inside the entire magnet system.
As shown in fig. 3, the holder 2 mainly comprises an outer shell 21 and an inner shell 22 of nonmagnetic glass fiber reinforced plastic, an optical fiber 23, an optical fiber acoustic wave detector 24, a temperature and humidity sensor 25, a pressure sensor 26, a fiber line transmission line 27, a rock sample 28 and a holder screw cap 29.
The holder 2 is a cylindrical tubular structure with an outer diameter of 180mm, an inner diameter of 110mm and a length of 450mm, and the rock sample 28 is placed in a central cavity of the holder. To ensure the accuracy and completeness of the experimental data, the rock sample 28 is processed into a cylinder with a diameter of 100mm and a length of 400 mm. The distance between the nonmagnetic glass fiber reinforced plastic outer shell 21 and the nonmagnetic glass fiber reinforced plastic inner shell 22 is 250mm, and a temperature-resistant and high-pressure-resistant material with the thickness of 5mm is adopted, so that the conditions of the temperature of minus 40 ℃ to 120 ℃ and the pressure of 0MPa to 60MPa are at least met. The inner nonmagnetic GRP shell 22 is threaded clockwise and is connected to the gripper cap 29 to enclose the rock sample 8. The optical fiber 23 is arranged between the outer shell 21 and the inner shell 22, and is adhered to the inner shell 22 by glass cement. The optical fiber 23 is respectively connected with 6 optical fiber sound wave detectors 24 in the directions of 0 degree, 90 degrees and 270 degrees, the optical fiber sound wave detectors 24 adopt an optical fiber Bragg grating structure, the frequency response range is 3 Hz-800 Hz, the dynamic range is 120dB, and the optical fiber sound wave detector has the characteristics of parallelism, real-time performance, high resolution, high sensitivity, electromagnetic interference resistance and the like.
The temperature and humidity sensor 25 and the pressure sensor 26 both adopt MEMS process chips. The temperature and humidity sensor 25 and the pressure sensor 26 are installed in an oblique symmetry manner and are respectively installed in the grooves at the top and the tail of the nonmagnetic glass fiber reinforced plastic inner shell 22. The temperature and humidity sensor 25 adopts an SHT11 intelligent humidity temperature sensor, the external dimension is 7.6(mm) × 5(mm) × 2.5(mm), the measurement relative humidity range is 0-100%, the resolution is 0.03% RH, and the highest precision is +/-2% RH; the measuring temperature range is-40 ℃ to +123.8 ℃, and the resolution is 0.01 ℃. The pressure sensor 26 adopts an MEMS process chip, a doped polysilicon film is used as a strain resistor to form a Wheatstone bridge, the outer diameter is 5mm, the pressure testing range is 0-6 Mpa, the working temperature is-40-220 ℃, and the measuring precision reaches 0.01-0.03% FS. The data collected by the temperature and humidity sensor 25 and the pressure sensor 26 are connected with the threaded cap signal transmission connector 293 through the carbon fiber line transmission line 27.
The holder screw cap 29 is formed of high strength toughened nylon plastic into two interconnected cylindrical shapes, the cap being 200mm in diameter, 30mm in length, 110mm in diameter of the threaded portion and 60mm in length, and is rotated into the holder 2 in a clockwise direction to seal the rock sample 28 within the holder after tightening. The holder screw cap 29 is respectively provided with a light source connector 291, a light signal outlet connector 292, a signal transmission connector 293, an air pressurization heating connector 294, a liquid nitrogen connector 295, a liquid connector 296 and a bleeder pipe connector 297. The light source connector 291 is a standard QBH connector and is connected with the optical fiber 23, and the connector is designed to be a tapered lead-in connector, so that the connector can be easily connected with a laser, and the optical fiber can be safely fastened within 10 micrometers. The optical signal outlet 292 is an ST fiber interface, supporting hot plugging. The signal transmission joint 293 adopts an M12X-Code 8-core female joint, has the protection grade of IP67, and has a waterproof function. Air pressure boost heating connector 294, liquid nitrogen connector 295, liquid connector 296, bleeder line connector 297 all adopt direct cutting ferrule formula stainless steel to connect, and the sleeve pipe external diameter is 12mm, connects inside honeycomb duct diameter 7mm, realizes the fluidic accurate control of different grade type.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A device for reservoir bank slope hydro-fluctuation belt degradation simulation is characterized in that: the device comprises an experiment box and a clamp holder which is arranged in the experiment box and used for containing samples, wherein a protective shell, an insulating shielding shell, a high-uniformity permanent magnet, a non-magnetic aluminum bottom plate, a radio frequency coil, a glass tempering tube and the clamp holder which is arranged in the middle of the experiment box and used for containing rock samples are sequentially arranged in the experiment box from outside to inside;
the clamp holder is located the middle part of experimental box, and the clamp holder includes no magnetic glass steel shell, no magnetic glass steel inner shell and clamp holder screw cap, be equipped with optic fibre between no magnetic glass steel shell and the no magnetic glass steel inner shell, optic fibre evenly is equipped with 4 groups on the outer wall of no magnetic glass steel inner shell, and all is equipped with 6 optic fibre sound wave detectors along no magnetic glass steel axial evenly distributed on every group, be equipped with the recess on the outer wall of no magnetic glass steel inner shell top and bottom, be equipped with temperature and humidity sensor and the pressure sensor that all adopts the skew symmetry installation in the recess, temperature and humidity sensor and pressure sensor adopt carbon fiber transmission line to concatenate.
2. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 1, wherein: the insulation shielding shell is composed of a non-magnetic aluminum plate material with the thickness of 2mm, and the insulation shielding shell is in a sealed state.
3. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 1, wherein: and a copper screw for isolation is arranged between the radio frequency coil and the non-magnetic aluminum bottom plate, and the copper screw isolates the radio frequency coil from the non-magnetic aluminum bottom plate by a gap of 15 mm.
4. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 1, wherein: the high-uniformity permanent magnet is formed by combining N38SH neodymium iron boron materials, the number of the high-uniformity permanent magnets is 16, and the plane polarization directions of the high-uniformity permanent magnets are the same.
5. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 1 or 4, wherein: the non-magnetic aluminum bottom plate is of a hollow annular structure, 16 screw holes are symmetrically arranged at two ends of the non-magnetic aluminum bottom plate, copper screws are arranged in the screw holes, and the high-uniformity permanent magnet is arranged between the two adjacent copper screws.
6. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 5, wherein: the copper screw comprises a double-end screw rod, and nuts are arranged at two ends of the double-end screw rod.
7. The device for degradation simulation of the hydro-fluctuation belt of the reservoir bank slope according to claim 1, wherein: the cross-sectional shape of holder screw cap is T shape, and be equipped with in its bottom with no magnetic glass steel inner shell inside wall internal thread assorted external screw thread, the holder screw cap is last still to be equipped with light source joint, light signal outlet joint, air pressure boost heating connector, liquid nitrogen connector, liquid connector and the earial drainage pipe connector, carbon fiber transmission line and optic fibre are connected with the signal transmission joint electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021652785.8U CN212693644U (en) | 2020-08-11 | 2020-08-11 | Device for simulating degradation of hydro-fluctuation belt of bank slope in reservoir area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021652785.8U CN212693644U (en) | 2020-08-11 | 2020-08-11 | Device for simulating degradation of hydro-fluctuation belt of bank slope in reservoir area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212693644U true CN212693644U (en) | 2021-03-12 |
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ID=74901863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021652785.8U Expired - Fee Related CN212693644U (en) | 2020-08-11 | 2020-08-11 | Device for simulating degradation of hydro-fluctuation belt of bank slope in reservoir area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212693644U (en) |
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2020
- 2020-08-11 CN CN202021652785.8U patent/CN212693644U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210312 Termination date: 20210811 |
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| CF01 | Termination of patent right due to non-payment of annual fee |