CN114034658A - Device and method for detecting sandstone degree of dolomite - Google Patents
Device and method for detecting sandstone degree of dolomite Download PDFInfo
- Publication number
- CN114034658A CN114034658A CN202210024835.5A CN202210024835A CN114034658A CN 114034658 A CN114034658 A CN 114034658A CN 202210024835 A CN202210024835 A CN 202210024835A CN 114034658 A CN114034658 A CN 114034658A
- Authority
- CN
- China
- Prior art keywords
- reflector
- light
- dolomite
- degree
- infrared
- 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.)
- Granted
Links
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 106
- 239000010459 dolomite Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims description 26
- 238000001514 detection method Methods 0.000 claims abstract description 59
- 238000012545 processing Methods 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000003595 spectral effect Effects 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000002329 infrared spectrum Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 10
- 239000000292 calcium oxide Substances 0.000 description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 238000001228 spectrum Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N2021/3595—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using FTIR
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a dolomite desertification degree detection device and a dolomite desertification degree detection method, which comprise a shell, an infrared light source, a spectroscope, a first reflector, a second reflector, a third reflector, a fourth reflector, a displacement adjusting mechanism, a processing control module and a power supply module, wherein the infrared light source, the spectroscope, the first reflector, the second reflector, the third reflector and the fourth reflector are arranged in the shell; the first reflecting mirror is arranged on a reflecting light path of the spectroscope, the second reflecting mirror is arranged on a transmitting light path of the spectroscope, the third reflecting mirror is arranged on the second transmitting light path, and the fourth reflecting mirror is arranged on a reflecting light path of the dolomite to be detected; the two beams of light which generate interference are received by the processing control module, the total intensity of the electric signals corresponding to the optical signals is obtained through processing, and finally the sanding degree is judged according to the total intensity of the electric signals. According to the invention, the dolomitic sandstone grading detection can be carried out only in milliseconds, so that the detection speed and the detection precision are greatly improved.
Description
Technical Field
The invention relates to the technical field of spectroscopy, mechanical detection and material analysis, in particular to a dolomite desertification degree detection device and method.
Background
The dolomite sandstone is a typical special unfavorable geological phenomenon in the Yuxi area, and a dolomite cavern section penetrated by a tunnel has the characteristic of strong sandstone. The desertification not only causes the deterioration of rock strength and the reduction of rock quality, but also can be used as an adverse geological boundary to influence the stability of side slopes and underground caverns, can cause the problems of difficult cave formation, poor forming quality, collapse, large deformation and the like, and particularly can easily generate secondary geological disasters such as gushing (flowing) sand, debris flow in a cave and the like at a water-rich cave section, so that the stability problem of surrounding rocks of the tunnel is prominent, the potential safety hazard is amplified, the engineering disposal difficulty is increased, and further the problems of delay of engineering construction progress, increase of engineering investment and the like are caused.
At present, no definite quantitative detection method exists for determining the sanding grade and thus the support mode on site. Generally, field sampling and rough visual inspection are adopted, but the precision is poor; or by laboratory means such as SEM (scanning Electron microscope), but the time required is long. At present, a method for rapidly detecting and quantifying the sanding grade on site to help rapidly determine the support strength on site is not available.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a dolomite desertification degree detection device and method, which aim to solve the problems of low detection precision and long detection time of the prior art.
In a first aspect, the present invention provides a dolomite desertification degree detection apparatus, including:
an infrared light source;
the beam splitter is arranged on the emergent light side of the infrared light source, and the incident surface of the beam splitter and the emergent light of the infrared light source are obliquely arranged;
the first reflecting mirror is arranged on the reflected light side of the spectroscope and is perpendicular to the reflected light of the spectroscope;
a second reflecting mirror disposed on the first transmitted light side of the beam splitter, the second reflecting mirror being disposed perpendicular to the first transmitted light of the beam splitter; the first transmitted light is light which is directly transmitted by the emergent light of the infrared light source through a spectroscope;
the third reflector is arranged on the second transmission light side of the spectroscope, the third reflector and the second transmission light of the spectroscope are obliquely arranged, and the reflected light of the third reflector is aligned with the dolomite to be detected and is obliquely arranged; the second transmission light is light which is obtained by reflecting emergent light of the infrared light source to the first reflecting mirror through the light splitter and then reflecting the emergent light to the light splitter after transmission through the first reflecting mirror;
the incident surface of the fourth reflector is obliquely arranged with the dolomite to be detected, so that the reflected light passing through the surface of the dolomite to be detected is incident to the fourth reflector;
a displacement adjusting mechanism connected with the second reflective mirror; the displacement adjusting mechanism is used for controlling the second reflector to move along the optical path of the first transmitted light during detection;
the processing control module is connected with the displacement adjusting mechanism and arranged on a reflection light path of the fourth reflecting mirror; the processing control module is used for receiving the reflected light of the fourth reflector, processing the reflected light, analyzing and judging the reflected light to obtain the desertification degree of the dolomite to be detected; and is used for controlling the movement of the displacement regulating mechanism;
and the power supply module is respectively connected with the displacement adjusting mechanism and the processing control module.
Further, the infrared light source covers near infrared and middle infrared bands.
Furthermore, the included angle between the reflected light of the third reflector and the third reflector is 15 degrees; and the incident light of the fourth reflector forms an included angle of 15 degrees with the fourth reflector.
Furthermore, the first reflector, the second reflector, the third reflector and the fourth reflector are all plated with gold films.
Further, the spectroscope is plated with a zinc selenide film.
Further, the device still includes the shell, infrared source, first speculum, second speculum, third speculum, fourth speculum, displacement adjustment mechanism and processing control module all are located in the shell be equipped with logical unthreaded hole on the shell, the incident light of the reflection light sum fourth speculum of third speculum all passes logical unthreaded hole.
Furthermore, glass is arranged at the light through hole and is made of glass plated with a zinc selenide antireflection film.
The invention also provides a method for detecting the sandstone degree of dolomite by using the device for detecting the sandstone degree of dolomite, which comprises the following steps:
placing the dolomite to be detected at a detection position, and controlling the second reflector to move by controlling the displacement adjusting mechanism while the infrared light source is started during detection; the detection position corresponds to the third reflector and the fourth reflector, so that the reflected light of the third reflector is incident to the dolomite to be detected, and the reflected light passing through the surface of the dolomite to be detected is incident to the fourth reflector;
the processing control module receives the interference signal and processes the interference signal to obtain the total intensity of the electric signal corresponding to the interference signal
；
According to the total intensity of the electric signal
And total intensity of electric signal
Judging the sanding degree of the dolomite to be detected; wherein the total intensity of the electrical signal
Total intensity of electrical signal for completely unsanitized dolomite.
Further, before detection, the dolosts to be detected are polished by abrasive paper to be smooth.
Further, the total intensity of the electrical signal
The average value of the total intensity of the electric signals of the front surface, the top surface and the bottom surface of the dolomite to be detected is obtained.
Further, the total intensity of the electrical signal
Or
The calculation formulas of (A) and (B) are as follows:
wherein the content of the first and second substances,
which represents the total intensity of the electrical signal,
representing the spectral intensity of the infrared spectrum at an infrared wavenumber of 420,
representing the spectral intensity of an infrared spectrum at an infrared wavenumber of 350,
representing an infrared wave number of
The spectral intensity of the infrared spectrum of (a),
which represents the wave number of the incident light,
representing the optical path difference caused by the second mirror movement,
indicating the phase difference caused by the movement of the second mirror,
indicating different optical path differences
The intensity of the corresponding light is,
indicating the amplitude of the light wave.
Further, the determination conditions of the desertification degree of the dolomite to be detected are as follows:
when in use
Then, the degree of desertification of dolostone is 0;
when in use
Then, the degree of desertification of the dolostone is 1;
when in use
Degree of sanding of dolomite, etcGrade 2;
when in use
Then, the degree of desertification of dolostone is 3;
when in use
The sandstone was classified to have a sanding degree of 4.
The invention has the beneficial effects that:
according to the device and the method for detecting the dolomite sanding degree, provided by the invention, the main reason of the dolomite sanding is that calcium oxide in dolomite crystals is dissolved, the device is designed according to the reason of the dolomite sanding, based on the Fourier spectrum measurement principle, the dolomite sanding is subjected to sanding grading by adopting the spectral analysis principle, and the dolomite sanding grading detection can be carried out only in milliseconds, so that the detection speed and the detection precision are greatly improved, the strength analysis can be quickly carried out on a construction site according to the determined grading, and a supporting mode is established; by adopting the method, the time and the economic cost for detecting and judging the dolomite desertification grade on the engineering construction site can be greatly saved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dolomite sandstone degree detection apparatus in embodiment 1 of the present invention;
the device comprises an infrared light source 1, a first reflector 2, a spectroscope 3, a second reflector 4, a displacement adjusting mechanism 5, a third reflector 6, a fourth reflector 7, dolomite to be detected 8, a shell 9, a light through hole 91 and a display 10, wherein the dotted line with an arrow indicates a light propagation path.
Detailed Description
The technical solutions in the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Example 1
As shown in fig. 1, the device for detecting the sandstone degree of dolomite provided by the embodiment of the present invention includes a housing 9, an infrared light source 1 disposed in the housing 9, a spectroscope 3, a first reflector 2, a second reflector 4, a third reflector 6, a fourth reflector 7, a displacement adjusting mechanism 5, a processing control module, and a power supply module.
The infrared light source 1 is the only light source during detection, and covers two wave bands of near infrared and middle infrared, namely 0.78-25 μm; the spectroscope 3 is arranged at the emergent light side of the infrared light source 1, and the incident surface of the spectroscope 3 and the emergent light of the infrared light source 1 are arranged in an inclined way; the first reflecting mirror 2 is fixedly arranged on the reflected light side of the spectroscope 3 and is vertical to the reflected light of the spectroscope 3; the second reflecting mirror 4 is arranged on the first transmission light side of the spectroscope 3 and is vertical to the first transmission light of the spectroscope 3; the third reflector 6 is arranged on the second transmission light side of the spectroscope 3 and is obliquely arranged with the second transmission light of the spectroscope 3, and the reflected light of the third reflector 6 is aligned with the dolostone 8 to be detected and is obliquely arranged; the fourth reflector 7 is arranged opposite to the third reflector 6, and the incident surface of the fourth reflector 7 is obliquely arranged with the dolomite to be detected 8, so that the reflected light passing through the surface of the dolomite to be detected 8 is incident to the fourth reflector 7; the displacement adjusting mechanism 5 is connected with the second reflector and is used for controlling the second reflector 4 to move along the optical path of the first transmitted light during detection; the processing control module is arranged on a reflection light path of the fourth reflector 7 and is connected with the displacement adjusting mechanism 5; the power supply module is connected with the displacement adjusting mechanism 5 and the processing control module and provides power for the whole device.
The first transmission light is light directly transmitted by the emergent light of the infrared light source 1 through the spectroscope 3; the second transmission light is the light after the emergent light of the infrared light source 1 is reflected to the first reflector 2 through the spectroscope 3 and then reflected to the spectroscope 3 through the first reflector 2.
The housing 9 is provided with a light-passing hole 91, and the light-passing hole 91 is aligned with the reflection surface of the third reflector 6 and the incident surface of the fourth reflector 7, so that the reflected light of the third reflector 6 and the incident light of the fourth reflector 7 both pass through the light-passing hole 91. During detection, the dolomite to be detected 8 is arranged at the light through hole 91, so that the reflected light of the third reflector 6 is aligned with and obliquely arranged on the dolomite to be detected 8, and the incident surface of the fourth reflector 7 is obliquely arranged with the dolomite to be detected 8 and aligned with the reflected light passing through the surface of the dolomite to be detected 8. The housing 9 protects the optical elements from dust contamination, ensuring the safety and stability of the internal structure.
The working process of the dolomite desertification degree detection device is as follows:
the first reflector is arranged on a reflection light path of the spectroscope, the second reflector is arranged on a transmission light path of the spectroscope, the third reflector is arranged on a second transmission light path, the fourth reflector is arranged on the reflection light path of the dolomite to be detected, and the processing control module is positioned on the reflection light path of the fourth reflector. Emergent light of the infrared light source 1 is divided into two beams by the spectroscope 3, wherein one beam is reflected light of the spectroscope 3, the reflected light is reflected to the first reflecting mirror 2, reflected to the spectroscope 3 through the first reflecting mirror 2 in a reverse collimation manner, and transmitted to the third reflecting mirror 6 (namely second transmitted light) through the spectroscope 3, the third reflecting mirror 6 reflects the second transmitted light to the surface of the dolomite 8 to be detected, the surface of the dolomite reflects the light beam to the fourth reflecting mirror 7, and the light beam is reflected by the fourth reflecting mirror 7; the other beam is transmitted light (namely first transmitted light) of the spectroscope 3, the first transmitted light is collimated and reflected to the spectroscope 3 by the second reflecting mirror 4 (in order to generate a phase difference with the second transmitted light, the second reflecting mirror 4 is controlled by the displacement adjusting mechanism 5 to move linearly along the light path of the first transmitted light during detection), is reflected to the third reflecting mirror 6 by the spectroscope 3, is reflected to the surface of the dolomite 8 to be detected by the third reflecting mirror 6, and is reflected to the fourth reflecting mirror 7 by the dolomite surface and is reflected by the fourth reflecting mirror 7; two beams of light beams with phase difference interfere in a space area, interference signals are received by the processing control module, the interference signals are processed to obtain the total electric signal intensity corresponding to the interference signals, and the sanding grade of the dolomite is determined according to the total electric signal intensity and the standard value.
In one embodiment of the present invention, the angle between the incident plane of the beam splitter 3 and the outgoing light of the infrared light source 1 is 45 °, and then α =45 °.
In one embodiment of the present invention, in order to make the light beam incident into the sufficient depth of the dolomite 8 to be detected, the angle β between the reflected light of the third reflector 6 and the third reflector 6 is 15 °, the angle θ between the incident light of the fourth reflector 7 and the fourth reflector 7 is 15 °, then β = θ =15 °, and the small-angle reflector makes it easier for the light beam to penetrate into the sample.
In one embodiment of the present invention, the first reflector 2, the second reflector 4, the third reflector 6 and the fourth reflector 7 are all coated with gold film, which ensures good reflectivity of the infrared band light beam.
In one embodiment of the present invention, the beam splitter 3 is coated with a zinc selenide film to ensure good transmission of the infrared band beam.
In one embodiment of the present invention, glass is disposed at the light-passing hole 91, and the glass is made of glass coated with a zinc selenide antireflection film.
The embodiment of the invention also provides a method for detecting the sandstone sanding degree of the dolomite by using the device for detecting the sandstone sanding degree of the dolomite, which comprises the following steps:
1. calibration when using a detection device for the first time
In order to ensure the accuracy of detection, the device needs to be calibrated before use, and the specific calibration process is as follows: placing a completely unsanized dolomitic rock at the detection location; during detection, the second reflecting mirror 4 is controlled to move by controlling the displacement adjusting mechanism 5 while the infrared light source 1 is started; the processing control module receives the interference signal and processes the interference signal to obtain a pair of interference signalsTotal intensity of the corresponding electric signal
Total intensity of electric signal
The standard value is obtained.
In this embodiment, the detection position corresponds to the third reflector 6 and the fourth reflector 7, so that the reflected light of the third reflector 6 is incident on the dolomite to be detected 8, and the reflected light passing through the surface of the dolomite to be detected 8 is incident on the fourth reflector 7, when the detection device is provided with the shell 9 and the light through hole 91 on the shell 9, the detection position is the light through hole 91, as shown in fig. 1.
In an embodiment of the invention, before detection, the surface of the completely ungritten dolomite is polished smooth by using 1600-mesh, 800-mesh, 400-mesh, 200-mesh and 100-mesh sandpaper respectively, so that the surface of the dolomite is ensured to have good reflectivity, and when the reflected light of the third reflector 6 is incident on the dolomite, the reflected light of the third reflector 6 can be reflected to the fourth reflector 7 through the surface of the dolomite.
2. Detection of Dolomite 8 to be detected after calibration
(1) Detection of
The specific process of detection is as follows: the dolostone 8 to be detected is placed at the detection position (namely, placed at the light through hole 91), and during detection, the second reflector 4 is controlled to move by controlling the displacement adjusting mechanism 5 while the infrared light source 1 is started.
In an embodiment of the invention, before detection, the surface of the dolomite 8 to be detected is polished smooth by using 1600-mesh, 800-mesh, 400-mesh, 200-mesh and 100-mesh sandpaper respectively, so that the good reflectivity of the dolomite surface is ensured, and the reflected light of the third reflector 6 can be reflected to the fourth reflector 7 after passing through the dolomite surface when the reflected light of the third reflector 6 is incident on the dolomite.
(2) Signal reception and processing
The processing control module receives the interference signal and processes the interference signal to obtain the total intensity of the electric signal corresponding to the interference signal
(ii) a According to the total intensity of the electric signal
And total intensity of electric signal
And judging the sanding degree of the dolomite 8 to be detected.
In one embodiment of the invention, the total intensity of the electrical signal
For the total intensity of the electrical signal on the front side of dolostone 8 to be detected
Total intensity of electrical signal of top surface
And total intensity of electrical signal of the bottom surface
Average value of (i), i.e.
The detection error caused by uneven sanding of the dolomite is reduced, and the detection precision is improved.
The main reason for the desertification of the dolomite is that calcium oxide in the dolomite crystals is dissolved, so the desertification degree of the dolomite can be graded by grading the peak intensity of the calcium oxide in the dolomite. According to the record of inorganic nonmetallic material atlas (Wuhan university of Industrial science publishers) edited by Yannan, Yue Wenhai, the analyzed infrared wave beams are 420 and 350 when the sanding grading is carried out, namely the characteristic peaks of calcium oxide, and the spectral intensity of the infrared spectrum with the infrared wave number of 420 and 350 is calculated when the total intensity of the subsequent electric signals is calculated.
Emergent light of the infrared light source 1 is divided into two beams by the spectroscope 3, wherein one beam is reflected light of the spectroscope 3, the reflected light is reflected to the first reflecting mirror 2, reflected to the spectroscope 3 through the first reflecting mirror 2 in a reverse collimation manner, transmitted to the third reflecting mirror 6 through the spectroscope 3, and reflected to the surface of the dolomitic rock 8 to be detected by the third reflecting mirror 6, wherein the second transmitted light is reflected to the surface of the dolomitic rock 8 to be detected (the reflected light at the moment is called as a first infrared light beam); the other beam is the transmission light of the spectroscope 3 (i.e. the first transmission light), the first transmission light is collimated and reflected to the spectroscope 3 by the second reflecting mirror 4, reflected to the third reflecting mirror 6 by the spectroscope 3, and then reflected to the surface of the dolostone 8 to be detected by the third reflecting mirror 6 (the reflected light at this time is called as the second infrared light), the first infrared light and the second infrared light are both reflected to the surface of the dolostone, the molecular structure of calcium oxide is always vibrated, the infrared light with the same frequency as the calcium oxide is absorbed, the intensity of the spectral energy corresponding to the frequency is reduced, and the main cause of the desertification of the dolostone is the dissolution of calcium oxide. Therefore, the spectrum measured by different dolomites 8 to be detected is changed only at the characteristic peak of calcium oxide, and other spectrum information is the same. Therefore, the present invention aims to obtain the correspondence between the frequency and the optical power of the infrared light obtained after the reflection by the dolomitic rock 8 to be detected.
The specific derivation analysis process is as follows:
let the frequency of the infrared light source 1 be
The expression for the time when the two beams of light split by the beam splitter 3 return to the beam splitter 3 again (i.e. the light collimated by the first reflecting mirror 2 and reflected to the beam splitter 3 by the second reflecting mirror 4) can be written as:
wherein the content of the first and second substances,
、
respectively showing the amplitudes of the two beams;
representing the frequency of the light incident on the beam splitter 3,
represents the initial phase of the incident light of the spectroscope 3;
represents the wave number of the incident light of the spectroscope 3;
representing the optical path difference caused by the movement of the second mirror 4,
representing the phase difference caused by the movement of the second mirror 4,
，
represents the wavelength of the incident light;
、
respectively representing the intensity of the two beams.
In the process of repeatedly moving the second reflecting mirror 4, two beams of light split and emitted by the spectroscope 3 interfere in a space region; at the same time, the second reflector 4 is continuously moved, so the optical path difference
The variation causing a variation in the phase difference between the two beams
Thus, different optical path differences can be obtained
Corresponding light intensity information. The processing control module comprises a detector and a processing controller, wherein interference signals detected by the detector are as follows:
wherein the content of the first and second substances,
indicating different optical path differences
The intensity of the corresponding light is,
indicating the amplitude of the light wave. At this time, the light intensity information corresponding to the optical path difference is obtained.
Because the incident light is actually polychromatic light with unfixed wave number, after the wave number of the incident light changes, the light intensity information detected by the detector changes simultaneously, in order to measure the intensity of the whole spectrum signal corresponding to the same optical path difference, the contribution spectrum signal intensity of the whole spectrum frequency needs to be integrated, and the light intensity signal at this moment is recorded as
，
Are variables.
At this time, the signal expression can be written as:
wherein the content of the first and second substances,
is the sum of the alternating and constant direct current intensities and the varying alternating current intensity,
is a changing light intensity of alternating current. Thereafter, here
The spectral intensity of the signal after the reflection by the dolomite is changed, because only the alternating part has a modulation effect on the spectrum, only the alternating part is left in the processing, namely:
meanwhile, the interference signal reaches a peak value when there is no optical path difference, that is:
at this time, the resulting valid signal can be written as:
easy obtaining:
therefore, the method comprises the following steps:
from the euler equation:
on the basis, Fourier transform is carried out to obtain:
because the interference intensity and power spectral density of the light are a pair of fourier transform pairs, the required data to be measured can be obtained.
at calibration, the total intensity of the electrical signal
(ii) a At the time of the detection, the detection is carried out,
the total intensity of the electric signal corresponding to each surface of the dolomite is obtained through the formulas (3), (11) and (12).
In an embodiment of the present invention, the displacement adjusting mechanism 5 is a lead screw and a motor, and the lead screw drives the second reflecting mirror 4 to move linearly along the optical path under the driving of the motor. In order to guarantee the detection speed, the motor should complete the transmission of the whole stroke within 0.5 s. During detection, the dolomite 8 to be detected should be kept stable at the light passing hole 91 for more than 1 s.
(3) Sanding grade or grade determination
According to the total intensity of the electric signal
And total intensity of electric signal
And judging the sanding degree of the dolomite 8 to be detected, wherein the specific judgment conditions are as follows:
when in use
While, dolostone has a degree of desertification rating of 0 (completely unground dolostone);
when in use
Then, the degree of desertification of the dolostone is 1;
when in use
Then, the degree of desertification of the dolostone is graded as 2;
when in use
Then, the degree of desertification of dolostone is 3;
when in use
The sandstone was classified to have a sanding degree of 4.
The processing control module further comprises a memory and a display 10, wherein different rock mechanical parameter databases are stored in the memory, the mechanical parameters comprise the desertification grade and the corresponding elastic modulus, Poisson's ratio, fracture toughness, uniaxial compressive strength, uniaxial tensile strength, rock internal friction angle and cohesive force, and when the desertification grade or the desertification degree of the dolomite is detected, the corresponding other mechanical parameters are displayed on the display 10.
The mechanical parameter database also comprises typical pictures and character characteristics of the dolomite with the desertification grade of 0-4 for the comparison and reference of users.
The device for detecting the sandstone desertification degree of the dolomite is also communicated with a third-party cloud database, and is used for searching engineering standards and construction cases such as support, excavation and the like of the desertified dolomite and providing reference for a user.
Example 2
(1) Calibration should be performed when the device for detecting the degree of sandstone of dolomite as described in example 1 is used for the first time. The specific calibration steps are as follows: taking a piece of completely ungritted dolomite on the site, polishing the surface of the dolomite with sand paper of 1600 meshes, 800 meshes, 400 meshes, 200 meshes and 100 meshes respectively, and placing the dolomite at the through hole of the device to obtain the dolomite
The value was regarded as a standard value.
(2) After calibration, selecting a sanded dolomite sample to be detected, polishing the top surface, the bottom surface and the front surface of the sanded dolomite sample respectively with 1600-mesh, 800-mesh, 400-mesh, 200-mesh and 100-mesh sand paper, and placing the sanded dolomite sample at a through hole to obtain the sanded dolomite sample
、
、
Value, get
、
、
Is obtained as an average of
(i.e. the first measurement
) Re-check
And a standard value
Determining the sand grade of the sample according to the corresponding relation.
During measurement, the sample is required to be stably placed at the light through hole for more than 0.5 s.
(3) Taking two samples at the same position on the site, repeating the step (2) twice (namely, measuring for the second time and the third time)
) To obtain
. If it is the second time
For the first time
Deviation value of and the third time
For the first time
All are less than
If the measured experimental result is reasonable, the three times of the experiment are taken
Is obtained as an average of
Comparison of
And standard value
Thereby determining the sanding grade.
Table 1 shows the change of the composition according to the sandstone graining degree, as an evidence of the feasibility of the present invention, which is determined by XRD (X-ray diffraction) experiments.
The results of this experiment were determined according to the X-ray diffraction analysis method of the relative content of clay minerals in sedimentary rock SY-T5163-1995.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A dolomite sandstone degree detection device, its characterized in that includes:
an infrared light source;
the beam splitter is arranged on the emergent light side of the infrared light source, and the incident surface of the beam splitter and the emergent light of the infrared light source are obliquely arranged;
the first reflecting mirror is arranged on the reflected light side of the spectroscope and is perpendicular to the reflected light of the spectroscope;
a second reflecting mirror disposed on the first transmitted light side of the beam splitter, the second reflecting mirror being disposed perpendicular to the first transmitted light of the beam splitter; the first transmitted light is light which is directly transmitted by the emergent light of the infrared light source through a spectroscope;
the third reflector is arranged on the second transmission light side of the spectroscope, the third reflector and the second transmission light of the spectroscope are obliquely arranged, and the reflected light of the third reflector is aligned with the dolomite to be detected and is obliquely arranged; the second transmission light is light which is obtained by reflecting emergent light of the infrared light source to the first reflecting mirror through the light splitter and then reflecting the emergent light to the light splitter after transmission through the first reflecting mirror;
the incident surface of the fourth reflector is obliquely arranged with the dolomite to be detected, so that the reflected light passing through the surface of the dolomite to be detected is incident to the fourth reflector;
a displacement adjusting mechanism connected with the second reflective mirror; the displacement adjusting mechanism is used for controlling the second reflector to move along the optical path of the first transmitted light during detection;
the processing control module is connected with the displacement adjusting mechanism and arranged on a reflection light path of the fourth reflecting mirror; the processing control module is used for receiving the reflected light of the fourth reflector, processing the reflected light, analyzing and judging the reflected light to obtain the desertification degree of the dolomite to be detected; and is used for controlling the movement of the displacement regulating mechanism;
and the power supply module is respectively connected with the displacement adjusting mechanism and the processing control module.
2. The dolomite sanding degree detection apparatus according to claim 1, wherein the infrared light source covers both near infrared and mid infrared bands.
3. The dolomite sandstone degree detection device according to claim 1, wherein an included angle between the reflected light of the third reflector and the third reflector is 15 °; and the incident light of the fourth reflector forms an included angle of 15 degrees with the fourth reflector.
4. The dolomite sanding degree detection apparatus according to claim 1, wherein the first reflector, the second reflector, the third reflector and the fourth reflector are all plated with a gold film; the spectroscope is plated with a zinc selenide film.
5. The dolomite sandstone degree detection device according to any one of claims 1 to 4, further comprising a housing, wherein the infrared light source, the first reflector, the second reflector, the third reflector, the fourth reflector, the displacement adjustment mechanism and the processing control module are all located in the housing, a light through hole is formed in the housing, and the reflected light of the third reflector and the incident light of the fourth reflector both pass through the light through hole; and glass is arranged at the light through hole and is made of glass plated with a zinc selenide antireflection film.
6. A method for detecting the sandstone sanding degree of dolomite according to any one of claims 1 to 5, comprising the following steps:
placing the dolomite to be detected at a detection position, and controlling the second reflector to move by controlling the displacement adjusting mechanism while the infrared light source is started during detection; the detection position corresponds to the third reflector and the fourth reflector, so that the reflected light of the third reflector is incident to the dolomite to be detected, and the reflected light passing through the surface of the dolomite to be detected is incident to the fourth reflector;
the processing control module receives the interference signal and processes the interference signal to obtain the total intensity of the electric signal corresponding to the interference signal
；
According to the total intensity of the electric signal
And total intensity of electric signal
Judging the sanding degree of the dolomite to be detected; in which telecommunications are carried outTotal strength of horn
Total intensity of electrical signal for completely unsanitized dolomite.
7. The method for conducting dolomite sandstone detection according to claim 6, wherein before the detection, the dolomite to be detected is polished smooth by sand paper.
8. The method of conducting dolomite sandstone detection as claimed in claim 6, wherein said electrical signal total intensity
The average value of the total intensity of the electric signals of the front surface, the top surface and the bottom surface of the dolomite to be detected is obtained.
9. The method of conducting dolomite sandstone detection as claimed in claim 6, wherein said electrical signal total intensity
Or
The calculation formulas of (A) and (B) are as follows:
wherein the content of the first and second substances,
which represents the total intensity of the electrical signal,
representing the spectral intensity of the infrared spectrum at an infrared wavenumber of 420,
representing the spectral intensity of an infrared spectrum at an infrared wavenumber of 350,
representing an infrared wave number of
The spectral intensity of the infrared spectrum of (a),
which represents the wave number of the incident light,
representing the optical path difference caused by the second mirror movement,
indicating the phase difference caused by the movement of the second mirror,
indicating different optical path differences
The intensity of the corresponding light is,
indicating the amplitude of the light wave.
10. The method for detecting the sandstone degree of dolomite according to any one of claims 6 to 9, wherein the conditions for judging the sandstone degree of dolomite to be detected are as follows:
when in use
Then, the degree of desertification of dolostone is 0;
when in use
Then, the degree of desertification of the dolostone is 1;
when in use
Then, the degree of desertification of the dolostone is graded as 2;
when in use
Then, the degree of desertification of dolostone is 3;
when in use
The sandstone was classified to have a sanding degree of 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024835.5A CN114034658B (en) | 2022-01-11 | 2022-01-11 | Device and method for detecting sandstone degree of dolomite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024835.5A CN114034658B (en) | 2022-01-11 | 2022-01-11 | Device and method for detecting sandstone degree of dolomite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114034658A true CN114034658A (en) | 2022-02-11 |
| CN114034658B CN114034658B (en) | 2022-05-03 |
Family
ID=80141594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210024835.5A Expired - Fee Related CN114034658B (en) | 2022-01-11 | 2022-01-11 | Device and method for detecting sandstone degree of dolomite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114034658B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183491A (en) * | 2006-03-14 | 2011-09-14 | 王辉 | Detecting device for internal structure of jewelry |
| US8830475B1 (en) * | 2013-08-19 | 2014-09-09 | National Cheng Kung University | Interferometer and spatial interference fourier transform spectrometer |
| CN212301314U (en) * | 2020-05-27 | 2021-01-05 | 上海秦璞生物科技有限公司 | Flour spectrum detector |
| CN113791189A (en) * | 2020-05-25 | 2021-12-14 | 中国石油天然气股份有限公司 | Dolomatization process identification method and device |
-
2022
- 2022-01-11 CN CN202210024835.5A patent/CN114034658B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183491A (en) * | 2006-03-14 | 2011-09-14 | 王辉 | Detecting device for internal structure of jewelry |
| US8830475B1 (en) * | 2013-08-19 | 2014-09-09 | National Cheng Kung University | Interferometer and spatial interference fourier transform spectrometer |
| CN113791189A (en) * | 2020-05-25 | 2021-12-14 | 中国石油天然气股份有限公司 | Dolomatization process identification method and device |
| CN212301314U (en) * | 2020-05-27 | 2021-01-05 | 上海秦璞生物科技有限公司 | Flour spectrum detector |
Non-Patent Citations (2)
| Title |
|---|
| 张良喜: "白云岩岩溶砂化形成机理及其工程特性研究—以美姑河坪头水电站为例", 《中国优秀博硕士学位论文全文数据库（博士）基础科学辑》 * |
| 陈章强: "红外衰减全反射光谱法在材料分析中的应用", 《分析仪器》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114034658B (en) | 2022-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3782827A (en) | Optical device for characterizing the surface or other properties of a sample | |
| EP0165711B1 (en) | Method and apparatus for detecting thermal waves | |
| US4049350A (en) | Process and apparatus for detecting inclusions | |
| US4692024A (en) | Automatic refractometer | |
| Krautkrämer | Determination of the size of defects by the ultrasonic impulse echo method | |
| US20140365158A1 (en) | Laser ultrasound material testing | |
| US8953743B2 (en) | X-ray stress measurement method and apparatus | |
| US7352449B2 (en) | Method and apparatus for detecting materials | |
| CN108088810B (en) | Humidity sensor based on terahertz plasma enhancement effect and system thereof | |
| Ryzy et al. | Measurement of coherent surface acoustic wave attenuation in polycrystalline aluminum | |
| CN102192884B (en) | Method for imaging of samples by using polarization controllable terahertz waves | |
| Adler et al. | Interference effect in a multifrequency ultrasonic pulse echo and its application to flaw characterization | |
| CN114034658B (en) | Device and method for detecting sandstone degree of dolomite | |
| US6628389B1 (en) | Method and apparatus for measuring cell gap of VA liquid crystal panel | |
| CN106501279A (en) | A kind of low sub-surface damage detection method of firmly crisp optical material | |
| CN207730672U (en) | A kind of laser induced breakdown spectroscopy teaching experimental | |
| CN110554003B (en) | Device and method for measuring uniaxial crystal mineral birefringence | |
| US7224462B2 (en) | Beam shifting surface plasmon resonance system and method | |
| RU2555191C1 (en) | Device for x-ray-fluorescent analysis of materials with flux generation by flat x-ray waveguide-resonator | |
| US10145675B2 (en) | Using tunable lasers in the design, manufacture, and implementation of integrated optical elements | |
| CN104634759A (en) | High-frequency terahertz scattering testing device, high-frequency terahertz scattering testing method and high-frequency terahertz scattering analysis method | |
| EP0144115A2 (en) | An ellipsometer | |
| CN104267423B (en) | A kind of detecting system and detection method of X-ray degree of polarization | |
| US2645933A (en) | Solids characteristics tester | |
| JP2012052997A (en) | Optical measurement method and optical measurement device for measuring apparent refraction factor of rough surface of solid body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220503 |