Calcium pore determination method and system based on polarizing microscope and scanning electron microscope
By combining polarized microscopy and scanning electron microscopy, the problem of difficult observation and type division of travertine microscopy is solved, rapid positioning and efficient analysis are achieved, and experimental efficiency is improved.
Patent Information
- Application Number
- CN202311089660.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-28
- Publication Date
- 2025-02-28
AI Technical Summary
When using scanning electron microscopic pores in the prior art, there are problems such as random visual selection and difficult pore type division, resulting in long observation time and low experimental efficiency.
The travertine pore determination method based on polarization microscope and scanning electron microscope is used to initially locate the microscope's distribution position through polarization microscope, observe the pore characteristics in combination with scanning electron microscope, and analyze components using energy spectrometer to divide the pore types.
It effectively reduces the time-consuming process of discovering travertine micropores, improves the efficiency of pore type division, improves the efficiency of experimental results, and saves observation time.
Smart Images
Figure CN119534513A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of travertine microscopic pore identification, and more specifically, to a travertine pore determination method and system based on a polarizing microscope and a scanning electron microscope. Background Art
[0002] At the current stage, the study of travertine has gradually expanded from the small field of carbonate rock research to the study of oil and gas resource reservoirs. In the field of oil and gas exploration, it is generally believed that travertine is formed by chemical sedimentation and does not have the ability to form oil and gas reservoirs. However, biological action is also widely involved in the formation of travertine, which may enable travertine to have a certain hydrocarbon generation ability; at the same time, the porosity of travertine can be as high as 30%. Even travertine with a lower porosity often has greater permeability due to its more microscopic pores. It is an excellent reservoir that can form small and rich oil and gas reserves. Therefore, the microscopic pores of travertine play a significant role in the high permeability of travertine, which is of guiding significance for judging the physical properties of ancient travertine reservoirs and guiding the exploration and development of ancient travertine oil and gas.
[0003] At present, the closest existing technology is to make travertine samples into about 1 to 2 cm 3 Samples of different sizes, fresh and flat surfaces are plated with gold film and observed under a scanning electron microscope. However, when observed under a scanning electron microscope at low magnification, it is not easy to find microscopic pores, and usually it is necessary to magnify them thousands to tens of thousands of times. At the same time, since the selection of the field of view is random, the discovery of microscopic pores is also random. If no microscopic pores are found, or the microscopic pores are poorly developed, it is necessary to reselect the observation area, which increases the time required for the experiment.
[0004] Scanning electron microscopes have been widely used in the observation of various clay minerals, oil and gas reservoir pores and other aspects of research and have achieved good results. However, when using scanning electron microscopes to observe travertine micropores and identify pore types, there are still problems such as random field selection and difficulty in dividing fracture types. This is mainly reflected in the use of scanning electron microscopes to observe travertine micropores. Because it is necessary to magnify thousands to tens of thousands of times, the observation field is small, and it is difficult to find micropores. When the micropore development is atypical, the field of view still needs to be reselected. At the same time, it is difficult to divide the micropore types, resulting in long observation time, low experimental and scientific research efficiency, and other problems.
[0005] Therefore, it is necessary to develop a method and system for determining travertine pores based on polarizing microscopy and scanning electron microscopy.
[0006] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention
[0007] The present invention proposes a travertine pore determination method and system based on a polarizing microscope and a scanning electron microscope, which effectively reduces the time consumption of discovering travertine microscopic pores, improves the efficiency of pore type classification, improves experimental efficiency, and saves observation time.
[0008] In a first aspect, the present disclosure provides a method for determining travertine pores based on a polarizing microscope and a scanning electron microscope, comprising:
[0009] Collecting and preparing travertine samples, and classifying the petrographic types of the travertine samples;
[0010] Determining the microscopic pore distribution position of the travertine sample by polarizing microscope;
[0011] The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy;
[0012] The components of the travertine sample are determined by an energy spectrometer and the pore types are classified.
[0013] Preferably, determining the microscopic pore distribution position of the travertine sample by polarizing microscopy comprises:
[0014] The travertine sample is placed under the polarizing microscope for observation. Under a magnification of 20-50 times, the material composition of the travertine sample and the distribution position of the microscopic pores are preliminarily determined. The diatom fossils are observed under a magnification of 50 times and marked on the travertine sample.
[0015] Preferably, the microscopic pore characteristics of the travertine sample are observed by scanning electron microscopy, including:
[0016] Pasting electrical tape on the microscopic pore distribution position, and plating a gold film on the travertine sample;
[0017] According to the marks on the travertine sample, the distribution position of the microscopic pores was determined at 300 times magnification, and the microscopic pores were observed at 5000-8000 times to analyze the pore development characteristics.
[0018] Preferably, the components of the travertine sample are determined by an energy spectrometer, and the pore types are classified, including:
[0019] Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics;
[0020] For uncertain components, the energy spectrum analysis is performed by the energy spectrometer to determine the material components and classify the pore types.
[0021] Preferably, the pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
[0022] In a second aspect, the embodiments of the present disclosure further provide a travertine pore determination system based on a polarizing microscope and a scanning electron microscope, comprising:
[0023] a memory storing computer executable instructions;
[0024] A processor, wherein the processor runs the computer executable instructions in the memory to perform the following steps:
[0025] Collecting and preparing travertine samples, and classifying the petrographic types of the travertine samples;
[0026] Determining the microscopic pore distribution position of the travertine sample by polarizing microscope;
[0027] The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy;
[0028] The components of the travertine sample are determined by an energy spectrometer and the pore types are classified.
[0029] Preferably, determining the microscopic pore distribution position of the travertine sample by polarizing microscopy comprises:
[0030] The travertine sample is placed under the polarizing microscope for observation. Under a magnification of 20-50 times, the material composition of the travertine sample and the distribution position of the microscopic pores are preliminarily determined. The diatom fossils are observed under a magnification of 50 times and marked on the travertine sample.
[0031] Preferably, the microscopic pore characteristics of the travertine sample are observed by scanning electron microscopy, including:
[0032] Pasting electrical tape on the microscopic pore distribution position, and plating a gold film on the travertine sample;
[0033] According to the marks on the travertine sample, the distribution position of the microscopic pores was determined at 300 times magnification, and the microscopic pores were observed at 5000-8000 times to analyze the pore development characteristics.
[0034] Preferably, the components of the travertine sample are determined by an energy spectrometer, and the pore types are classified, including:
[0035] Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics;
[0036] For uncertain components, the energy spectrum analysis is performed by the energy spectrometer to determine the material components and classify the pore types.
[0037] Preferably, the pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
[0038] Its beneficial effects are:
[0039] (1) The present invention uses a polarizing microscope and a scanning electron microscope to identify the microscopic pores of travertine, which can effectively solve the existing problems of directly using a scanning electron microscope to observe the microscopic pores of travertine, such as difficulty in finding the microscopic pores, difficulty in classifying the types, and long observation time, which leads to low experimental and scientific research efficiency.
[0040] (2) The present invention combines the use of polarizing microscope and scanning electron microscope, and the sample preparation and experimental steps are simple, and the position of microscopic pores can be quickly located for observation. At the same time, the energy spectrometer can be used to analyze the uncertain components based on the polarizing microscope, providing a basis for the classification of travertine microscopic pore types.
[0041] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.
[0043] Figure 1 A flow chart showing the steps of a method for determining travertine pores based on a polarizing microscope and a scanning electron microscope according to an embodiment of the present invention.
[0044] Figure 2 A schematic diagram showing microcrystalline calcite and micropores between particles of travertine according to an embodiment of the present invention is shown.
[0045] Figure 3 A schematic diagram of travertine biological residual channels according to an embodiment of the present invention is shown. DETAILED DESCRIPTION
[0046] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.
[0047] The present invention provides a method for determining travertine pores based on a polarizing microscope and a scanning electron microscope, comprising:
[0048] Collect and prepare travertine samples, and classify the petrographic types of travertine samples;
[0049] The microscopic pore distribution of travertine samples was determined by polarizing microscopy;
[0050] The microscopic pore characteristics of travertine samples were observed by scanning electron microscopy;
[0051] The components of travertine samples were determined by energy spectrometer and the pore types were classified.
[0052] In one example, the microscopic pore distribution of a travertine sample was determined by polarizing microscopy, including:
[0053] Place the travertine sample under a polarizing microscope for observation. Under 20-50 times magnification, preliminarily determine the material composition of the travertine sample and the distribution of microscopic pores. Observe the diatom fossils under 50 times magnification and mark them on the travertine sample.
[0054] In one example, the microscopic pore features of a travertine sample were observed by scanning electron microscopy, including:
[0055] Paste electrical tape on the microscopic pore distribution location and plate a gold film on the travertine sample;
[0056] According to the marks on the travertine samples, the distribution position of microscopic pores was determined at 300 times magnification, and the microscopic pores were observed at 5000-8000 times to analyze the pore development characteristics.
[0057] In one example, the composition of the travertine sample was determined by an energy spectrometer to classify the pore types, including:
[0058] Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics;
[0059] For uncertain components, energy spectrum analysis is performed using an energy spectrometer to determine the material components and classify the pore types.
[0060] In one example, the pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
[0061] Specifically, travertine sample collection and sample preparation; sample collection can use conventional methods to collect travertine samples in the study area, and macroscopic observation, description and recording of travertine samples; combined with the geological background of the study area, the lithofacies types of travertine samples are divided (abiotic crystalline lithofacies, microbial lithofacies and clastic granular lithofacies). Compared with other types of rock samples, travertine usually contains more pores and pore types, up to more than 30%, including a large number of macroscopic pores, and the connectivity between pores is good. Therefore, when selecting travertine samples, try to select typical travertine samples with a small proportion of macroscopic pores to make rock thin sections.
[0062] Determine the distribution of microscopic pores through polarizing microscope; observe the rock slice under polarizing microscope: at 20-50 times magnification, make a preliminary judgment on the material composition of the sample and the distribution of microscopic pores; at 50 times magnification, small, rice-like diatom fossils can be observed, and it is difficult to observe diatom fossils below 50 times. Make marks on the rock slice according to the observation results of polarizing microscope.
[0063] Observe the characteristics of microscopic pores through a scanning electron microscope; first, stick the electrical tape according to the marked position of the slice, and perform gold film treatment on the rock slice, with an operating current of 15mA and a spraying time of 180s. Then, according to the marks on the rock slice sample, determine the distribution position of the microscopic pores at a low magnification (300 times), and then increase the observation magnification as needed to observe the microscopic pores and analyze the characteristics of pore development. Usually, the microscopic pores of travertine can be observed at a magnification of 5000-8000 times. Choosing too small a magnification may lead to observation difficulties, while choosing too large a magnification may result in fewer microscopic pores in the field of view and low observation efficiency. Figure 3 Under 8000 times magnification, only a few diatom remains can be included in the field of view. When observing the microscopic pores of travertine at more than 8000 times, due to the later replacement of diatoms and other biological remains, even using an energy spectrometer cannot effectively determine the components of diatoms and other biological remains in travertine.
[0064] Based on the observations of polarizing microscope and scanning electron microscope, for the determined components, the pore types can be directly divided according to the pore characteristics; for the uncertain components, the energy spectrum analysis is carried out by energy spectrometer to determine their material components and classify the pore types at the same time.
[0065] As shown in Table 1, the main material components of travertine are calcite and a small amount of biological remains and other mineral debris. According to the results of energy spectrometer detection, the main chemical components of calcite are O and Ca; the main chemical components of biological remains (mainly diatoms) are O and Si.
[0066] Table 1 Main material components of travertine
[0067]
[0068] Microscopic pore types and their characteristics include:
[0069] ① Biological residual channels: During the travertine deposition process, the microorganisms are deposited together and are encapsulated in the travertine particles, leaving channels in the biological remains or travertine particles, which are usually 10 -9 m; often distributed inside biological remains, where obvious biological structures can usually be seen;
[0070] ② Gas diffusion holes: When travertine is deposited, the escape of gases such as CO2 forms non-penetrating pores in the particles, which are usually 10-6 m; often distributed in mixed circles on the surface of crystals and cements;
[0071] ③ Micro cracks between particles: Unfilled gaps and pores between travertine particles and fillings, usually 10 -6 m, often distributed in the contact zone between minerals and filling edges;
[0072] ④ Dissolution pores: mainly formed by the selective dissolution of mineral particles and joints in travertine by fluid; often distributed on the surface of mineral particles, joints and between mineral crystals.
[0073] The above steps combine the use of polarizing microscope and scanning electron microscope to determine the main material components of travertine, the type of microscopic pores and their development. The steps of this method should be carried out according to the above steps to quickly identify the type and development characteristics of travertine microscopic pores. Otherwise, it may lead to repeated selection of visual fields, incorrect classification of pore types, low experimental efficiency and other problems.
[0074] The present invention also provides a travertine pore determination system based on a polarizing microscope and a scanning electron microscope, comprising:
[0075] a memory storing computer executable instructions;
[0076] A processor executes the computer executable instructions in the memory to perform the following steps:
[0077] Collect and prepare travertine samples, and classify the petrographic types of travertine samples;
[0078] The microscopic pore distribution of travertine samples was determined by polarizing microscopy;
[0079] The microscopic pore characteristics of travertine samples were observed by scanning electron microscopy;
[0080] The components of travertine samples were determined by energy spectrometer and the pore types were classified.
[0081] In one example, the microscopic pore distribution of a travertine sample was determined by polarizing microscopy, including:
[0082] Place the travertine sample under a polarizing microscope for observation. Under 20-50 times magnification, preliminarily determine the material composition of the travertine sample and the distribution of microscopic pores. Observe the diatom fossils under 50 times magnification and mark them on the travertine sample.
[0083] In one example, the microscopic pore features of a travertine sample were observed by scanning electron microscopy, including:
[0084] Paste electrical tape on the microscopic pore distribution location and plate a gold film on the travertine sample;
[0085] According to the marks on the travertine samples, the distribution position of microscopic pores was determined at 300 times magnification, and the microscopic pores were observed at 5000-8000 times to analyze the pore development characteristics.
[0086] In one example, the composition of the travertine sample was determined by an energy spectrometer to classify the pore types, including:
[0087] Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics;
[0088] For uncertain components, energy spectrum analysis is performed using an energy spectrometer to determine the material components and classify the pore types.
[0089] In one example, the pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
[0090] Specifically, travertine sample collection and sample preparation; sample collection can use conventional methods to collect travertine samples in the study area, and macroscopic observation, description and recording of travertine samples; combined with the geological background of the study area, the lithofacies types of travertine samples are divided (abiotic crystalline lithofacies, microbial lithofacies and clastic granular lithofacies). Compared with other types of rock samples, travertine usually contains more pores and pore types, up to more than 30%, including a large number of macroscopic pores, and the connectivity between pores is good. Therefore, when selecting travertine samples, try to select typical travertine samples with a small proportion of macroscopic pores to make rock thin sections.
[0091] Determine the distribution of microscopic pores through polarizing microscope; observe the rock slice under polarizing microscope: at 20-50 times magnification, make a preliminary judgment on the material composition of the sample and the distribution of microscopic pores; at 50 times magnification, small, rice-like diatom fossils can be observed, and it is difficult to observe diatom fossils below 50 times. Make marks on the rock slice according to the observation results of polarizing microscope.
[0092] Observe the characteristics of microscopic pores through a scanning electron microscope; first, stick the electrical tape according to the marked position of the slice, and perform gold film treatment on the rock slice, with an operating current of 15mA and a spraying time of 180s. Then, according to the marks on the rock slice sample, determine the distribution position of the microscopic pores at a low magnification (300 times), and then increase the observation magnification as needed to observe the microscopic pores and analyze the characteristics of pore development. Usually, the microscopic pores of travertine can be observed at a magnification of 5000-8000 times. Choosing too small a magnification may lead to observation difficulties, while choosing too large a magnification may result in fewer microscopic pores in the field of view and low observation efficiency. Figure 3Under 8000 times magnification, only a few diatom remains can be included in the field of view. When observing the microscopic pores of travertine at more than 8000 times, due to the later replacement of diatoms and other biological remains, even using an energy spectrometer cannot effectively determine the components of diatoms and other biological remains in travertine.
[0093] Based on the observations of polarizing microscope and scanning electron microscope, for the determined components, the pore types can be directly divided according to the pore characteristics; for the uncertain components, the energy spectrum analysis is carried out by energy spectrometer to determine their material components and classify the pore types at the same time.
[0094] The above steps combine the use of polarizing microscopy and scanning electron microscopy to determine the main material components of travertine, the type of microscopic pores and their development.
[0095] To facilitate understanding of the solutions and effects of the embodiments of the present invention, two specific application examples are given below. Those skilled in the art should understand that the examples are only for facilitating understanding of the present invention, and any specific details thereof are not intended to limit the present invention in any way.
[0096] Example 1
[0097] Figure 1 A flow chart showing the steps of a method for determining travertine pores based on a polarizing microscope and a scanning electron microscope according to an embodiment of the present invention.
[0098] like Figure 1 As shown, the travertine porosity determination method based on polarizing microscope and scanning electron microscope includes: step 101, collecting travertine samples and preparing samples, and classifying the petrographic types of the travertine samples; step 102, determining the microscopic pore distribution position of the travertine sample through a polarizing microscope; step 103, observing the microscopic pore characteristics of the travertine sample through a scanning electron microscope; step 104, determining the components of the travertine sample through an energy spectrometer and classifying the pore types.
[0099] Taking the determination of microscopic pores in travertine samples in southern Tibet as an example, the specific implementation steps of this method are as follows:
[0100] First, during the field investigation, typical travertine samples were collected. The hand specimens were non-biological crystalline phases, grayish white, medium-fine grained, layered, and mainly composed of calcite. The eumorphism was good, and the bottom layer was travertine, grayish white, with many small holes visible. The coarse-grained calcite layer was about 3 to 4 cm thick, and the cryptocrystalline calcite layer was about 4 to 5 cm thick. The cryptocrystalline calcite layer was selected and ground into a 0.03 mm thick rock slice.
[0101] Observe the rock slices using a polarizing microscope. First, observe the rock slices under a polarizing microscope at 20-50 times magnification. Most of the minerals in the slices are pale yellow under single polarization, high-grade white under orthogonal polarization, and prismatic joints are visible, so they are preliminarily identified as calcite. Under 50 times magnification, tiny, rice-like diatom fossils can be seen in some areas; at the same time, cracks often develop inside the mineral particles. Use a marker pen to mark the diatom fossils and areas with dense cracks.
[0102] Figure 2 A schematic diagram showing microcrystalline calcite and micropores between particles of travertine according to an embodiment of the present invention is shown.
[0103] Figure 3 A schematic diagram of travertine biological residual channels according to an embodiment of the present invention is shown, wherein the elliptical pores in the middle and upper right are biological residual channels, and the rest are microcrystalline calcite.
[0104] Stick electrical tape on the rock slices according to the markings and apply gold film treatment. Find the marked area under the scanning electron microscope at 300 times magnification, and then increase the magnification according to actual needs to observe the microscopic pores. Figure 2 As shown in Figure 1, after magnification to 6000 times, it was found that micropores were developed between particles in the field of view; Figure 3 As shown in the figure, after magnification to 8000 times, it was found that biological residual channels were developed in the field of view. If an uncertain component is encountered, the energy spectrometer can be used to determine its material composition and then determine the pore type.
[0105] Experimental equipment: Nova 450 field emission scanning electron microscope, working voltage of 25kv, working distance of 5.7-6mm; Q150R S Plus coater, working current of 15mA, spraying time of 180s.
[0106] This method combines the use of a polarizing microscope and a scanning electron microscope. Based on the preliminary analysis of the material composition and microscopic pore distribution of travertine using a polarizing microscope, the location of the microscopic pores is marked with electrical tape, the marked location is found under a scanning electron microscope at a low magnification, and the microscopic pores are observed and analyzed at a magnified observation magnification according to actual needs. If the pore type classification is difficult due to uncertain components, an energy spectrometer can be used to analyze the material composition and classify the pore types.
[0107] Example 2
[0108] The travertine pore determination system based on polarizing microscope and scanning electron microscope includes:
[0109] a memory storing computer executable instructions;
[0110] A processor executes the computer executable instructions in the memory to perform the following steps:
[0111] Collect and prepare travertine samples, and classify the petrographic types of travertine samples;
[0112] The microscopic pore distribution of travertine samples was determined by polarizing microscopy;
[0113] The microscopic pore characteristics of travertine samples were observed by scanning electron microscopy;
[0114] The components of travertine samples were determined by energy spectrometer and the pore types were classified.
[0115] In one example, the microscopic pore distribution of a travertine sample was determined by polarizing microscopy, including:
[0116] Place the travertine sample under a polarizing microscope for observation. Under 20-50 times magnification, preliminarily determine the material composition of the travertine sample and the distribution of microscopic pores. Observe the diatom fossils under 50 times magnification and mark them on the travertine sample.
[0117] In one example, the microscopic pore features of a travertine sample were observed by scanning electron microscopy, including:
[0118] Paste electrical tape on the microscopic pore distribution location and plate a gold film on the travertine sample;
[0119] According to the marks on the travertine samples, the distribution position of microscopic pores was determined at 300 times magnification, and the microscopic pores were observed at 5000-8000 times to analyze the pore development characteristics.
[0120] In one example, the composition of the travertine sample was determined by an energy spectrometer to classify the pore types, including:
[0121] Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics;
[0122] For uncertain components, energy spectrum analysis is performed using an energy spectrometer to determine the material components and classify the pore types.
[0123] In one example, the pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
[0124] Those skilled in the art should understand that the purpose of the above description of the embodiments of the present invention is only to exemplarily illustrate the beneficial effects of the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to any given examples.
[0125] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A method for determining travertine pores based on polarizing microscope and scanning electron microscope, characterized in that: include: Collecting and preparing travertine samples, and classifying the petrographic types of the travertine samples; Determining the microscopic pore distribution position of the travertine sample by polarizing microscope; The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy; The components of the travertine sample are determined by an energy spectrometer and the pore types are classified.
2. The method for determining travertine pores based on polarizing microscope and scanning electron microscope according to claim 1, wherein: The microscopic pore distribution position of the travertine sample is determined by polarizing microscopy, including: The travertine sample is placed under the polarizing microscope for observation. Under a magnification of 20-50 times, the material composition of the travertine sample and the distribution position of the microscopic pores are preliminarily determined. The diatom fossils are observed under a magnification of 50 times and marked on the travertine sample.
3. The method for determining travertine pores based on polarizing microscope and scanning electron microscope according to claim 2, wherein: The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy, including: Pasting electrical tape on the microscopic pore distribution position, and plating a gold film on the travertine sample; According to the marks on the travertine sample, the distribution position of the microscopic pores was determined at 300 times magnification, the microscopic pores were observed at 5000-8000 times magnification, and the pore development characteristics were analyzed.
4. The method for determining travertine pores based on polarizing microscope and scanning electron microscope according to claim 1, wherein: The components of the travertine sample are determined by an energy spectrometer, and the pore types are classified, including: Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics; For uncertain components, the energy spectrum analysis is performed by the energy spectrometer to determine the material components and classify the pore types.
5. The method for determining travertine pores based on polarizing microscope and scanning electron microscope according to claim 1, wherein: The pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.
6. A travertine pore determination system based on polarizing microscope and scanning electron microscope, characterized in that: The system includes: a memory storing computer executable instructions; A processor, wherein the processor runs the computer executable instructions in the memory to perform the following steps: Collecting and preparing travertine samples, and classifying the petrographic types of the travertine samples; Determining the microscopic pore distribution position of the travertine sample by polarizing microscope; The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy; The components of the travertine sample are determined by an energy spectrometer and the pore types are classified.
7. The travertine pore determination system based on polarizing microscope and scanning electron microscope according to claim 6, wherein: The microscopic pore distribution position of the travertine sample is determined by polarizing microscopy, including: The travertine sample is placed under the polarizing microscope for observation. Under a magnification of 20-50 times, the material composition of the travertine sample and the distribution position of the microscopic pores are preliminarily determined. The diatom fossils are observed under a magnification of 50 times and marked on the travertine sample.
8. The travertine pore determination system based on polarizing microscope and scanning electron microscope according to claim 7, wherein: The microscopic pore characteristics of the travertine sample were observed by scanning electron microscopy, including: Pasting electrical tape on the microscopic pore distribution position, and plating a gold film on the travertine sample; According to the marks on the travertine sample, the distribution position of the microscopic pores was determined at 300 times magnification, the microscopic pores were observed at 5000-8000 times magnification, and the pore development characteristics were analyzed.
9. The travertine pore determination system based on polarizing microscope and scanning electron microscope according to claim 6, wherein: The components of the travertine sample are determined by an energy spectrometer, and the pore types are classified, including: Based on polarizing microscope and scanning electron microscope observations, for the determined components, the pore types are directly classified according to the pore characteristics; For uncertain components, the energy spectrum analysis is performed by the energy spectrometer to determine the material components and classify the pore types.
10. The travertine pore determination system based on polarizing microscope and scanning electron microscope according to claim 6, wherein: The pore types include: biological residual pores, gas diffusion holes, micro cracks between particles, and dissolution pores.