A rock block density detection device based on slime crystal mud

Abstract

A rock block density detection device based on slime crystal mud comprises a straight barrel without a cover; a T-shaped sealing cover and an observation tube are arranged on the straight barrel without a cover in sequence; the observation tube is vertically connected to the T-shaped sealing cover and communicated with the straight barrel without a cover through the T-shaped sealing cover; the longitudinal axes of the straight barrel without a cover, the T-shaped sealing cover and the observation tube are coaxial; the straight barrel without a cover and the observation tube are filled with slime crystal mud; the slime crystal mud is made by mixing leguminous plant extract, borax and white glue, has no obvious bubbles and does not stick to the inner wall. The present invention uses a detection device and utilizes the characteristics of slime crystal mud, such as high fluidity, large deformability and good particle encapsulation, to directly measure the volume of rocks that disintegrate, dissolve and shrink when exposed to water, and then calculate the density of the rock block, which is simple to operate and scientifically designed.

Description

Technical Field

[0001] The invention relates to a rock block density detection device based on slime crystal mud. Background Art

[0002] In geology, the block density of rock is an important physical parameter that reflects the compactness and density of rock. It has important guiding significance for the engineering application of rock: (1) When building tunnels, bridges or water conservancy projects, understanding the block density of rock helps determine the suitability and design parameters of the rock. (2) It can be used to evaluate the bearing capacity, stability and possible deformation of the rock. (3) Block density is also closely related to other properties of rock, such as porosity and water absorption. Therefore, accurate detection of rock block density is of great significance.

[0003] Among the existing methods, there are three main methods for testing the density of rock blocks: (1) Volumetric method. Applicable to rocks that can be prepared into regular specimens. By measuring the size of the rock specimen, its volume is calculated, and then its mass is measured to determine the block density. (2) Weighing in water method. Applicable to all types of rocks except those that do not disintegrate, dissolve, or shrink or swell when exposed to water. Weigh the rock specimen in water to obtain its buoyancy in water, calculate the volume of the rock based on the Archimedean principle, and determine the block density. (3) Sealing method. Applicable to rocks that disintegrate, dissolve, shrink, or swell when exposed to water. By sealing the rock specimen and then using the weighing method in water, the block density is determined.

[0004] It can be seen that the sealing method can only be used to detect the density of rock blocks that disintegrate, dissolve, shrink or swell when exposed to water. At present, there are two main sealing methods: (1) Paraffin wax sealing method. Tie a cotton thread to the weighed specimen, and use one end of the cotton thread to slowly immerse the specimen in wax liquid that has been heated in a wax pot to a temperature slightly higher than the melting point. After the specimen is fully immersed for about 2 seconds, remove the wax pot to solidify the wax liquid on the surface of the specimen, that is, evenly coat a wax film about 1 mm thick. Then, the water weighing method is used to calculate the block density. The shortcomings of this method are: it requires precise control of the temperature, immersion time and thickness of the paraffin wax, and the paraffin wax density must be tested, which is cumbersome to operate; for rocks with many edges and corners, particles are easily lost, and pores and coating leaks are likely to occur, resulting in water ingress during weighing in water, resulting in detection failure. (2) Polymer resin coating sealing method. First, prepare a glue solution with a mass ratio of polyvinyl chloride resin and cyclohexanone of 2:8. Use a brush to evenly apply the glue on the surface of the specimen (usually twice). After the solvent evaporates, a thin film is formed on the surface of the specimen. Then the block density is calculated by weighing in water. The disadvantages of this method are: it requires brushing and testing the density of the glue, which is cumbersome. For rocks with many edges and corners, particles are easily lost, it is difficult to apply evenly, and the glue is easy to be thin or missed, resulting in water ingress during weighing in water, and detection failure.

[0005] In summary, the existing technologies for detecting the density of rock blocks that disintegrate, dissolve, shrink or swell when exposed to water have shortcomings, so it is necessary to invent new technologies. Summary of the invention

[0006] The present invention proposes a rock block density detection device based on slime crystal mud, which is scientifically designed, accurate in data, practical and convenient, and also provides a method for using the device. The device and the method for using the device can solve the shortcomings of the prior art.

[0007] The technical solution adopted by the present invention is: comprising a coverless straight barrel; a T-shaped sealing cover and an observation tube are arranged on the coverless straight barrel in sequence; the observation tube is vertically connected to the T-shaped sealing cover and is connected to the coverless straight barrel through the T-shaped sealing cover; the longitudinal axes of the coverless straight barrel, the T-shaped sealing cover and the observation tube are coaxial; the coverless straight barrel and the observation tube are filled with slime crystal mud; the slime crystal mud is made by mixing leguminous plant extract, borax and white glue, has no obvious bubbles, and does not stick to the inner wall.

[0008] Furthermore, the coverless straight barrel, T-shaped sealing cover and observation tube are all made of transparent materials.

[0009] Furthermore, the T-shaped sealing cover includes an upper annular body and a lower annular body; the outer diameter of the upper annular body is larger than the outer diameter of the uncovered straight barrel, and a carrying handle is provided on the edge, and the bottom surface of the upper annular body can be pressed to be flush with the top surface of the uncovered straight barrel; the outer diameter of the lower annular body is matched with the inner diameter of the uncovered straight barrel, and the outer wall of the lower annular body and the inner wall of the uncovered straight barrel are sealed by applying vaseline.

[0010] Furthermore, the observation tube is provided with volume graduations, and its inner diameter is the same as the inner diameters of the upper annular body and the lower annular body. The volume graduations and the inner diameter size settings meet the detection accuracy requirements.

[0011] The beneficial effects of the present invention are as follows: (1) the volume of rocks that disintegrate, dissolve, shrink or swell when exposed to water can be directly measured by using slime crystal mud, and then the density of the rock block can be calculated, which is simple to operate and scientific in design; (2) the characteristics of slime crystal mud, such as high fluidity, large deformability and good particle encapsulation (not easy to lose particles), are utilized to make the rock specimen detection conditions very low, and rocks in various conditions can be detected, with a wide range of applications; (3) no expensive testing equipment is required, and the required instruments, equipment and accessories are easy to purchase and process, which is of great promotion value; (4) the shortcomings of the prior art are solved, and the present invention is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the present invention.

[0013] Figure 2 It is a schematic diagram of the AA plane of the present invention.

[0014] Figure 3 It is a BB plane schematic diagram of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all possible alternatives, improvements and equivalents within the scope of the claims.

[0016] Reference Figure 1-3 A rock block density detection device based on slime crystal mud comprises a straight barrel without a cover 4; a T-shaped sealing cover 7 and an observation tube 1 are arranged on the straight barrel without a cover 4 in sequence; the observation tube 1 is vertically connected to the T-shaped sealing cover 7 and is connected to the straight barrel without a cover 4 through the T-shaped sealing cover 7; the longitudinal axes of the straight barrel without a cover 4, the T-shaped sealing cover 7 and the observation tube 1 are coaxial; the straight barrel without a cover 4 and the observation tube 1 are filled with slime crystal mud 2; the slime crystal mud 2 is made of a mixture of leguminous plant extract, borax and white glue, has no obvious bubbles, and does not stick to the inner wall.

[0017] The coverless straight barrel 4, T-shaped sealing cover 7 and observation tube 1 described in this embodiment are all made of organic glass.

[0018] The coverless straight barrel 4 of the present embodiment has a thickness of 6 mm, an inner diameter of 120 mm, an outer diameter of 126 mm, and an inner height of 150 mm.

[0019] The T-shaped sealing cover 7 described in this embodiment includes an upper annular body and a lower annular body; the upper annular body has an inner diameter of 24 mm, an outer diameter of 150 mm, and a height of 6 mm, and a carrying handle 8 is provided on the edge. The bottom surface of the upper annular body can be pressed to be flush with the top surface of the uncovered straight barrel 4; the lower annular body has an inner diameter of 24 mm, an outer diameter of 119.5 mm, and a height of 30 mm. The outer wall of the lower annular body and the inner wall of the uncovered straight barrel are sealed by applying vaseline 6.

[0020] The observation tube 1 described in this embodiment has an inner diameter of 20 mm, an outer diameter of 24 mm, a height of 1000 mm, and is provided with a volume scale line 5, with the minimum scale being 0.5 mL.

[0021] The use process of this embodiment is as follows: (1) weigh the mass M of the rock specimen 3 according to the standard, M=193.88g; (2) pour the slime crystal mud 2 into the uncovered straight barrel 4, after applying vaseline 6 to the T-shaped sealing cover 7, grab the carrying handle 8, press it down until the top surface of the uncovered straight barrel 4 is tightly closed, the slime crystal mud 2 is squeezed into the observation tube 1, and the volume reading V1 of the slime crystal mud 2 is recorded, V1=5.5mL; (3) grab the carrying handle 8, lift the T-shaped sealing cover 7, immerse the rock specimen into the slime crystal mud 2, wait until it is completely immersed, apply vaseline 6 to the T-shaped sealing cover 7, grab the carrying handle 8, press it down until the top surface of the uncovered straight barrel 4 is tightly closed, the slime crystal mud 2 is squeezed into the observation tube 1, and the total volume reading V2 of the slime crystal mud and the rock specimen is recorded, V2=79.5mL; (4) calculate the density P of the rock block according to the following formula: P=M / (V2-V1) = 193.88 / (79.5-5.5) = 2.62 g / cm 3 .

Claims

1. A rock block density detection device based on slime crystal mud, characterized in that: It comprises a coverless straight barrel; a T-shaped sealing cover and an observation tube are arranged on the coverless straight barrel in sequence; the observation tube is vertically connected to the T-shaped sealing cover and communicated with the coverless straight barrel through the T-shaped sealing cover; the longitudinal axes of the coverless straight barrel, the T-shaped sealing cover and the observation tube are coaxial; the coverless straight barrel and the observation tube are filled with slime crystal mud; the slime crystal mud is made by mixing leguminous plant extract, borax and white glue, has no obvious bubbles, and does not stick to the inner wall.

2. The rock block density detection device based on slime crystal mud according to claim 1, characterized in that: The coverless straight barrel, T-shaped sealing cover and observation tube are all made of transparent materials.

3. The rock block density detection device based on slime crystal mud according to claim 1, characterized in that: The T-shaped sealing cover comprises an upper annular body and a lower annular body; the outer diameter of the upper annular body is larger than the outer diameter of the uncovered straight barrel, and a carrying handle is provided on the edge; the bottom surface of the upper annular body can be pressed to be flush with the top surface of the uncovered straight barrel; the outer diameter of the lower annular body matches the inner diameter of the uncovered straight barrel, and the outer wall of the lower annular body and the inner wall of the uncovered straight barrel are sealed by applying vaseline.

4. The rock block density detection device based on slime crystal mud according to claim 1, characterized in that: The observation tube is provided with volume graduations, and its inner diameter is the same as the inner diameters of the upper annular body and the lower annular body. The size settings of the volume graduations and the inner diameter meet the requirements of detection accuracy.

5. A detection method for a rock block density detection device based on slime crystal mud, comprising the following detection steps: (1) weighing the mass M of a rock specimen according to the standard; (2) pouring the slime crystal mud into a straight barrel without a cover, applying vaseline to the T-shaped sealing cover, grasping the carrying handle, pressing it down until the top of the straight barrel without a cover is tightly closed, and the slime crystal mud is squeezed into an observation tube, and the volume reading V1 of the slime crystal mud is recorded; (3) grasping the carrying handle, lifting the T-shaped sealing cover, immersing the rock specimen into the slime crystal mud, and after it is completely immersed, applying vaseline to the T-shaped sealing cover, grasping the carrying handle, pressing it down until the top of the straight barrel without a cover is tightly closed, and the slime crystal mud is squeezed into the observation tube, and the total volume reading V2 of the slime crystal mud and the rock specimen is recorded; (4) calculating the rock block density P according to the following formula: P=M / (V2-V1).

Images