KR20140021377A - Apparatus for accelerated weathering test of rocks - Google Patents

Apparatus for accelerated weathering test of rocks Download PDF

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Publication number
KR20140021377A
KR20140021377A KR1020120087824A KR20120087824A KR20140021377A KR 20140021377 A KR20140021377 A KR 20140021377A KR 1020120087824 A KR1020120087824 A KR 1020120087824A KR 20120087824 A KR20120087824 A KR 20120087824A KR 20140021377 A KR20140021377 A KR 20140021377A
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container
rock
hole
plunger
weathering
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KR1020120087824A
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Korean (ko)
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최정해
채병곤
이평구
임길재
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한국지질자원연구원
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Priority to KR1020120087824A priority Critical patent/KR20140021377A/en
Publication of KR20140021377A publication Critical patent/KR20140021377A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • 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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • 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
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention relates to experimental equipment for rock weathering acceleration. The experimental equipment comprises: a storage for storing pH control solution and a rock sample inside of the experimental equipment; a container having a first penetration ball at the top and a second penetration ball at the bottom; a chamber having a first and a second cork sealing the container, combined with the first and second penetration balls of a body; the body supported by the chamber; a cylinder having a plunger pressing rock samples through the first penetration ball of the container, arranged at the top of the body movably; a displacement sensor for measuring a distance that the plunger moves; a rod cell being in contact with the bottom of the second cork to measure the pressure on the rock sample by the plunger, installed at the bottom of the chamber; and a heat pad controlling the temperature of the container, covering the container.

Description

Apparatus for accelerated weathering test of rocks}

The present invention relates to a test apparatus for grasping the weathering process of rock, and in particular, by adjusting the temperature, pressure, and pH to accelerate the weathering rate of rock in nature over a long period of time, thereby improving the physical / chemical change of the rock according to the weathering. It relates to an experimental apparatus for observing.

Weathering of rocks in nature takes a very long time, so it is very difficult to observe significant weathering patterns in a short time. In addition, the weathering of the rock is progressed by various conditions such as changes in temperature, pressure and pH.

Therefore, it is necessary to artificially increase the weathering speed through experiments in order to observe the physical behavior and chemical changes of the rocks due to the weathering. The apparatus for studying the weathering process by accelerating the weathering rate is the weathering acceleration experiment apparatus.

 So far, researchers have used soxhlet extractors to accelerate rock weathering. However, the experimental device can accelerate the chemical weathering of the temperature of the rock, but it is difficult to accelerate to other pressures and pH factors. In other words, due to the limitations of the device, it is virtually impossible to accelerate the weathering due to the physical factors of the rock (pressure, etc.).

In order to observe and study the weathering process of the rock and the physical and chemical change behavior of the patented rock, it is required to develop an experimental device capable of accelerating all pressure, temperature and pH factors similar to the actual weathering phenomenon in nature.

The present invention has been made to solve the above problems, and an object thereof is to provide an apparatus for accelerating rock weathering, which can accelerate the weathering of rocks by adjusting temperature, pressure, and pH, which are the weathering factors of rocks in nature.

The rock weathering acceleration test apparatus according to the present invention for achieving the above object, the receiving portion for accommodating the rock sample and the pH adjusting liquid is formed therein, the first through hole is formed on the upper surface and the second through hole is formed on the lower surface A chamber having a container portion, a first stopper and a second stopper inserted into and coupled to the first through hole and the second through hole of the main body, respectively, to seal the inside of the container part; a main body to which the chamber is mounted and supported; It is installed on the upper side of the reciprocating movement, the cylinder having a plunger for pressing the rock sample through the first through hole of the container portion, a displacement sensor for measuring the distance traveled by the plunger and the lower side of the chamber is installed The load cell and the container portion which are installed in contact with the lower surface of the second stopper to measure the pressure applied to the rock sample by the plunger. Said combined comprise a heating pad to control the temperature in the container portion.

And an injection hole for supplying a pH adjusting liquid and an discharge hole for discharging, respectively, in the upper portion of the container portion, and connected to the injection hole to provide a first water tank for supplying the pH adjusting liquid into the container portion, and the discharge hole; And a second tank connected to receive the pH adjusting liquid discharged from the discharge hole, and a balance for measuring the amount of the pH adjusting liquid discharged to the second tank.

In addition, a cutout portion is formed on a portion of the sidewall portion of the container portion, and is formed of a transparent material and further includes an observation window wrapped around the cutout portion and coupled to the sidewall of the container portion so that the inside of the container portion can be observed through the cutout portion.

In one embodiment of the present invention, an O-ring is interposed between the first plug and the first through hole and between the second plug and the second through hole to seal the inside of the container part.

In one embodiment of the present invention, a recess is formed in the lower portion of the second stopper, the protrusion of the upper portion of the load cell is inserted.

The apparatus further includes a regulator for maintaining a constant pressure at which the plunger pressurizes the sample.

On the other hand, the displacement sensor further comprises a sensor body is fixedly installed, and a mover coupled to the plunger and moved together with the plunger, one end is disposed on the sensing path of the displacement sensor, from the sensor body The displacement of the plunger is measured by sensing the distance to the mover. Specifically, the displacement sensor is an eddy current sensor.

In the present invention, the pH adjusting liquid is maintained in the pH 2 ~ 12 range, the inner wall of the container is preferably coated with a corrosion resistant material to prevent corrosion due to contact with the pH adjusting liquid.

According to the present invention, by adjusting the pressure, temperature and pH affecting the weathering of the rock to accelerate the weathering of the rock, it is possible to reproduce the weathering process of the rock for a long time in a short time.

The rock weathering acceleration test apparatus according to the present invention is expected to make a great contribution in predicting the long-term deformation of the rock according to the weathering, it is expected to make a significant contribution to the preservation and deformation prediction of the cultural property using the rock.

1 is a schematic diagram of a rock weathering acceleration test apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view of the rock weathering acceleration experiment apparatus shown in FIG. 1.
FIG. 3 is a schematic exploded perspective view of a main portion of the rock weathering acceleration experiment apparatus shown in FIG. 1.
4 and 5 is a schematic longitudinal cross-sectional view of the main portion of the rock weathering acceleration experimental apparatus shown in FIG.

Hereinafter, with reference to the accompanying drawings, it will be described in more detail the rock weathering acceleration test apparatus according to an embodiment of the present invention.

1 is a schematic configuration diagram of a rock weathering acceleration test apparatus according to an embodiment of the present invention, Figure 2 is a schematic perspective view of the rock weathering acceleration test apparatus shown in Figure 1, Figure 3 is a rock weathering shown in Figure 1 4 and 5 are schematic longitudinal cross-sectional views of the main part of the rock weathering acceleration experiment shown in FIG. 3 coupled to each other.

1 to 5, the rock weathering acceleration test apparatus 100 according to an embodiment of the present invention includes a main body 10, a chamber 30, a cylinder 50, a load cell 60, and a displacement sensor 70. ) And a heating pad (not shown).

The main body 10 is for supporting the chamber 30, the cylinder 50, the load cell 60, and the displacement sensor 70 which will be described later. In the present embodiment, the main body 10 includes a lower plate portion 11, an upper plate portion 12, and a frame 13. The lower plate portion 11 and the upper plate portion 12 is formed in a flat plate shape of a square are spaced apart from each other in the lower and upper portions are arranged in parallel. The frame 13 is vertically arranged to interconnect the lower plate portion 11 and the upper plate portion 12. In this embodiment, the frame 13 is disposed at four corners of the lower plate portion 11 and the upper plate portion 12, respectively.

And the support plate 14 is coupled to the lower plate portion 11 of the main body 10. The support plate 14 is a place where the mounting table 30 to be described below is coupled and supported, and is formed in a flat plate shape. The through plate 15 is formed in the support plate 14, and a screw (not shown) is fastened to the main body 10 through the through hole 15 so that the support plate 14 is attached to the lower plate portion 11 of the main body 10. It is fixed.

Mounting table 20 is formed in a cylindrical shape, the lower portion is provided with a square mounting plate 21 for coupling with the support plate (14). Two sets of coupling holes are formed in the support plate 14 so that the mounting plates 21 formed in two different sizes can be coupled. That is, the first coupling hole indicated by reference numeral 16 in FIG. 3 and the second coupling hole indicated by reference numeral 17. The first coupling hole 16 is for coupling with the mounting plate 21 of a small size, the second coupling hole 17 is for coupling with the mounting plate of a large size. Similarly, the mounting plate 21 is formed with a hole 22 for screwing with the coupling hole 16.

The load cell 60 is for measuring the size at which the rock sample s is pressed by the cylinder 50 to be described later, and is installed to be inserted into the mounting table 20. However, an upper portion of the load cell 60 is disposed above the mounting table 20, and in particular, an upper surface of the load cell 60 is formed with a convex fixing protrusion 61.

The mounting plate 25 is disposed above the mounting table 20. The seat plate 25 is for supporting the chamber 30 and is supported on the mounting table 20. The seating plate 25 is formed with a seating portion 26 formed inwardly concave. And the through hole 27 is formed in the center of the seating portion 26.

The chamber 30 is for accommodating the rock sample s and the pH adjusting liquid, which are the targets of the rock weathering acceleration test apparatus, and the container part 31, the first stopper 36, and the second stopper 37 Equipped. An accommodating part 32 is provided inside the container part 31 to accommodate the rock sample s and the pH adjusting liquid. An injection hole 33 and a discharge hole 34 for injecting and discharging the pH adjusting liquid into the accommodation part 32 are formed above the container part 32, respectively.

The injection hole 33 is connected to the first water tank 91 in which the pH adjusting liquid is accommodated through the tube 92, and the discharge hole 34 is also connected to the second water tank 94 through the tube 93. . The first tank 91 accommodates the pH adjusting liquid in a state where the pH is adjusted to be used for the experiment, and the second tank 94 accommodates the pH adjusting liquid after being used for the experiment. The first tank 91 and the second tank 94 are installed independently without being connected to each other. And the second tank 94 is provided with a scale 95 for measuring the amount of pH adjusting liquid used in the experiment.

The first through hole 31a and the second through hole 31b are formed in the upper side and the lower side of the container part 31 of the chamber 30, respectively. The first plug 36 and the second plug 38 are fitted in the first through hole 31a and the second through hole 31b, respectively. Two O-rings 37 are fitted to the outer circumferential surface of the first plug 36, and two O-rings 39 are fitted to the second plug 38. The O-rings 37 and 39 are interposed between the first stopper 36 and the first through hole 31a and between the second stopper 38 and the second through hole 31b so that the pH adjusting liquid is discharged through this gap. Prevent discharge. In addition, when the first stopper 36 and the second stopper 38 are pressurized, the O-rings 37 and 39 have the first stopper 36 and the second stopper 38 and the first through hole 31a. It is allowed to move a predetermined interval in the vertical direction while being fitted in the second through hole (31b). In addition, a recess is formed in the lower surface of the second plug 38 so that the fixing protrusion 61 of the load cell 60 may be inserted. When the fixing protrusion 61 is inserted into the groove portion of the second stopper 38, the second stopper 38 may be stably supported when the rock sample s and the second stopper 38 are pressed by the cylinder.

An incision is formed on the sidewall of the chamber 30, and an observation window 35 made of a transparent material is attached to the incision. Observation window 35 is made of an acrylic material can observe the situation in which the experiment proceeds inside the container (31). And since the pH control solution of pH 2 to 12 is used in the present experimental apparatus, the container portion 31 of the chamber 30 is made of a stainless steel with high corrosion resistance.

The rock sample (s) is formed long in the vertical direction, the upper and lower surfaces are disposed so as to contact the first stopper 36 and the second stopper 38, respectively.

On the other hand, the cylinder 50 is for pressurizing the rock sample (s) accommodated in the chamber 30, and includes a cylinder body 51 and a plunger 52. In this embodiment, the cylinder body 51 is coupled to the upper plate portion 12, the plunger 52 is disposed to protrude to the lower side of the upper plate portion 12 through a hole (not shown) formed in the center of the upper plate portion 12.

The plunger 52 is fitted to the cylinder body 51 to reciprocate. The cylinder 50 used in the present embodiment uses pneumatic pressure, and two cylinders 53 and 54 are provided in the cylinder body 51. An air supply line 57 connected to the air pump 55 is connected to the air ports 53 and 54 to supply air into the cylinder body 51. The upper end of the plunger 52 is disposed between the two airports 53 and 54 and moves upward or downward in accordance with the supply of air. The air supply line 57 is provided with a valve 58 for adjusting the flow rate.

The plunger 52 is formed in a rod shape and has a diameter slightly smaller than the diameter of the first plug 36. In this case, when the plunger 52 moves downward, the rock sample s may be pressurized through the first stopper 36. Since the first stopper 36 is movable at a predetermined interval in the first through hole 31a, the pressure of the plunger 52 may be transmitted to the rock sample s.

That is, when the plunger 52 moves downward as air is supplied to the cylinder body 51 through the upper air port 53, the front end surface of the plunger 52 is in contact with the first stopper 36. The rock sample s in the furnace accommodating part 31 is pressurized. Then, when air is supplied through the lower air port 54, the plunger 52 moves upward to release the pressure on the rock sample s.

In addition, a regulator 56 is installed in the air supply line 57 between the air pump 55 and the cylinder 50 to maintain a constant pressure applied by the plunger 52. Since the pressing force is changed when the rock sample s is compressed after the pressurization is started by the plunger 52, the pressure of the plunger 52 is kept constant through the regulator 56.

In the rock weathering acceleration experiment, the distance to which the rock sample s is compressed should be mainly measured. In the present invention, the plunger 52 moves downward based on the point where the plunger 52 contacts the rock sample s. Measure through the displacement moved to. Thus, the displacement sensor 70 is provided to measure the moving distance of the plunger 52.

In the present embodiment, the displacement analyzer 70 uses an eddy current displacement sensor, and the sensor body 71 is installed to be fixed on one side of the main body 10 by the fixing bar 75, and the mover is mounted on the plunger 52. 72 is installed. The mover 72 is long horizontally arranged in a bar shape and is coupled to the plunger 52 so that one end thereof is disposed on the sensing path of the sensor body 71. That is, in this embodiment, the mover 72 is disposed below the sensor body 71 and moves up and down together when the plunger 52 moves, and the sensor body 71 measures the displacement of the mover 72. As a result, the displacement of the plunger 52 can be sensed.

Meanwhile, in order to accelerate the rock weathering experiment, the pH control solution should be supplied to the rock sample (s). In the present invention, as described above, the first tank 91 and the second tank 94, the pump 96, and the tube ( 92,93). The pump 96 is installed in the tube 92 to pump the pH adjusting liquid of the first water tank 91 toward the chamber 30. And by controlling the pump 96 it is possible to adjust the amount, pressure and speed of the pH adjusting liquid supplied to the rock sample (s).

On the other hand, the pH adjusting liquid supplied to the rock sample (s) is completely filled in the chamber 30 and is discharged through the outlet 33 formed on the upper side of the container portion 31 is accommodated in the second tank (94). After measuring the weight of the pH adjusting liquid contained in the second water tank 94 with the balance 95, the component analysis of the pH adjusting liquid is performed. This is because the pH adjusting liquid contains silica components leached from the rock sample (s), so it is necessary to grasp the chemical weathering of the rock sample (s) through sample analysis.

 As described above, in the present invention, by controlling the pump 96, it is possible to adjust the amount, speed and pressure of the pH adjusting liquid supplied to the rock sample (s), the amount of pH adjusting liquid discharged through the rock sample It is measurable via the balance 95. In addition, it is possible not only to adjust the pressure for pressing the rock sample (s) through the cylinder 30, but also to maintain a constant, the displacement sensor 70 to measure the distance that the rock sample (s) is compressed by the plunger 52. Can be.

The various data thus measured and controlled are stored and displayed on the controller g via the cable c. The user can adjust the pump 96, the cylinder 30, the displacement sensor 70 through the controller (c).

On the other hand, although not shown, a heating pad (not shown) is provided outside the container portion 31 in which the rock sample s is accommodated. The heating pad is made of a bendable material and is coupled to surround the cylindrical container part 31, and a heating wire is installed therein to adjust the temperature of the container part 31. The heating pad is also connected to the controller (c) can transmit and receive information about the temperature of the container 31.

That is, in the present invention, the weathering acceleration experiment may be performed on the rock sample s while variously changing the conditions related to the pressure (cylinder), pH, and temperature applied to the rock sample s.

As described above, the experimental apparatus can perform experiments considering various conditions for the weathering of the rock, and is expected to contribute greatly to predicting the long-term deformation of the rock due to the weathering. In addition, this experimental device is expected to contribute greatly to the preservation and transformation of cultural properties using rocks.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

100 ... Rock Weathering Acceleration Tester 10 ... Main Body
30 ... chamber 50 ... cylinder
60 ... load cell 70 ... displacement sensor
61 ... supply tank 63 ... pump
70 ... displacement sensor 91 ... first water tank
92 ... second tank c ... controller

Claims (11)

A receiving portion is formed therein for accommodating the rock sample and the pH adjusting liquid, and the upper portion has a first through hole, and a lower portion has a second through hole formed therein, and the first through hole and the second through hole of the main body, respectively. A chamber having a first stopper and a second stopper fitted and coupled to seal the inside of the container part;
A main body on which the chamber is mounted and supported;
A cylinder provided on the upper side of the main body so as to reciprocate and having a plunger for pressing the rock sample through the first through hole of the container part;
A displacement sensor for measuring a distance traveled by the plunger;
A load cell installed at a lower side of the chamber to be in contact with a lower surface of the second stopper to measure the pressure applied to the rock sample by the plunger; And
Rock weathering acceleration experiment apparatus characterized in that it comprises a; wrapped around the container portion is coupled to a heating pad for controlling the temperature in the container portion. The method of claim 1,
The rock weathering acceleration experiment apparatus, characterized in that the injection hole for supplying the pH adjustment liquid and the discharge hole for discharging are formed in the upper portion of the container. 3. The method of claim 2,
A first water tank connected to the injection hole to supply the pH adjusting liquid to the inside of the container;
A second tank connected with the discharge hole to receive the pH adjusting liquid discharged from the discharge hole;
The apparatus for accelerating rock weathering, further comprising a scale for measuring the amount of the pH adjusting liquid discharged to the second tank. The method of claim 1,
A portion of the side wall portion of the container portion is formed with a cutout,
Rock weathering acceleration experiment apparatus characterized in that it further comprises an observation window is formed of a transparent material and wrapped around the incision to be coupled to the side wall of the container to observe the inside of the container through the incision. The method of claim 1,
An apparatus for accelerating rock weathering, wherein an O-ring is interposed between the first plug and the first through hole and between the second plug and the second through hole to seal the inside of the container. The method of claim 1,
The lower portion of the second stopper is recessed to form a groove,
Rock weathering acceleration experiment apparatus, characterized in that the protrusion of the upper portion of the load cell is inserted. The method of claim 1,
The apparatus for accelerating rock weathering, further comprising a regulator for maintaining a constant pressure at which the plunger pressurizes the sample. The method of claim 1,
The displacement sensor is a sensor body that is installed fixed position;
It is further provided with a mover coupled to the plunger and moved together with the plunger, one end of which is disposed on the sensing path of the displacement sensor,
The rock weathering acceleration experiment apparatus, characterized in that for measuring the displacement of the plunger by sensing the distance from the sensor body to the mover. 9. The method of claim 8,
The displacement sensor is rock weathering acceleration experiment apparatus, characterized in that the eddy current displacement sensor. The method of claim 1,
The pH adjusting liquid maintains a pH range of 2 to 12,
Rock weathering acceleration experiment apparatus, characterized in that the inner wall of the container portion is coated with a corrosion resistant material to prevent corrosion due to contact with the pH control liquid. The method of claim 1,
A flat plate-shaped support plate is coupled to the main body,
The load cell is coupled to the support plate,
The rock weathering acceleration experiment apparatus, characterized in that a plurality of coupling holes are formed in the support plate so that the load cells of different sizes can be replaced.
KR1020120087824A 2012-08-10 2012-08-10 Apparatus for accelerated weathering test of rocks KR20140021377A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104764528A (en) * 2015-04-03 2015-07-08 中国矿业大学 Thermal infrared information denoising method in coal petrography fracture development process
CN106769393A (en) * 2016-12-09 2017-05-31 东北大学 A kind of Rock Mechanics Test method of firm power loading
CN110057718A (en) * 2019-01-30 2019-07-26 天津大学 The native presetting period rapid detection method of portable grinding coagulation and detector
KR102646954B1 (en) * 2023-10-16 2024-03-13 주식회사 연진에스텍 Ultra-fine sensitivity physical property analysis equipment that measures the compressive strength of soft samples and fragile materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104764528A (en) * 2015-04-03 2015-07-08 中国矿业大学 Thermal infrared information denoising method in coal petrography fracture development process
CN104764528B (en) * 2015-04-03 2018-01-12 中国矿业大学 A kind of thermal infrared information denoising method during coal petrography cranny development
CN106769393A (en) * 2016-12-09 2017-05-31 东北大学 A kind of Rock Mechanics Test method of firm power loading
CN106769393B (en) * 2016-12-09 2019-06-25 东北大学 A kind of Rock Mechanics Test method of firm power load
CN110057718A (en) * 2019-01-30 2019-07-26 天津大学 The native presetting period rapid detection method of portable grinding coagulation and detector
KR102646954B1 (en) * 2023-10-16 2024-03-13 주식회사 연진에스텍 Ultra-fine sensitivity physical property analysis equipment that measures the compressive strength of soft samples and fragile materials

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