JP4392261B2 - Core sample processing system and core sample processing method - Google Patents

Description

  The present invention relates to a system for preparing an indoor test specimen in an oxygen-free atmosphere from an oxygen-free core sample collected for a geological survey, a hydrological property survey, an environmental pollution survey, a geochemical test survey, or an underground microbial survey. It is.

  As a core sample for environmental safety prior assessment in the location and design of nuclear facilities, it is necessary to prepare samples without oxygen contamination and to prepare specimens. Also, in general environmental surveys, chromium, arsenic, manganese, etc., which are the cause of groundwater contamination, are collected in the presence of oxygen because the form (solubility), migration rate, etc. of compounds (ions) differ due to oxidation. Since it is not possible to conduct a highly accurate environmental survey on the core sample, it is necessary to collect a sample free from oxygen contamination and prepare a specimen. Furthermore, in underground microbiological surveys, regardless of whether anaerobic or aerobic, it is possible to conduct high-accuracy sampling / environmental surveys unless the disturbance of oxygen or organic matter in the underground environment associated with sampling is avoided. Can not.

  For this reason, an effort to reproduce the reducing atmosphere by adding a reducing agent or hydrogenation to the sample is not only useless, but also harmful to testing and investigation. For this reason, it is necessary to collect samples free from oxygen contamination and to prepare specimens in a predetermined shape taking care not to touch the air.

  Therefore, in the prior art, in order to collect a core sample by boring in a slightly oxygen environment, it has been considered to use a temperature-expelling degassing system or water in which an inert gas is blown as drilling water. That is, this system heats and supplies water into the sealed chamber, and forcibly degass the gas from the gas layer located at the top of the sealed chamber, thereby allowing the gas dissolved in a certain amount of liquid at a certain temperature. Using Henry's principle that the amount is proportional to the pressure (partial pressure) of the gas, oxygen dissolved in water is expelled into the gas phase to create oxygen-free water, and this oxygen-free water is placed in a rod with a bit. To the surroundings of the core sample to make a slight oxygen environment.

  In such a method, unless the water temperature is raised to a certain extent, the oxygen dissolved in the water cannot be removed sufficiently, and even at 100 ° C., the oxygen is 1 / compared with the normal temperature because of its solubility in water. It has only been reduced to 3 quantities. In addition, in order to realize this, a large amount of energy is required to heat a large amount of water to a higher water temperature, resulting in an increase in cost.

  Further, when hot water is sent from the sealed chamber to the downstream side by the water pump, bubbles tend to be generated on the upstream side of the water pump, which causes a problem of cavitation. Therefore, in order to prevent this, the water pump has to be installed at a relatively low position with respect to the sealed chamber, so that there is a problem that additional cost and time are required for installation of the entire boring system. .

  Furthermore, in the conventional technology, the collected core sample is cut into a sample length corresponding to the required volume in oxygen-free water due to the restriction of the shape of the specimen in the laboratory test, and further pulverized and stored in a non-breathable bag. However, a method has been adopted in which this is stored in a vacuum container (water and air during storage operation are quickly degassed) and an inert gas is injected. In this way, because the important part of sample preparation is mainly underwater operation, it is difficult to precisely process, store and transport the specimen as an arbitrary shape suitable for testing while maintaining the underground environment. Met.

  In addition, existing glove containers for handling radioactive substances and microorganisms are usually subject to strict negative pressure control. For regulatory reasons, it is necessary to break this negative pressure control and bring in a new cutting machine, Usage that may break negative pressure management due to continuous introduction and discharge, implementation of operations using blades and rotary cutting machines that may damage the glove, which is one element of negative pressure management, core cutting in glove containers Considering the adverse effects of cutting dust on the other operations, there were various difficulties. Therefore, in existing or new glove containers for handling radioactive materials and microorganisms, it is necessary to process core samples for the purpose of geological survey into specimens for reasons such as cost, safety review, and licensing period. The implementation of processes including cutting and cutting tools, rotary cutting machines, and processing / preparation by rotary polishing was not an object of consideration.

Furthermore, the conventional probe container is large, and due to restrictions such as negative pressure management, making it portable is not a dream.
In addition, core samples collected from unsemi-consolidated sedimentary soil, semi-consolidated sedimentary soil, soft rocks, and specimens that have been precision-processed from the core sample are removed on the ground for short-term or The mechanical properties may change over a long period of time, and during ground storage and transportation, this has been further accelerated due to drying and vibration.

  Therefore, the present invention provides a portable oxygen-free core sample processing system that can prevent the interruption of an oxygen-free state, which is a drawback of the existing glove container, in the above-described prior art. And providing a processing method thereof.

  In order to solve the above problems, according to the invention of the core sample processing system 1 according to claim 1, a storage container (three-dimensional pressurization unit) 31 for storing the core sample A under pressure in an oxygen-free state, and the storage container 31 can be detachably connected, and a portable processing container 3 for storing the core sample A, an inert gas supply unit 5 for supplying an inert gas into the processing container 3, and the processing container 3, a processing device for processing the core sample A, and an oxygen-free liquid serving as a refrigerant for the processing device.

  According to the invention of the core sample processing system according to claim 2, the processing device cuts the core sample A fixed to the fixing devices 19a and 19b and the fixing devices 19a and 19b for fixing the core sample A. The cutting device 21 to be used, and an oxygen-free liquid serving as a refrigerant for the processing device are provided. According to the invention of the core sample processing system according to claim 3, the processing apparatus includes a moving table (self-propelled moving table) 15 for moving the core sample A to the cutting device 21. To do.

  According to the invention of the core sample processing system according to claim 4, the processing device 20 is a polishing device (polishing diamond) for polishing a specimen (disk-shaped sample) B cut from the core sample by the cutting device 25. Table) 25 is provided. According to the core sample processing system of the present invention, the pressurizing device (inert gas inlet) 5 for slightly pressurizing (about +10 mmHg) the inside of the processing container 3 with an inert gas to a pressure higher than its surroundings. It is characterized by providing.

  According to the core sample processing system of the sixth aspect of the present invention, when the pressure difference between the inside and outside of the processing container 3 reaches a predetermined value, the check is performed to release the inert gas in the processing container 3 to the outside. A valve is provided. According to the invention of the core sample processing system according to claim 7, the storage container 31 and the processing container 3 are hermetically connected, and the core sample A can move between the containers in an oxygen-free state. Features.

  According to the invention of the core sample processing system according to claim 8, the moving device (dropping opening, slide) that moves the specimen B processed from the core sample A in the processing container 3 to the storage container 31. A shutter 18) is provided.

  According to the invention of the core sample processing system according to claim 9, the moving device 18 includes a drop opening for dropping the specimen B processed from the core sample A by the processing device 20 into the storage container 31. And a slide shutter 18 held on the moving table until the core sample falls.

  According to the invention of the core sample processing system of the tenth aspect, the cutting and polishing apparatus 20 having the functions of the cutting apparatus 21 and the polishing apparatus 25 is provided. According to the invention of the core sample processing system according to claim 11, an oxygen-free cooling mechanism that cools the core sample A with an oxygen-free refrigerant in order to prevent overheating during processing of the core sample A or the specimen B. 24.

  The core sample processing system according to claim 12 is characterized in that the oxygen-free refrigerant includes at least one of oxygen-free water, liquefied argon, and liquefied fluorocarbon compound. According to the invention of the core sample processing system according to claim 13, the inert gas is nitrogen or argon. According to the invention of the core sample processing system of the fourteenth aspect, there is provided an airtight glove 9 for operating inside the processing container 3.

  According to the invention of the core sample processing method according to claim 15, the first storage step of storing the core sample A in a pressurized oxygen-free state, and the core sample A being transferred to the processing step while maintaining the oxygen-free state. A transfer step for removing the core sample A transferred in the transfer step, cutting and / or polishing in an oxygen-free state, and an inert gas supply step for supplying an inert gas to the process step. And a second storage step of storing the specimen B processed from the core sample A in the processing step in a pressurized oxygen-free state.

  According to the core sample processing system and the core sample processing method of the present invention, an interruption of an oxygen-free state in the core sample collection and processing method in the existing oxygen-free state and the core sample loading and unloading which is a drawback of the existing glove container Or, it is possible to prevent the release of the underground pressure during storage. In addition, while maintaining the state where the oxygen-free core sample is shielded from atmospheric oxygen, the oxygen-free sample is cut and polished in an oxygen-free environment with the underground stress maintained immediately before and immediately after processing. Can be stored and transported while the underground stress is restored in the storage container, that is, while maintaining the reducing environment in the basement. Therefore, it is possible to prepare high-quality specimens for bedrock / soil mechanics tests, hydrological tests, geochemical tests, and underground biological tests.

  DESCRIPTION OF EMBODIMENTS Embodiments relating to a portable anaerobic core sample processing system (Portable Airless Core Processing System) and a portable anaerobic core sample storage device according to the present invention will be described below with reference to the drawings. In the present invention, oxygen-free means a state in which oxygen is removed to such an extent that the influence of oxidation of the core sample and the specimen can be ignored.

  FIG. 1 is a schematic view of a core collection boring system which is a premise of the portable anoxic sample processing system of the present invention. The core collection boring system is roughly composed of an excavator 103, an oxygen-free working unit 105, and an oxygen-free water generator 107. The patent application for the oxygen-free working chamber has been filed as Japanese Patent Application No. 2003-124780 filed by the applicant of the present application, and the oxygen-free water generation apparatus has been filed as Japanese Patent Application No. 2003-124781 filed by the present applicant.

  An outline of the core boring system will be described with reference to FIG. The excavator 103 rotates the rod 114 and collects a core sample with an excavation bit provided at the lower end of the rod 114. The excavator 103 is supplied with oxygen-free water supplied from the oxygen-free water generator 107, and the core sample can be collected in an oxygen-free state. Further, a water storage tank 133 is provided near the ground surface of the excavator 103, and the water storage tank 133 is filled with oxygen-free water supplied by the oxygen-free water generator 107. An oxygen-free working unit 105 is formed in the water storage tank 133, and the oxygen-free working unit 105 moves the core sample collected at the tip of the rod 114 and processes it in an oxygen-free state. .

  The oxygen-free water generator 107 generates oxygen-free oxygen-free water by mixing an inert gas such as nitrogen with the supply water and diffusing oxygen, and then removing gas components. Hereinafter, the configuration of the oxygen-free water generator 107 will be described. Supply water 151 such as ground water is mixed with nitrogen gas supplied from a nitrogen cylinder 157 by a first static mixer 145. The mixed supply water and nitrogen gas are separated by the first cyclone gas-liquid separator 143 to obtain oxygen-free water. Further, the oxygen-free water is sent to the second static mixer 145a and mixed with nitrogen gas supplied from the nitrogen cylinder 157a. The oxygen-free water and nitrogen gas mixed by the second static mixer 145a are separated by the second cyclone gas-liquid separator 143a, and oxygen-free water having a further reduced oxygen concentration is obtained. This oxygen-free water is supplied to the excavator 103 and the oxygen-free working unit 105.

A portable oxygen-free sample processing system 1 of the present invention will be described with reference to FIG. The portable oxygen-free sample processing system 1 includes a processing container 3 and a three-dimensional pressurizing unit 31 and is installed in an oxygen-free working unit 105. In order to make the portable anoxic sample processing system portable, the processing container 3 can be a box of about 0.5 m ³ or less that can be carried by an operator, and preferably a box of about 0.1 m ³ . It is what. Further, an inert gas inlet 5 is provided at the lower part of the left side surface of the processing container 3. Nitrogen or argon can be used as the inert gas. Although not shown, an oxygen concentration meter is installed at the inert gas inlet 5 so that the oxygen concentration can be detected.

  Further, the inert gas outlet 7 is provided at the upper part of the right side surface of the processing container 3 away from the inert gas inlet 5. In addition, a check valve (not shown) is disposed at the inert gas outlet 7, and the check valve prevents inflow of oxygen or the like from the outside of the processing container 3, and from the inside of the processing container 3. Allow exhaust to the outside. In addition, the inside of the processing container 3 is made to flow an inert gas, and is in a slightly pressurized state of about 10 mmHg with respect to a pressure slightly higher than the atmospheric pressure, for example, an atmospheric pressure around the processing container 3.

  Further, an airtight rubber glove 9 is provided on the upper surface of the processing container 3 in order to operate the internal equipment from the outside. The rubber gloves 9 are attached to the processing container 3 via left and right attachment ports 11 provided on the upper surface of the processing container 3. A plurality of attachment ports 11 are also provided on the side surface of the processing container 3, and a rubber glove 9 can be attached to each. In a state where the rubber gloves 9 are not attached, the attachment port 11 is sealed with a lid. The attachment port 11 has an opening that allows a hand to enter. The operator puts a hand into the rubber glove 9 through the opening of the attachment port 11 and performs an operation inside the processing container 3.

  In addition, left and right viewing windows 13 made of a transparent material such as acrylic resin or glass are provided on the side surface of the processing container 3, and an operator can work while looking inside the processing container 3 from the viewing window 13. it can. Note that the entire processing container 3 can be made of a transparent material.

  On the bottom surface of the processing container 3, a self-propelled moving table 15 used for processing and moving the excavated columnar core sample A is installed. The self-propelled moving table 15 is connected to a moving table driving device 17 that moves the moving table 15. The self-propelled moving table 15 can be moved left and right in FIG. 2 on the bottom surface of the processing container 3 by the moving table driving device 17.

  Furthermore, between the lower surface of the self-propelled moving table 15 and the bottom surface of the processing container 3, a processed disk-shaped sample B (specimen) to be described later is moved from the processing container 3 to the three-dimensional pressure unit 31. A slide shutter 18 is provided. The slide shutter 18 is moved in unison with the self-propelled moving table 15 in a closed state.

  The self-propelled movable table 15 has a sample dropping opening 15a, and the opening / closing surface of the slide shutter 18 is exposed from the opening 15a. A drop opening is formed in the bottom surface of the processing container 3 located immediately below the opening / closing surface of the shutter 18, and a three-dimensional pressurizing unit 31 is connected to the drop opening.

  The slide shutter 18 is provided with a shutter knob 18a for opening and closing. When the operator operates the shutter knob 18a, the slide shutter 18 is opened, and the disk-shaped sample B falls on the bottom surface of the processing container 3. It falls into the three-dimensional pressure cell 33 of the three-dimensional pressure unit 31 connected to the opening for use.

  As shown in FIG. 1, the core sample A is excavated by the bit at the lower end of the excavator 103 while being filled with oxygen-free water, and is stored in the three-dimensional pressurizing unit 31. The three-dimensional pressure unit 31 is lifted by the wire of the suspension mechanism and transferred to the oxygen-free working unit 105. Within the anaerobic working unit 105, the three-dimensional pressurizing unit 31 is connected to the processing container 3. The core sample A is taken out into the processing container 3 from the three-dimensional pressure unit 31 connected to the processing container 3. Thus, the core sample A is excavated in an oxygen-free state and immediately stored in the processing vessel 3.

  In the processing container 3, the core sample A is placed on the slide shutter 18 exposed from the opening 15 a of the self-propelled moving table 15. In this state, the upper end portion of the core sample A is fixed by the upper fixing tool 19a, and the lower end portion thereof is fixed by the lower fixing tool 19b. A slit 19 c is formed in the lower fixture 19 b in parallel with the moving table 15.

  In the processing container 3, a rotary cutting polishing machine 20 for precision processing having a function interchangeable between the rotary cutting machine and the rotary polishing machine is installed. The rotary cutting and polishing machine 20 performs cutting (FIG. 2) and polishing (FIG. 3) of the core sample A in an oxygen-free environment.

  The rotary cutting and polishing machine 20 is rotated by a diamond blade 21 for rotary cutting, a rotary shaft 22 erected from the bottom surface of the processing container 3 for rotating the diamond blade 21, a motor or the like for rotating the rotary shaft 22. The shaft drive device 23 is configured. On the side surface of the core sample A, a rotary cutting polishing machine 20 is located. The core sample A moves toward the diamond blade 21 on the self-propelled moving table 15, and the diamond blade 21 that rotates horizontally is slit. The core sample A is sliced into a disk shape along 19c.

  In addition, the oxygen-free cooling mechanism 24 blows an oxygen-free refrigerant onto the portion where the diamond blade 21 comes into contact with the core sample A and cuts it. The oxygen-free cooling mechanism 24 supplies at least one of oxygen-free water, liquefied argon, and a volatile liquefied fluorocarbon compound (for example, low-temperature liquid chlorofluorocarbon) as an oxygen-free liquid refrigerant.

  In addition, the self-propelled moving base 15, the slide shutter 18, the upper fixing tool 19a, and the lower fixing tool 19b can be moved to the left and right in FIG. In a state of being fixed to the self-propelled movable table 15 and the slide shutter 18 by 19a and the lower fixture 19b, these integrally move horizontally toward the diamond blade 21, and the core sample A is sliced by the diamond blade 21. Thus, a disk-shaped sample B is obtained. In addition, an opening for taking in and out various devices in the processing container 3 is formed in the lower part of the left side surface of the processing container 3, and this opening can be opened and closed by an entrance / exit lid 29.

  With reference to FIG. 3, each part used for polishing the disk-shaped sample B will be described. In the polishing process of the disk-shaped sample B, the operator removes the diamond blade 21 from the rotating shaft 22 of the rotary cutting polishing machine 20 and replaces it with a polishing diamond table 25.

  Thus, the polishing diamond table 25 is disposed on the side surface of the self-propelled movable table 15. Note that industrial diamond particles for polishing the disk-shaped sample B are attached to the upper surface of the polishing diamond table 25. The polishing diamond table 25 is rotated horizontally by the driving device 23 via the rotating shaft 22.

  The disk-shaped sample gripper 27 grips the upper side surface of the cut disk-shaped sample B and brings the lower surface of the disk-shaped sample B into contact with the polishing surface of the diamond table 25 for polishing. The cut surface can be polished. The disc-shaped sample gripper 27 is moved to a position that does not interfere with the cutting when the core sample A in FIG. 1 is cut.

  In addition, in order to prevent overheating when the disk-shaped sample B is polished, an oxygen-free cooling mechanism 24 is provided between the polished surface of the polishing diamond table 25 and the lower surface of the disk-shaped sample B so that oxygen-free water or the like is not present. Oxygen refrigerant is sprayed. Since the position of the air outlet of the oxygen-free cooling mechanism 24 can be changed, it can be applied to both cutting and polishing.

  A three-dimensional pressurizing unit 31 is detachably connected to the drop opening on the bottom surface of the processing container 3. The internal space of the three-dimensional pressurizing unit 31 and the internal space of the processing container 3 are connected via the opening for dropping of the processing container 3.

  Next, the configuration of the three-dimensional pressure unit 31 of the present invention will be described with reference to FIGS. The three-dimensional pressure unit 31 includes a three-dimensional pressure cell 33 (FIG. 4), an outer container 35 (FIG. 5), and a passive flexible shutter 37 (FIG. 6). The three-dimensional pressurization cell 33 is accommodated in the outer container 35. As shown in FIG. 4, the cylindrical sample 33a of the three-dimensional pressurization cell 33 is stacked with the disk-shaped sample B in the vertical direction. Saved. 4 shows a state in which the disk-shaped sample B is accommodated in the three-dimensional pressure cell 33, but the core sample A immediately after being excavated is also accommodated in the three-dimensional pressure cell 33. In addition, an upper surface lid 33b is provided on the upper surface of the cylindrical portion 33a of the three-dimensional pressure cell 33, and a lower surface lid 33c is provided on the lower surface of the cylindrical portion 33a.

  The disk-shaped sample B is a specimen processed from the core sample A excavated from a high-pressure formation, and when the underground pressure disappears after excavation, it deforms and changes its mechanical characteristics. Therefore, in order to suppress the change in the mechanical characteristics, immediately after the cutting and polishing of the core sample A, the disk-shaped sample B is accommodated in the three-dimensional pressure cell 33 and pressurized. Further, on the lower surface lid 33c side, an oxygen-free water supply pipe 34 for supplying oxygen-free water pressurized with an inert gas into the three-dimensional pressurization cell 33, and an oxygen-free water from the oxygen-free water supply pipe 34 are provided. A supply pipe valve 34a for controlling the supply of the oxygen is provided, and an oxygen-free water discharge pipe 36 for discharging the inert gas from the three-dimensional pressurization cell 33 and an oxygen-free water discharge pipe 36 are provided on the upper surface lid 33b side. And a discharge pipe valve 36a for controlling the discharge of the oxygen-free water. Therefore, the core sample A or the disk-shaped sample B accommodated in the three-dimensional pressurized cell 33 is filled with pressurized oxygen-free water.

  As shown in FIG. 5, the outer container 35 is a bottomed cylindrical container that accommodates the above-described three-dimensional pressure cell 33, and is preferably made of metal in order to ensure pressure resistance. A circular passive flexible shutter 37 is detachably attached to the upper end opening of the three-dimensional pressure cell 33.

  The upper surface of the passive flexible shutter 37 is composed of a plurality of rubber tongues 37 a as shown in FIG. 6, and the base end of the tongue 37 a is the periphery of the passive flexible shutter 37. It is fixed to the portion 37b and is disposed so that a part thereof overlaps. When the disk-shaped sample B falls from above the passive flexible shutter 37, the passive flexible shutter 37 is deformed downward by the weight of the disk-shaped sample B, and the disk-shaped sample B falls. The three-dimensional pressurization storage cell 31 accommodates the three-dimensional pressurization cell 33. Note that when the disk-shaped sample B is received, the upper surface lid 33b is removed in advance by an operator from within the processing container 3. Further, after the disk-shaped sample B is dropped, the tongue is returned to its original shape by the elastic force, so that the passive flexible shutter 37 is returned to the closed state.

  A male screw is formed in the connection portion 38 to the bottom surface of the processing container 3 at the upper end of the outer container 35, and is screwed in an airtight manner with a female screw formed on the inner surface of the opening for dropping formed on the bottom surface of the processing container 3. . Thus, the attachment of the three-dimensional pressurization unit 31 to the processing container 3 is a screw-in type, and the inert gas disturbance in the attachment operation of the three-dimensional pressurization unit 31 can be avoided. Further, since the three-dimensional pressure cell 33 is placed in an oxygen-free water atmosphere in the three-dimensional pressure unit 31, the core sample A and the disk-shaped sample B can be stored in a state where the underground stress is restored without oxygen. Transport is possible.

  Next, steps from the excavation of the core sample A to the processing and storage of the disk-shaped sample B will be described. The columnar core sample A excavated by the tip bit of the excavator 103 in FIG. 1 is immediately stored and stored in the three-dimensional pressurizing unit 31 (first storage step). The three-dimensional pressure unit 31 and the outer container 35 containing the core sample A are filled with oxygen-free water (an oxygen-free liquid supplying step), and the core sample is stored in the three-dimensional pressure cell 33 accommodated in the outer container 35. A is pressurized to 15 to 20 atmospheres under an oxygen-free atmosphere, so that the underground stress applied to the core sample A is restored while maintaining the oxygen-free atmosphere at a high level (pressure process). The three-dimensional pressure unit 31 containing the core sample A is lifted by a suspension mechanism and transferred to the oxygen-free working part 105 of the water storage tank 133 (transfer process). A three-dimensional pressurizing unit 31 containing the core sample A is attached to the processing container 3 disposed in the oxygen-free working unit 105, and the core sample A is taken out from the three-dimensional pressurizing unit 31 into the processing container 3.

  In the oxygen-free processing container 3, the core sample A is cut by the diamond blade 21 of the rotary cutting and polishing machine 20 and processed into a disk-shaped sample B (specimen) (processing step). Further, in a non-oxygen environment, the cut surface of the disk-shaped sample B is polished by the polishing diamond table 25 of the rotary cutting polishing machine 20 (processing step). In addition, when processing the core sample A into the disk-shaped sample B, an inert gas is supplied and an oxygen-free atmosphere is maintained in the processing container 3 (inert gas supply step). After that, the polished disc-shaped sample B falls into the three-dimensional pressurization unit 31 from the drop opening at the bottom of the processing container 3 without touching oxygen in the atmosphere, and again enters the three-dimensional pressurization unit 31. Stored (second storage step).

  Furthermore, in the three-dimensional pressurization unit 31, the disk-like sample B is pressurized with oxygen-free water under an inert gas atmosphere, and the underground stress is restored, and its surroundings are covered with oxygen-free water (first). 2 preservation process), preservation and transportation are possible in a state where the reducing environment in the basement is maintained. As a result, a high-quality specimen suitable for mechanical, hydrological and geochemical tests can be prepared.

It is the schematic which shows the whole structure of the core collection boring system used as the premise of this invention. It is the schematic which shows the structure in the cutting state of the core sample by the portable anoxic sample processing system of this invention. It is the schematic which shows the structure in the grinding | polishing state of the core sample by the portable oxygen-free sample processing system of this invention. It is a side view of the three-dimensional pressurization cell which comprises the three-dimensional pressurization unit of this invention. It is a side view of the external container which comprises the three-dimensional pressurization unit of this invention. It is a top view of the passive automatic shutter which comprises the three-dimensional pressurization unit of this invention.

Explanation of symbols

A Core sample B Disk-shaped sample 1 Portable oxygen-free sample processing system 3 Processing box 5 Inert gas inlet 7 Inert gas outlet 9 Rubber glove 11 Mounting port 13 Viewing window 15 Self-propelled moving platform 15a Sample dropping opening 17 Moving table driving device 18 Slide shutter 18a Shutter knob 19a Upper fixing tool 19b Lower fixing tool 19c Slit 20 Rotating cutting polishing machine 21 Diamond blade 22 Rotating shaft 23 Rotating shaft driving device 24 Anoxic cooling mechanism 25 Polishing diamond table 31 Three-dimensional Pressurization unit 33 Three-dimensional pressurization cell 33b Top cover 33c Bottom cover 34 Anoxic water supply pipe 34a Supply pipe valve 35 Outer container 36 Anoxic water discharge pipe 34a Drain pipe valve 37 Passive automatic shutter 103 Excavator 105 Anoxic work Part 107 oxygen-free water generator 114 rod 133 water storage tank 143 first Cyclone gas-liquid separator 143a second cyclonic gas-liquid separator 145 first static mixer 145a second static mixer 151 feedwater 157 nitrogen cylinder 157a nitrogen cylinder

Claims (12)

A storage container capable of storing the core sample under pressure in an oxygen-free state, a portable processing container in which the storage container can be detachably connected and accommodated for processing the core sample, and inert in the processing container An inert gas supply unit that supplies a gas, a processing device that processes the core sample in the processing container, and an oxygen-free liquid that serves as a refrigerant of the processing device ,
The processing device includes: a fixing device that fixes the core sample; a cutting device that cuts the core sample fixed to the fixing device; an oxygen-free liquid that serves as a refrigerant for the processing device; and the cutting of the core sample. core sample processing system characterized in Rukoto a polishing apparatus for polishing a specimen cut from the core samples and the moving base, by the cutting device to move the device. 2. The core sample processing system according to claim 1, further comprising a pressurization device that slightly pressurizes the inside of the processing container with an inert gas to a pressure higher than its surroundings. 3. The core sample processing according to claim 2 , further comprising a check valve that operates when a pressure difference between the inside and outside of the processing container reaches a predetermined value and releases the inert gas in the processing container to the outside. system. The core sample according to any one of claims 1 to 3 , wherein the storage container and the processing container are connected in an airtight manner, and the core sample is movable between both containers in an oxygen-free state. Processing system. The core sample processing system according to any one of claims 1 to 4 , further comprising a moving device that moves a specimen processed from the core sample to the storage container from the processing device. The moving device includes a drop opening for dropping a specimen processed from the core sample by the processing device into the storage container, and a slide shutter held on the moving table until the core sample falls. The core sample processing system according to claim 5 . The core sample processing system according to any one of claims 1 to 6, further comprising a cutting and polishing device that functions as both the cutting device and the polishing device. To prevent overheating during processing of the core sample or the specimen, to any one of claims 1 to 7, characterized in that the oxygen-free refrigerant comprises oxygen-free cooling mechanism for cooling the core sample The core sample processing system described. The core sample processing system according to claim 8 , wherein the oxygen-free refrigerant includes at least one of oxygen-free water, liquefied argon, and a liquefied fluorocarbon compound. The inert gas, core sample processing system according to any one of claims 1 to 9, characterized in that nitrogen or argon. Core sample processing system according to any one of claims 1 to 10, characterized in that it comprises a tightness gloves for to operate within the processing vessel. A first storage step of storing the core sample in an oxygen-free state; a transfer step of transferring the core sample to a processing step while maintaining the oxygen-free state; and removing the core sample transferred in the transfer step. a machining step of machining in the machining apparatus in oxygen conditions, stores the a processing step in an inert gas supplying step of supplying an inert gas, the processed specimen from the core sample in the processing step in an oxygen-free state A second storage step ,
The processing device includes: a fixing device that fixes the core sample; a cutting device that cuts the core sample fixed to the fixing device; an oxygen-free liquid that serves as a refrigerant for the processing device; and the cutting of the core sample. moving base and the core sample processing method comprising Rukoto a polishing apparatus for polishing a specimen cut from the core samples by the cutting device to move the device.

Images