A long-term maintenance monitoring device and method for large-scale buffer material blocks

Abstract

The present invention discloses a long-term maintenance monitoring device for large-scale building blocks made of buffer materials, comprising a sealed box, a monitoring area and a transition area are arranged in the sealed box, and two sets of control gloves are arranged on the side walls of the sealed box; a weighing device is arranged in the monitoring area; the monitoring area is connected to the air inlet of a first circulation pump through a first return air pipe, the air outlet of the first circulation pump is connected to a solution pool through a first outlet pipe, the transition area is connected to the air inlet of a second circulation pump through a second return air pipe, the air outlet of the second circulation pump is connected to the solution pool through a second outlet pipe, the monitoring area is connected to the solution pool through the first inlet pipe, and the transition area is connected to the solution pool through the second inlet pipe. A long-term maintenance monitoring method for large-scale building blocks made of buffer materials, using the above-mentioned device to monitor the long-term changes of large-scale building blocks made of buffer materials in a humid environment in real time. The present invention can monitor the long-term changes of large-scale building blocks made of buffer materials in a humid environment.

Description

Technical Field

[0001] The invention relates to the technical field of buffer materials for geological disposal of high-level radioactive waste, and in particular to a long-term maintenance monitoring device and method for large-scale building blocks of buffer materials. Background Art

[0002] In the field of geological disposal of high-level radioactive waste, buffer materials are usually wrapped around waste tanks in the form of high-density blocks, which is an effective guarantee for the safety and stability of geological disposal repositories. Buffer material blocks are generally made by static compaction, where bentonite powder raw materials with a specific moisture content are pressed into a masonry structure with a certain shape and density.

[0003] Large blocks of buffer materials prepared in ground laboratories or processing workshops need to go through a considerable period of time before they can be used in underground laboratories or high-level radioactive waste disposal repositories. If appropriate long-term maintenance measures are not taken during this period, it will be difficult for the blocks to maintain their original state, resulting in the risk of deterioration of the blocks, which will seriously affect their engineering performance.

[0004] During long-term storage and transportation, blocks may experience changes in environmental temperature and humidity. They are very sensitive to moisture changes. Drying and water loss will cause shrinkage cracking, moisture absorption will cause expansion cracking, and block deformation will affect the subsequent installation and engineering performance during service. Therefore, it is important to understand the changes in large blocks of buffer materials under temperature and humidity environments. Summary of the invention

[0005] The purpose of the present invention is to provide a long-term maintenance monitoring device and method for large-scale building blocks of buffer materials to solve the problems existing in the above-mentioned prior art, monitor the long-term changes of large-scale building blocks of buffer materials in a humid environment, and provide a technical reference for the long-term maintenance and storage of large-scale building blocks of buffer materials.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a long-term maintenance monitoring device for large-scale building blocks of buffer materials, comprising a transparent sealed box, wherein a monitoring area and a transition area separated by a partition are arranged in the sealed box, wherein the partition is sealed and detachably connected to the sealed box, and two sets of control gloves respectively located in the monitoring area and the transition area are arranged on the side wall of the sealed box; a weighing device is arranged in the monitoring area, a bracket is placed on the weighing plate of the weighing device, and a plurality of deformation sensors surrounding the large-scale building blocks of buffer materials to be monitored are arranged on the bracket, wherein the contacts of the deformation sensors are in contact with the outer surface of the large-scale building blocks of buffer materials, and there is a gap between the large-scale building blocks of buffer materials and the bracket; the monitoring area is connected to the first air return pipe The transition zone is connected to the air inlet of the first circulation pump, the air outlet of the first circulation pump is connected to the closed solution pool through the first air outlet pipe, the transition zone is connected to the air inlet of the second circulation pump through the second return air pipe, the air outlet of the second circulation pump is connected to the solution pool through the second air outlet pipe, one end of the first air outlet pipe and the second air outlet pipe are both extended into the saturated salt solution in the solution pool, one end of the first air inlet pipe is connected to the monitoring zone, the other end is extended into the solution pool and is located above the liquid level of the saturated salt solution in the solution pool, one end of the second air inlet pipe is connected to the transition zone, the other end is extended into the solution pool and is located above the liquid level of the saturated salt solution in the solution pool; a scanning device is arranged in the transition zone.

[0008] Preferably, a plurality of equalizing containers filled with saturated salt solution are placed in the monitoring area, and the top ends of the equalizing containers are open.

[0009] Preferably, a first temperature and humidity sensor is provided in the monitoring area, and a second temperature and humidity sensor is provided in the transition area; the first temperature and humidity sensor, the second temperature and humidity sensor, the weighing device and the deformation sensor are respectively connected to a data acquisition system.

[0010] Preferably, the weighing device is an electronic weighing instrument.

[0011] Preferably, the first air inlet pipe, the second air inlet pipe, the first air return pipe, the second air return pipe, the first air outlet pipe and the second air outlet pipe are all made of plastic.

[0012] The present invention also provides a long-term maintenance monitoring method for large-scale building blocks of buffer materials, comprising the following steps:

[0013] (1) determining the humidity of the saturated salt solution according to the moisture content of the large-scale buffer material blocks to be monitored, and placing the saturated salt solution in a solution tank and an equalizing container;

[0014] (2) placing a weighing device in the monitoring area of ​​the sealed box, placing the large building block of the buffer material in the center of the bracket, and making the multiple deformation sensors on the bracket contact with the outer surface of the large building block of the buffer material;

[0015] (3) evenly placing a plurality of the equalizing containers in the monitoring area;

[0016] (4) Connecting the weighing device, the deformation sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor to the data acquisition system respectively, setting the data acquisition system to acquire data once every 10 minutes, and starting data acquisition of the weighing device, the deformation sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor;

[0017] (5) placing the large-sized building block of the cushioning material on the weighing plate of the weighing device, and then performing a three-dimensional scanning of the large-sized building block of the cushioning material using a scanning device by manipulating the gloves;

[0018] (6) sealingly connecting the partition plate to the sealing box by manipulating the gloves to isolate the monitoring area from the transition area, starting the first circulation pump, and monitoring the deformation and quality parameters of the large-scale building blocks of the buffer material under the temperature and humidity environment in real time;

[0019] (7) After real-time monitoring for a fixed period of time, the second circulation pump is started, and when the data of the second temperature and humidity sensor in the transition zone is the same as the data of the first humidity sensor in the monitoring zone, the partition is removed by the control glove, and the large-scale cushioning material block is three-dimensionally scanned by the scanning device;

[0020] (8) After the scanning is completed, the partition is installed through the control glove, the second circulation pump is turned off, and the changes of the large building blocks of the buffer material are continued to be monitored;

[0021] (9) Repeat steps (7) and (8) until the deformation and quality of the large-scale buffer material blocks are stable and the test is completed.

[0022] Preferably, the fixed time period in step (7) is one week.

[0023] Preferably, a plurality of large building blocks of buffer materials to be monitored are prepared, and different large building blocks of buffer materials have different moisture contents. Saturated salt solutions with different humidity are set for different large building blocks of buffer materials. Long-term maintenance monitoring is performed on the plurality of large building blocks of buffer materials to be monitored, and monitoring data of the large building blocks of buffer materials with different moisture contents under different temperature and humidity conditions are obtained.

[0024] Compared with the prior art, the present invention has achieved the following technical effects:

[0025] The long-term maintenance monitoring device and method of the buffer material large-scale building blocks of the present invention can monitor the long-term changes of the buffer material large-scale building blocks in a humid environment, and provide a technical reference for the long-term maintenance and storage of the buffer material large-scale building blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic structural diagram of a long-term maintenance monitoring device for large-scale building blocks of buffer materials according to the present invention;

[0028] Figure 2 It is a partial structural schematic diagram of the long-term maintenance monitoring device for large-scale building blocks of buffer materials of the present invention;

[0029] Among them: 100, long-term maintenance monitoring device for large-scale building blocks of buffer materials; 1, first return air pipe; 2, first temperature and humidity sensor; 3, bracket; 4, deformation sensor; 5, balancing container; 6, weighing device; 7, partition; 8, building blocks; 9, scanning equipment; 10, sealing box; 11, second temperature and humidity sensor; 12, control gloves; 13, second return air pipe; 14, second circulation pump; 15, second outlet pipe; 16, second inlet pipe; 17, solution tank; 18, first inlet pipe; 19, first outlet pipe; 20, first circulation pump. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a long-term maintenance monitoring device and method for large-scale building blocks of buffer materials to solve the problems existing in the above-mentioned prior art, monitor the long-term changes of large-scale building blocks of buffer materials in a humid environment, and provide a technical reference for the long-term maintenance and storage of large-scale building blocks of buffer materials.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 to Figure 2As shown: This embodiment provides a long-term maintenance monitoring device 100 for large-scale building blocks made of buffer materials, comprising a transparent sealed box 10, wherein a monitoring area and a transition area separated by a partition 7 are arranged in the sealed box 10, the partition 7 is sealed and detachably connected to the sealed box 10, and two sets of control gloves 12 are arranged on the side walls of the sealed box 10, which are respectively located in the monitoring area and the transition area; the operator can control or take the items inside the sealed box 10 by using the control gloves 12 without opening the sealed box 10.

[0034] A weighing device 6 is provided in the monitoring area, and a bracket 3 is placed on the weighing plate of the weighing device 6. The bracket 3 is provided with a plurality of deformation sensors 4 surrounding the large building blocks 8 of buffer materials to be monitored, and the contacts of the deformation sensors 4 are in contact with the outer surface of the large building blocks 8 of buffer materials, and there is a gap between the large building blocks 8 of buffer materials and the bracket 3; further, deformation sensors 4 are distributed on each side surface and top surface of the large building blocks 8 of buffer materials to fully monitor the deformation of the large building blocks 8 of buffer materials.

[0035] The monitoring area is connected to the air inlet of the first circulation pump 20 through the first air return pipe 1, the air outlet of the first circulation pump 20 is connected to the closed solution pool 17 through the first air outlet pipe 19, the transition zone is connected to the air inlet of the second circulation pump 14 through the second air return pipe 13, the air outlet of the second circulation pump 14 is connected to the solution pool 17 through the second air outlet pipe 15, the first air outlet pipe 19 and the second air outlet pipe 15 are both extended into the saturated salt solution in the solution pool 17 at one end, the first air inlet pipe 18 is connected to the monitoring area at one end, and extends into the solution pool 17 at the other end and is located above the liquid level of the saturated salt solution in the solution pool 17 at the other end, and the second air inlet pipe 16 is connected to the transition zone at one end, and extends into the solution pool 17 at the other end and is located above the liquid level of the saturated salt solution in the solution pool 17 at the other end;

[0036] A plurality of equalizing containers 5 containing saturated salt solution are placed in the monitoring area, and the top of the equalizing container 5 is open. A scanning device 9 is arranged in the transition area, and the scanning device 9 is used to perform three-dimensional scanning on the large-scale building blocks 8 of the buffer material. The arrangement of a plurality of equalizing containers 5 is conducive to accelerating the environmental balance in the monitoring area and maintaining stability.

[0037] A first temperature and humidity sensor 2 is provided in the monitoring area, and a second temperature and humidity sensor 11 is provided in the transition area; the first temperature and humidity sensor 2, the second temperature and humidity sensor 11, the weighing device 6 and the deformation sensor 4 are respectively connected to the data acquisition system.

[0038] In this embodiment, the weighing device 6 is an electronic weighing instrument. The first air inlet pipe 18, the second air inlet pipe 16, the first air return pipe 1, the second air return pipe 13, the first air outlet pipe 19 and the second air outlet pipe 15 are all made of plastic to prevent corrosion and blockage by salt solution water vapor.

[0039] The present invention also provides a long-term maintenance monitoring method for large-scale building blocks made of buffer materials, based on the long-term maintenance monitoring device 100 for large-scale building blocks made of buffer materials, comprising the following steps:

[0040] (1) Determine the humidity of the saturated salt solution according to the moisture content of the large buffer material block 8 to be monitored, and place the saturated salt solution in the solution tank 17 and the equalization container 5;

[0041] (2) placing the weighing device 6 in the monitoring area of ​​the sealed box 10, placing the large-sized cushioning material block 8 at the center of the bracket 3, and making the plurality of deformation sensors 4 on the bracket 3 contact the outer surface of the large-sized cushioning material block 8;

[0042] (3) evenly placing multiple equalization containers 5 in the monitoring area;

[0043] (4) Connect the weighing device 6, the deformation sensor 4, the first temperature and humidity sensor 2, and the second temperature and humidity sensor 11 to the data acquisition system respectively, set the data acquisition system to collect data once every 10 minutes, and start data collection of the weighing device 6, the deformation sensor 4, the first temperature and humidity sensor 2, and the second temperature and humidity sensor 11;

[0044] (5) placing the large-sized cushioning material block 8 on the weighing plate of the weighing device 6, and then performing a three-dimensional scan of the large-sized cushioning material block 8 with the scanning device 9 by manipulating the glove 12;

[0045] (6) The partition 7 is sealed and connected to the sealing box 10 by manipulating the glove 12 so that the monitoring area and the transition area are isolated from each other, and the first circulation pump 20 is started to monitor the deformation and quality parameters of the large-scale building blocks 8 of the buffer material in the temperature and humidity environment in real time;

[0046] (7) After one week of real-time monitoring, the second circulation pump 14 is started. When the data of the second temperature and humidity sensor 11 in the transition zone is the same as the data of the first humidity sensor in the monitoring zone, the partition 7 is removed by manipulating the glove 12, and the large cushioning material block 8 is three-dimensionally scanned by the scanning device 9;

[0047] (8) After the scanning is completed, the partition 7 is installed by manipulating the glove 12, the second circulation pump 14 is turned off, and the changes of the large buffer material blocks 8 are continuously monitored;

[0048] (9) Repeat steps (7) and (8) until the deformation and quality of the large-scale buffer material blocks 8 are stable, and the test is terminated. It should be noted that the deformation and quality of the large-scale buffer material blocks 8 are stable, which specifically means that the deformation and quality of the large-scale buffer material blocks 8 no longer change. The specific judgment standard is that the large-scale buffer material blocks 8 are considered to have reached a stable state if the deformation does not exceed 0.001 mm and the mass change does not exceed 0.001 g within 24 hours.

[0049] Furthermore, a plurality of large building blocks 8 of buffer materials to be monitored may be prepared, the moisture content of different large building blocks 8 of buffer materials being different, and saturated salt solutions of different humidity levels being set for different large building blocks 8 of buffer materials. Long-term maintenance monitoring may be performed on the plurality of large building blocks 8 of buffer materials to be monitored, respectively, to obtain monitoring data of the large building blocks of buffer materials 8 with different moisture contents under different temperature and humidity conditions (the temperature may be controlled by the air conditioner in the laboratory so that the room temperature may have a variety of different temperatures and may be kept at a constant temperature, thereby controlling the experimental temperature of the long-term maintenance monitoring device 100 for large building blocks of buffer materials in the laboratory), so as to be able to comprehensively analyze and obtain suitable maintenance environment conditions for the large building blocks of buffer materials 8.

[0050] It should be noted that saturated aqueous solutions of different salts have different relative humidity values. The aforementioned salts may be LiCl, MgCl2, NaBr, NaCl, KCl or KNO3, etc., that is, different types of saturated salt solutions will have different relative humidity values. Therefore, the relative humidity that can be achieved in the space of the sealed box 10 can be adjusted by changing the type of saturated salt solution in the solution pool 17.

[0051] In the description of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A long-term maintenance monitoring device for large-scale buffer material blocks, characterized in that: The invention comprises a transparent sealed box, wherein a monitoring area and a transition area separated by a partition are arranged in the sealed box, wherein the partition is sealed and detachably connected to the sealed box, and two sets of control gloves are arranged on the side wall of the sealed box, which are respectively located in the monitoring area and the transition area; a weighing device is arranged in the monitoring area, and a bracket is placed on the weighing plate of the weighing device, and a plurality of deformation sensors surrounding a large building block of a buffer material to be monitored are arranged on the bracket, and the contact of the deformation sensor contacts the outer surface of the large building block of the buffer material, and there is a gap between the large building block of the buffer material and the bracket; the monitoring area is connected to the air inlet of a first circulation pump through a first return air pipe, The air outlet of the first circulation pump is connected to the closed solution pool through the first air outlet pipe, the transition zone is connected to the air inlet of the second circulation pump through the second air return pipe, the air outlet of the second circulation pump is connected to the solution pool through the second air outlet pipe, one end of the first air outlet pipe and the second air outlet pipe are both extended into the saturated salt solution in the solution pool, one end of the first air inlet pipe is connected to the monitoring zone, the other end is extended into the solution pool and is located above the liquid level of the saturated salt solution in the solution pool, one end of the second air inlet pipe is connected to the transition zone, the other end is extended into the solution pool and is located above the liquid level of the saturated salt solution in the solution pool; a scanning device is arranged in the transition zone; A plurality of equalizing containers containing saturated salt solutions are placed in the monitoring area, and the tops of the equalizing containers are open; a first temperature and humidity sensor is arranged in the monitoring area, and a second temperature and humidity sensor is arranged in the transition area; the first temperature and humidity sensor, the second temperature and humidity sensor, the weighing device and the deformation sensor are respectively connected to a data acquisition system.

2. The long-term maintenance monitoring device for large-scale buffer material blocks according to claim 1 is characterized in that: The weighing device is an electronic weighing instrument.

3. The long-term maintenance monitoring device for large-scale buffer material blocks according to claim 1 is characterized in that: The first air inlet pipe, the second air inlet pipe, the first air return pipe, the second air return pipe, the first air outlet pipe and the second air outlet pipe are all made of plastic.

4. A long-term maintenance monitoring method for large-scale buffer material blocks, characterized in that: The following steps are involved: (1) Determining the humidity of the saturated salt solution according to the moisture content of the large-scale buffer material blocks to be monitored, and placing the saturated salt solution in a solution tank and an equalizing container; (2) placing a weighing device in the monitoring area of ​​the sealed box, placing the large building block of the buffer material in the center of the bracket, and making the multiple deformation sensors on the bracket contact with the outer surface of the large building block of the buffer material; (3) evenly placing a plurality of the equalizing containers in the monitoring area; (4) Connect the weighing device, the deformation sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor to the data acquisition system respectively, set the data acquisition system to collect data once every 10 minutes, and start data collection of the weighing device, the deformation sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor; (5) placing the large building block of the cushioning material on the weighing plate of the weighing device, and then performing a three-dimensional scan of the large building block of the cushioning material using a scanning device by manipulating the gloves; (6) Using the gloves to seal the partition and the sealing box, the monitoring area and the transition area are isolated from each other, and the first circulation pump is started to monitor the deformation and quality parameters of the large-scale building blocks of the buffer material in the temperature and humidity environment in real time; (7) After real-time monitoring for a fixed period of time, the second circulation pump is started, and when the data of the second temperature and humidity sensor in the transition zone is the same as the data of the first humidity sensor in the monitoring zone, the partition is removed by the control glove, and the large-scale cushioning material block is scanned in three dimensions by the scanning device; (8) After the scan is completed, the partition is installed through the control glove, the second circulation pump is turned off, and the changes of the large blocks of the buffer material are continued to be monitored; (9) Repeat steps (7) and (8) until the deformation and quality of the large-scale building blocks of the buffer material are stable and the test is completed.

5. The long-term maintenance monitoring method for large-scale buffer material blocks according to claim 4 is characterized in that: The fixed time period in step (7) is one week.

6. The long-term maintenance monitoring method for large-scale buffer material blocks according to claim 4 is characterized in that: A plurality of large building blocks of the buffer material to be monitored are prepared, and different large building blocks of the buffer material have different moisture contents. Saturated salt solutions with different humidity levels are set for different large building blocks of the buffer material. Long-term maintenance monitoring is performed on the plurality of large building blocks of the buffer material to be monitored, and monitoring data of the large building blocks of the buffer material with different moisture contents under different temperature and humidity conditions are obtained.

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