CN111366607A - Device and method for testing high-temperature expansion amount of buffer material - Google Patents
Device and method for testing high-temperature expansion amount of buffer material Download PDFInfo
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- CN111366607A CN111366607A CN202010433885.XA CN202010433885A CN111366607A CN 111366607 A CN111366607 A CN 111366607A CN 202010433885 A CN202010433885 A CN 202010433885A CN 111366607 A CN111366607 A CN 111366607A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G01—MEASURING; TESTING
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- G01N33/246—Earth materials for water content
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- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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Abstract
The invention discloses a device and a method for testing high-temperature expansion of a buffer material, wherein the device comprises: the device comprises a water bath box body, a heater, a pressure chamber base, a pressure chamber, a piston and a dial indicator; the pressure chamber is a hollow cylinder with a cylindrical hole; a first permeable stone, a second permeable stone, a buffer material test sample and a third permeable stone are sequentially arranged in a cylindrical hole of the pressure chamber from bottom to top; the lower surface of the piston is contacted with a third permeable stone; the pressure chamber base is also provided with a water inlet pore passage and a water outlet pore passage which are communicated with the first permeable stone and the water bath box body; the dial indicator is fixed with the pressure chamber through a dial indicator bracket; and the sensing surface of the dial indicator is contacted with the upper surface of the piston. According to the invention, the soaking solution in the water bath box body is heated by the heater in the water bath box body, a real soaking environment of the buffer material is simulated by the permeable stone communicated with the water bath box body, and the expansion amount of the buffer material is measured by the dial indicator, so that the measurement of the high-temperature expansion amount of the buffer material is realized.
Description
Technical Field
The invention relates to the technical field of buffer material analysis, in particular to a device and a method for testing high-temperature expansion of a buffer material.
Background
The buffer material is used as an important component of a multiple barrier system in a disposal warehouse and plays a role of an engineering barrier and a hydraulic barrier. In a high-level waste disposal warehouse, bentonite used as a buffer material needs to seal gaps between surrounding rocks of the warehouse and a waste tank and cracks of near-field surrounding rocks and relieve the effect of surrounding rock pressure in a stratum on the waste tank, so that a certain expansion force and a certain expansion deformation capacity are needed, and the expansion performance of the buffer material bentonite needs to be researched.
It has been found that bentonite, which contains montmorillonite as the main component, is the most suitable cushioning material. The buffer material inevitably undergoes expansion deformation under the action of underground water, the expansion deformation of the bentonite at different temperatures is greatly different, the magnitude of the expansion force is matched with the pressure or strength of surrounding rocks, and otherwise the stress balance of a disposal warehouse system is possibly damaged to generate potential safety hazards. However, under real conditions, the decay heat of the high-level waste inevitably causes expansion deformation of the buffer material, which directly affects the number and the spacing distribution of the waste tanks. Therefore, how to measure the high-temperature expansion amount of the buffer material, provide measurement data for the design of a disposal library system, reduce potential safety hazards and become a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a device and a method for testing the high-temperature expansion amount of a buffer material, so as to realize the measurement of the high-temperature expansion amount of the buffer material, provide measurement data for the design of a disposal library system and reduce potential safety hazards.
In order to achieve the purpose, the invention provides the following scheme:
a test apparatus for testing high temperature expansion of a cushioning material, the test apparatus comprising: the device comprises a water bath box body, a heater, a pressure chamber base, a pressure chamber, a piston and a dial indicator;
the water bath box body is filled with a soaking solution; the soaking solution is deionized water, underground water or saturated salt solution;
the pressure chamber is fixed on the pressure chamber base; the pressure chamber base, the pressure chamber and the heater are all arranged in the water bath box body;
the pressure chamber is a hollow cylinder with a cylindrical hole; a first permeable stone, a second permeable stone, a buffer material test sample and a third permeable stone are sequentially arranged in the cylindrical hole of the pressure chamber from bottom to top; the piston is arranged in the cylindrical hole; the lower surface of the piston is in contact with the third permeable stone;
the pressure chamber base is also provided with a water inlet pore passage and a water outlet pore passage which are communicated with the first permeable stone and the water bath box body;
the dial indicator is fixed with the pressure chamber through a dial indicator bracket; and the sensing surface of the dial indicator is in contact with the upper surface of the piston.
Optionally, a netted platform is arranged inside the water bath box body, the pressure chamber base is arranged on the platform, and the heater is arranged between the platform and the lower surface of the water bath box body.
Optionally, a circular groove is arranged on the pressure chamber base, and the circular groove is located right below the cylindrical hole;
first permeable stone sets up in the circular recess, the upper surface of first permeable stone with the upper surface of pressure chamber base flushes.
Optionally, the pressure chamber is fixed to the pressure chamber base by a bolt and a nut.
Optionally, an O-ring seal is disposed between the pressure chamber and the pressure chamber base.
Optionally, the testing device further comprises a data acquisition system;
and the data acquisition system is connected with the dial indicator and is used for acquiring and storing the expansion information of the test sample of the buffer material measured by the dial indicator.
A test method for the high-temperature expansion amount of a buffer material applies the test device;
the test method comprises the following steps:
placing a test sample of the buffer material in the testing device, and storing a soaking solution in a water bath box body of the testing device; the soaking solution is deionized water, underground water or saturated salt solution;
heating the soaking solution in the water bath box body to a set temperature;
measuring the expansion amount of the test sample of the buffer material with different soaking time by using a dial indicator;
establishing a swelling amount change curve according to the swelling amounts of the test samples of the buffer material with different soaking times;
judging whether the test sample of the buffer material is saturated or not according to the expansion amount change curve to obtain a first judgment result;
if the first judgment result shows that the test sample of the buffer material is not saturated, returning to the step of measuring the expansion amount of the test sample of the buffer material with different soaking time by using a dial indicator, and continuing the experiment;
if the first judgment result shows that the test sample of the buffer material is saturated, stopping the experiment, and determining the maximum expansion amount of the test sample of the buffer material according to the expansion amount change curve;
taking out the soaked test sample of the buffer material, equally dividing the soaked test sample of the buffer material into a plurality of layers along the height direction, and respectively measuring the dry density and the water content of each layer of the soaked test sample of the buffer material;
and comparing the dry density and the water content of the test sample of the buffer material after each layer of soaking to determine the saturation uniformity of the test sample of the buffer material.
Optionally, whether the test sample of the buffer material is saturated or not is judged according to the expansion amount change curve to obtain a first judgment result, and the method specifically comprises the following steps:
determining the difference value of the expansion amount at a preset time interval according to the expansion amount change curve;
judging whether the difference value of the expansion amounts is smaller than an expansion amount change threshold value or not to obtain a second judgment result;
if the second judgment result shows that the difference value of the expansion amounts is larger than the expansion amount change threshold value, the first judgment result shows that the test sample of the buffer material does not reach saturation;
and if the second judgment result shows that the difference value of the expansion amounts is not larger than the expansion amount change threshold, the first judgment result shows that the test sample of the buffer material is saturated.
Optionally, the step of comparing the dry density and the water content of the buffer material test sample after each layer of soaking, and determining the saturation uniformity of the buffer material test sample further includes:
different soaking solutions are respectively stored in the water bath box body, the test samples of the buffer material with the same density are tested, and under the same temperature condition, the maximum expansion amount of the different soaking solutions is determined, so that the influence of the soaking solutions on the maximum expansion amount of the test samples of the buffer material is determined.
Optionally, the step of comparing the dry density and the water content of the buffer material test sample after each layer of soaking, and determining the saturation uniformity of the buffer material test sample further includes:
respectively heating the soaking solution in the water bath box body to different set temperatures, testing the buffer material test sample with the same density, determining the maximum expansion amount of the buffer material test sample under different temperature conditions in the same soaking solution, and determining the influence of the temperature conditions on the maximum expansion amount of the buffer material test sample.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a device and a method for testing high-temperature expansion of a buffer material, wherein the device comprises: the device comprises a water bath box body, a heater, a pressure chamber base, a pressure chamber, a piston and a dial indicator; the pressure chamber is fixed on the pressure chamber base; the pressure chamber base, the pressure chamber and the heater are all arranged in the water bath box body; the pressure chamber is a hollow cylinder with a cylindrical hole; a first permeable stone, a second permeable stone, a buffer material test sample and a third permeable stone are sequentially arranged in the cylindrical hole of the pressure chamber from bottom to top; the piston is arranged in the cylindrical hole; the lower surface of the piston is in contact with the third permeable stone; the pressure chamber base is also provided with a water inlet pore passage and a water outlet pore passage which are communicated with the first permeable stone and the water bath box body; the dial indicator is fixed with the pressure chamber through a dial indicator bracket; and the sensing surface of the dial indicator is in contact with the upper surface of the piston. According to the invention, the soaking solution in the water bath box body is heated by the heater in the water bath box body, a real soaking environment of the buffer material is simulated by the permeable stone communicated with the water bath box body, and the expansion amount of the buffer material is measured by the dial indicator, so that the measurement of the high-temperature expansion amount of the buffer material is realized, and measurement data is provided for the design of a disposal warehouse system.
The device can heat the soaking solution to different temperatures through the heater so as to test the expansion amount of the buffer material under different high-temperature conditions, and can also set different soaking solutions in the water bath box body so as to test the expansion amount of the buffer material in different soaking solutions, thereby providing parameter basis for the design and construction of the high-level waste geological disposal library.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a structural diagram of a device for testing the high-temperature expansion amount of a cushioning material according to the present invention;
FIG. 2 is a flow chart of a method for testing the high-temperature expansion amount of the cushioning material according to the present invention;
in the figure 1, 1-a water inlet channel, 2-permeable stones (a first permeable stone, a second permeable stone and a third permeable stone in sequence from bottom to top), 3-a pressure chamber, 4-bolts, 5-nuts, 6-a stainless steel piston, 7-a dial indicator, 8-a dial indicator bracket, 9-a water bath box body, 10-a test sample, 11-a sealing ring, 12-a pressure chamber base, 13-a water outlet channel, 14-a platform and 15-a heater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a device and a method for testing the high-temperature expansion amount of a buffer material, so as to realize the measurement of the high-temperature expansion amount of the buffer material, provide measurement data for the design of a disposal library system and reduce potential safety hazards.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
As shown in FIG. 1, the piston of the present invention may be, but is not limited to, a stainless steel piston. The invention provides a testing device for high-temperature expansion of a buffer material, which mainly comprises: the water-permeable test device comprises a water inlet pore passage 1, a permeable stone 2, a pressure chamber 3, a bolt 4, a nut 5, a stainless steel piston 6, a dial indicator 7, a dial indicator bracket 8, a water bath box body 9, a test sample 10, a sealing ring 11, a pressure chamber base 12, a water outlet pore passage 13, a platform 14 and a heater 15.
Wherein, the pressure chamber base 14, the pressure chamber 3 above the pressure chamber base 14 and the stainless steel piston 6 in the pressure chamber 3 are made of stainless steel with high rigidity and corrosion resistance. The side surface of the lower part of the pressure chamber base 12 is provided with a water inlet hole channel 1 and a water outlet hole channel 13, and the water inlet hole channel 1 is connected with the soaking solution (deionized water) in the water bath box body 9; a round groove is arranged at the upper part of the pressure chamber base 12, a permeable stone 2 (first permeable stone) is arranged in the round groove, the permeable stone 2 is arranged above the water inlet hole channel 1 and the water outlet hole channel 13, and the height of the permeable stone 2 is flush with that of the upper surface of the pressure chamber base 12; the pressure chamber base 12 is provided with an O-shaped sealing ring 11 which is contacted with the pressure chamber base 12 and the pressure chamber 3; the sealing ring 11 is made of fluororubber, is high temperature resistant, has good elasticity, can bear certain extrusion deformation, and prevents water from flowing out from a gap between the pressure chamber base 12 and the pressure chamber 3; the pressure chamber base 12 and the pressure chamber 3 are fastened with a nut 5 through a bolt 4, the pressure chamber 3 is hollow and is used for placing a test sample 10, a permeable stone 2 (a second permeable stone and a third permeable stone) is respectively placed on the upper surface and the lower surface of the test sample 10, the hollow part of the pressure chamber 3 is a cylindrical hole, a stainless steel piston 6 is inserted into the cylindrical hole, and the lower end of the stainless steel piston is in contact with the permeable stone 2; the dial indicator 7 and the dial indicator bracket 8 are fixed on the bolt 4, and the sensing surface of the dial indicator 7 is contacted with the upper surface of the stainless steel piston 6; the top of the water bath box body 9 is provided with a circular hole slightly larger than the diameter of the pressure chamber, the pressure chamber 3 is placed on the platform 14 from the circular hole, the top surface of the pressure chamber 3 is slightly higher than the top surface of the water bath box body 9, the heater 15 can heat deionized water in the water bath box body 9, after the test sample 10 absorbs water and expands, the position of the stainless steel piston 6 changes, and the dial indicator 7 records the change process in real time to finish the test of high-temperature expansion amount.
Example 2
As shown in fig. 2, the present invention further provides a method for testing the high temperature expansion amount of the cushioning material, wherein the method comprises the following steps:
If the first judgment result shows that the test sample of the buffer material is not saturated, returning to the step of measuring the expansion amount of the test sample of the buffer material with different soaking time by using a dial indicator, and continuing the experiment;
and 208, comparing the dry density and the water content of the buffer material test sample after each layer of soaking to determine the saturation uniformity of the buffer material test sample.
The method of step 201 to step 208 is also adopted in the invention, different soaking solutions are respectively stored in the water bath box body, the test sample of the buffer material with the same density is tested, and under the same temperature condition, the maximum expansion amount of the different soaking solutions is determined, and the influence of the soaking solution on the maximum expansion amount of the test sample of the buffer material is determined. Respectively heating the soaking solution in the water bath box body to different set temperatures, testing the buffer material test sample with the same density, determining the maximum expansion amount of the buffer material test sample under different temperature conditions in the same soaking solution, and determining the influence of the temperature conditions on the maximum expansion amount of the buffer material test sample.
Example 3
The invention also provides a specific implementation mode of the testing method for the high-temperature expansion amount of the buffer material, which comprises the following specific steps:
(1) According to the preset parameters of dry density, volume and water content, calculating and weighing bentonite powder with corresponding mass, and pouring the bentonite powder into a compaction mould;
(2) the test sample 10 was prepared by uniaxial static pressing while measuring the mass, height and diameter data of the test sample 10.
(3) Assembling the pressure chamber 3 with the bolt 4 and the nut 5;
(4) placing the permeable stone 2 in a groove of a pressure chamber base 12, and sequentially placing a test sample 10 and the permeable stone 2;
(5) placing a stainless steel piston 6 above the permeable stone 2 in the pressure chamber 3, fixing a dial indicator 7 and a dial indicator bracket 18, and integrally placing the whole body in a water bath box body 9;
(6) after the pressure chamber 3 is placed, adding a proper amount of soaking solution (such as deionized water, underground water or saturated salt solution) into a water bath box body 9, wherein the liquid level of the added solution is not less than 2cm higher than that of the test sample by 10;
(7) Adjusting the water bath tank to a specified temperature in advance, starting a data acquisition system, setting the acquisition frequency within the first 48 hours as 10s for once acquisition, and setting the acquisition frequency after 48 hours as 600s for once acquisition;
(8) recording a time-dependent change curve of the dial indicator 7, and recording the expansion amount at the moment as the maximum expansion amount of the sample under the temperature condition when the numerical value of the dial indicator is not more than 0.001mm within 6 hours;
(9) after the expansion amount is stable under a certain temperature condition, regulating the temperature of the water bath box body 9 to the next temperature, recording the change curve of the dial indicator 7 along with the time, and recording the expansion amount at the moment as the maximum expansion amount of the sample under the temperature condition when the numerical value of the dial indicator is not more than 0.001mm within 6 hours; repeating the steps until the test of all the temperature sections is finished;
(10) After the test is finished, disassembling the test, equally cutting the sample into 5 layers along the height direction, respectively detecting the dry density and the water content of the test sample after the test, analyzing the saturation uniformity of the sample, and verifying whether the sample reaches the maximum expansion value;
(11) carrying out comparative analysis on the expansion amounts of samples with the same density under different soaking solutions under the same temperature condition to reveal the influence of the soaking solutions on the maximum expansion amount of the samples; in the same way, the expansion amounts of samples with the same density under the same soaking solution under different temperature conditions are compared and analyzed, and the influence of the temperature conditions on the maximum expansion amount of the samples is revealed; through test analysis under different temperature conditions, different soaking solutions and different temperature conditions, test influence factors are revealed, and parameter basis is provided for subsequent disposal library design.
The device and the method for testing the high-temperature expansion amount of the buffer material can realize the performance test of the expansion amount of the sample under different temperature gradient conditions and different soaking solution conditions, the temperature control of the bentonite water inlet and the water bath is consistent, and the influence of temperature change on the sample test is effectively reduced.
The equivalent embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts between the equivalent embodiments can be referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (10)
1. A test device for testing high-temperature expansion amount of a cushioning material, characterized by comprising: the device comprises a water bath box body, a heater, a pressure chamber base, a pressure chamber, a piston and a dial indicator;
the water bath box body is filled with a soaking solution; the soaking solution is deionized water, underground water or saturated salt solution;
the pressure chamber is fixed on the pressure chamber base; the pressure chamber base, the pressure chamber and the heater are all arranged in the water bath box body;
the pressure chamber is a hollow cylinder with a cylindrical hole; a first permeable stone, a second permeable stone, a buffer material test sample and a third permeable stone are sequentially arranged in the cylindrical hole of the pressure chamber from bottom to top; the piston is arranged in the cylindrical hole; the lower surface of the piston is in contact with the third permeable stone;
the pressure chamber base is also provided with a water inlet pore passage and a water outlet pore passage which are communicated with the first permeable stone and the water bath box body;
the dial indicator is fixed with the pressure chamber through a dial indicator bracket; and the sensing surface of the dial indicator is in contact with the upper surface of the piston.
2. The device for testing the high-temperature expansion amount of the buffer material as claimed in claim 1, wherein a netted platform is arranged inside the water bath tank body, the pressure chamber base is arranged on the platform, and the heater is arranged between the platform and the lower surface of the water bath tank body.
3. The device for testing the high-temperature expansion amount of the buffer material as claimed in claim 1, wherein a circular groove is arranged on the pressure chamber base, and the circular groove is positioned right below the cylindrical hole;
first permeable stone sets up in the circular recess, the upper surface of first permeable stone with the upper surface of pressure chamber base flushes.
4. The device for testing the high-temperature expansion amount of a cushioning material according to claim 1,
the pressure chamber is fixed on the pressure chamber base through a bolt and a nut.
5. The device for testing the high-temperature expansion amount of a cushioning material according to claim 1,
an O-shaped sealing ring is arranged between the pressure chamber and the pressure chamber base.
6. The device for testing the high-temperature expansion amount of the buffer material according to claim 1, wherein the device further comprises a data acquisition system;
and the data acquisition system is connected with the dial indicator and is used for acquiring and storing the expansion information of the test sample of the buffer material measured by the dial indicator.
7. A method for measuring the high-temperature expansion amount of a cushioning material, which comprises applying the test apparatus according to any one of claims 1 to 6;
the test method comprises the following steps:
placing a test sample of the buffer material in the testing device, and storing a soaking solution in a water bath box body of the testing device; the soaking solution is deionized water, underground water or saturated salt solution;
heating the soaking solution in the water bath box body to a set temperature;
measuring the expansion amount of the test sample of the buffer material with different soaking time by using a dial indicator;
establishing a swelling amount change curve according to the swelling amounts of the test samples of the buffer material with different soaking times;
judging whether the test sample of the buffer material is saturated or not according to the expansion amount change curve to obtain a first judgment result;
if the first judgment result shows that the test sample of the buffer material is not saturated, returning to the step of measuring the expansion amount of the test sample of the buffer material with different soaking time by using a dial indicator, and continuing the experiment;
if the first judgment result shows that the test sample of the buffer material is saturated, stopping the experiment, and determining the maximum expansion amount of the test sample of the buffer material according to the expansion amount change curve;
taking out the soaked test sample of the buffer material, equally dividing the soaked test sample of the buffer material into a plurality of layers along the height direction, and respectively measuring the dry density and the water content of each layer of the soaked test sample of the buffer material;
and comparing the dry density and the water content of the test sample of the buffer material after each layer of soaking to determine the saturation uniformity of the test sample of the buffer material.
8. The method for testing the high-temperature expansion amount of the buffer material according to claim 7, wherein whether the test sample of the buffer material is saturated or not is judged according to the expansion amount change curve to obtain a first judgment result, and specifically comprises:
determining the difference value of the expansion amount at a preset time interval according to the expansion amount change curve;
judging whether the difference value of the expansion amounts is smaller than an expansion amount change threshold value or not to obtain a second judgment result;
if the second judgment result shows that the difference value of the expansion amounts is larger than the expansion amount change threshold value, the first judgment result shows that the test sample of the buffer material does not reach saturation;
and if the second judgment result shows that the difference value of the expansion amounts is not larger than the expansion amount change threshold, the first judgment result shows that the test sample of the buffer material is saturated.
9. The method for testing the high-temperature expansion amount of the buffer material according to claim 7, wherein the step of comparing the dry density and the water content of the test sample of the buffer material after each layer of soaking further comprises the following steps after determining the saturation uniformity of the test sample of the buffer material:
different soaking solutions are respectively stored in the water bath box body, the test samples of the buffer material with the same density are tested, and under the same temperature condition, the maximum expansion amount of the different soaking solutions is determined, so that the influence of the soaking solutions on the maximum expansion amount of the test samples of the buffer material is determined.
10. The method for testing the high-temperature expansion amount of the buffer material according to claim 7, wherein the step of comparing the dry density and the water content of the test sample of the buffer material after each layer of soaking further comprises the following steps after determining the saturation uniformity of the test sample of the buffer material:
respectively heating the soaking solution in the water bath box body to different set temperatures, testing the buffer material test sample with the same density, determining the maximum expansion amount of the buffer material test sample under different temperature conditions in the same soaking solution, and determining the influence of the temperature conditions on the maximum expansion amount of the buffer material test sample.
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| CN202010433885.XA CN111366607A (en) | 2020-05-21 | 2020-05-21 | Device and method for testing high-temperature expansion amount of buffer material |
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| CN202010433885.XA CN111366607A (en) | 2020-05-21 | 2020-05-21 | Device and method for testing high-temperature expansion amount of buffer material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781295A (en) * | 2020-07-10 | 2020-10-16 | 核工业北京地质研究院 | PH/EH test method |
| CN112858156A (en) * | 2021-01-25 | 2021-05-28 | 核工业北京地质研究院 | Bentonite erosion simulation test device and test method |
-
2020
- 2020-05-21 CN CN202010433885.XA patent/CN111366607A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781295A (en) * | 2020-07-10 | 2020-10-16 | 核工业北京地质研究院 | PH/EH test method |
| CN112858156A (en) * | 2021-01-25 | 2021-05-28 | 核工业北京地质研究院 | Bentonite erosion simulation test device and test method |
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