CN217277241U - Special consolidation instrument for chemically polluted soil - Google Patents
Special consolidation instrument for chemically polluted soil Download PDFInfo
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- CN217277241U CN217277241U CN202220555906.XU CN202220555906U CN217277241U CN 217277241 U CN217277241 U CN 217277241U CN 202220555906 U CN202220555906 U CN 202220555906U CN 217277241 U CN217277241 U CN 217277241U
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- sample cylinder
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- 239000002689 soil Substances 0.000 title claims abstract description 108
- 238000007596 consolidation process Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 239000004575 stone Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- 239000011550 stock solution Substances 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 9
- 235000017491 Bambusa tulda Nutrition 0.000 description 9
- 241001330002 Bambuseae Species 0.000 description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 9
- 239000011425 bamboo Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000001802 infusion Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a special consolidation instrument for chemical contamination soil, this instrument has increased stock solution system, pneumatic transmission mechanism and pressurization system for prior art. The solution of the liquid storage system is pressed into the soil sample by adopting the pressurization system, so that the problems of the pollution degree of the soil sample, the pollution time of the soil sample and the repeated pollution of the soil sample can be solved; a displacement sensor is introduced, and the vertical pressure stress and the vertical displacement in the consolidation process can be collected through an air pressure transmission system; and introducing a substrate suction sensor and a water content sensor, and obtaining the change of the soil sample substrate suction and the water content according to the measured data, thereby obtaining the water-soil characteristic curve of the soil sample.
Description
Technical Field
The utility model belongs to the technical field of civil engineering test instrument, concretely relates to a special consolidation instrument for chemical contamination soil.
Background
The consolidometer, an industrial instrument, is used to measure the compression properties of soils under different loads and limited conditions. The method is commonly used for measuring the deformation characteristic of soil along with the change of time and calculating deformation indexes such as compression coefficient, compression index, compression modulus, consolidation coefficient and the like of the soil.
The problems of the consolidation test of the chemical polluted soil by adopting the conventional consolidometer are as follows: (1) the pollution degree of the soil sample cannot be controlled, and the interaction between the polluted solution and the soil body in the real environment cannot be simulated; (2) the influence of the change of the solution concentration on the consolidation effect of the soil sample cannot be judged; (3) the polluted soil sample cannot be subjected to repeated pollution, and the consolidation effect of the polluted soil sample subjected to repeated pollution at the later stage cannot be judged.
Disclosure of Invention
The utility model discloses a solve the unable control chemical solution of current consolidation instrument and the in-process of long-term effect of soil sample, the consolidation process of soil sample and the problem of evolution result provide a special consolidation instrument for chemical pollution soil.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a special consolidation instrument for chemically polluted soil comprises a consolidation container, a liquid storage system, an air pressure transmission mechanism, a pressurization system and a data acquisition system;
the consolidation container includes cavity soil sample section of thick bamboo, sets up base, the more than evenly distributed of 2 at least vertical pull rods all around at cavity soil sample section of thick bamboo, sets up lower permeable stone in the cavity soil sample section of thick bamboo of base top, set up the last permeable stone of cavity soil sample section of thick bamboo top, with cavity soil sample section of thick bamboo opening assorted bung, cavity soil sample section of thick bamboo passes through vertical pull rod and base fixed connection, go up the permeable stone and be used for loading the soil sample down between the permeable stone.
The liquid storage system comprises a solution tank, a first liquid storage barrel and a second liquid storage barrel.
The pneumatic transmission mechanism comprises a gas box, a horizontal rod, a piston rod and a pressurizing bolt, wherein the horizontal rod, the piston rod and the pressurizing bolt are arranged in the gas box, the piston rod is arranged above the horizontal rod and below the base, the pressurizing bolt is arranged right above the barrel cover, and the bottom of the pressurizing bolt is matched with the top of the barrel cover.
The pressurization system comprises an air compressor, a first pressure regulating valve and a second pressure regulating valve.
The data acquisition system comprises a first air pressure sensor, a second air pressure sensor, a substrate suction sensor, a water content sensor, a displacement sensor, a first collector, a second collector, a third collector, a fourth collector and a fifth collector.
The solution tank is arranged right below the base, the top and the bottom of the solution tank are respectively provided with a transfusion hole and a pressurizing hole, the part of the base, which is positioned below the hollow soil sample cylinder, is provided with a seepage hole and a second liquid discharge valve, the transfusion hole is connected to the seepage hole of the base through a transfusion pipe, the pressurizing hole is connected to an air compressor through a first pressurizing pipe, and the second liquid discharge valve is connected with a second liquid storage barrel through a second liquid discharge pipe; the barrel cover is provided with a first liquid discharge valve, and the first liquid discharge valve is connected with a first liquid storage barrel through a first liquid discharge pipe.
First baroceptor, first air-vent valve set gradually on the first forcing pipe between pressurization hole and air compressor machine, second baroceptor, second air-vent valve set gradually on the second forcing pipe between gas tank and air compressor machine, moisture content sensor and base suction rate sensor set up bottom and middle part in the same one side of cavity soil sample section of thick bamboo respectively, displacement sensor is located the top of pressure boost bolt to fix on a soil sample section of thick bamboo through the sensor support.
The first collector is connected with the displacement sensor through a first data line, the second collector is connected with the substrate suction sensor through a second data line, the third collector is connected with the moisture content sensor through a third data line, the fourth collector is connected with the second air pressure sensor through a fourth data line, and the fifth collector is connected with the first air pressure sensor through a fifth data line.
Furthermore, the base is provided with an annular groove for clamping the wall of the hollow soil sample cylinder, and the annular groove is provided with a sealing ring.
Furthermore, the number of the vertical pull rods is 2-4.
Further, the hollow soil sample cylinder is a transparent glass cylinder.
Further, the substrate suction rate sensor and the water content sensor are respectively arranged at the bottom and the middle of the same side of the hollow soil sample cylinder.
Through the technical scheme, the beneficial effects of the utility model are that:
the utility model adopts the process of pressing the solution into the soil sample by air pressure, which can solve the problems of the pollution degree of the soil sample, the pollution time of the soil sample and the repeated pollution of the soil sample; introducing a water content sensor, and judging whether main consolidation is finished or not according to measured data; and introducing a substrate suction sensor and a water content sensor, and obtaining the change of the soil sample substrate suction and the water content according to the measured data, thereby obtaining the water-soil characteristic curve of the soil sample.
Drawings
Fig. 1 is a schematic structural diagram of a special consolidation apparatus for chemically contaminated soil of the present invention.
Fig. 2 is a top view of the special consolidation apparatus base for chemically contaminated soil of the present invention.
In the figure: 1. a displacement sensor, 2, a sensor bracket, 3, a barrel cover, 4, a pressurizing bolt, 5, an upper permeable stone, 6, a hollow soil sample barrel, 7, a vertical pull rod, 8, a soil sample, 9, a lower permeable stone, 10, a base, 11, a first liquid discharge valve, 12, a first liquid discharge pipe, 13, a first liquid storage barrel, 14, a base suction sensor, 15, a water content sensor, 16, a seepage hole, 17, a second liquid discharge valve, 18, a second liquid discharge pipe, 19, a second liquid storage barrel, 20, a liquid conveying pipe, 21, a liquid conveying hole, 22, a solution tank, 23, a pressurizing hole, 24, a first pressurizing pipe, 25, a piston rod, 26, a horizontal rod, 27, an air tank, 28, a first air pressure sensor, 29, a first pressure regulating valve, 30, a second air pressure sensor, 31, a second pressure regulating valve, 32, a second pressurizing pipe, 33, a first data line, 34, a second data line, 35, a third data line, 36. a fourth data line 37, a fifth data line 38, a first collector 39, a second collector 40, a third collector 41, a fourth collector 42, a fifth collector 43, an air compressor 44, a circular groove
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description:
as shown in figure 1, the special consolidation apparatus for chemical contaminated soil comprises a consolidation container, a liquid storage system, a pneumatic transmission mechanism, a pressurization system and a data acquisition system. The consolidation container comprises a hollow soil sample cylinder 6, a base 10 arranged at the bottom of the soil sample cylinder 6, a vertical pull rod 7, a lower permeable stone 9 arranged in the hollow soil sample cylinder 6 above the base 10, an upper permeable stone 5 arranged above the hollow soil sample cylinder 6, and a barrel cover 3 matched with the opening of the soil sample cylinder 6, wherein the soil sample cylinder 6 is fixedly connected with the base 10 through the vertical pull rod 7 (the number of the vertical pull rod 7 is not limited, only 2 or more than 2 are required, preferably 2 to 4, and as can be seen from fig. 1 and 2, the number of the vertical pull rods 7 in the embodiment is two, the two sides of the hollow soil sample cylinder 6 are symmetrically distributed), and the upper permeable stone 5 and the lower permeable stone 9 are used for filling a soil sample 8.
The liquid storage system comprises a solution tank 22, a first liquid storage barrel 13 and a second liquid storage barrel 19.
The pneumatic transmission mechanism comprises an air box 27, a horizontal rod 26, a piston rod 25 and a pressurizing bolt 4, wherein the horizontal rod 26, the piston rod 25 and the pressurizing bolt 4 are arranged in the air box 27, the piston rod 25 is arranged above the horizontal rod 26 and below the base 10, the pressurizing bolt 4 is arranged right above the barrel cover 3, and the bottom of the pressurizing bolt 4 is matched with the top of the barrel cover 3.
The pressurization system includes an air compressor 43, a first pressure regulating valve 29 and a second pressure regulating valve 31.
The data acquisition system comprises a first air pressure sensor 28, a second air pressure sensor 30, a substrate suction sensor 14, a water content sensor 15, a displacement sensor 1, a first collector 38, a second collector 39, a third collector 40, a fourth collector 41 and a fifth collector 42.
The solution tank 22 is arranged right below the base 10, the top and the bottom of the solution tank 22 are respectively provided with an infusion hole 21 and a pressurization hole 23, the part of the base 10 below the lower permeable stone 9 is provided with an infiltration hole 16 and a second liquid discharge valve 17, the infusion hole 21 is connected to the infiltration hole 16 of the base 10 through an infusion tube 20, the pressurization hole 23 is connected to an air compressor 43 through a first pressurization tube 24, and the second liquid discharge valve 17 is connected to a second liquid storage barrel 19 through a second liquid discharge tube 18; the barrel cover 3 is provided with a first liquid discharge valve 11, and the first liquid discharge valve 11 is connected with a first liquid storage barrel 13 through a first liquid discharge pipe 12.
The first air pressure sensor 28 and the first pressure regulating valve 29 are sequentially arranged on the first pressure pipe 24 between the pressure hole 23 and the air compressor 43, the second air pressure sensor 30 and the second pressure regulating valve 31 are sequentially arranged on the second pressure pipe 32 between the air tank 27 and the air compressor 43, and the water content sensor 15 and the substrate suction rate sensor 14 are respectively arranged at the bottom and the middle of the same side of the hollow soil sample cylinder 6. (when using, then load soil sample 8 earlier, then put into soil sample 8 through the hole that sets up in corresponding lateral wall position with basement suction sensor 14 and moisture content sensor 15, all set up on the right side in this embodiment, it is more convenient pleasing to the eye like this, be convenient for observe simultaneously soil sample by the change condition of basement suction and moisture content when saturated state passes through to unsaturated state), displacement sensor 1 is located the top of pressure boost bolt 4 to fix on hollow soil sample section of thick bamboo 6 through sensor support 2.
The first collector 38 is connected with the displacement sensor 1 through a first data line 33, the second collector 39 is connected with the substrate suction sensor 14 through a second data line 34, the third collector 40 is connected with the moisture content sensor 15 through a third data line 35, the fourth collector 41 is connected with the second air pressure sensor 30 through a fourth data line 36, and the fifth collector 42 is connected with the first air pressure sensor 28 through a fifth data line 37.
As an implementation mode, the hollow soil sample cylinder 6 is a transparent glass cylinder, so that the change of the soil sample in the consolidation process can be directly observed, and the size of the hollow soil sample cylinder 6 is matched with that of the sampler, so that the secondary disturbance of the sampler to the undisturbed soil sample during sampling can be avoided.
In order to prevent the solution in the hollow soil sample cylinder 6 from seeping out, the joint between the hollow soil sample cylinder 6 and the base 10 needs to be sealed. The common gluing sealing mode can be adopted, and other known sealing modes can also be adopted. For example, as can be seen from fig. 2, as a more preferable embodiment, an annular groove 44 may be formed on the base 10, and a sealing ring may be further disposed on the annular groove 44, so that the base 10 can be conveniently clamped to the wall of the hollow soil sample cylinder 6, thereby preventing the solution in the hollow soil sample cylinder 6 from leaking out.
Adopt the utility model discloses a process that consolidation apparatus carries out the experiment as follows:
for the undisturbed soil sample, after vaseline is applied to the inner surface of the hollow soil sample cylinder 6 and the annular groove 44 of the base 10 in advance, the hollow soil sample cylinder 6 is clamped in the annular groove 44 of the base 10. The method comprises the steps of placing a lower permeable stone 9 and filter paper on a base 10, selecting a sampling tube matched with the inner diameter of a hollow soil sample cylinder 6, then pushing a soil sample into the hollow soil sample cylinder 6 from the sampling tube by using a soil pusher, sequentially placing the filter paper, an upper permeable stone 5 and a barrel cover 3 on the top of the soil sample 8, and finally fixing the hollow soil sample cylinder 6 and the base 10 by using two vertical pull rods 7.
Closing the second liquid discharge valve 17 and the second pressure regulating valve 31, opening the first liquid discharge valve 11, starting the air compressor 43, adjusting the pressure of the gas output by the air compressor 43 by opening the first pressure regulating valve 29, sensing the pressure in the first pressure pipe 24 by the first air pressure sensor 28 and feeding back the pressure to the fifth collector 42 through the fifth data line 37, so that the opening degree of the first pressure regulating valve 29 can be adjusted to make the pressure value displayed by the fifth collector 42 equal to the pressure setting value entering the solution tank 22, thereby enabling the air compressor 43 to pressurize the solution tank 22 through the first pressure pipe 24 and the pressure hole 23 according to the setting pressure, the solution in the solution tank 22 enters the soil sample 8 through the liquid conveying hole 21 and the liquid conveying pipe 20, and according to the requirements of soil sample pollution degree, pollution time and the like, after the redundant solution flows into the first liquid storage barrel 13 through the first liquid discharge pipe 12 communicated with the first liquid discharge valve 11, since the pressure required when the soil sample 8 is saturated is determined, the first drain valve 11, the first pressure regulating valve 29 and the fifth collector 42 should be closed. The second pressure regulating valve 31 is opened, the second air pressure sensor 30 is connected to the fourth collector 41 through the fourth data line 36, the opening degree of the second pressure regulating valve 31 is regulated to enable the pressure value displayed by the fourth collector 41 to be equal to the pressure setting value required to enter the air tank 27, so that the air compressor 43 can inject air into the air tank 27 through the second pressure pipe 32 according to the set pressure, when the air pressure in the air tank 27 reaches a certain intensity, the air in the air tank 27 pushes the horizontal rod 26 arranged in the air tank 27 to move upwards, the piston rod 25 in the air tank 27 pushes the whole consolidation container part to move upwards after being pushed by the horizontal rod 26, so that the barrel cover 3 is matched with the pressure-increasing bolt 4 to apply a vertical load to the soil sample 8 in the consolidation container, in the process, the displacement sensor 1 above the pressure-increasing bolt 4 detects the vertical displacement of the soil sample 8 due to the pressure of the pressure-increasing bolt 4, and the resulting data is passed to the first collector 38 via the first data line 33. The second drain valve 17 is opened, and during the pressurization process, the solution in the soil sample 8 flows into the second liquid storage barrel 19 through the second drain pipe 18 communicated with the second drain valve 17, the water content sensor 15 is connected to the third collector 40 through the third data line 35 for detecting the water content, and the substrate suction sensor 14 is connected to the second collector 39 through the second data line 34 for detecting the substrate suction. Meanwhile, the condition that the suction force of the substrate changes along with the water content of the soil sample 8 can be judged, and the water-soil characteristic curve of the soil sample 8 is drawn.
In the test, the vertical compression stress, the vertical displacement, the water content, the substrate suction and the like in the consolidation process are collected, and the relationship between the vertical displacement and the vertical compression stress, the relationship between the vertical displacement and the time, and the substrate suction and the water content relationship curve can be drawn through computer processing. In addition, parameters such as compression coefficient, compression index, compression modulus, consolidation coefficient and the like of the soil sample can be calculated according to engineering requirements.
Claims (5)
1. A special consolidation apparatus for chemical contaminated soil is characterized in that the consolidation apparatus comprises a consolidation container, a liquid storage system, a pneumatic transmission mechanism, a pressurization system and a data acquisition system;
the consolidation container comprises a hollow soil sample cylinder, a base arranged at the bottom of the hollow soil sample cylinder, at least more than 2 vertical pull rods uniformly distributed around the hollow soil sample cylinder, lower permeable stones arranged in the hollow soil sample cylinder above the base, upper permeable stones arranged above the hollow soil sample cylinder and a barrel cover matched with an opening of the hollow soil sample cylinder, wherein the hollow soil sample cylinder is fixedly connected with the base through the vertical pull rods, and soil samples are filled between the upper permeable stones and the lower permeable stones;
the liquid storage system comprises a solution tank, a first liquid storage barrel and a second liquid storage barrel;
the pneumatic transmission mechanism comprises a gas box, a horizontal rod, a piston rod and a pressurizing bolt, wherein the horizontal rod, the piston rod and the pressurizing bolt are arranged in the gas box;
the pressurization system comprises an air compressor, a first pressure regulating valve and a second pressure regulating valve;
the data acquisition system comprises a first air pressure sensor, a second air pressure sensor, a substrate suction sensor, a water content sensor, a displacement sensor, a first collector, a second collector, a third collector, a fourth collector and a fifth collector;
the solution tank is arranged right below the base, the top and the bottom of the solution tank are respectively provided with a transfusion hole and a pressurizing hole, the part of the base, which is positioned below the hollow soil sample cylinder, is provided with a seepage hole and a second liquid discharge valve, the transfusion hole is connected to the seepage hole of the base through a transfusion pipe, the pressurizing hole is connected to an air compressor through a first pressurizing pipe, and the second liquid discharge valve is connected with a second liquid storage barrel through a second liquid discharge pipe; the barrel cover is provided with a first liquid discharge valve, and the first liquid discharge valve is connected with a first liquid storage barrel through a first liquid discharge pipe;
the first air pressure sensor and the first pressure regulating valve are sequentially arranged on a first pressure pipe between the pressure hole and the air compressor, the second air pressure sensor and the second pressure regulating valve are sequentially arranged on a second pressure pipe between the air box and the air compressor, the water content sensor and the substrate suction rate sensor are respectively arranged at the bottom and the middle of the same side of the hollow soil sample cylinder, and the displacement sensor is positioned above the pressure bolt and fixed on the soil sample cylinder through a sensor support;
the first collector is connected with the displacement sensor through a first data line, the second collector is connected with the substrate suction sensor through a second data line, the third collector is connected with the moisture content sensor through a third data line, the fourth collector is connected with the second air pressure sensor through a fourth data line, and the fifth collector is connected with the first air pressure sensor through a fifth data line.
2. The specialized consolidation apparatus for chemically contaminated soils according to claim 1, characterized in that: the base is provided with an annular groove for clamping the wall of the hollow soil sample cylinder, and the annular groove is provided with a sealing ring.
3. The specialized consolidation apparatus for chemically contaminated soils according to claim 1 or 2, characterized in that: the number of the vertical pull rods is 2-4.
4. The specialized consolidation apparatus for chemically contaminated soils according to claim 1 or 2, characterized in that: the hollow soil sample cylinder is a transparent glass cylinder.
5. Special consolidation apparatus for chemically contaminated soils according to claim 1 or 2, characterised in that: the base suction rate sensor and the water content sensor are respectively arranged at the bottom and the middle of the same side of the hollow soil sample cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220555906.XU CN217277241U (en) | 2022-03-15 | 2022-03-15 | Special consolidation instrument for chemically polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220555906.XU CN217277241U (en) | 2022-03-15 | 2022-03-15 | Special consolidation instrument for chemically polluted soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217277241U true CN217277241U (en) | 2022-08-23 |
Family
ID=82860112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220555906.XU Active CN217277241U (en) | 2022-03-15 | 2022-03-15 | Special consolidation instrument for chemically polluted soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217277241U (en) |
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2022
- 2022-03-15 CN CN202220555906.XU patent/CN217277241U/en active Active
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| GR01 | Patent grant | ||
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Address after: 464000 middle section of Xinliu street, Yangshan New District, Xinyang City, Henan Province Patentee after: China Building Materials (Henan) Survey and Design Co.,Ltd. Country or region after: China Address before: Henan Building Materials Geological Engineering Survey Institute Co., Ltd., the middle section of Xinliu Street, Yangshan New District, Xinyang City, Henan Province, 464000 Patentee before: Henan Building Materials Geological Engineering Survey Institute Co.,Ltd. Country or region before: China |