CN210775478U - Soil freezing depth testing device - Google Patents
Soil freezing depth testing device Download PDFInfo
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- CN210775478U CN210775478U CN201921451669.7U CN201921451669U CN210775478U CN 210775478 U CN210775478 U CN 210775478U CN 201921451669 U CN201921451669 U CN 201921451669U CN 210775478 U CN210775478 U CN 210775478U
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- moisture sensor
- soil moisture
- depth testing
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Abstract
The utility model discloses a soil freezing depth testing device, relating to the technical field of soil testing; the device includes data collection station, solar energy power supply unit, temperature chain and the soil moisture sensor that connects gradually, temperature chain and soil moisture sensor with data collection station links to each other, power supply unit links to each other with data collection station, and the device can long-term online normal position real-time supervision state of freezing at that time for whole device provides to can be with data wireless transmission to server, need not artifical site survey, provide reliable precision data for traffic engineering design, practice thrift the cost of labor greatly.
Description
Technical Field
The utility model relates to a soil test technical field especially relates to a soil freezes degree of depth testing arrangement.
Background
The presence of frozen earth is mainly influenced by temperature. The permafrost area of China accounts for 22.3 percent of the territorial area of China and is third in the world. Wherein the permafrost at high latitude is mainly and intensively distributed in big and small Khingan mountains, and the area is 38-39 ten thousand square kilometers; high altitude permafrost is distributed in Qinghai-Tibet plateau, Altai mountain, Tianshan mountain, Qilian mountain, transection mountain, Himalayashan mountain and some mountainous regions of east, and is the most abundant in the world. The frozen soil is a soil body medium which is extremely sensitive to temperature and contains abundant underground ice. Frozen earth has rheological properties due to the migration of moisture and the phase change characteristics. Its long-term strength is far lower than the instantaneous strength characteristic, and it has melting sinking property and frost heaviness. These characteristics cause two major engineering problems in the construction of traffic engineering structures in frozen soil areas: thaw collapse and frost heaving. Wherein, roadbeds, bridges, tunnels and the like are all troubled by the two engineering problems. Therefore, methods for monitoring the freezing depth of the road and judging the freezing state are problems to be solved urgently in traffic engineering.
The depth of frozen earth is measured by placing a plastic tube filled with distilled water and sealed at both ends, vertically in a tube barrel buried in the earth. Which section freezes which section does not freeze and is clear at a glance. The method is actually used for observing the position of the ground temperature of 0 ℃, and the position of the frozen soil cannot be accurately measured. The method is not scientific in observing the depth of frozen soil because the freezing temperatures are different depending on the texture of soil, the composition and concentration of aqueous solution, and external conditions such as pressure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soil freezing degree of depth testing arrangement to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a soil freezing degree of depth testing arrangement, includes data collection station, soil moisture sensor and temperature chain, the temperature chain with soil moisture sensor is connected to data collection station.
Preferably, the data collector is a DL1000 data collector.
Preferably, the temperature chain comprises a plurality of consecutively connected temperature nodes, which are installed in the soil.
Preferably, each temperature node is spaced 15cm apart.
Preferably, the soil moisture sensor is installed between every two temperature nodes.
Preferably, the soil moisture sensor is a cs616 soil moisture sensor.
Preferably, the testing device further comprises a power supply device, and the power supply device is connected with the data acquisition unit and supplies power to the whole device.
Preferably, the power supply device is a solar panel.
The utility model has the advantages that:
the utility model discloses a soil freezing degree of depth testing arrangement, the device can be long-term online normal position real-time supervision state of freezing at that time to can need not artifical site survey with data wireless transmission to server, provide reliable precision data for traffic engineering design, practice thrift the cost of labor greatly.
Drawings
FIG. 1 is a schematic structural view of a soil freezing depth test apparatus according to example 1;
FIG. 2 is a schematic view of the soil freezing depth calculation in example 1;
1 is a solar cell panel, 2 is a data collector, 3 is a temperature chain, 4 is a temperature node, 5 is a soil moisture sensor, 6 is a zero point temperature node, a is a full length of the temperature chain, B is a length of the temperature chain below zero point, and C is a temperature chain which is not embedded in a soil layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
Example 1
This embodiment provides a soil freezing degree of depth testing arrangement, and the device includes data collection station, solar energy power supply unit, temperature chain and the soil moisture sensor who connects gradually, temperature chain and soil moisture sensor with data collection station links to each other, power supply unit links to each other with data collection station, provides the power for whole device. The power supply equipment is a solar panel.
The temperature chain is a plurality of temperature nodes connected in succession, and temperature node and soil moisture sensor bury in the soil below the earth's surface simultaneously in proper order. The distance between the temperature nodes is 10cm, a soil moisture sensor is arranged between every two temperature nodes, and the phase change of water in the soil is changed from water to ice along with the change of temperature in the soil freezing process. The approximate freezing position is judged by monitoring the temperature value monitored by each node, the freezing position is accurately positioned by checking the monitoring value of the soil moisture sensor, and the freezing thickness is calculated by a calculation formula.
In this embodiment, the data collector is a DL1000 data collector, the soil moisture sensor is a CS616 soil moisture sensor, and the temperature chain sensor is a CS225 temperature chain sensor.
During testing, the DL1000 data collector judges the position of the ground temperature of 0 ℃ according to the underground temperature data collected by the CS225, then accurately judges the depth position of the frozen layer according to the soil moisture data collected by the two nearest CS616, as shown in FIG. 2, firstly, the position of the temperature node above the zero point is measured through the temperature node of the temperature chain sensor and the soil moisture sensor, then the length B of the temperature chain below the zero point is obtained, then, the length D of the temperature chain embedded in the soil layer is obtained through calculation of the total length A of the temperature chain and the length C of the temperature chain sensor not embedded in the soil layer, and finally, the depth of the frozen layer can be obtained. After the data of the depth of the frozen layer is acquired, the acquired data can be transmitted to a server in real time through the internet technology by using a wireless communication module arranged on a data acquisition unit, so that the function of monitoring the thickness of the frozen layer in a full-automatic online manner is realized.
Note that in the actual test, the length C of the non-buried soil layer of the temperature chain sensor is set according to the actual situation according to the depth of the buried soil layer.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model discloses a soil freezing degree of depth testing arrangement, the device can be long-term online normal position real-time supervision state of freezing at that time to can need not artifical site survey with data wireless transmission to server, provide reliable precision data for traffic engineering design, practice thrift the cost of labor greatly.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (8)
1. The utility model provides a soil freezing degree of depth testing arrangement which characterized in that, includes data collection station, the soil moisture sensor and the temperature chain of establishing ties in proper order, the temperature chain with soil moisture sensor is connected to data collection station, soil moisture sensor with temperature chain parallel arrangement.
2. A soil freeze depth testing device according to claim 1, wherein the data collector is a DL1000 data collector.
3. The soil freeze depth testing apparatus of claim 1, wherein the temperature chain includes a plurality of serially connected temperature nodes, the temperature nodes being installed within the soil.
4. A soil freeze depth test apparatus according to claim 3, wherein each temperature node is spaced 15cm apart.
5. A soil freeze depth test device according to claim 3, wherein the soil moisture sensor is installed between every two temperature nodes.
6. The soil freeze depth testing device of claim 1, wherein the soil moisture sensor is a cs616 soil moisture sensor.
7. The soil freezing depth testing device of claim 1, wherein the testing device further comprises a power supply device, and the power supply device is connected with the data acquisition unit and supplies power to the whole device.
8. A soil freeze depth testing apparatus according to claim 7 wherein the power supply device is a solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921451669.7U CN210775478U (en) | 2019-09-03 | 2019-09-03 | Soil freezing depth testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921451669.7U CN210775478U (en) | 2019-09-03 | 2019-09-03 | Soil freezing depth testing device |
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| Publication Number | Publication Date |
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| CN210775478U true CN210775478U (en) | 2020-06-16 |
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| CN201921451669.7U Active CN210775478U (en) | 2019-09-03 | 2019-09-03 | Soil freezing depth testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588920A (en) * | 2021-07-22 | 2021-11-02 | 北京安赛博技术有限公司 | Method, system, equipment and medium for identifying and monitoring soil freezing and thawing process |
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2019
- 2019-09-03 CN CN201921451669.7U patent/CN210775478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588920A (en) * | 2021-07-22 | 2021-11-02 | 北京安赛博技术有限公司 | Method, system, equipment and medium for identifying and monitoring soil freezing and thawing process |
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