CN201724917U - Device for measuring thermal conductivity of soil body of earthen site - Google Patents
Device for measuring thermal conductivity of soil body of earthen site Download PDFInfo
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- CN201724917U CN201724917U CN2010202005666U CN201020200566U CN201724917U CN 201724917 U CN201724917 U CN 201724917U CN 2010202005666 U CN2010202005666 U CN 2010202005666U CN 201020200566 U CN201020200566 U CN 201020200566U CN 201724917 U CN201724917 U CN 201724917U
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- soil body
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- thin plate
- earthen site
- soil
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Abstract
The utility model discloses a device for measuring the thermal conductivity of the soil body of an earthen site. The device includes a heat source, a fire-proof thin plate, a sample box, an earthen site soil body, a thermocouple and a data acquisition instrument, wherein the fire-proof thin plate is placed on the heat source, the sample box is placed on the fire-proof thin plate and filled with the soil body, the thermocouple is inserted into the soil body and connected with the data acquisition instrument through a conducting wire, and the data acquisition instrument is connected with a computer through a conducting wire. The utility model has the advantages of high accuracy and strong repeatability in measuring the thermal conductivity of the soil body of the earthen site, and provides a novel technological mean for researching the weathering mechanism of the soil body of the earthen site and reinforcing the soil body of the earthen site.
Description
Technical field
The present invention relates to protection field, native ruins, concretely, is the device that a kind of native ruins soil body pyroconductivity is measured.
Background technology
The Xinjiang in NORTHWEST CHINA area, Gansu, Ningxia and Shaanxi are domestic, under the remnants many ancient times earth construction site, as the half way up the mountain village in the suburbs, Xi'an, Shaanxi and the human living ruins, the earth gulf of Qinan County, Gansu, the Jiao He ancient city of Xinjiang Turfan Prefecture, ruins such as the ancient city, cynomorium songaricum city in Anxi, Gansu county; Western Xia Imperial Mausoleum soil ruins or the like.These earth construction site history are remote, and what have is listed in world cultural heritage, and very high archaeology and historical value are arranged, but, over the past thousands of years, serious wind erosion and concentrated heavy showers erosion damage, the large quantities of weathering of native ruins, large tracts of land are caved in, and are just suffering destructive destruction.Study the disease and the origin cause of formation in native ruins, rescuing protection targetedly is very urgent a, very difficult task.
The most native ruins of China are located in northwest arid area, and day and night temperature is big here, and the Jiao He ancient city highest temperature and the lowest temperature that for example are located in Turfan, Xinjiang differ 21.9 ℃, and the ground day and night temperature reaches 44.5 ℃.Soil ruins actual measurement metope maximum temperature in summer can reach 60 ℃.The acute variation of the temperature difference can produce huge thermal stress effects between soil body granule interior and particle, the inside soil body structure will be destroyed, and prolonged and repeated like this difference variation can make the structure of the soil body constantly loose.
Temperature effect is as a key factor of the native ruins of influence causes of disease, and pyroconductivity is the important thermal physical property parameter of the reflection material capacity of heat transmission.Therefore, diffusion and the propagation law of heat energy in the soil body medium of native ruins is a problem that is worth further investigation.
Summary of the invention
In view of above-mentioned, the utility model purpose provides a kind of device of measuring native ruins soil body pyroconductivity, in the hope of being used to study the weathering mechanism of the native ruins soil body and the check of consolidation effect.
The purpose of this utility model is to realize by following technological means:
A kind of device of measuring native ruins soil body pyroconductivity is made up of thermal source, fire-resistant thin plate, sample box, the native ruins soil body, thermopair, data collecting instrument.Fire-resistant thin plate places on the thermal source, places sample box on fire-resistant thin plate, and sample box is inserted the soil body, inserts thermopair in the soil body, and thermopair is connected with data collecting instrument by lead, and data collecting instrument is connected with computer by lead.
Above-mentioned thermal source is in order to produce the thermal source of heat, it is a laboratory electromagnetic heating furnace, the power supply of this heating furnace by the set point deviation less than gamut ± 1.0% thermostat control, the temperature-sensing probe of thermostat links to each other with thermostat by high temperature resistant wire, is placed on to heat in the furnace chamber.
Above-mentioned fire-resistant thin plate makes the uniform fire-resistant thin plate of soil sample temperature to be measured for being used to, and its specification is: 4cm * 4cm * 0.1cm (length * wide * thickness) has good anti-flammability.
Above-mentioned sample box is the sample box that thermal insulation material is made, and its outer wall is made by the thermal insulation material of thick 0.2cm, has got rid of ambient temperature admirably to the testing sample Temperature Influence, has also guaranteed its one dimension heat transfer process in heating process.
The above-mentioned soil body pulverizes for the on-the-spot disturbed soil of taking, be the testing sieve sieve of 2mm through diameter after, add water then to mix and stir, be mixed with even wet soil, in the sample box of more even wet soil being packed into.
Described thermopair is that diameter is the K type thermopair of 0.1mm, is used to measure the temperature of the default measuring point of testing sample.
Above-mentioned datalogger, be one can with the joining datalogger of PC, be used for gathering the temperature change value of testing sample in heating process measuring point (three presets: 2.5cm place, 5.0cm place, 7.5cm place).
The beneficial effect of advantage of the present utility model and generation is:
The utility model is simple in structure, easy to operate, be a kind of can be fast, the device of the native ruins of reliable determination soil body pyroconductivity, this device has been replenished the native ruins soil body and the blank of the pyroconductivity research of the soil body after reinforcing, for the weathering mechanism of studying the native ruins soil body and the check that adds Zhou Xiaoguo provide a kind of new technological means.
Description of drawings
Fig. 1 is a synoptic diagram of the present utility model;
Embodiment
Below in conjunction with the drawings and the specific embodiments the utility model is described in further detail again:
Embodiment
The disturbed soil that the scene is taked pulverizes, be the testing sieve sieve of 2mm through diameter after, add 10% water then and mix and stir, be mixed with even wet soil, in the sample box 3 of more even wet soil being packed into, by compacted density 1.35～1.40g/em
3Be prepared into testing sample.Prepare 4 of such testing samples, wherein 3 testing samples are 3.81 with modulus respectively, and concentration is respectively 5%, 10%, and 15% 3 kind of PS reinforces its bottom, and another one test sample product are left intact.4 testing samples are put into baking oven through the 24h oven dry, take out, keeping leaving standstill 24h under the certain condition of room temperature.Implementation step is as follows:
(1) keep under the certain condition of room temperature fire-resistant thin plate 2 being placed on the heating furnace 1, open heating furnace 1, evenly preheating 5min reaches unanimity heating furnace 1, fire-resistant thin plate 2 and ambient temperature;
(2) with thermopair 5 difference insertion depth 2.5cm, 5.0cm, 7.5cm are inserted in the soil body 4, fix, and with the vaseline good seal of the slit between the lead and the soil body.Temperature variation on the while observed data registering instrument display screen.
(3) behind the temperature stabilization on pending data Acquisition Instrument 6 display screens, testing sample is placed on heat-resisting thin plate 2 centre positions, presses record data simultaneously.Temperature-time interval delta T=30s writes down 20 groups of temperature datas.Temperature data substitution formula with collection:
Can obtain the pyroconductivity of this soil ruins soil body.
In the formula: k is a soil body pyroconductivity; C is the volume specific heat of the soil body; Δ x is the distance between adjacent two presets of earth sample; Δ t is the time interval of collecting temperature value; T
I, jThe expression node.Can obtain the pyroconductivity of this soil ruins soil body.
Claims (1)
1. device of measuring native ruins soil body pyroconductivity, form by thermal source (1), fire-resistant thin plate (2), sample box (3), the native ruins soil bodys (4), thermopair (5), data collecting instrument (6), it is characterized in that fire-resistant thin plate (2) places on the thermal source (1), go up placement sample box (3) at fire-resistant thin plate (2), sample box (3) is inserted the soil body (4), insert thermopair (5) in the soil body (4), thermopair (5) is connected with data collecting instrument (6) by lead, and data collecting instrument (6) is connected with computer (7) by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202005666U CN201724917U (en) | 2010-05-21 | 2010-05-21 | Device for measuring thermal conductivity of soil body of earthen site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202005666U CN201724917U (en) | 2010-05-21 | 2010-05-21 | Device for measuring thermal conductivity of soil body of earthen site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724917U true CN201724917U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202005666U Expired - Lifetime CN201724917U (en) | 2010-05-21 | 2010-05-21 | Device for measuring thermal conductivity of soil body of earthen site |
Country Status (1)
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|---|---|
| CN (1) | CN201724917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907227A (en) * | 2017-11-10 | 2018-04-13 | 敦煌研究院 | A kind of earthen ruins surface and the measuring method of internal temperature change |
-
2010
- 2010-05-21 CN CN2010202005666U patent/CN201724917U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907227A (en) * | 2017-11-10 | 2018-04-13 | 敦煌研究院 | A kind of earthen ruins surface and the measuring method of internal temperature change |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
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| CX01 | Expiry of patent term |