CN210514144U - Testing arrangement of soil body-structure interface heating to soil body temperature influence - Google Patents
Testing arrangement of soil body-structure interface heating to soil body temperature influence Download PDFInfo
- Publication number
- CN210514144U CN210514144U CN201920754506.XU CN201920754506U CN210514144U CN 210514144 U CN210514144 U CN 210514144U CN 201920754506 U CN201920754506 U CN 201920754506U CN 210514144 U CN210514144 U CN 210514144U
- Authority
- CN
- China
- Prior art keywords
- soil
- heating
- soil body
- temperature
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a testing device for the influence of soil body-structure interface heating on the temperature of a soil body; the device comprises a heating system and a testing system; the heating system consists of a heating lamp, a metal bottom plate, a surface-mounted temperature sensor, an upper cover plate, a heat absorption layer, a side wall, a ceramic lamp holder and screws; the test system consists of a soil box, a soil temperature sensor and soil; the utility model can test the rule of the influence of the heating of the soil-structure contact interface on the temperature of the surrounding soil body; the device can be used for simulating the influence of local soil body temperature rise and accelerated soil body hard cake formation on the surface of the cutter head caused by friction or system water circulation heat transfer of the metal cutter head in the tunneling process of the shield tunneling machine, and provides a test means for solving the problem of quantitative determination of soil body heating hardening rules caused by soil body-structure interface temperature rise.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering model test, especially, relate to a testing arrangement of contact interface heating of geotechnical model soil to surrounding soil body temperature influence.
Background
The mud cake formed by the cutter head of the shield is an engineering problem commonly encountered in the construction of clay-containing stratum by the shield.
The mud cake formed by the shield cutter is a phenomenon that muck fragments cut by the cutter are retained between the cutter and a shield excavation surface, form solid or semisolid blocks under the extrusion action of the cutter and adhere to and block the cutter. When the shield cutter head is used for forming mud cakes, cutters on the cutter head can be gradually stuck by the solidified clay, so that the penetration degree of the cutters is reduced when stratum is cut, and the shield excavation efficiency is reduced.
If the mud cake of the cutter head of the shield is not properly treated and the shield is driven to continue to advance, the mud cake of the cutter head is pressed more and more densely and is solidified into rock, so that the thrust of a propulsion oil cylinder is greatly increased, the driving torque of the cutter head is maintained at a critical high position, and the temperature of the central body of the cutter head is increased rapidly and even reaches a high temperature.
The temperature of the soil body around the cutting surface of the cutter head is increased due to the overhigh temperature of the central body of the cutter head, so that the moisture of the soil body around the cutting surface of the cutter head is transferred, the soil is hardened, the mud cake formation phenomenon on the cutter head is further aggravated, the penetration degree of the cutter head is greatly reduced, the tunneling speed is reduced, the production period is seriously limited, and the safety of equipment is greatly threatened.
And when the shield machine is in normal tunneling, the internal hydraulic system, the main driving part, the electrical components in the power distribution cabinet and the like often generate a large amount of heat, so that the environmental temperature of equipment such as a motor and a pump and the like and in a tunnel is increased. Therefore, in the operation process of the shield machine, the heat of the heating part is usually conveyed out of the shield machine by adopting a circulating water system, and the heat conduction of the water circulation of the system can also generate certain influence on the local temperature of the soil body.
Therefore study soil body-structure interface heating is to the influence of soil body temperature, and it is necessary to know the influence of soil body local interface intensification to soil body temperature on every side, consequently the utility model provides a model testing arrangement can heat the local soil body of contact interface to can observe the temperature development condition of the interior soil body of temperature influence scope, provide the reference for the blade disc centrum body friction intensification condition among the actual engineering.
SUMMERY OF THE UTILITY MODEL
For shield structure cutter head caking mud cake cause the condition of cutter head central body intensification to the influence of soil body temperature around the cutting surface among the research engineering, the utility model provides a testing arrangement of model test soil body-structure interface heating to soil body temperature influence.
The utility model adopts the technical proposal that:
a testing device for the influence of soil body-structure interface heating on the soil body temperature comprises a heating system and a testing system; the heating system consists of a heating lamp, a metal bottom plate, a surface-mounted temperature sensor, an upper cover plate, a heat absorption layer, a side wall, a ceramic lamp holder and screws; the test system consists of a soil box, a soil temperature sensor and soil;
the heating system comprises a main body and a heating system, wherein the main body consists of a heating lamp, a surface mount type temperature sensor and a metal bottom plate, the heating lamp is fixed in the middle of the lower end surface of an upper cover plate through a ceramic lamp holder, and the upper cover plate is connected with the side wall through a screw; the heating lamp can adjust the heating power thereof through an external controller; the side wall is made of a thermal insulation material with poor heat conduction performance and can be one of a cylinder or a prism, and the side wall is connected with the metal bottom plate through screws; the metal bottom plate is made of thin-wall metal materials with good heat conduction performance, the upper surface of the metal bottom plate is provided with a dark color heat absorption layer, and the metal bottom plate is provided with a plurality of patch type temperature sensors.
The testing system main body consists of a soil box, soil and soil temperature sensors, test soil is filled in the soil box, and a plurality of soil temperature sensors are buried at preset positions in the soil; the patch type temperature sensors are symmetrically distributed around a metal bottom plate of the heating system, and the specific arrangement mode and the spacing are determined according to the test requirements;
the heating system is directly contacted with soil in the test system through the side wall and the metal bottom plate and is buried in the soil body to a certain depth; the patch type temperature sensor in the heating system and the soil temperature sensor in the testing system are connected with an external data acquisition device through data lines; and the parameters of the soil such as type, water content, compactness and the like are determined according to the test requirements.
Advantageous effects
The utility model can test the rule of the influence of the heating of the soil-structure contact interface on the temperature of the surrounding soil body; the device can be used for simulating the influence of local soil body temperature rise and accelerated soil body hard cake formation on the surface of the cutter head caused by friction or system water circulation heat transfer of the metal cutter head in the tunneling process of the shield tunneling machine, and provides a test means for solving the problem of quantitative determination of soil body heating hardening rules caused by soil body-structure interface temperature rise.
Description of the drawings:
fig. 1 is a front view of a device for testing the influence of soil body-structure interface heating on soil body temperature provided by the utility model;
fig. 2 is a top perspective view of the device for testing the effect of soil body-structure interface heating on soil body temperature provided by the present invention;
FIG. 3 is an enlarged view of the metal base plate of FIG. 1 and its attachment portions;
in the attached figures 1, 2 and 3
1 is a heating system comprising: 1-1 heating a lamp; 1-2 metal base plates; 1-3 a surface mount type temperature sensor; 1-4, an upper cover plate; 1-5 heat absorbing layers; 1-6 side walls; 1-7 screws; 1-8 ceramic lamp holders.
2 is a test system, comprising: 2-1, a soil box; 2-2 soil temperature sensor; 2-3 of soil.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
as shown in fig. 1, 2 and 3, the testing device and the testing method for the influence of soil body-structure interface heating on the soil body temperature are characterized in that: the device is composed of a heating system 1 and a testing system 2; the heating system 1 consists of 1-1 heating lamps; 1-2 metal base plates; 1-3 a surface mount type temperature sensor; 1-4, an upper cover plate; 1-5 heat absorbing layers; 1-6 side walls; 1-7 screws and 1-8 ceramic lamp holders; the testing system 2 is composed of a soil box 2-1, a soil temperature sensor 2-2 and soil 2-3.
The edge part of the upper cover plate 1-4 is uniformly drilled with screw holes at every 90 degrees of the central point for fastening the inserted screws 1-7, the edge part of the upper cover plate is drilled with an air hole to prevent overlarge internal and external pressure difference caused by heating in the cover, the central position of the lower end surface of the upper cover plate is fixed with a ceramic lamp holder 1-8 through the screws 1-7, and the lamp holder is connected with a heating lamp 1-1; the upper cover plate 1-4 is fixed with the side wall 1-6 through a screw 1-7; the heating power of the heating lamp 1-1 can be adjusted according to the test requirements through the numerical feedback of the surface mount type temperature sensor 1-3; the upper edge of the inner wall of the side wall 1-6 is provided with a picking part corresponding to the lower part of the screw hole of the upper cover plate 1-4 and used for arranging the upper cover plate 1-4 on the upper part, and the picking part is drilled with a hole and processed with a thread for screwing the screw 1-7 of the upper cover plate 1-4; the outer wall of the side wall 1-6 and the metal bottom plate 1-2 are buried in the soil 2-3 for a certain depth; the side walls 1-6 are made of heat insulation materials with poor heat conduction performance, and can be in the shape of one of a cylinder or a prism; the upper surface of the metal bottom plate 1-2 is provided with a deep color heat absorption layer 1-5, and the coating can be formed by electroplating or uniformly spraying deep color paint, so that the heat radiated by the heating lamp 1-1 can be well absorbed; the upper surface of the metal bottom plate 1-2 is provided with a plurality of grooves with the size slightly larger than that of the patch type temperature sensor 1-3, the sensor is clamped in the groove and fixed by high temperature resistant glue, the patch type temperature sensor 1-3 is connected with an external data collector and can collect the heating temperature of the metal cover in real time, and the heating power of the heating lamp 551-1 is adjusted according to the test requirement to adjust the heating temperature of the metal bottom plate 1-2 to the soil 2-3 outside the cover.
The soil box 2-1 is formed by plastic injection molding or metal plate welding, and soil 2-3 is filled in the box in layers and compacted; the soil type, the water content compactness and other parameters of the soil 2-3 are determined according to test requirements; a plurality of soil temperature sensors 2-2 are buried at preset positions in the soil 2-3, the soil temperature sensors 2-2 are symmetrically distributed around the metal bottom plate 1-2 to form a ring, and the specific arrangement mode and the arrangement interval are determined according to specific test requirements.
The patch type temperature sensors 1-3 and the soil temperature sensors 2-2 are connected with an external data acquisition device through data lines, and the temperature conditions of soil at the arrangement positions of the sensors in the soil 2-3 can be obtained.
The working process of the utility model is as follows:
step 1: according to the requirements of a test soil layer, filling 2-3 layers of soil into a soil box 2-1; in the process of filling soil, burying the soil temperature sensor 2-2 into the soil 2-3 according to a position preset by a test; when the height of the soil reaches the preset embedding depth of the heating system 1, placing the heating system 1 on the surface of the soil layer; continuing to fill soil 2-3 around the side walls 1-6 to a final height;
step 2: weights with preset mass are placed on the upper cover plate 1-4, so that the metal bottom plate 1-2 can apply constant pressure to the soil 2-3 and keep the pressure for a certain time; the mass of the weight and the time for keeping the pressure can be adjusted according to the test requirements;
and step 3: connecting the surface mount type temperature sensor 1-3 and the soil temperature sensor 2-2, and opening the data acquisition device to acquire temperature data;
and 4, step 4: setting the heating power of a heating lamp 1-1, turning on the heating lamp 1-1, measuring the temperature of a metal bottom plate 1-2 through a surface mount type temperature sensor 1-3, and measuring the temperature of a sensor embedding position in soil through a soil temperature sensor 2-2;
and 5: adjusting the heating power of the heating lamp 1-1, changing parameters such as the type, the water content and the compactness of the soil 2-3 according to test requirements, changing the mass of the weight and the time for keeping the pressure, repeating the steps 1-4, and measuring the influence rule of the heating of the soil body-structure interface on the temperature change of each part of the soil body under different conditions.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.
Claims (3)
1. The utility model provides a testing arrangement of soil body-structure interface heating to soil body temperature influence which characterized in that: the device consists of a heating system (1) and a testing system (2);
the heating system (1) is composed of a heating lamp (1-1), a metal bottom plate (1-2), a patch type temperature sensor (1-3), an upper cover plate (1-4), a heat absorption layer (1-5), a side wall (1-6), a screw (1-7) and a ceramic lamp holder (1-8);
the testing system (2) is composed of a soil box (2-1), a soil temperature sensor (2-2) and soil (2-3).
2. The apparatus of claim 1, wherein the apparatus is further configured to test the effect of heating on soil temperature: in the heating system (1), an upper cover plate (1-4) is fixed with a side wall (1-6) through a screw (1-7), a ceramic lamp holder (1-8) is arranged at the lower part of the upper cover plate, and a heating lamp (1-1) is arranged on the lamp holder; the heating power of the heating lamp (1-1) can be adjusted; the heating system (1) is buried in the soil (2-3) to a certain depth;
the side wall (1-6) can be one of a cylinder or a prism and is made of a thermal insulation material, and the side wall (1-6) is connected with the metal bottom plate (1-2) through a screw (1-7);
the metal bottom plate (1-2) is made of thin-wall metal materials, the upper surface of the metal bottom plate is provided with a dark color heat absorption layer (1-5), and a plurality of patch type temperature sensors (1-3) are arranged.
3. The apparatus of claim 1, wherein the apparatus is further configured to test the effect of heating on soil temperature: in the part of the test system (2), soil (2-3) is filled in a soil box (2-1), a plurality of soil temperature sensors (2-2) are buried at preset positions in the soil (2-3), and the soil temperature sensors (2-2) are symmetrically distributed around a metal bottom plate (1-2) of the heating system (1);
the patch type temperature sensors (1-3) and the soil temperature sensors (2-2) are connected with an external data acquisition device through data lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920754506.XU CN210514144U (en) | 2019-05-22 | 2019-05-22 | Testing arrangement of soil body-structure interface heating to soil body temperature influence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920754506.XU CN210514144U (en) | 2019-05-22 | 2019-05-22 | Testing arrangement of soil body-structure interface heating to soil body temperature influence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210514144U true CN210514144U (en) | 2020-05-12 |
Family
ID=70576512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920754506.XU Expired - Fee Related CN210514144U (en) | 2019-05-22 | 2019-05-22 | Testing arrangement of soil body-structure interface heating to soil body temperature influence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210514144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057866A (en) * | 2019-05-22 | 2019-07-26 | 南京林业大学 | A kind of test device and test method that the soil body-structural interface heating influences soil temperature |
| CN112697838A (en) * | 2021-01-27 | 2021-04-23 | 山东理工大学 | Indoor soil fire simulation test device and test method thereof |
-
2019
- 2019-05-22 CN CN201920754506.XU patent/CN210514144U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057866A (en) * | 2019-05-22 | 2019-07-26 | 南京林业大学 | A kind of test device and test method that the soil body-structural interface heating influences soil temperature |
| CN112697838A (en) * | 2021-01-27 | 2021-04-23 | 山东理工大学 | Indoor soil fire simulation test device and test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210514144U (en) | Testing arrangement of soil body-structure interface heating to soil body temperature influence | |
| CN204877506U (en) | Indoor test device in han qu tunnel | |
| CN111238951B (en) | Rock test sample block stress field simulation device | |
| CN104142356B (en) | Salty-cold district canal for water conveyance freeze thawing distortion centrifuge modelling system | |
| CN105422088B (en) | Coal mine tunnel geological parameter on-line monitoring system | |
| CN105887604B (en) | A kind of operation roadbed disease disposal plant and processing method | |
| CN110057866A (en) | A kind of test device and test method that the soil body-structural interface heating influences soil temperature | |
| KR20190075903A (en) | Method and construction apparatus for soil processing | |
| CN111175469A (en) | Test method for crack expansion of high-temperature coal body under true three-dimensional stress caused by water injection and wetting | |
| CN104949851A (en) | Cutting propulsion simulation test system for quasi-rectangular shielding | |
| CA2253032A1 (en) | Anode installation apparatus and method | |
| CN113533096B (en) | Circulating pressure shear soil body frost heaving test system and method | |
| CN112903504B (en) | PDC tooth cutting rock breaking experimental device | |
| CN107905753A (en) | High-power ultrasound generator is placed in the blockage -removing and stimulation and device of underground | |
| CN111735843A (en) | Casing pipe type soil body one-dimensional hydrothermal migration testing device and testing method | |
| CN204903189U (en) | Cutting of class rectangular shield impels analogue test system | |
| CN1536341A (en) | Channeling measuring method and its device | |
| CN215332677U (en) | Core drill bit for rock core of cobble layer | |
| CN212753168U (en) | Walnut planting pit digging device with adjustable depth | |
| CN108221844B (en) | Dynamic response test device for near-sea foundation pit under effect of simulated tidal load | |
| CN111735724B (en) | Device and method for detecting creep stress of in-situ rock-soil body | |
| CN105806275B (en) | Device and method for monitoring continuous deformation of different areas of surrounding rock in real time | |
| CN208734283U (en) | The mud-scraping apparatus that cylinder for clearing up rotary drilling rig bores | |
| CN2646667Y (en) | An instrument for measuring scurry-proof ability of grout | |
| HU192381B (en) | Method for consolidating cohesionless soils of high water content for producing e.g. entries, headings and similars |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210522 |