CN218956580U

CN218956580U - Ice-rock debris side slope model experiment system under freeze thawing cyclic action

Info

Publication number: CN218956580U
Application number: CN202222794666.1U
Authority: CN
Inventors: 邱恩喜; 潘宏宇; 肖飞知; 彭撞; 杜宪武; 舒中文; 孙希望; 邵永波; 张蕊; 聂文峰; 万旭升; 渠孟飞; 路建国; 甯尤军; 杨婷婷; 刘君; 郑贺斌; 赵岑; 程云建; 晏忠瑞
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2022-10-23
Filing date: 2022-10-23
Publication date: 2023-05-02
Anticipated expiration: 2032-10-23

Abstract

The application provides an ice-rock debris side slope model experiment system under the action of freeze thawing circulation. The device comprises a temperature control module, a main body test box module and a water supply module. The temperature control module consists of a refrigerating device, a heating device and a gas transmission pipeline; the main body test module consists of an adjustable support panel, a universal joint, a temperature measuring meter, a pressure dial indicator, a strain gauge, a moisture sensor, a rainwater receiving box, a pipeline, a valve and an exhaust device, wherein one side of the box body is vacuum interlayer heat-insulating glass; the water supply module consists of a water supply tank, a water pump, a water delivery pipeline and a sprinkler. The temperature control module can simulate temperature change; the main body test box module can simulate slopes with different slope ratios, monitor the water content and monitor the stress strain; the water supply module simulates the rainfall process. The utility model establishes an evaluation mechanism of side slope damage under freeze thawing cycle, and has the advantages of convenient test, improved test speed, simulation of various soil body damage and repeated use.

Description

Ice-rock debris side slope model experiment system under freeze thawing cyclic action

Technical Field

The application relates to the field of indoor freeze-thawing cycle tests, in particular to an ice-rock debris side slope model experiment system under the action of freeze-thawing cycle.

Background

The climate of China is various, and the conditions of large seasonal temperature difference and large day-and-night temperature difference exist in partial areas, so that construction activities are carried out in the areas, and side slopes are possibly unstable, slump and the like due to long-term influence of freeze thawing cycles. The side slope damage has great influence on engineering construction activities and safety of building facilities, so that analysis and evaluation on the side slope damage condition under the freeze thawing cycle are needed. However, the existing test device can only measure the mechanical property of a single soil block under the freeze thawing cycle, or can only singly simulate the property of a certain aspect of a side slope, the damage of the side slope cannot be intuitively simulated, and a large-scale field test cannot be developed due to the influence of natural condition factors such as terrain, weather and the like, so that the ice-rock debris side slope model test system under the action of the freeze thawing cycle is invented in order to simulate the damage condition of the side slope under the freeze thawing cycle and the change condition of the mechanical property of a soil body indoors.

Disclosure of Invention

In order to solve the problems, an ice-rock detritus side slope model experiment system under the action of freeze thawing cycle is designed, and the instrument can measure the damage form of the side slope under the freeze thawing cycle and the change condition of soil mass. The method can effectively improve test conditions, improve test efficiency and accuracy, is suitable for various soil bodies, and greatly improves the use of the experimental instrument.

The application provides an ice-rock debris side slope model experiment system under freeze thawing cycle effect, include: the device comprises a test box 1, an adjustable support panel 2, a universal support frame 3, a thermometer I4, a pressure dial gauge 5, a strain gauge 6, a moisture sensor 7, a refrigerating system 8, a condenser 9, a heating system 10, a heating device 11, a sprinkling device 12, a water supply tank 13, a water pump 14, a rainwater receiving tank 15, a pipeline I16, a pipeline II 17, a pipeline III 18, a pipeline IV 19, a pipeline V20, a pipeline VI 21, a valve I22, a valve II 23, a valve III 24, a valve IV 25, a valve V26, a thermometer II 27, an electronic display screen 28, an external camera 29, a fan box 30 and an air draft device 31.

The experimental box 1, the adjustable support panel 2, the universal support frame 3, the first thermometer 4, the pressure dial indicator 5, the strain gauge 6, the moisture sensor 7, the rainwater receiver 15, the second pipeline 17, the second thermometer 27, the second valve 23, the third valve 24, the second thermometer 27, the electronic display screen 28, the external camera 29, the fan box 30 and the air draft device 31 form a slope freeze-thawing cycle main body experimental box.

The refrigerating device 8, the condenser 9, the heating device 10, the heating device 11, the valve I22 and the pipeline I16 form a temperature control module; the water supply module is composed of the water sprinkling device 12, the water supply tank 13, the water pump 14, the pipeline IV 19, the pipeline V20, the pipeline VI 21, the valve IV 25 and the valve V26.

Preferably, the pressure dial indicator 5 is freely adjusted in angle and length according to the angle of slope stacking.

Preferably, the first thermometer 4 can measure the temperature in the box.

Preferably, the universal support frame 3 can be arbitrarily adjusted to adjust the angle of the adjustable support panel.

Preferably, the temperature measuring meter 4 can monitor the temperature change condition in the box body in time.

Preferably, the pressure dial indicator 5 can randomly adjust the self height and the inclination angle according to the angle of the slope pile. Preferably, the strain gauge is placed in the soil body and connected with a computer on the box body by a wire.

The preferred pump 13 can control the pumping rate as required by the test.

THE ADVANTAGES OF THE PRESENT INVENTION

1. The indoor simulation test mode is adopted to simulate the damage of the side slope under the freeze thawing cycle and the like, so that the influence of factors such as weather, seasons and the like on the field test can be overcome.

2. By adopting the controllable temperature device, the side slope condition of freeze thawing cycle at different temperatures can be simulated, the test speed is accelerated, and the diversity of test parameters is realized

3. The rainfall process can be simulated by adopting a water sprinkling mode, and the damage condition of the side slope under the rainfall condition can be simulated by combining the freeze thawing circulating device.

4. The strain gauge is placed in the soil body, and the moisture sensor can timely monitor the stress-strain condition of the soil body during damage and monitor the moisture content, so that the actual damage condition of the field can be analyzed.

Drawings

FIG. 1 is a three-dimensional elevation view of a freeze-thaw cycle system.

Fig. 2 is a three-dimensional side view of a freeze-thaw cycle system.

FIG. 3 is a two-dimensional cross-sectional elevation view of a freeze-thaw cycle.

Fig. 4 is a two-dimensional side view of a freeze-thaw cycle system.

FIG. 5 is a two-dimensional top view of a freeze-thaw cycle system.

In the description of the present utility model, the terms "left", "middle", "one" and "the indicated azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present design and do not require that the present design must be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present design. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.

As shown, the reference numerals: the device comprises a test box 1, an adjustable support panel 2, a universal joint 3, a thermometer I4, a pressure dial gauge 5, a strain gauge 6, a moisture sensor 7, a refrigerating system 8, a condenser 9, a heating system 10, a heating device 11, a watering system 12, a water supply tank 13, a water pump 14, a rainwater receiving box 15, a pipeline I16, a pipeline II 17, a pipeline III 18, a pipeline IV 19, a pipeline V20, a pipeline VI 21, a valve I22, a valve II 23, a valve III 24, a valve IV 25, a valve V26, a thermometer II 27, an electronic display screen 28 and an external camera 29.

As shown in fig. 1: the left side is a temperature control module, and a refrigerating system 8, a condenser 9, a heating system 10, a heating device 11, a first pipeline 16 and a first valve 22 are arranged in the box body.

As shown in fig. 1: the middle is a main body test box module, the test box 1, an adjustable support panel 2, a universal joint 3, a first thermometer 4, a pressure dial indicator 5, a strain gauge 6, a moisture sensor 7, a second pipeline 17, a rainwater collecting box 15, a third pipeline 18, a second thermometer 27, an electronic display screen 28, an external camera 29, a fan box 30 and an exhaust device 31 are arranged in the box.

As shown in fig. 2: the system comprises a water sprinkling system 12, a water supply tank 13, a water pump 14, a pipeline four 19, a pipeline five 20, a pipeline six 21, a valve four 25 and a valve five 26.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description.

The utility model provides a design scheme that: an ice-rock debris side slope model experiment system under the action of freeze thawing circulation. An experimental system of an ice-rock debris side slope model under the action of a freeze thawing cycle is described with reference to the accompanying drawings: the main body test box module, the temperature control module and the water supply module. The main body test box module comprises: the device comprises a test box 1, an adjustable support panel 2, a universal support frame 3, a first thermometer 4, a pressure dial gauge 5, a strain gauge 6, a moisture sensor 7, a second pipeline 17, a second valve 23, a third pipeline 18, a third valve 24, a rainwater receiving box 15, a second thermometer 27, an electronic display screen 28, an external camera 29, a fan box 30 and an exhaust device 31. The universal support frame 3 can be rotated at any angle and lifted or lowered in height, so that an adjustable support panel can be adjusted, and the inclination angle of the panel can be adjusted to an angle required by a test; the pressure dial indicator 5 can adjust the height and the angle of the slope according to the pile height and the inclination angle of the slope and measure the pressure value; the strain gauge 6 and the moisture sensor 7 are connected to an electronic display screen 28 on the box body through wires, and the stress-strain relation and the moisture content can be obtained on the electronic display screen 28 in the test process. The first thermometer 4 is arranged on one side of the box body and is arranged up and down, so that the temperature conditions of different positions of the test box 1 can be measured, the second thermometer 27 is arranged on the second pipeline 17, and the temperature of gas transmitted into the test box can be monitored. The external camera 29 is placed on one side of the test box, which adopts vacuum interlayer heat-insulating glass, and can clearly record the damage condition of the inner side slope of the test box. The rainwater receiving box 15 is arranged on one side of the test box 1, and the bottom of the test box 1 is connected with a pipeline III 18 to drain the redundant water in the box body out of the rainwater receiver. The air draft device 31 is placed in the fan case 30, and adopts a mode that the pipelines at the left side and the right side are respectively arranged and adopts an air draft direction opposite to each other.

The temperature control module includes: a refrigerating device 8, a condenser 9, a heating device 10, a heating device 11, a first pipeline 16 and a first valve 22. The refrigerating device 8 refrigerates the gas through the condenser 9 and conveys the cold gas into the test box 1 through the first pipeline 16, and the heating device 10 heats the gas through the heating device 11 and conveys the hot gas into the test box 1 through the first pipeline 16. The first valve 22 on the side of the heating device is used for closing the pipeline 16 on the side of the heating device to isolate hot gas, and the first valve 22 on the side of the refrigerating device 8 is used for closing the pipeline 16 on the side of the refrigerating device to isolate cold gas when the temperature is reduced. The cold air and the hot air are sent into the test box 1 through an exhaust device arranged in a pipeline II 17 on one side of the test box 1, the air in the test box 1 is pumped back by a pipeline II 17 on the other side, and the process is repeated to form air circulation transmission, so that a freezing and thawing circulation phenomenon is generated.

The water supply module includes: the sprinkler 12, the water supply tank 13, the water pump 14, the valve four 25, the valve five 26, the pipeline four 19, the pipeline five 20 and the pipeline six 21. The sprinkler is characterized in that a pipeline IV 19 is arranged in the top cover of the external test box 1, the pipeline IV 19 is transversely arranged, the condition that the opening angle is too small due to the limitation of the pipeline when the box cover is opened can be avoided, the pipeline IV 20 is a detachable pipeline, and the pipeline IV 20 can be externally connected with a hose to form a pipeline VI 21; the water pump 14 can adjust the water pumping rate, pump the water in the water supply tank 13, and transmit the water to the sprinkler 12 through the pipeline five 21, the pipeline five 20 and the pipeline four 19. The sprinkler 12 can adjust the precipitation rate and the water quantity of each group of sprinklers by the valve four 25, and the overall pumping rate and the water quantity can be controlled by the valve 26.

The test process is that firstly, the adjustable support panel 2 and the universal joint 3 are adjusted to the angle required by the test in the test box 1, and then the side slope is piled up and compacted. Meanwhile, the strain gauge 6 and the moisture sensor 7 are placed in soil, wires are connected to the electronic display screen 28, the pressure dial indicator 5 adjusts positions and angles according to the slope inclination angle, and finally the box body is covered. Secondly, cold air firstly enters the test box 1 through the first pipeline 15 and the second pipeline 16 by the temperature control device, after the temperature reaches the required temperature, the temperature is controlled for a period of time to enable soil moisture to freeze and expand for enough time, then the valve I22 of the refrigerating device 8 is closed, hot air is then transmitted into the box body through the first pipeline 15 and the second pipeline 16, after the temperature reaches the required temperature, the temperature is controlled for a period of time to enable ice in the soil to melt for enough time, and the process is circulated according to the freezing and thawing times so as to achieve the purpose of simulating freezing and thawing cycle. During the rainfall simulation process, the water pump 13 pumps out the water in the water supply tank 12 and enters the sprinkler system through the pipeline six 21, the pipeline five 20 and the pipeline four 19 to perform rainfall simulation. The soil body in the test box 1 is damaged or changed under the effects of freeze thawing cycle and rainfall simulation, the stress-strain state and the water content condition of the soil body are measured by the strain gauge 6, the moisture sensor 7 and the pressure dial indicator 5 in the soil body, and the change condition of the soil body surface is recorded by the peripheral camera 29.

The technical scheme provided by the application is described in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. Modifications and improvements to the present application may occur to those of ordinary skill in the art, and are intended to be included within the scope of the appended claims.

Claims

1. An ice-rock debris side slope model experiment system under the action of freeze thawing circulation is characterized in that: the system comprises a temperature control module, a water supply module and a main body test box module, wherein the three contents form a freeze thawing cycle slope model test system; the temperature control module consists of a refrigerating device, a condenser, a heating device, a pipeline and a valve; the water supply module consists of a water supply tank, a water pump, a water sprinkling device, a pipeline and a valve; the main body test box consists of a box body, an adjustable support panel, a universal joint, a temperature measuring meter, a pressure dial indicator, a strain gauge, a moisture sensor, a refrigerating system, a condenser, a heating system, a heating device, a sprinkling device, a water supply box, a water pump, a rainwater receiving box, a pipeline, a valve, an electronic display screen, an external camera, a fan box and an air draft device.

2. The ice-rock fragment side slope model experiment system under the action of freeze-thawing cycle according to claim 1, wherein: cold air is generated by a condenser in a refrigerating device in the temperature control module, hot air is generated by a temperature rising device in the heating device, and the air is introduced into the box body through respective pipelines to simulate the temperature change condition.

3. The ice-rock fragment side slope model experiment system under the action of freeze-thawing cycle according to claim 1, wherein: the water supply module controls water flow transmission, pumps water by a water pump, enters the pipeline in the top cover of the main body test box along the pipeline and simulates the rainfall process by the sprinkler; wherein the valve can control the water quantity.

4. The ice-rock fragment side slope model experiment system under the action of freeze-thawing cycle according to claim 1, wherein: the soil body is piled on an adjustable support panel in a main body test box module, the angle required by the test is adjusted by a universal joint, and the freeze thawing cycle is simulated in the test box through the rainfall simulation process and the cold air and hot air transmission; the temperature in the box body is measured by an external temperature measuring meter, the stress-strain condition and the change of water content of the soil body are measured by a pressure dial indicator, a strain gauge and a water sensor, and finally the change condition of the soil body is obtained by an external camera through vacuum interlayer heat insulation glass.