A soil sample dry-wet cycle experimental device

Abstract

The present invention discloses a soil sample dry-wet cycle experimental device, which includes: a box body, which has a storage cavity, and the side wall of the box body is provided with a plurality of ventilation holes connected to the storage cavity; at least one group of circulation components, the circulation component includes a water supply part and an experimental box for storing soil ring knife samples, the experimental box is placed in the storage cavity, and the water supply part has an output end connected to the experimental box to supply water to the experimental box; a temperature control component, which has a heating end located in the storage cavity, and the heating end emits heat to adjust the temperature in the storage cavity. The temperature in the box body is adjusted by emitting heat by the heating end. After the fully infiltrated soil ring knife sample is dried at a certain temperature, water can be re-supplied to the experimental box to make the soil ring knife sample re-infiltrated. In this way, a soil ring knife sample that has undergone multiple dry-wet cycles at a certain temperature can be obtained. Thereby, the process of dry-wet cycle of soil layers under different ambient temperatures can be simulated.

Description

Technical Field

[0001] The invention relates to the field of soil layer characteristic experimental equipment, and in particular to a dry-wet cycle experimental device. Background Art

[0002] Shear failure of rock and soil is one of the important causes of geotechnical engineering disasters, so accurate determination of the shear strength parameters of rock and soil is of great significance in geotechnical engineering construction. Simulating the dry-wet cycle process of soil layers is an important experimental project for studying the physical properties of rock and soil, which is used to study the various physical properties of soil layers after dry-wet cycles.

[0003] The existing dry-wet cycle experimental device can be found in the patent application number CN202011393960.0. The dry-wet cycle characteristics of the soil layer can be simulated by injecting water into the soil ring knife sample to make the soil ring knife sample fully infiltrated, and then leaving the soil ring knife sample to dry. However, during the dry-wet cycle, the ambient temperature will affect the physical properties of the rock and soil. The existing soil dry-wet cycle experimental device cannot adjust the ambient temperature of the soil ring knife sample, and cannot simulate different ambient temperatures.

[0004] Therefore, how to simulate the soil drying and wetting cycle process under different ambient temperatures is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a dry-wet cycle experimental device to solve the technical problem that the prior art cannot simulate the dry-wet cycle process of soil layers under different ambient temperatures.

[0006] In order to achieve the above technical purpose, the technical solution of the present invention includes a soil sample dry-wet cycle experimental device, which includes:

[0007] A box body having a storage cavity therein, and a plurality of ventilation holes communicating with the storage cavity are opened on the side wall of the box body;

[0008] At least one set of circulation components, the circulation components including a water supply part and an experimental box for receiving a soil ring knife sample, the experimental box being placed in the receiving cavity, the water supply part having an output end connected to the experimental box to supply water to the experimental box;

[0009] The temperature control component has a heating end located in the storage cavity, and the heating end emits heat to adjust the temperature in the storage cavity.

[0010] Preferably, the circulation component further comprises a pressure member, wherein the pressure member has a pressing end for pressing the soil ring knife sample, and the pressure applied by the pressing end to the soil ring knife sample is adjustable.

[0011] Preferably, the test box is cylindrical, and the pressure piece includes a supporting part, a pressing part and a driving part. The supporting part is detachably mounted on one end of the test box, the pressing part is movably arranged on the other end of the test box, and the pressing end is located at the pressing part, and the driving part drives the pressing end to press the soil ring knife sample.

[0012] Preferably, the driving part includes a support seat, a rocker arm and a counterweight block, the support seat is installed on the box body, the middle part of the rocker arm is hinged to the support seat, the counterweight block is suspended at one end of the rocker arm, and the other end of the rocker arm presses against the pressing part.

[0013] Preferably, the water supply component comprises a water supply pump and a water supply pipe, one end of the water supply pipe is connected to the water supply pump, and the other end of the water supply pipe is connected to the experimental box.

[0014] Preferably, the water supply component further includes a drainage pump and a drainage pipe, one end of the drainage pipe is connected to the drainage pump, and the other end of the drainage pipe is connected to the experimental box.

[0015] Preferably, the water supply pipe is connected to the top end of the experimental box, and the drainage pipe is connected to the bottom end of the experimental box.

[0016] Preferably, the temperature control component includes a power supply module, a heating fan and a temperature sensor. The power supply module is electrically connected to the heating fan and the temperature sensor, respectively. The temperature sensor detects the temperature inside the storage cavity. When the temperature inside the storage cavity is higher than a preset temperature, the power supply module stops supplying power to the heating fan. When the temperature inside the storage cavity is lower than a preset temperature, the power supply module starts supplying power to the heating fan.

[0017] Preferably, the box is an acrylic box.

[0018] Preferably, the box body includes a box body and an opening and closing door, the box body has the storage cavity, and the box body is provided with a take-in and put-out port connecting the storage cavity and the outside, and the opening and closing door can be opened and closed on the box body to open or close the take-in and put-out port.

[0019] Compared with the prior art, the beneficial effects of the present invention include: first, the soil knife ring sample to be tested is placed in the experimental box, and then the water supply part can be used to supply water to the experimental box, so that the soil knife ring sample can be fully infiltrated. Then the water supply part can be adjusted to stop supplying water to the experimental box. The temperature in the box is adjusted by emitting heat from the heating end. After the fully infiltrated soil knife ring sample is dried at a certain temperature, water can be re-supplied to the experimental box to re-infiltrate the soil knife ring sample. In this way, a soil knife ring sample that has undergone multiple dry-wet cycles at a certain temperature can be obtained. Using the soil sample dry-wet cycle experimental device provided by the present invention, the temperature in the storage cavity can be adjusted, so that the process of dry-wet cycles of soil layers under different ambient temperatures can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a soil sample dry-wet cycle experimental device according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of a pressure-applying member according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of another pressure-applying member structure according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of another pressure-applying member according to an embodiment of the present invention;

[0024] Among them, the box body 100, the box body 110, the storage cavity 111, the ventilation hole 112, the opening and closing door 120, the circulation component 200, the water supply component 210, the water supply pump 211, the water supply pipe 212, the drainage pump 213, the drainage pipe 214, the experimental box 220, the pressure component 230, the supporting part 231, the pressing part 232, the driving part 233, the support seat 2331, the rocker arm 2332, the counterweight block 2333, the pressure cover 2334, the transmission frame 2335, the temperature control component 300, the power supply module 310, the heating fan 320, and the temperature sensor 330. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] See also Figures 1 to 4 The embodiment of the present invention provides a soil sample dry-wet cycle experimental device, which belongs to the field of soil layer characteristic experimental equipment, and is used to simulate the dry-wet cycle process of the soil layer, so as to study the physical properties of the soil layer after the dry-wet cycle. The soil sample dry-wet cycle experimental device can be used to simulate the dry-wet cycle process of the soil layer under different ambient temperatures.

[0027] In some preferred embodiments, the soil sample dry-wet cycle experimental device includes: a box 100, at least one set of circulation components 200 and a temperature control component 300. The box 100 has a storage chamber 111, and the side wall of the box 100 is provided with a plurality of ventilation holes 112 connecting the storage chamber 111 and the outside. The circulation component 200 includes a water supply part 210 and an experimental box 220 for storing soil ring knife samples. The experimental box 220 is placed in the storage chamber 111. The water supply part 210 has an output end connected to the experimental box 220 to supply water to the experimental box 220. The temperature control component 300 has a heating end located in the storage chamber 111, and the heating end emits heat to adjust the temperature in the storage chamber 111.

[0028] In the above embodiment, the soil knife ring sample to be tested is first placed in the experimental box 220, and then the water supply part 210 can be used to supply water to the experimental box 220 so that the soil knife ring sample can be fully infiltrated. The water supply part 210 can then be adjusted to stop supplying water to the experimental box 220. The temperature in the box 100 is adjusted by emitting heat from the heating end. After the fully infiltrated soil knife ring sample is dried at a certain temperature, water can be re-supplied to the experimental box 220 so that the soil knife ring sample is re-infiltrated. In this way, a soil knife ring sample that has undergone multiple dry-wet cycles at a certain temperature can be obtained. Using the soil sample dry-wet cycle experimental device provided by the present invention, the temperature in the storage chamber 111 can be adjusted, so that the process of dry-wet cycles of soil layers under different ambient temperatures can be simulated.

[0029] In a preferred embodiment, the box 100 includes a box body 110 and an opening and closing door 120. The box body 110 has a storage cavity 111, and the box body 110 is provided with a take-in and put-out port connecting the storage cavity 111 and the outside. The opening and closing door 120 can be installed on the box body 110 to open or close the take-in and put-out port. The operator can take out and put the soil ring knife sample in the storage cavity 111 after opening the take-in and put-out port.

[0030] In some preferred embodiments, the box 100 is an acrylic box. Acrylic is a transparent material, and the operator can observe the experimental object in the box 100 through the acrylic.

[0031] Any implementation of the water supply member 210 that can fill water into the test box 220 is feasible. In a specific embodiment, the water supply member 210 includes a water supply pump 211 and a water supply pipe 212. One end of the water supply pipe 212 is connected to the water supply pump 211, and the other end thereof is connected to the test box 220. By supplying water to the water supply pipe 212 through the water supply pump 211, water can be filled into the test box 220 to infiltrate the soil ring knife sample.

[0032] It can be understood that there can be multiple water supply pipes 212 in the same experimental box 220, and each water supply pipe 212 can extend into the experimental box 220 to different depths, so that water can be supplied to different depths of the experimental box 220 at the same time, so that various parts of the soil ring knife sample at different heights can receive the same degree of infiltration, avoiding the phenomenon of uneven infiltration of various parts of the soil ring knife sample.

[0033] In another embodiment, the water supply part 210 includes an automatic water replenisher, which includes a water storage bottle for storing water, a long tube and a short tube, both of which are connected to the water storage bottle and the experimental box 220, the long tube is used to supply water to the experimental box 220, and the short tube is used to balance the air pressure in the water storage bottle. In actual use, the end of the short tube needs to be higher than the soil ring knife sample. When the water in the experimental box 220 submerges the end of the short tube, the long tube stops supplying water, which can ensure that the soil ring knife sample is immersed after the water supply is stopped.

[0034] In a preferred embodiment, the water supply part 210 further includes a drainage pump 213 and a drainage pipe 214, one end of the drainage pipe 214 is connected to the drainage pump 213, and the other end thereof is connected to the experimental box 220. When the soil ring knife sample is completely infiltrated, the drainage pipe 214 can be used to extract the accumulated water in the experimental box 220 to avoid the accumulated water in the experimental box 220 affecting the final experimental results.

[0035] On the basis of the above embodiment, the water supply pipe 212 is connected to the top of the experimental box 220, and the drainage pipe 214 is connected to the bottom of the experimental box 220. The water supply pipe 212 is connected to the top of the experimental box 220 so that the soil ring knife sample can be fully infiltrated, and the drainage pipe 214 is connected to the bottom of the experimental box 220, which helps to completely drain the accumulated water in the experimental box 220.

[0036] In some preferred embodiments, the circulation component 200 further includes a pressure member 230, which has a pressing end for pressing the soil ring cutter sample, and the pressure applied by the pressing end to the soil ring cutter sample is adjustable.

[0037] In the above embodiment, the soil ring knife sample is pressed by the pressure member 230, and the pressure applied by the pressing end to the ring knife sample is adjustable, so as to simulate the dry-wet cycle characteristics of the soil layer under different pressure loads.

[0038] On the basis of the above embodiments, in a preferred embodiment, the test box 220 is cylindrical, and the pressure member 230 includes a supporting portion 231, a pressing portion 232 and a driving portion 233. The supporting portion 231 is detachably mounted on one end of the test box 220, the pressing portion 232 is movably arranged on the other end of the test box 220, and the pressing end is located at the pressing portion 232, and the driving portion 233 drives the pressing end to press the soil ring knife sample.

[0039] In the above embodiment, the supporting portion 231 is detachably installed on the experimental box 220 to block the soil ring knife sample, and the pressing portion 232 is located at the other end of the experimental box 220. The driving portion 233 drives the pressing portion 232 to clamp the ring knife sample, thereby applying pressure to the ring knife sample.

[0040] Any implementation method that can drive the pressing part 232 to press the soil ring knife sample is feasible, see Figure 3 In a specific embodiment, the driving part 233 includes a support seat 2331, a swing rod 2332 and a counterweight 2333. The support seat 2331 is installed on the box body 100. The middle part of the swing rod 2332 is hinged to the support seat 2331. The counterweight 2333 is suspended at one end of the swing rod 2332, and the other end of the swing rod 2332 presses against the pressing part 232. When the gravity of the counterweight 2333 acts on the swing rod 2332, the swing rod 2332 presses against the pressing part 232, thereby applying a stable pressure to the pressing part 232.

[0041] It should be emphasized that any implementation method that can clamp the soil ring knife sample from both ends is feasible. In another embodiment, the top of the experimental box 220 is open, and the soil ring knife sample is placed in the experimental box 220. A pressure cover 2334 is erected on the top of the experimental box 220, and the driving part 233 is used to drive the experimental box 220 to move upward as a whole, so that the experimental box 220 and the pressure cover 2334 clamp the soil ring knife sample, thereby also applying pressure to the soil ring knife sample.

[0042] See also Figure 4 In another embodiment, the test box 220 is fixed on the table, and the driving unit 233 is used to clamp and press the soil ring knife sample directly from the top of the test box 220. In this embodiment, the driving unit 233 includes a transmission frame 2335, and the transmission frame 2335 is connected to the swing rod 2332 and the pressure cover 2334, so that the clamping cover 2334 can move up and down with the rotation of the swing rod 2332, so that the test box 220 and the pressure cover 2334 clamp and press the soil ring knife sample.

[0043] In some preferred embodiments, the temperature control assembly 300 includes a power supply module 310, a heating fan 320 and a temperature sensor 330. The power supply module 310 is electrically connected to the heating fan 320 and the temperature sensor 330 respectively. The temperature sensor 330 detects the temperature in the storage chamber 111. When the temperature in the storage chamber 111 is higher than a preset temperature, the power supply module 310 stops supplying power to the heating fan 320. When the temperature in the storage chamber 111 is lower than a preset temperature, the power supply module 310 starts supplying power to the heating fan 320. When the temperature is lower than the preset temperature, the heating fan 320 works to increase the temperature in the storage chamber 111.

[0044] First, the soil ring knife sample to be tested is placed in the test box 220, and one end of the water supply pipe 212 is connected to the water supply pump 211, and the other end is connected to the test box 220. The water supply pump 211 supplies water to the water supply pipe 212, and water can be poured into the test box 220 to infiltrate the soil ring knife sample. The soil ring knife sample can be fully infiltrated. Then the water supply part 210 can be adjusted to stop supplying water to the test box 220. The drain pipe 214 can be used to extract the accumulated water in the test box 220 to avoid the accumulation of water in the test box 220 affecting the final experimental results. The heating end is used to emit heat to adjust the temperature in the box 100. The temperature sensor 330 detects the temperature in the storage chamber 111. When the temperature in the storage chamber 111 is higher than the preset temperature, the power supply module 310 stops supplying power to the heating fan 320. When the temperature in the storage chamber 111 is lower than the preset temperature, the power supply module 310 starts to supply power to the heating fan 320. When the temperature is lower than the preset temperature, the working housing of the heating fan 320 increases the temperature in the storage chamber 111. After the fully soaked soil ring knife sample is dried at a certain temperature, water can be re-supplied into the experimental box 220 to soak the soil ring knife sample again. In this way, a soil ring knife sample that has undergone multiple dry-wet cycles at a certain temperature can be obtained. Using the soil sample dry-wet cycle experimental device provided by the present invention, the temperature in the storage chamber 111 can be adjusted, thereby simulating the process of soil layer dry-wet cycles under different ambient temperatures.

[0045] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A soil sample dry-wet cycle experimental device, characterized in that: include: A box body having a storage cavity therein, and a plurality of ventilation holes communicating with the storage cavity are opened on the side wall of the box body; At least one set of circulation components, the circulation components including a water supply part and an experimental box for receiving a soil ring knife sample, the experimental box being placed in the receiving cavity, the water supply part having an output end connected to the experimental box to supply water to the experimental box; A temperature control component having a heating end located in the storage cavity, the heating end emitting heat to adjust the temperature in the storage cavity; The circulation assembly further comprises a pressure member, wherein the pressure member has a pressing end for pressing the soil ring knife sample, and the pressure applied by the pressing end to the soil ring knife sample is adjustable; The test box is cylindrical, and the pressure member includes a supporting portion, a pressing portion, and a driving portion. The supporting portion is detachably mounted on one end of the test box, and the pressing portion is movably arranged on the other end of the test box, and the pressing end is located on the pressing portion. The driving portion drives the pressing end to press the soil ring knife sample. The driving part includes a support seat, a swing rod and a counterweight block, wherein the support seat is installed on the box body, the middle part of the swing rod is hinged to the support seat, the counterweight block is suspended at one end of the swing rod, and the other end of the swing rod presses against the pressing part; The water supply component includes a water supply pump and a water supply pipe, one end of the water supply pipe is connected to the water supply pump, and the other end of the water supply pipe is connected to the experimental box; The water supply part also includes a drainage pump and a drainage pipe, one end of the drainage pipe is connected to the drainage pump, and the other end of the drainage pipe is connected to the experimental box; The water supply pipe is connected to the top end of the experimental box, and the drainage pipe is connected to the bottom end of the experimental box.

2. The soil sample dry-wet cycle experimental device according to claim 1, characterized in that: The temperature control component includes a power supply module, a heating fan and a temperature sensor. The power supply module is electrically connected to the heating fan and the temperature sensor, respectively. The temperature sensor detects the temperature in the storage cavity. When the temperature in the storage cavity is higher than a preset temperature, the power supply module stops supplying power to the heating fan. When the temperature in the storage cavity is lower than a preset temperature, the power supply module starts supplying power to the heating fan.

3. The soil sample dry-wet cycle experimental device according to claim 1, characterized in that: The box body is an acrylic box body.

4. The soil sample dry-wet cycle experimental device according to claim 1, characterized in that: The box body comprises a box body and an opening and closing door, the box body has the storage cavity, and the box body is provided with a take-in and put-out opening connecting the storage cavity and the outside, and the opening and closing door can be opened and closed on the box body to open or close the take-in and put-out opening.

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