Testing device for simulating dangerous rock deformation under heavy rainfall condition after high temperature

Abstract

The utility model discloses a test device for simulating dangerous rock deformation under the condition of heavy rainfall after high temperature, which comprises a test box body, a dangerous rock model, a monitoring assembly, a heating assembly and a rainfall assembly, and the test box body is of a rectangular box body structure with an opening at the upper part and is at least provided with a transparent side wall for observation; the dangerous rock model is arranged in the test box body, the slope side faces the transparent side wall of the test box body, and the heating assembly is arranged on the upper portion of the test box body and used for heating the interior of the test box body to simulate a high-temperature environment. The rainfall assembly is arranged at an opening in the upper part of the test box body and seals the test box body, the rainfall assembly is used for simulating a rainfall environment in the test box body, and the monitoring assembly comprises an internal monitoring part and an external detection part; the test device can track, analyze and research the dynamic evolution process of slope instability under the heavy rainfall condition, and provides technical support for guiding anchor cable reinforcement dangerous rocks.

Description

Technical Field

[0001] The utility model relates to the technical field of slope tests, in particular to a test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature. Background Technique

[0002] Due to the large undulation of the terrain in mountainous areas of our country, there are many dangerous rocks distributed on the slopes. Coupled with the fact that most of our country is in the subtropical monsoon climate zone, with high temperature and abundant rainfall in summer, and frequent geological activities in most western regions located on the circum-Pacific volcanic earthquake belt. With the significant increase in the number of projects such as highway cutting slopes and foundation pit support in our country, problems such as slope instability and collapse are becoming increasingly serious.

[0003] Therefore, how to effectively reduce the scouring and geological disturbance of dangerous rocks by rainfall and geological activities is a key consideration factor for the reinforcement of dangerous rocks. Content of the Utility Model

[0004] In view of this, the utility model provides a test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature, which provides technical support for guiding the reinforcement of dangerous rocks by anchor cables through tracking, analyzing and researching the dynamic evolution process of slope instability under the condition of heavy rainfall.

[0005] A test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature provided by the utility model includes a test box body, a dangerous rock model, a monitoring component, a heating component and a rainfall component. The test box body is a rectangular box body structure with an open upper part and at least has one transparent side wall for observation. The dangerous rock model is arranged in the test box body and the slope side faces the transparent side wall of the test box body. The heating component is arranged at the upper part of the test box body and is used for heating the inside of the test box body to simulate a high temperature environment. The rainfall component is arranged at the open upper part of the test box body and closes the test box body. The rainfall component is used for simulating a rainfall environment inside the test box body. The monitoring component includes an internal monitoring piece arranged inside the test box body and an external detection piece arranged outside the test box body.

[0006] Further, the internal monitoring piece includes a thermometer fixed on the test box body and a stress induction sheet arranged inside the dangerous rock model. The thermometer is used for monitoring the temperature change inside the test box body, and the stress induction sheet is used for monitoring and recording the stress change of the dangerous rock model.

[0007] The external detection piece includes a total station and a camera located outside the test box body and facing the transparent side wall. The total station is used for observing the settlement activity of the dangerous rock model, and the camera is used for recording the whole process of the test.

[0008] Further, air outlets are provided at the upper parts of the other side walls of the test chamber. The heating assembly includes a heater and a blower disposed outside the test chamber. A air supply duct is provided between the blower and the air outlet. The blower is used to send external air into the interior of the test chamber successively through the air supply duct and the air outlet, and the heater heats the air in the air supply duct.

[0009] Further, a water permeable assembly is also provided between the bottom of the test chamber and the dangerous rock model. The water permeable assembly includes a water permeable brick and a water permeable cloth arranged successively from bottom to top.

[0010] Further, a drain outlet for draining water is provided at the bottom of the test chamber. A water circulation assembly is also provided between the drain outlet and the rainfall assembly. The water circulation assembly includes a catch basin communicated with the drain outlet, a sedimentation tank communicated with the catch basin, a water tank respectively communicated with the sedimentation tank and the rainfall assembly, and a connecting pipeline. Water pumps are provided on the connecting pipelines at both ends of the water tank.

[0011] Further, the rainfall assembly includes a rainfall platform provided at the opening of the test chamber. A plurality of water outlet holes are evenly distributed on the side of the rainfall platform facing the interior of the test chamber. A regulator for controlling the water output is provided at the bottom of the rainfall platform below the corresponding water outlet holes. The water inlet hole of the rainfall platform is communicated with the water tank.

[0012] Further, an automatic switch and a water meter are also provided on the water tank. When the water volume in the water tank reaches the preset parameter of the water meter, the automatic switch is closed or opened.

[0013] Further, a control system is also included, which is electrically connected to the monitoring assembly, the heating assembly, the rainfall assembly and the water circulation assembly respectively. The control system controls the start and stop of the heating assembly, the rainfall assembly and the water circulation assembly according to the data collected by the monitoring assembly.

[0014] The beneficial effects of the present utility model are as follows: The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature provided by the present utility model provides effective test data: Through the design of the water permeable brick and the water permeable cloth, the device can effectively simulate the surface drainage situation and the water accumulation situation, and ensure the authenticity and reliability of the test data; Cost is saved and the long-term nature of the test is realized: Through the setting of the catch basin and the sedimentation tank, the water pump realizes the recycling of water resources. Through the setting of the rainfall device, the rainfall amount and the persistence can be adjusted at any time; Adjustability and maintainability: Each component of the system can be adjusted and maintained according to actual needs. Description of the Drawings

[0015] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0016] Figure 1 This is a schematic structural diagram of a test device for simulating the deformation of dangerous rocks under strong rainfall conditions after high temperature in the present utility model;

[0017] Among them, the reference numerals are: 1 - test box body; 2 - dangerous rock model; 3 - rainfall assembly; 4 - air blower; 5 - heater; 6 - water permeable assembly; 7 - catch basin; 8 - sedimentation tank; 9 - water tank; 10 - cushion block; 11 - solenoid valve; 12 - connecting pipeline. Specific embodiments

[0018] As shown in the figure, a test device for simulating the deformation of dangerous rocks under strong rainfall conditions after high temperature provided by the present utility model includes a test box body 1, a dangerous rock model 2, a monitoring assembly, a heating assembly, and a rainfall assembly 3. The test box body 1 is a rectangular box structure with an open upper part and at least has one transparent side wall for observation. The dangerous rock model 2 is arranged in the test box body 1 with the slope side facing the transparent side wall of the test box body 1. The heating assembly is arranged at the upper part of the test box body 1 and is used to heat the inside of the test box body 1 to simulate a high temperature environment. The rainfall assembly 3 is arranged at the upper opening of the test box body 1 and closes the test box body 1. The rainfall assembly 3 is used to simulate a rainfall environment inside the test box body 1. The monitoring assembly includes an internal monitoring member arranged inside the test box body 1 and an external detection member arranged outside the test box body 1; among them, the test box body 1 is a rectangular box structure with an open upper part. One side wall of the test box body 1 is made of glass to form a transparent side wall for facilitating the experimenter to observe the inside of the box body, and the other three side walls are made of waterproof materials to prevent water from seeping out of the test box body 1 after rainfall simulation; a heating assembly is arranged on the opposite side walls at the upper part of the test box body 1 and the inside of the test box body 1 is heated through the heating assembly so that the dangerous rock model 2 is in a simulated high temperature environment; and the rainfall assembly 3 can simulate a rainfall environment after the dangerous rock model 2 is in a simulated high temperature environment, and then the deformation of the dangerous rock model 2 under strong rainfall conditions after high temperature is observed through the monitoring assembly; this test device provides technical support for guiding the cable - anchored reinforcement of dangerous rocks by tracking, analyzing and researching the dynamic evolution process of slope instability under strong rainfall conditions.

[0019] In this embodiment, the internal monitoring member includes a thermometer fixed on the test box body 1 and a stress sensing sheet arranged inside the dangerous rock model 2. The thermometer is used to monitor the temperature change inside the test box body 1, and the stress sensing sheet is used to monitor and record the stress change of the dangerous rock model 2; the thermometer is mainly used to monitor whether the temperature environment inside the test box body 1 meets the test requirements, and the stress sensing sheet is arranged inside the dangerous rock model 2 mainly to monitor the overall stress change of the dangerous rock model 2 under strong rainfall conditions after high temperature. Both the thermometer and the stress sensing sheet are prior arts and will not be elaborated here;

[0020] The external detection components include a total station and a camera located outside the test box body 1 and facing the transparent side wall. The total station is used to observe the settlement activities of the dangerous rock model 2, and the camera is used to record the whole process of the test. The external detection components are arranged facing the transparent side wall to facilitate the whole-process monitoring of the external changes of the dangerous rock model 2. By arranging the total station and the camera, the dynamic evolution process of slope instability can be tracked for subsequent analysis and research, providing technical support for guiding the cable anchor reinforcement of dangerous rocks.

[0021] In this embodiment, air outlets are provided at the upper parts of the other side walls of the test box body 1. The heating assembly includes a heater 5 and a blower 4 arranged outside the test box body 1. A ventilation duct is arranged between the blower 4 and the air outlet. The blower 4 is used to send external air into the test box body 1 through the ventilation duct and the air outlet in sequence, and the heater 5 heats the air in the ventilation duct. The heater 5 and the blower 4 can be controlled to start or stop, and the control method can be manual control or automatic control, but mainly rely on the data of the thermometer for judgment. At the beginning of the test, first observe the value of the thermometer. When the temperature is lower than the preset temperature, the blower 4 and the heater 5 start to work. When the thermometer reaches the preset temperature, it proves that the internal environment temperature of the test box body 1 reaches the test temperature, and at this time, the blower 4 and the heater 5 stop working.

[0022] In this embodiment, a water permeable component 6 is further arranged between the bottom of the test box body 1 and the dangerous rock model 2. The water permeable component 6 includes a water permeable brick and a water permeable cloth arranged in sequence from bottom to top. The water permeable brick is made of a material with the same water permeability as the dangerous rock model 2 to ensure the reliability of the test data. Through the design of the water permeable brick and the water permeable cloth, the device can effectively simulate the surface drainage and water accumulation conditions, ensuring the authenticity and reliability of the test data.

[0023] In this embodiment, a drain outlet for draining water is provided at the bottom of the test box body 1. A water circulation component is further provided between the drain outlet and the rainfall component 3. The water circulation component includes a sump 7 communicated with the drain outlet, a sedimentation tank 8 communicated with the sump 7, a water tank 9 respectively communicated with the sedimentation tank 8 and the rainfall component 3, and a connecting pipeline. A water pump is provided on the connecting pipelines at both ends of the water tank 9. The sump 7 is used to collect the water flowing out of the test box body 1, the sedimentation tank 8 is used to sediment and filter the water in the sump 7, and the water tank 9 is used to store the sediment-filtered water. Connecting pipelines 12 are respectively provided between the sump 7 and the test box body 1, between the sump 7 and the sedimentation tank 8, between the sedimentation tank 8 and the water tank 9, and between the water tank 9 and the rainfall component 3. Except between the sump 7 and the test box body 1, water pumps are provided between other connecting pipelines 12 to facilitate water transfer. A cushion block 10 can be placed at the bottom of the water tank 9 to make the water outlet of the water tank 9 higher than the water inlet of the rainfall device, facilitating water discharge. By designing a sump 7 outside the drain outlet at the bottom of the model box, introducing a sedimentation tank 8, then pumping the water back into the water tank 9 with a water pump, and subsequently providing test water for the rainfall device through the water tank 9 for simulation tests, the recycling of test water is finally realized.

[0024] In this embodiment, the rainfall component 3 includes a rainfall platform provided at the opening of the test box body 1. A number of water outlet holes are evenly distributed on the inner side of the rainfall platform facing the test box body 1. A regulator for controlling the water discharge amount is provided below the corresponding water outlet holes at the bottom of the rainfall platform. The water inlet hole of the rainfall platform is communicated with the water tank 9. The rainfall platform is provided at the opening of the test box body 1 and can close the upper opening of the test box body 1. The rainfall platform is mainly arranged in an S shape by a number of PVC pipes, and a number of water outlet holes are evenly distributed at the bottom of the PVC pipes facing the inside of the test box body 1. The regulator is a regulating valve piece provided at the water outlet hole, and the regulating valve piece can be controlled to adjust the size of the water outlet hole to adjust the size of the water discharge amount.

[0025] In this embodiment, an automatic switch and a water meter are further provided on the water tank 9. When the water volume in the water tank 9 reaches the preset parameter of the water meter, the automatic switch is closed or opened. The water meter is arranged inside the water tank 9 and is mainly used to monitor the amount of water inside the water tank 9, preventing the water in the water tank 9 from overflowing due to being too full, causing waste, or the amount of water in the water tank 9 being too small to conduct simulation tests. The automatic switch is a solenoid valve 11, which is mainly arranged on the pipeline on the water inlet side of the water tank 9 and can be controlled to open or close the pipeline to supply water to the water tank 9.

[0026] In this embodiment, it further includes a control system electrically connected to the monitoring component, the heating component, the rainfall component 3, and the water circulation component respectively. The control system controls the start and stop of the heating component, the rainfall component 3, and the water circulation component according to the data collected by the monitoring component. Among them, the control system is electrically connected to the thermometer to monitor the temperature inside the test box 1, and the control system is electrically connected to the stress sensing sheet to monitor the stress change of the dangerous rock model 2 during the test. The control system is electrically connected to the heater 5 and the air blower 4 respectively to control the start and stop of the heater 5 and the air blower 4. The control system is electrically connected to the regulator in the rainfall component 3 to control the operation of the regulator. The control system is electrically connected to the solenoid valve 11 and the water pump in the water circulation component to control the start and stop of the solenoid valve 11 and the water pump.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An experimental device for simulating the deformation of dangerous rocks under strong rainfall conditions after high temperature, characterized in that: It includes a test box body, a dangerous rock model, a monitoring component, a heating component, and a rainfall component. The test box body is a rectangular box structure with an open upper part and at least one transparent side wall for observation. The dangerous rock model is arranged inside the test box body with the slope side facing the transparent side wall of the test box body. The heating component is arranged at the upper part of the test box body and is used to heat the inside of the test box body to simulate a high-temperature environment. The rainfall component is arranged at the open upper part of the test box body and closes the test box body. The rainfall component is used to simulate a rainfall environment inside the test box body. The monitoring component includes an internal monitoring piece arranged inside the test box body and an external detection piece arranged outside the test box body.

2. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 1, characterized in that: The internal monitoring piece includes a thermometer fixed on the test box body and a stress induction sheet arranged inside the dangerous rock model. The thermometer is used to monitor the temperature change inside the test box body, and the stress induction sheet is used to monitor and record the stress change of the dangerous rock model. The external detection piece includes a total station and a camera arranged outside the test box body and facing the transparent side wall. The total station is used to observe the settlement activity of the dangerous rock model, and the camera is used to record the whole test process.

3. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 1, characterized in that: Air outlets are arranged at the upper parts of the other side walls of the test box body. The heating component includes a heater and a blower arranged outside the test box body. A ventilation duct is arranged between the blower and the air outlet. The blower is used to send external air into the test box body through the ventilation duct and the air outlet in sequence, and the heater heats the air in the ventilation duct.

4. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 1, characterized in that: A water permeable component is also arranged between the bottom of the test box body and the dangerous rock model. The water permeable component includes a permeable brick and a permeable cloth arranged successively from bottom to top.

5. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 1, characterized in that: A drain outlet for drainage is arranged at the bottom of the test box body. A water circulation component is also arranged between the drain outlet and the rainfall component. The water circulation component includes a sump pool communicated with the drain outlet, a sedimentation tank communicated with the sump pool, a water tank respectively communicated with the sedimentation tank and the rainfall component, and a connecting pipeline. Water pumps are arranged on the connecting pipelines at both ends of the water tank.

6. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 5, wherein: The rainfall component includes a rainfall platform arranged at the opening of the test box body. A plurality of water outlet holes are evenly distributed on the side of the rainfall platform facing the inside of the test box body. A regulator for controlling the water output of the water outlet holes is arranged at the bottom of the rainfall platform below the corresponding water outlet holes. The water inlet hole of the rainfall platform is communicated with the water tank.

7. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 6, characterized in that: An automatic switch and a water meter are also arranged on the water tank. When the water volume in the water tank reaches the preset parameter of the water meter, the automatic switch closes or opens.

8. The test device for simulating the deformation of dangerous rocks under the condition of heavy rainfall after high temperature according to claim 5, wherein: It also includes a control system electrically connected to the monitoring component, the heating component, the rainfall component, and the water circulation component respectively. The control system controls the start and stop of the heating component, the rainfall component, and the water circulation component according to the data collected by the monitoring component.

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