Pressure-sensing controlled pulse backflushing static cone penetration indoor simulation testing device and testing method thereof

Abstract

The present application relates to static sounding simulation technical field, concretely is a kind of pressure sensing control's pulse backwash static sounding indoor simulation test device and its testing method, including: base, and symmetrically distributed side plate installed on base, side plate top is connected with top plate;Transmission lifting mechanism, set up on the side plate, the transmission lifting mechanism is connected with the chain that is symmetrically distributed on;Probe rod, sliding installation is in the base and is connected with the chain, the probe rod end is connected with probe, the transmission lifting mechanism can be driven by the chain probe rod movement in vertical direction;Gas hole, form in the probe rod circumferential outer wall and be circumferentially equidistant distribution, the probe rod is provided with gas cleaning mechanism, the gas cleaning mechanism is provided with follow-up guide mechanism, by the cooperation of gas cleaning mechanism and follow-up guide mechanism, can ensure that gas hole is treated comprehensively air blowing, to ensure the accuracy of test result.

Description

Technical Field

[0001] This invention relates to the field of static cone penetration simulation technology, specifically a pressure-sensing controlled pulse backwash static cone penetration indoor simulation test device and its test method. Background Technology

[0002] Static cone penetration testing is an in-situ testing technique that involves pressing a probe with a probe into the soil at a constant rate to continuously measure parameters such as cone tip resistance, sidewall friction, and pore water pressure, thereby assessing the mechanical properties of the soil.

[0003] During the indoor simulation test, the probe was pressed into a pre-prepared soil sample, and the sidewall friction data was collected in real time by the sensor. As the probe went deeper, the sticky particles in the soil sample tended to gradually adhere to and accumulate on the outer surface of the probe. These deposits would change the actual contact interface between the probe and the soil, causing the sidewall friction test value to deviate from the true value.

[0004] To address this, it is necessary to clean the deposits on the probe rod. In existing technologies, air blowing is commonly used to clean the probe rod by air impact. However, as the air pressure decreases along the jet path, the air blowing force provided to the probe rod also gradually decreases. That is, the impact force obtained by the orifice far from the air source end decreases, resulting in uneven cleaning effect on the probe rod surface. If a strong air pressure impact method is used, it is easy to disturb the soil sample around the probe rod, leading to inaccurate subsequent test results. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure-sensing controlled pulse backwashing static penetration test chamber simulation test device and test method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device includes:

[0008] A base, and side plates mounted on the base and symmetrically distributed thereon, with a top plate connected to the top of the side plates;

[0009] Also includes:

[0010] A transmission lifting mechanism is installed on the side plate, and symmetrically distributed chains are connected to the transmission lifting mechanism;

[0011] A probe rod is slidably mounted on the base and connected to the chain. A probe is connected to the end of the probe rod. The transmission lifting mechanism can drive the probe rod to move in the vertical direction through the chain.

[0012] An air supply hole is formed on the outer circumference of the probe rod and is equidistantly distributed around the circumference. An air supply and cleaning mechanism is provided inside the probe rod. A follow-up guide mechanism is provided on the air supply and cleaning mechanism. The follow-up guide mechanism can move when the air supply and cleaning mechanism moves and adjust the air supply angle of the air supply and cleaning mechanism towards the air supply hole.

[0013] As a further embodiment of the present invention: the transmission lifting mechanism includes a transmission rod and a first rotating rod rotatably mounted on the side plate, a toothed belt connected to the first rotating rod is sleeved on the transmission rod, and a third rotating rod is rotatably mounted on the base.

[0014] As a further embodiment of the present invention: the transmission lifting mechanism further includes a second rotating rod rotatably mounted on the top plate, a small gear is connected to the first rotating rod, a large gear meshing with the small gear is connected to the second rotating rod, and chain teeth are connected to the second rotating rod and the third rotating rod, the chain teeth meshing with the chain.

[0015] As a further embodiment of the present invention: a partition is connected inside the probe rod, and the partition divides the probe rod into two chambers, namely a pressurization chamber and an air blowing chamber.

[0016] As a further embodiment of the present invention: the air delivery and cleaning mechanism includes a limiting ring connected inside the probe rod, a plurality of conduits distributed circumferentially on the partition plate, a piston disc that slides and seals inside the probe rod and abuts against the limiting ring, and the conduits pass through the piston disc.

[0017] As a further embodiment of the present invention: the air delivery and cleaning mechanism further includes a push rod connected to the piston disc and passing through the partition plate, and a first spring is sleeved on the push rod, with the two ends of the first spring abutting against the piston disc and the partition plate respectively.

[0018] As a further embodiment of the present invention: the follow-up guiding mechanism includes a fixed sleeve connected to the partition plate, a tapered tube slidably mounted on the fixed sleeve, and a tapered ring connected to the end of the push rod that abuts against the tapered tube.

[0019] As a further embodiment of the present invention: the follow-up guiding mechanism further includes a fixing ring connected to the fixing sleeve and engaging with the tapered tube, and a second spring is sleeved on the fixing sleeve, with the two ends of the second spring engaging with the partition and the tapered tube respectively.

[0020] As a further aspect of the present invention: an air supply channel is formed inside the probe rod, and the air supply channel is connected to the pressurization chamber.

[0021] A pressure-sensing controlled pulse backwashing static cone penetration test method for indoor simulation includes the following steps:

[0022] Step 1: Control the probe rod to insert into the ground through the transmission lifting mechanism, and perform corresponding tests under the action of the probe rod and probe;

[0023] Step 2: When soil samples adhere to the side wall of the probe, air can be introduced into the probe;

[0024] Step 3: The pressure in the pressurization chamber increases, which drives the air delivery and cleaning mechanism to move. When the pressure in the pressurization chamber reaches the set value, air is delivered to the air delivery port.

[0025] Step 4: The air delivery cleaning mechanism will also drive the follow-up guide mechanism to move, thereby continuously changing the air delivery direction of the air delivery cleaning mechanism to perform air blowing stripping action on the air delivery hole.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This invention achieves uniform air-blowing peeling of soil samples adhering to the probe surface through the coordinated operation of the air-blowing cleaning mechanism and the follow-up guiding mechanism. In the initial stage of air blowing, the air pressure in the pressurization chamber is high, the conical tube is at its minimum taper, and the airflow impacts the lowest position of the air-blowing hole at a relatively divergent angle. As the gas is released, the air pressure gradually decreases, and the air-blowing position gradually sweeps from the lower side to the upper side of the air-blowing hole, so that the compressed gas can act on the outer wall of the probe rod in sequence throughout the axial range of the entire air-blowing hole, thus achieving complete peeling of the adhering soil sample.

[0028] During this process, the air blowing pressure gradually decreases, the corresponding conical tube is gradually expanded, the taper gradually increases, the annular gap between the conical tube and the inner wall of the probe decreases, and the airflow impact angle changes from divergent to concentrated. In this way, by reducing the airflow exit angle and increasing the airflow concentration, the decrease in impact force is compensated, so that the upper area of ​​the air delivery hole can still obtain sufficient air blowing peeling force. At the same time, the intermittent opening and closing of the solenoid valve causes the gas to impact in a pulse shape, generating a vibration effect, which further enhances the peeling effect of the attached material. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0030] Figure 2 This is a schematic diagram of the structure from another angle in one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0031] Figure 3 This is a front view schematic diagram of one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0032] Figure 4 This is a schematic diagram of the cross-sectional structure of the probe in one embodiment of a pressure-sensing controlled pulse backflushing static cone penetration test chamber.

[0033] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0034] Figure 6 This is a schematic diagram showing the connection relationship between the air supply cleaning mechanism and the follow-up guiding mechanism in one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0035] Figure 7 for Figure 6 Another structural diagram from a different angle.

[0036] Figure 8 This is an exploded structural diagram of the air delivery cleaning mechanism and the follow-up guiding mechanism in one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0037] Figure 9 This is a cross-sectional structural diagram of the air delivery cleaning mechanism and the follow-up guiding mechanism in one embodiment of a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device.

[0038] In the diagram: 1. Base; 2. Side plate; 3. Top plate; 4. Transmission rod; 5. Toothed belt; 6. First rotating rod; 7. Small gear; 8. Second rotating rod; 9. Large gear; 10. Chain; 11. Probe; 1101. Air inlet; 1102. Limiting ring; 1103. Air supply channel; 12. Probe; 13. Partition plate; 14. Guide tube; 15. Piston disc; 16. Push rod; 17. First spring; 18. Conical ring; 19. Fixing sleeve; 1901. Fixing ring; 20. Conical tube; 21. Second spring. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0041] Please see Figures 1-9 In this embodiment of the invention, a pressure-sensing controlled pulse backwashing static penetration test chamber simulation device includes:

[0042] A base 1, and side plates 2 installed on the base 1 and symmetrically distributed, with a top plate 3 connected to the top of the side plates 2;

[0043] Also includes:

[0044] A transmission lifting mechanism is provided on the side plate 2, and symmetrically distributed chains 10 are connected to the transmission lifting mechanism;

[0045] The probe rod 11 is slidably mounted on the base 1 and connected to the chain 10. The probe rod 11 is connected to a probe 12 at its end. The transmission lifting mechanism can drive the probe rod 11 to move in the vertical direction through the chain 10.

[0046] An air supply hole 1101 is formed on the outer circumference of the probe rod 11 and is distributed equidistantly in a circle. An air supply cleaning mechanism is provided inside the probe rod 11. A follow-up guide mechanism is provided on the air supply cleaning mechanism. The follow-up guide mechanism can move when the air supply cleaning mechanism moves and adjust the air supply angle of the air supply cleaning mechanism towards the air supply hole 1101.

[0047] Specifically, the indoor simulation test of static cone penetration testing mainly includes three parameters: cone tip resistance, sidewall friction, and pore water pressure. When testing the sidewall friction, it is necessary to ensure that the probe 11 does not adhere to the soil sample during the test to guarantee the accuracy of the results. To achieve this, during the test, a transmission lifting mechanism can be used to extend the probe 11 towards the test position, allowing the probe 12 to be inserted into the soil sample. The sidewall friction is then detected by a sensor. When the sensor detects an abnormality in the sidewall friction, it indicates that the probe... If there is too much soil adhering to the outer circumference of the probe 11, it is necessary to perform air blowing treatment on the adhering material. At this time, air can be supplied into the probe 11 to increase the air pressure inside the probe 11. When the air pressure rises to the set value, the air supply and cleaning mechanism can blow the gas inside the probe 11 to the air supply hole 1101 to perform air blowing and peeling treatment on the adhering material. The air supply and cleaning mechanism will also drive the follow-up guide mechanism to move. Under the action of the follow-up guide mechanism, the air blowing direction and air blowing position can be adjusted according to the air pressure fluctuation, thereby ensuring that the air supply hole 1101 is fully air blown.

[0048] Please see Figures 1-3 The transmission lifting mechanism includes a transmission rod 4 and a first rotating rod 6 rotatably mounted on the side plate 2. A toothed belt 5 connected to the first rotating rod 6 is sleeved on the transmission rod 4. A third rotating rod is rotatably mounted on the base 1. The transmission lifting mechanism also includes a second rotating rod 8 rotatably mounted on the top plate 3. A small gear 7 is connected to the first rotating rod 6. A large gear 9 meshing with the small gear 7 is connected to the second rotating rod 8. Chain teeth are connected to the second rotating rod 8 and the third rotating rod, and the chain teeth mesh with the chain 10.

[0049] In detail, toothed wheels are installed on the transmission rod 4 and the first rotating rod 6, and the size of the toothed wheel on the first rotating rod 6 is larger than that of the toothed wheel on the transmission rod 4. Therefore, under the transmission action of the toothed belt 5, it can achieve the effect of speed reduction and effort saving.

[0050] When it is necessary to control the insertion of probe 11 into the test soil sample, the transmission rod 4 can be rotated, and under the action of toothed belt 5, the first rotating rod 6 is driven to rotate. At this time, the first rotating rod 6 receives first-level deceleration and saves effort. The first rotating rod 6 drives the small gear 7 to rotate. The small gear 7 controls the rotation of the second rotating rod 8 through the meshing transmission of the large gear 9. The second rotating rod 8 receives second-level deceleration and saves effort. The second rotating rod 8 will drive the chain 10 to move through the chain teeth. Under the action of chain 10, the probe 11 is controlled to gradually insert into the test soil sample.

[0051] In summary, by setting the transmission ratio differently, a secondary deceleration and labor-saving effect can be achieved. In this way, with a smaller force applied, the probe 11 can be controlled to insert into the test soil sample, thereby completing the subsequent test.

[0052] Please see Figure 4 The probe rod 11 is connected to a partition 13, which divides the probe rod 11 into two chambers, namely a pressurization chamber and an air blowing chamber.

[0053] Please see Figures 4-9 The air delivery and cleaning mechanism includes a limiting ring 1102 connected inside the probe rod 11. A plurality of conduits 14 are connected to the partition plate 13 and are distributed circumferentially. A piston disc 15 is slidably and sealingly connected inside the probe rod 11 and abuts against the limiting ring 1102. The conduits 14 pass through the piston disc 15. The air delivery and cleaning mechanism also includes a push rod 16 connected to the piston disc 15 and passing through the partition plate 13. A first spring 17 is sleeved on the push rod 16. The two ends of the first spring 17 abut against the piston disc 15 and the partition plate 13, respectively.

[0054] Please see Figures 4-9 The follow-up guiding mechanism includes a fixed sleeve 19 connected to the partition 13, a tapered tube 20 slidably mounted on the fixed sleeve 19, a tapered ring 18 connected to the end of the push rod 16 and engaging with the tapered tube 20, the follow-up guiding mechanism also includes a fixed ring 1901 connected to the fixed sleeve 19 and engaging with the tapered tube 20, a second spring 21 is sleeved on the fixed sleeve 19, the two ends of the second spring 21 abut against the partition 13 and the tapered tube 20 respectively, an air supply channel 1103 is formed inside the probe 11, and the air supply channel 1103 is connected to the pressurization chamber.

[0055] Furthermore, the gas delivery channel 1103 is connected to the air pump, which can pump gas into the pressurization chamber through the gas delivery channel 1103. The conduit 14 has a built-in solenoid valve, which can control the conduction state of the conduit 14 under the action of the solenoid valve.

[0056] Please see Figure 4 In the initial state, the air pressure in the pressurization chamber and the air blowing chamber are both at normal atmospheric pressure. At this time, the piston disc 15 and the limiting ring 1102 are in contact, that is, the distance between the piston disc 15 and the partition 13 is the largest. The extension of the first spring 17 in its natural state is greater than the maximum distance between the piston disc 15 and the partition 13. Therefore, the first spring 17 is in a pre-compressed state and always provides the piston disc 15 with a thrust toward the limiting ring 1102.

[0057] In this state, the piston disc 15 controls the conical ring 18 to be located at the end of its stroke in the direction close to the partition 13 via the push rod 16. Under the action of the conical ring 18, the conical tube 20 and the fixed ring 1901 are in a contact state, and the conical tube 20 is in a stretched state, that is, the taper of the conical tube 20 is the largest, and the gap between the conical tube 20 and the inner wall of the probe 11 is the smallest. Under the action of the conical tube 20, the second spring 21 is in a maximum compression state.

[0058] When air blowing stripping treatment is required on the air inlet 1101, the air pump works and pumps gas into the pressurization chamber through the air delivery channel 1103. The air pressure in the pressurization chamber gradually increases and overcomes the elastic force of the first spring 17, pushing the piston disc 15 to move towards the direction closer to the partition 13, so that the first spring 17 is further compressed. At the same time, the piston disc 15 drives the push rod 16 to move synchronously and controls the conical ring 18 to move away from the conical tube 20.

[0059] When the conical ring 18 just starts to move, the position of the conical tube 20 remains unchanged because it abuts against the fixed ring 1901. The conical tube 20 itself gradually contracts due to the elastic rebound force, and its inner wall remains in contact with the conical ring 18 until the taper of the conical tube 20 reaches its minimum. The conical ring 18 continues to move, and the second spring 21 is released elastically, pushing the conical tube 20 to move down synchronously with the conical ring 18 until the air pressure in the pressurization chamber reaches the set value. At this time, the flow direction of the airflow guided by the conical surface of the conical tube 20 points to the lowest position of the air delivery hole 1101.

[0060] The solenoid valve controls the conduit 14 to open, and the compressed gas in the pressurization chamber enters the air blowing chamber through the conduit 14. Under the guidance of the conical surface of the conical tube 20, it impacts the lowest position of the air delivery hole 1101 at a certain angle, and begins to air blow off the soil sample attached to the outer wall of the probe rod 11.

[0061] As the gas is gradually delivered, the pressure in the pressurization chamber gradually decreases. The first spring 17 is released elastically, pushing the piston disc 15 to move toward the initial position. The piston disc 15 drives the conical ring 18 to move upward through the push rod 16. The conical ring 18 drives the conical tube 20 to move upward synchronously, thereby gradually changing the position of the air blowing action on the air delivery port 1101, so that the airflow impact point gradually moves from the lower side to the upper side of the air delivery port 1101. During this upward movement, the solenoid valve continuously opens and closes, so that the gas impacts the air delivery port 1101 in a pulse shape, thereby achieving a vibration effect and enhancing the effect of peeling off the attached substances. The air pressure in the pressurization chamber gradually decreases and remains at a high level.

[0062] When the conical tube 20 moves again to the position of contacting the fixed ring 1901, the gas pressure has decreased to a lower level, and the airflow impact force is also weakened. The conical ring 18 continues to move upward, causing the conical tube 20 to undergo elastic deformation, and its taper is gradually expanded. The annular gap between the conical tube 20 and the inner wall of the probe rod 11 decreases accordingly. Under the guiding effect of the conical tube 20, the impact angle of the airflow changes, and it impacts the upper area of ​​the air delivery hole 1101 in a more concentrated manner.

[0063] In this way, the conical tube 20 can passively expand and contract according to the change of air pressure, and compensate for the decrease in impact force by changing the impact angle of the airflow, so that all areas of the air delivery hole 1101 from bottom to top can obtain effective air blowing stripping effect, avoiding the problem of incomplete cleaning of the upper area due to pressure decay in the traditional fixed angle air blowing method, thus ensuring the complete removal of soil samples attached to the outer wall of the probe 11. When the piston disc 15 returns to the initial position, the air blowing process is completed, the solenoid valve controls the conduit 14 to close again, and the pressurization chamber returns to a sealed state.

[0064] A pressure-sensing controlled pulse backwash static cone penetration test method includes the following steps:

[0065] Step 1: Control the probe rod 11 to insert into the ground through the transmission lifting mechanism, and perform corresponding tests under the action of the probe rod 11 and the probe 12;

[0066] Step 2: When soil sample adheres to the side wall of probe 11, air can be introduced into probe 11;

[0067] Step 3: The pressure in the pressurization chamber increases, which drives the air delivery and cleaning mechanism to move. When the pressure in the pressurization chamber reaches the set value, air is delivered to the air delivery port 1101.

[0068] Step 4: The air delivery cleaning mechanism will also drive the follow-up guide mechanism to move, thereby continuously changing the air delivery direction of the air delivery cleaning mechanism to perform air blowing stripping action on the air delivery hole 1101.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device, comprising: A base, and side plates mounted on the base and symmetrically distributed thereon, with a top plate connected to the top of the side plates; Its characteristic is that it further includes: A transmission lifting mechanism is installed on the side plate, and symmetrically distributed chains are connected to the transmission lifting mechanism; A probe rod is slidably mounted on the base and connected to the chain. A probe is connected to the end of the probe rod. The transmission lifting mechanism can drive the probe rod to move in the vertical direction through the chain. An air supply hole is formed on the outer circumference of the probe rod and is equidistantly distributed around the circumference. An air supply and cleaning mechanism is provided inside the probe rod. A follow-up guide mechanism is provided on the air supply and cleaning mechanism. The follow-up guide mechanism can move when the air supply and cleaning mechanism moves and adjust the air supply angle of the air supply and cleaning mechanism towards the air supply hole.

2. The pressure-sensing controlled pulse backwashing static cone penetration chamber simulation test device according to claim 1, characterized in that, The transmission lifting mechanism includes a transmission rod and a first rotating rod rotatably mounted on the side plate. A toothed belt connected to the first rotating rod is sleeved on the transmission rod, and a third rotating rod is rotatably mounted on the base.

3. The pressure-sensing controlled pulse backwashing static cone penetration chamber simulation test device according to claim 2, characterized in that, The transmission lifting mechanism further includes a second rotating rod rotatably mounted on the top plate. A small gear is connected to the first rotating rod, and a large gear meshing with the small gear is connected to the second rotating rod. Chain teeth are connected to the second rotating rod and the third rotating rod, and the chain teeth mesh with the chain.

4. The pressure-sensing controlled pulse backwashing static cone penetration chamber simulation test device according to claim 1, characterized in that, The probe is connected to a partition, which divides the probe into two chambers: a pressurization chamber and an air blowing chamber.

5. The pressure-sensing controlled pulse backwashing static cone penetration chamber simulation test device according to claim 4, characterized in that, The air delivery and cleaning mechanism includes a limiting ring connected inside the probe rod, and multiple conduits distributed circumferentially on the partition plate. A piston disc that slides and seals inside the probe rod and abuts against the limiting ring is also connected, and the conduits pass through the piston disc.

6. The pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device according to claim 5, characterized in that, The air delivery and cleaning mechanism also includes a push rod connected to the piston disc and passing through the partition plate. A first spring is sleeved on the push rod, and the two ends of the first spring abut against the piston disc and the partition plate, respectively.

7. The pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device according to claim 6, characterized in that, The follow-up guiding mechanism includes a fixed sleeve connected to the partition plate, a tapered tube slidably mounted on the fixed sleeve, and a tapered ring connected to the end of the push rod that abuts against the tapered tube.

8. The pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device according to claim 7, characterized in that, The follow-up guiding mechanism also includes a fixing ring connected to the fixing sleeve and engaging with the tapered tube. A second spring is fitted on the fixing sleeve, and the two ends of the second spring abut against the partition and the tapered tube, respectively.

9. The pressure-sensing controlled pulse backwashing static cone penetration test chamber simulation device according to claim 4, characterized in that, An air supply channel is formed inside the probe rod, and the air supply channel is connected to the pressurization chamber.

10. A pressure-sensor-controlled pulse backwashing static cone penetration test chamber simulation method, employing the pressure-sensor-controlled pulse backwashing static cone penetration test chamber simulation device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Control the probe rod to insert into the ground through the transmission lifting mechanism, and perform corresponding tests under the action of the probe rod and probe; Step 2: When soil samples adhere to the side wall of the probe, air can be introduced into the probe; Step 3: The pressure in the pressurization chamber increases, which drives the air delivery and cleaning mechanism to move. When the pressure in the pressurization chamber reaches the set value, air is delivered to the air delivery port. Step 4: The air delivery cleaning mechanism will also drive the follow-up guide mechanism to move, thereby continuously changing the air delivery direction of the air delivery cleaning mechanism to perform air blowing stripping action on the air delivery hole.

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