Asphalt pavement construction water seepage detection device

Abstract

The invention discloses an asphalt pavement construction water seepage detection device, and belongs to the technical field of detection, the asphalt pavement construction water seepage detection device comprises a support column, the top of the support column is connected with guide mechanisms, liquid cylinders are arranged in the guide mechanisms on the two sides in a penetrating manner, the bottoms of the liquid cylinders are connected with a top cover, the bottom of the top cover is connected with a pressure plate through a plurality of stabilizing columns, and the top of the top cover is provided with a blowing mechanism. According to the invention, sealing assembly can be completed by inserting the fitting ring, the worn fitting ring is convenient to replace, the test adaptability is improved, the control cover rotates to enable the stroke groove to slide along the triangular inclined surface of the wedge block, and at the moment, the inclined surface of the wedge block is matched to push the control cover to rise; the control cover can drive the peripheral side expansion block to drive the fixing rod and the bottom block to move upwards, the bottom block moves upwards and can be separated from the ground, at the moment, the balancing weight can be separated from the ground, the gravity completely acts on the pressing disc, the balancing weight state is rapidly switched through cooperation of the wedge block inclined face and the control cover, and the detection requirements of different road surface hardness are met.

Description

Technical Field

[0001] The invention belongs to the field of detection technology, and in particular relates to a water seepage detection device for asphalt pavement construction. Background Art

[0002] Water seepage testing during asphalt pavement construction is a crucial engineering quality inspection. It primarily assesses whether the asphalt pavement maintains adequate water resistance after construction, preventing water from penetrating the pavement structure and thus ensuring its durability and service life. The following is a detailed explanation of water seepage testing: its definition and importance. Water seepage testing uses specific methods and instruments to test the water permeability of the asphalt pavement surface. Its purpose is to ensure that the pavement meets the designed drainage standards after construction.

[0003] The Chinese invention patent with authorization announcement number CN118090561B discloses a device and method for detecting the water seepage performance of asphalt pavement, which belongs to the field of water seepage detection technology and aims to solve the problems of existing testing devices through manual timing, the use of strip-shaped sealants and manual cleaning of the road surface; it includes a base and a cylinder, the bottom of the base is provided with a drainage groove, a liquid level sensor is provided in the cylinder, and the liquid level sensor is electrically connected to an external controller; the bottom of the base is provided with a support leg; the bottom of the base is provided with a first baffle plate, and a blower is provided on the side of the first baffle plate away from the drainage groove; the bottom of the base is provided with a receiving groove, and a second baffle plate is slidably embedded in the receiving groove; the bottom of the base is also provided with a cavity, a piston is slidably embedded in the cavity, a piston rod is provided on the top of the piston, a glue outlet is penetrated through the bottom of the cavity, and a valve is provided at the glue outlet. This solution uses real-time monitoring through liquid level sensors to avoid errors during manual operation; the debris under the base can be blown out of the base through a blower, but in actual use, the seal of the enclosure in contact with the road surface depends on the cooperation of the internal sealing ring and the external glue. When the sealing ring assembly is offset, it is easy to affect the assembly accuracy and cause water to leak out of the enclosure. There is room for improvement. Summary of the Invention

[0004] The purpose of the present invention is to propose a water seepage detection device for asphalt pavement construction in order to solve the problem that the sealing of the enclosure in contact with the road surface depends on the cooperation of the internal sealing ring and the external glue. When the sealing ring assembly is offset, it is easy to affect the assembly accuracy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An asphalt pavement construction seepage detection device, including support columns, a guiding mechanism is connected to the top of the support columns, and liquid cylinders are inserted into both sides of the guiding mechanism. A top cover is connected to the bottom of the liquid cylinder, and a pressing plate is connected to the bottom of the top cover through a plurality of stabilizing columns. A purging mechanism is installed on the top of the top cover, and a pipeline is provided between the pressing plate and the top cover. One side of the pipeline has a control valve, and a sealing mechanism is connected to the bottom of the pressing plate to seal the gap between the pressing plate and the ground through the sealing mechanism; A regulating mechanism is provided on the top of the pressing plate, and a counterweight is provided on the top of the regulating mechanism. The position of the counterweight is controlled by the lifting and lowering regulation of the regulating mechanism on the top of the pressing plate.

[0006] Through the designed guiding mechanism, with the liquid cylinders arranged at corresponding positions on both sides and the cooperation with the guiding mechanism, synchronous testing can be carried out at both sides of the guiding mechanism. Through the seepage tests at different positions on both sides within the area, the adaptation effect of the test samples can be improved, and it is convenient to judge the seepage conditions at different transverse positions after the asphalt pavement construction.

[0007] As a further description of the above technical solution: The sealing mechanism includes a sealing seat, an elastic hoop is connected to the inner cavity of the sealing seat, a convex block is connected along the axis on the peripheral side of the inner cavity of the sealing seat, a plurality of stress blocks are connected along the axis on the outer peripheral side of the elastic hoop, the stress blocks and the convex blocks correspond to each other, a fitting ring is inserted into the sealing seat, the top of the fitting ring has a side wall, and a stranded wire is wound around the outer side of the side wall of the fitting ring. The stranded wire is tensioned by inserting the fitting ring into the elastic hoop for sealing; Through the designed sealing mechanism, by inserting the top stranded wire of the fitting ring into the sealing seat, at this time, the convex block in the sealing seat can contact the stress block, and the stress block can be driven to drive the elastic hoop to fully fit the stranded wire and the fitting ring inward. Through the radial contraction of the elastic hoop, the fitting ring can be pressed tightly, and the tensioning assembly of the sealing seat, the elastic hoop and the fitting ring can be completed. Through the setting of the stranded wire, the tensioning effect after being pressed can be improved, and the connection sealing stability can be improved.

[0008] As a further description of the above technical solution: The regulating mechanism includes a control cover, a plurality of expansion blocks are arranged axially around the outer peripheral side of the control cover, a fixing rod is connected to the bottom of the expansion block, and a bottom block is connected to the other end of the fixing rod. The control cover is connected to the top of the pressing plate in a liftable manner, and the contact between the bottom block and the ground is adjusted by the lifting of the control cover to adjust the counterweight of the counterweight.

[0009] Through the designed regulating mechanism, the relative height of the control cover can be adjusted by rotating the control cover. By adjusting the relative height of the control cover, the switching of the weight guidance of the counterweight to the ground can be carried out, which is convenient for switching the seepage detection state.

[0010] As a further description of the above technical solution: A plurality of wedges are axially connected around the top of the pressure plate. A plurality of stroke grooves corresponding to the wedges are axially formed around the top of the control cover. The wedges are slidably connected in the stroke grooves. The cross-sectional shape of the wedge is triangular, and the inclined surface of the triangular wedge corresponds to the top of the stroke groove. The lifting of the control cover is driven by the cooperation of the stroke groove and the wedge. Through the designed wedges and stroke grooves, the control cover rotates more stably on the inclined surface of the wedge through the stroke groove, which is convenient for improving the control stability after the control cover is lifted.

[0011] As a further description of the above technical solution: The purging mechanism includes a gland, the gland is sleeved outside the liquid cylinder, a purging bladder is connected to the bottom of the gland, the bottom end of the purging bladder is connected to the top of the top cover, and a purging pipe is communicated with the bottom of the purging bladder. The purging pipe passes through the top cover and extends to the bottom side of the pressure plate.

[0012] Through the designed purging mechanism, the gland can squeeze the purging bladder to compress the air in the purging bladder. The air flow can be ejected at high speed from the one-way air outlet valve through the purging pipe. The floating dust and debris on the ground can be removed through the ejected one-way air outlet valve.

[0013] As a further description of the above technical solution: The purging pipe is provided with a one-way air outlet valve, and the purging bladder is provided with a one-way air inlet valve. The one-way purging downward is realized through the cooperation of the one-way air outlet valve and the one-way air inlet valve.

[0014] As a further description of the above technical solution: The guiding mechanism includes a guide sleeve. The guide sleeve has a groove body, and sliding sleeves are slidably connected to both sides of the inner cavity of the groove body. A guiding lead screw is connected to one side of the sliding sleeve. The guiding lead screw is threadedly connected to a threaded groove hole formed in the side wall of the guide sleeve. Through the designed guiding mechanism, the stroke can be adjusted by rotating the guiding lead screw in the threaded groove hole, which is convenient for driving the sliding sleeve to slide in the guide sleeve to adjust the relative positions of the two liquid cylinders after the guiding lead screw moves.

[0015] As a further description of the above technical solution: The outer part of the liquid cylinder has a liquid measuring stroke, and a sealing gasket is provided between the liquid cylinder and the top cover.

[0016] As a further description of the above technical solution: A flexible pad is connected to the bottom side of the closing seat, and the flexible pad is an elastic plastic pad.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, through the designed closing mechanism, the top stranded wire is inserted into the closing seat through the fitting ring. At this time, the convex block in the closing seat can contact the force-receiving block, and the force-receiving block can drive the elastic hoop to fully fit the stranded wire and the fitting ring inward when being squeezed. Through the radial contraction of the elastic hoop, the fitting ring can be pressed tightly, completing the tension assembly of the closing seat, the elastic hoop and the fitting ring. The fitting ring can fit the gap under the ground pressure, and the elastic hoop can elastically compensate for the vibration displacement to prevent water seepage and leakage. The sealing assembly can be completed by inserting the fitting ring, which is convenient for replacing the worn fitting ring and improving the test adaptability. Rotating the control cover can make the travel groove slide along the triangular inclined plane of the wedge block. At this time, the control cover is pushed to rise through the cooperation of the inclined plane of the wedge block. The control cover can drive the peripheral expansion block, the fixed rod and the bottom block to move upward. The upward movement of the bottom block can separate it from the ground. At this time, the counterweight can be separated from the ground so that the gravity fully acts on the pressure plate. Through the cooperation of the inclined plane of the wedge block and the control cover, the counterweight state can be quickly switched to meet the detection needs of different road surface hardnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 2 proposed by the present invention Figure 1 is the enlarged structural schematic diagram of part A in; Figure 3 is the disassembled structural schematic diagram of the closing mechanism of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 4 is the bottom view structural schematic diagram of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 5 is the disassembled structural schematic diagram of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 6 is the disassembled structural schematic diagram of the regulation mechanism of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 7 is the side view structural schematic diagram of an asphalt pavement construction water seepage detection device proposed by the present invention; Figure 8 proposed by the present invention Figure 7 is the enlarged structural schematic diagram of part B in; Figure 9 is the structural schematic diagram of another angle of an asphalt pavement construction water seepage detection device proposed by the present invention.

[0019] LEGEND DESCRIPTION: 1. Support column; 2. Guide mechanism; 201. Guide sleeve; 202. Sliding sleeve; 203. Guide screw rod; 3. Purge mechanism; 301. Pressing cover; 302. Purge bladder; 4. Top cover; 5. Counterweight; 6. Regulation mechanism; 601. Control cover; 602. Stroke groove; 603. Expansion block; 604. Fixed rod; 605. Bottom block; 606. Wedge block; 7. Sealing mechanism; 701. Sealing seat; 702. Flexible pad; 703. Protrusion; 704. Elastic hoop; 705. Force-receiving block; 706. Stranded wire; 707. Fitting ring; 8. Stabilizing column; 9. Control valve; 10. Purge pipe; 11. Pressing plate; 12. Liquid cylinder. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] Please refer to Figures 1 - 9 , the present invention provides a technical solution: a device for detecting water seepage in asphalt pavement construction, including a support column 1, a guide mechanism 2 is connected to the top of the support column 1, and liquid cylinders 12 are respectively inserted into both sides of the guide mechanism 2. A top cover 4 is connected to the bottom of the liquid cylinder 12. A pressing plate 11 is connected to the bottom of the top cover 4 through a plurality of stabilizing columns 8. A purge mechanism 3 is installed on the top of the top cover 4, and a pipeline is provided between the pressing plate 11 and the top cover 4. One side of the pipeline has a control valve 9. A sealing mechanism 7 is connected to the bottom of the pressing plate 11 to seal the gap between the pressing plate 11 and the ground through the sealing mechanism 7; A regulation mechanism 6 is provided on the top of the pressing plate 11, and a counterweight 5 is provided on the top of the regulation mechanism 6. The position of the counterweight 5 is controlled by the lifting and regulation of the regulation mechanism 6 on the top of the pressing plate 11.

[0022] The liquid cylinder 12 has a liquid measuring stroke on the outside, and a sealing gasket is provided between the liquid cylinder 12 and the top cover 4.

[0023] The sealing mechanism 7 includes a sealing seat 701. An elastic hoop 704 is connected to the inner cavity of the sealing seat 701. Protrusions 703 are connected to the circumferential side of the inner cavity of the sealing seat 701 along the axis. A plurality of force-receiving blocks 705 are connected to the outer circumferential side of the elastic hoop 704 along the axis. The force-receiving blocks 705 correspond to the protrusions 703. A fitting ring 707 is inserted into the sealing seat 701. The top of the fitting ring 707 has a side wall, and a stranded wire 706 is wound around the outer side of the side wall of the fitting ring 707. The stranded wire 706 is tensioned by inserting the fitting ring 707 into the elastic hoop 704 for sealing; A flexible pad 702 is connected to the bottom side of the closed seat 701. The flexible pad 702 is an elastic plastic pad. Through the designed flexible pad 702, the sealing glue can be pre-coated in the bottom groove of the flexible pad 702 to maintain the fitting effect of the flexible pad 702.

[0024] Specifically: Through the designed closing mechanism 7, during detection, the top stranded wire 706 can be inserted into the closed seat 701 through the fitting ring 707. At this time, the convex block 703 in the closed seat 701 can contact the force-receiving block 705. When the force-receiving block 705 is squeezed, it can drive the elastic hoop 704 to fully fit the stranded wire 706 and the fitting ring 707 inward. Through the radial contraction of the elastic hoop 704, the fitting ring 707 can be pressed tightly, so that the tension assembly of the closed seat 701, the elastic hoop 704 and the fitting ring 707 can be completed. The fitting ring 707 can fit the gap under the ground pressure, and the elastic hoop 704 can elastically compensate for the vibration displacement, which is beneficial to preventing water seepage and leakage. The sealing assembly can be completed by inserting the fitting ring 707, which is convenient for replacing the worn fitting ring 707 and improving the test adaptability.

[0025] Please refer to Figures 6 - 8 , the regulation mechanism 6 includes a control cover 601. A plurality of expansion blocks 603 are arranged around the outer circumference of the control cover 601 along the axial direction. A fixed rod 604 is connected to the bottom of the expansion block 603, and the other end of the fixed rod 604 is connected to a bottom block 605. The control cover 601 is connected to the top of the pressure plate 11 in a liftable manner. By controlling the top of the control cover 601, the contact between the bottom block 605 and the ground can be adjusted to balance the weight of the counterweight block 5; A plurality of wedge blocks 606 are connected around the top of the pressure plate 11 along the axial direction. A plurality of stroke grooves 602 corresponding to the wedge blocks 606 are formed around the top of the control cover 601 along the axis. The wedge blocks 606 are slidably connected in the stroke grooves 602. The cross-sectional shape of the wedge blocks 606 is triangular, and the inclined surface of the triangle of the wedge blocks 606 corresponds to the top of the stroke grooves 602. The lift of the control cover 601 is driven by the cooperation of the stroke grooves 602 and the wedge blocks 606.

[0026] Specifically: Through the designed regulation mechanism 6, before the test, when the counterweight needs to be installed, the control cover 601 can be manually rotated. When the control cover 601 rotates, the stroke groove 602 can slide along the triangular inclined surface of the wedge block 606. At this time, the control cover 601 is pushed up by the inclined surface of the wedge block 606. The control cover 601 can drive the peripheral expansion block 603 to drive the fixed rod 604 and the bottom block 605 to move upward. When the bottom block 605 moves upward, it can be separated from the ground. At this time, the counterweight block 5 can be separated from the ground so that the gravity acts completely on the pressure plate 11. Therefore, through the cooperation of the inclined surface of the wedge block 606 and the control cover 601, the counterweight state can be quickly switched to meet the detection needs of different road surface hardnesses, and a support triangle is formed when the bottom block 605 contacts the ground, which can improve the stability of the device.

[0027] Through the designed counterweight 5, the counterweight 5 is a disc formed by combining two semi-circular counterweight parts, and the two counterweight parts on both sides of the counterweight 5 are provided with grooves for accommodating the fixing rod 604 to maintain the stability of the counterweight 5 after assembly.

[0028] Please refer to Figures 1 - 2 , the purging mechanism 3 includes a gland 301, the gland 301 is sleeved outside the liquid cylinder 12, the bottom of the gland 301 is connected with a purging bladder 302, the bottom end of the purging bladder 302 is connected to the top of the top cover 4, the bottom of the purging bladder 302 is communicated with a purging pipe 10, and the purging pipe 10 passes through the top cover 4 and extends to the bottom side of the pressure plate 11; Among them, the purging pipe 10 has a one-way air outlet valve, and the purging bladder 302 has a one-way air inlet valve, and the one-way purging downward is realized through the cooperation of the one-way air outlet valve and the one-way air inlet valve.

[0029] Specifically: Before the detection, by pressing the gland 301, the gland 301 can compress the air in the purging bladder 302 by squeezing the purging bladder 302. The air flow can be ejected from the one-way air outlet valve at a high speed through the purging pipe 10. The floating dust and debris on the ground can be removed through the ejected one-way air outlet valve. And after releasing the gland 301, the purging bladder 302 can inhale air through the one-way air inlet bladder by using the elastic force to restore to its original state. Through the designed purging bladder 302, without an external air source, manual pressing can achieve ground cleaning, avoiding impurity interference with the water seepage detection, and through the control of the one-way air flow cycle, preventing the air flow from flowing back and affecting the purging effect.

[0030] The guiding mechanism 2 includes a guide sleeve 201, the guide sleeve 201 has a groove, and both sides of the inner cavity of the groove are slidably connected with sliding sleeves 202. One side of the sliding sleeve 202 is connected with a guiding screw rod 203, and the guiding screw rod 203 is threadedly connected to the threaded groove hole opened on the side wall of the guide sleeve 201.

[0031] Specifically: Through the designed guiding mechanism 2, the synchronous testing at both sides of the guide sleeve 201 can be realized by matching with the liquid cylinders 12 arranged at the corresponding positions on both sides. And after screwing the guiding screw rod 203 to rotate in the threaded groove hole, the position of the sliding sleeve 202 in the guide sleeve 201 can be adjusted, so as to be able to finely adjust the positions of the liquid cylinders 12 on both sides, meeting the two-way rapid detection within the measurement range and improving the diversity of the detection samples.

[0032] Working principle: When in use and during detection, the top stranded wire 706 is inserted into the closed seat 701 through the fitting ring 707. At this time, the convex block 703 in the closed seat 701 contacts the force-receiving block 705. The force-receiving block 705 is squeezed to drive the elastic hoop 704 to fully fit the stranded wire 706 and the fitting ring 707 inward. The radial contraction of the elastic hoop 704 presses the fitting ring 707 tightly, completing the tensioning assembly of the closed seat 701, the elastic hoop 704, and the fitting ring 707. The fitting ring 707 fits the gap under the ground pressure, and the elastic hoop 704 elastically compensates for the vibration displacement to prevent water seepage and leakage. When a counterweight needs to be installed, the control cover 601 is manually rotated. As the control cover 601 rotates, the travel groove 602 slides along the triangular inclined surface of the wedge block 606. The inclined surface of the wedge block 606 cooperates to push the control cover 601 upward. The control cover 601 drives the peripheral expansion block 603, the fixed rod 604, and the bottom block 605 to move upward. The bottom block 605 moves upward and separates from the ground. At this time, the counterweight block 5 is separated from the ground, so that the gravity fully acts on the pressure plate 11 through the cooperation of the inclined surface of the wedge block 606 and the control cover 601. By pressing the pressure cover 301, the pressure cover 301 squeezes the purge bladder 302, compressing the air in the purge bladder 302. The air flow sprays out at high speed from the one-way outlet valve through the purge pipe 10. The floating dust and debris on the ground are removed through the sprayed one-way outlet valve. After the pressure cover 301 is released, the purge bladder 302 uses its elasticity to inhale air through the one-way intake bladder and returns to its original state.

[0033] In the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plural" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An asphalt pavement construction seepage detection device, including a support column (1), a guiding mechanism (2) is connected to the top of the support column (1), and a liquid cylinder (12) is penetrated in each of the two guiding mechanisms (2). It is characterized in that, The bottom of the liquid cylinder (12) is connected to the top cover (4). The bottom of the top cover (4) is connected to a pressure plate (11) through a plurality of stabilizing columns (8). A purging mechanism (3) is installed on the top of the top cover (4). There is a pipeline between the pressure plate (11) and the top cover (4), and a control valve (9) is provided on one side of the pipeline. The bottom of the pressure plate (11) is connected to a sealing mechanism (7) to seal the gap between the pressure plate (11) and the ground through the sealing mechanism (7). A regulating mechanism (6) is provided on the top of the pressure plate (11). A counterweight (5) is provided on the top of the regulating mechanism (6). The position of the counterweight (5) is controlled by the lifting and lowering of the regulating mechanism (6) on the top of the pressure plate (11).

2. The water seepage detection device for asphalt pavement construction according to claim 1, characterized in that, The sealing mechanism (7) includes a sealing seat (701). An elastic hoop (704) is connected to the inner cavity of the sealing seat (701). A convex block (703) is connected along the axis on the peripheral side of the inner cavity of the sealing seat (701). A plurality of stress blocks (705) are connected along the axis on the outer peripheral side of the elastic hoop (704). The stress blocks (705) correspond to the convex blocks (703). A fitting ring (707) is inserted into the sealing seat (701). The top of the fitting ring (707) has a side wall, and a stranded wire (706) is wound around the outer side of the side wall of the fitting ring (707). The stranded wire (706) is tensioned by inserting the fitting ring (707) into the elastic hoop (704) for sealing.

3. The water seepage detection device for asphalt pavement construction according to claim 1, characterized in that, The regulating mechanism (6) includes a control cover (601). A plurality of expansion blocks (603) are arranged around the outer peripheral side of the control cover (601) along the axis. A fixed rod (604) is connected to the bottom of the expansion block (603). The other end of the fixed rod (604) is connected to a bottom block (605). The control cover (601) is connected to the top of the pressure plate (11) in a liftable manner. The contact between the bottom block (605) and the ground is controlled by the top of the control cover (601) to adjust the counterweight of the counterweight (5).

4. The water seepage detection device for asphalt pavement construction according to claim 3, characterized in that, A plurality of wedge blocks (606) are connected around the top of the pressure plate (11) along the axis. A plurality of travel grooves (602) corresponding to the wedge blocks (606) are formed around the axis on the top of the control cover (601). The wedge blocks (606) are slidably connected in the travel grooves (602). The cross-sectional shape of the wedge blocks (606) is triangular, and the inclined surface of the triangle of the wedge blocks (606) corresponds to the top of the travel grooves (602). The lifting of the control cover (601) is driven by the cooperation of the travel grooves (602) and the wedge blocks (606).

5. The water seepage detection device for asphalt pavement construction according to claim 1, characterized in that, The purging mechanism (3) includes a gland (301). The gland (301) is sleeved outside the liquid cylinder (12). A purging bladder (302) is connected to the bottom of the gland (301). The bottom end of the purging bladder (302) is connected to the top of the top cover (4). A purging pipe (10) is communicated with the bottom of the purging bladder (302). The purging pipe (10) passes through the top cover (4) and extends to the bottom side of the pressure plate (11).

6. The water seepage detection device for asphalt pavement construction according to claim 5, characterized in that, The purging pipe (10) has a one-way air outlet valve, and the purging bladder (302) has a one-way air inlet valve for one-way downward purging through the cooperation of the one-way air outlet valve and the one-way air inlet valve.

7. The water seepage detection device for asphalt pavement construction according to claim 1, characterized in that, The guiding mechanism (2) includes a guiding sleeve (201), the guiding sleeve (201) has a groove body, and sliding sleeves (202) are slidably connected to both sides of the inner cavity of the groove body. One side of the sliding sleeve (202) is connected to a guiding lead screw (203), and the guiding lead screw (203) is threadedly connected to a threaded groove hole formed in the side wall of the guiding sleeve (201).

8. The water seepage detection device for asphalt pavement construction according to claim 1, characterized in that, The outside of the liquid cylinder (12) has a liquid measuring stroke, and a sealing gasket is provided between the liquid cylinder (12) and the top cover (4).

9. The water seepage detection device for asphalt pavement construction according to claim 2, characterized in that, A flexible pad (702) is connected to the bottom side of the closing seat (701), and the flexible pad (702) is an elastic plastic pad.

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