CN117760650A - Water tightness assessment device and method for sealing joints, anti-seepage and water-proof structures of hydraulic structures - Google Patents

Abstract

The invention provides a device and method for evaluating the water tightness of a seam-proof and water-proof structure of a hydraulic building, which includes a test specimen, a monitoring component and a water pressure control system; wherein, the test component includes a seam-proof and water-proof structure. structure, water inlet pipe, exhaust pipe, water outlet pressure gauge, and exhaust valve; the monitoring component includes a water delivery pipe, a water delivery pressure gauge, a flow meter, a water stop valve, and a water stop valve; the water pressure control system includes a four-way joint, Pressure water equipment, water inlet pressure gauge, connecting pipes, water storage tank. The invention also provides a method for evaluating the water tightness of the sealing joints and anti-seepage and water-proof structures of hydraulic buildings. This method can be used without damaging the anti-seepage and water-proof structures as well as the embedded or mid-buried water-proof structures. Under such circumstances, the water-stopping effect of the surface or embedded or mid-buried water-stop structure can be judged.

Description

Water tightness assessment device and method for sealing joints, anti-seepage and water-proof structures of hydraulic structures

Technical field

The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to a water tightness evaluation device and method for a sealing seam anti-seepage and water-proof structure of a hydraulic building.

Background technique

The concrete structures of hydraulic buildings require artificial joints such as settlement joints, expansion joints, and construction joints according to their structural form and characteristics as well as foundation conditions. During the construction process, joint quality control is a weak link in project construction. In recent years, water leakage and seepage problems have occurred frequently due to inadequate quality control of artificial joints, affecting structural safety. Therefore, when designing and constructing concrete structures of hydraulic buildings, effective anti-seepage and water-proof measures are usually required. Currently, commonly used anti-seepage and water-proofing methods include: embedded anti-seepage and water-proofing, mid-buried anti-seepage and water-proofing, surface anti-seepage and water-proofing, or a combination of the above. Among them, the embedded and mid-buried waterstops have problems such as difficult quality control, and are difficult to repair after leakage and damage. Therefore, surface anti-seepage waterstops are very important. Surface anti-seepage and water-proof methods currently usually adopt the measures of filling the surface with anti-seepage body and covering the surface with anti-seepage coating, which are convenient for maintenance, replacement and repair.

Although the construction technology of surface sealing, anti-seepage and water-proofing is relatively mature, after research and inspection, it is found that during the construction and operation of hydraulic buildings, the surface-sealing anti-seepage and water-proofing structure is easily damaged and the water-proofing fails, causing leakage. , endangering the safety of the building. In the process of design, construction and operation of hydraulic buildings, for surface sealing and anti-seepage and water-proofing, we must first consider whether the performance of the anti-seepage and water-proofing materials can meet the requirements of different high water pressures; secondly, we also need to consider seam sealing, anti-seepage and water-proofing Whether the structural type can meet the needs of joint deformation; in addition, in the structure of large hydraulic buildings, it is also necessary to consider efficient detection methods that adapt to large structures and cannot destroy the original structure. Therefore, it is necessary to detect and evaluate the water tightness of sealing joints and anti-seepage water-proof structures of hydraulic buildings under deformation and design high water pressure. At present, the common anti-seepage effect of anti-seepage and water-proof coatings is to use the water-impermeability test, but this test only evaluates the water-impermeability of the coating itself and cannot evaluate the anti-seepage of the anti-seepage and water-proof structures constructed on concrete structures. Effect. During normal operation, the surface or internal sealing water-stop structure bears the operating water pressure, which can be as high as 2/3Mpa and as low as 0.1Mpa. Therefore, the water tightness test must be tested when the operating water pressure is reached to be meaningful.

The primary condition for testing the anti-seepage and water-tightness of artificial seam surface sealing is: the sealing of the embedded/or mid-buried water-stop structure must be absolutely good. During the high-pressure water tightness testing process, the internal/or mid-buried water-stop structure must be The water-stop structure will never leak. However, in actual projects, 60% of embedded/or intermediate-embedded water-stop structures have leakage problems. Because there are problems with the embedded/or mid-embedded water-stop structure, it is impossible to conduct water-tightness testing on the surface sealing seams and anti-seepage water-proof structures.

Therefore, it is of great engineering value to develop a method that can perform water tightness testing on seam-sealed anti-seepage and water-proof structures.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a device for evaluating the water tightness of a seam-sealed anti-seepage and water-proof structure of a hydraulic building, which can perform water-tightness testing on the seam-sealed anti-seepage and water-proof structure.

Another object of the present invention is to provide a method for evaluating the water tightness of sealing joints, anti-seepage and water-proof structures of hydraulic buildings.

In order to achieve the above object, the present invention provides a water tightness evaluation device for sealing joints, anti-seepage and water-proof structures of hydraulic buildings, including a test specimen, a monitoring component and a water pressure control system;

Among them, the test components include the seam-sealed anti-seepage water-proof structure to be tested for water tightness, the artificial seam section to be tested, the water inlet pipe, the exhaust pipe, the water outlet pressure gauge, and the exhaust valve;

The monitoring component includes a water delivery pipe, a water delivery pressure gauge, a flow meter, and a water stop valve;

The water pressure control system includes four-way joints, water pressure equipment, pressure valves, water inlet pressure gauges, connecting pipes, and water storage tanks;

The artificial seam inner and artificial seam outer surfaces of the artificial seam section are covered with an interface agent layer;

The sealing anti-seepage and water-proof structure includes a structure formed by a top caulking sealing material and a covering surface sealing material at the top of the artificial seam section to be detected; the sealing anti-seepage and water-proof structure is enclosed by the artificial seam section form a cavity;

The inner surface of the artificial seam in the artificial seam section is covered with an interface agent layer;

The end of the water inlet pipe of the test component is bent at 60° to 150°, and the end of the water inlet pipe goes deep into the cavity; the other end of the water inlet pipe is connected to one end of the water delivery pipe of the monitoring component; the exhaust pipe One end goes deep into the cavity; the water outlet pressure gauge is installed on the part of the exhaust pipe located outside the cavity, and the exhaust valve is installed on the end of the exhaust pipe located outside the cavity;

The other end of the water delivery pipe is connected to a four-way joint provided on one side of the water pressure equipment; a water delivery pressure gauge, a flow meter, and a water stop valve are arranged on the water delivery pipe in order from the nearest to the farthest from the water inlet pipe;

The water pressure equipment is equipped with a pressure reducing pump and a boosting pump inside; the water pressure equipment is equipped with a water inlet pressure gauge; the water pressure equipment and the water storage tank are connected through a connecting pipe.

As mentioned above, the test assembly further includes a middle-embedded sealing seam anti-seepage and water-proofing located in the middle of the artificial seam or an embedded seam-sealing anti-seepage and water-proofing located at the bottom of the artificial seam.

As mentioned above, when the two ends of the artificial seam section to be tested are open, the seam sealing anti-seepage and water-proof structure to be tested for water tightness is filled with supporting materials at both ends of the artificial seam section to be tested.

As mentioned above, 2/3 of the range of the pressure gauge is less than or equal to the design pressure.

As mentioned above, the material of the interface agent layer is an epoxy interface agent; the material of the surface sealing material is one or more of polyurea, polyurethane, organic silicon, and fluorosilicone polymer; the top inlaid material is The material of the seam sealing material is one or more of polyurea, polyurethane, silicone, fluorosilicone polymer, elastic epoxy cement, elastic epoxy mortar, elastic polyurethane mortar, and elastic polyurea mortar.

The invention also provides a method for evaluating the water tightness of the sealing joints and anti-seepage and water-proof structures of hydraulic buildings, which includes the following steps:

1) On the outer surface of the artificial joints and the inner side of the artificial joints of the hydraulic structure, remove the original polysulfide sealant layer or polyethylene foam layer to the inner side of the artificial joints to prevent leakage or water. Buried sealing joints are anti-seepage and water-proof;

2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint;

3) Select the artificial seam section to be detected, and embed sponge or foam as supporting material at both ends of the artificial seam section to be detected;

4) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall inside the artificial seam; then apply interface agent on the inside of the artificial seam and the surface outside the artificial seam to form an interface agent layer, and apply it on the artificial seam. The top of the inside of the seam is filled with the top caulking sealing material, and then covered with the surface sealing material, thereby forming a closed cavity to make the above-mentioned test component in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building;

5) Install the monitoring component and water pressure control system in the water tightness evaluation device of the above-mentioned sealing, anti-seepage and water-proof structure of the hydraulic structure with the test components in step 4) to form a complete water-tight sealing, anti-seepage and water-proof structure. sexual assessment device;

6) Open the exhaust valve at the exhaust pipe mouth, and inject the water in the water storage tank into the closed cavity in step 4) through the connecting pipe, pressurized water equipment, water pipe, and water inlet pipe until the water comes out of the exhaust pipe, then close it Open the valve at the outlet of the exhaust pipe and open the valve on the pressure gauge on the exhaust pipe so that the pressure gauge begins to indicate the pressure. Start injecting water and increasing the pressure step by step until the design water pressure is reached;

7) Close the water stop valve, maintain the pressure, and judge the water tightness: a) When the pressure drops sharply and there is no water seepage in the surface sealing anti-seepage and water-stopping structure, it means that the embedded seam-sealing anti-seepage and water-stopping structure or the middle There are leakage channels in the buried seam-sealed anti-seepage and water-stop structure; b) If there is water seepage in the surface-sealed anti-seepage and water-stop structure, it is judged that there are leakage channels in the surface-sealed anti-seepage and water-stop structure, and the water tightness is unqualified; c) When there is no water seepage throughout the pressurization process and when the design operating water pressure is reached and the design operating water pressure is maintained for more than 30 minutes, it is judged that there is no leakage channel in the surface sealing anti-seepage and water-proof structure, and the water tightness is qualified.

As mentioned above, replace step 4) with step 4a): use epoxy glue to fix the water inlet pipe and exhaust pipe to different positions on the side walls of the artificial seam; then paint the interface on both sides and the top of the artificial seam Apply epoxy glue on the internally embedded sealing seams to prevent seepage and water-proofing or the middle-buried sealing seams to prevent seepage and water-proofing, and seal the internally buried seams to prevent seepage and water-proofing or the intermediate-embedded sealing seams to prevent seepage and water-proofing; and The surface is filled with a caulking sealing material, and then covered with the surface sealing material, thereby forming a closed cavity, and the above-mentioned test component in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building is made.

The invention also provides a method for evaluating the water tightness of the sealing joints and anti-seepage and water-proof structures of hydraulic buildings, which includes the following steps:

1) According to the reinforcement and marking of hydraulic structures without artificial joints, pour a concrete platform with the same reinforcement and marking, with a size of 1700mm long × 800mm wide × 450mm high; open a concrete platform with a length of 800mm and a width of 800mm. W1, a groove with a depth of 50mm; W1 is the same width as the artificial seam;

2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint;

3) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall inside the artificial seam; then apply an interface agent on the inside of the artificial seam and the outside surface of the artificial seam to form an interface agent layer, and then apply the interface agent on the artificial seam. The top of the inside of the seam is filled with the top caulking sealing material, and then the surface sealing material is covered to form a closed cavity, and the above-mentioned test component in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building is made. ;

4) Install the monitoring component and water pressure control system in the water tightness evaluation device of the above-mentioned sealing, anti-seepage and water-proof structure of the hydraulic building with the test components in step 3) to form a complete water-tight sealing, anti-seepage and water-proof structure. sexual assessment device;

5) Open the exhaust valve at the exhaust pipe, and inject the water in the water storage tank into the closed cavity in step 3) through the connecting pipe, pressurized water equipment, water pipe, and water inlet pipe until the exhaust pipe comes out of the water, then close it. Open the valve at the outlet of the exhaust pipe and open the valve on the pressure gauge on the exhaust pipe so that the pressure gauge begins to indicate the pressure. Start injecting water and increasing the pressure step by step until the design water pressure is reached;

6) Close the water stop valve, maintain the pressure, and judge the water tightness: a) If there is water seepage in the surface sealing anti-seepage water-stop structure, it is judged that there is a leakage channel in the surface sealing anti-seepage water-stop structure, and the water tightness is not good. Qualified; b) When there is no water seepage during the entire pressurization process and when the design operating water pressure is reached, and the operating water pressure is maintained according to the design for more than 30 minutes, it is judged that there is no leakage channel in the surface sealing anti-seepage and water-proof structure, and the water tightness is qualified .

The beneficial effects of the present invention are:

The invention provides a device and an evaluation method for evaluating the water tightness of a sealing joint and anti-seepage and water-proof structure of a hydraulic building. The device can be used without damaging the anti-seepage and water-proof structure and the embedded or mid-buried water-proof structure. Determine the water-stopping effect of the embedded or mid-embedded water-stop structure.

Description of the drawings

Figure 1 is a schematic side view of an artificial seam according to the first preferred embodiment of the device for evaluating the water tightness of a seam-sealed, anti-seepage and water-proof structure of a hydraulic building provided by the present invention.

Figure 2 is a schematic cross-sectional view of the artificial seam passing through the water inlet pipe section in Figure 1.

Figure 3 is a schematic cross-sectional view of the artificial seam passing through the water inlet pipe section of the second preferred embodiment.

Figure 4 is a schematic cross-sectional view of the artificial seam passing through the water inlet pipe section of the third preferred embodiment.

Figure 5 is a schematic side view of the artificial seams of the fourth preferred embodiment of the water tightness evaluation device for sealing seams, anti-seepage and water-proof structures of hydraulic structures provided by the present invention.

Figure 6 is a schematic cross-sectional view of the artificial seam passing through the water inlet pipe section in Figure 5.

Reference signs

11: Sealing, seepage-proof and water-proof structure; 111: Cavity; 112: Surface sealing, seepage-proof and water-proofing; 113: Concrete components; 114: Support materials embedded at both ends; 115: Support materials embedded at the top; 116: Inner Buried sealing anti-seepage and water-proofing; 117: Middle buried seam sealing anti-seepage and water-proofing; 118: Epoxy cement; 119: Interface agent layer; 12: Water inlet pipe; 13: Exhaust pipe; 131: Outlet water pressure gauge; 132: Exhaust valve; 21: Water pipe; 22: Water pressure gauge; 23: Flow meter; 24: Water stop valve; 31: Four-way joint; 32: Pressurized water equipment; 321: Pressure reducing pump; 322: Increase Pressure pump; 33: Water inlet pressure gauge; 34: Connecting pipe; 35: Water storage tank.

Detailed ways

The embodiments of the present invention will be described in detail and completely below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Artificial joints in concrete structures of hydraulic buildings are usually formed by sandwiching adjacent concrete components. Artificial joints are also called expansion joints and are mainly used to ensure the expansion and contraction deformation allowance of concrete components. Artificial joints require the use of water-stop structures to prevent seepage. Commonly used water-stop structures include water-stop copper plates (also called copper water-stops), rubber water-stops and other products. When the above-mentioned water stops are buried at the bottom of the artificial joints, they are called embedded types. Waterstop or embedded seam sealing is anti-seepage and water-proof. If it is buried in the middle of the artificial seam, it is called mid-buried waterstop or mid-buried seam sealing is anti-seepage and water-proof.

An expansion joint of a tunnel in a hydraulic construction can be up to seven or eight meters long, and an expansion joint on a box culvert can be up to sixteen or seventeen meters long. If the whole joint is inspected, on the one hand, the artificial joints will be too long and no leakage can be found. On the other hand, there is the problem that the watertightness of other parts of the entire artificial seam cannot be guaranteed to be good. Based on the above two problems, it is necessary to carry out zoning inspection on the artificial seams. The zoning inspection is to form the seams into multiple cavities, and use pressurized water equipment to conduct water tightness testing.

The inner side of the artificial joint mentioned in the present invention refers to the part sandwiched between two adjacent concrete components, and the outer surface of the artificial joint refers to the surface outside the artificial joint that directly contacts the water body.

The material of the interface agent layer used is an epoxy interface agent; the material of the surface sealing material is one or more of polyurea, polyurethane, organic silicon, and fluorosilicone polymer; the material of the top caulking sealing material is One or more of polyurea, polyurethane, silicone, fluorosilicone polymer, elastic epoxy cement, elastic epoxy mortar, elastic polyurethane mortar, and elastic polyurea mortar. All the above materials can be purchased directly commercially.

Example 1

A device for evaluating the water tightness of sealing joints, anti-seepage and water-proof structures of hydraulic buildings, as shown in Figure 1, including test specimens, monitoring components and a water pressure control system;

Among them, the test component includes the sealing anti-seepage and water-proof structure 11 whose water tightness is to be tested, the artificial seam section to be tested, the water inlet pipe 12, the exhaust pipe 13, the water outlet pressure gauge 131, and the exhaust valve 132;

The monitoring component includes a water delivery pipe 21, a water delivery pressure gauge 22, a flow meter 23, and a water stop valve 24;

The water pressure control system includes a four-way joint 31, a water pressure device 32, a water inlet pressure gauge 33, a connecting pipe 34, and a water storage tank 35;

In the embodiment, the seam sealing anti-seepage and water-proof structure 11 includes the top caulking sealing material 114 at the top of the artificial seam section to be detected, the covering surface sealing material 115 and the embedded seam anti-seepage and water-stopping structure 116; Both ends of the seam section are open, so it is necessary to add two-end filling support materials 114 at both ends of the artificial seam section to be detected, thereby forming a cavity 111 in the artificial seam section to be detected. The inner surface of the artificial seam and the outer surface of the artificial seam of the artificial seam section are covered with an interface agent layer 119. The interface agent is used to improve the bonding strength with the surface sealing seam anti-seepage and water-proofing, top filling support material or both ends filling support material. , the material of the interface agent should be epoxy interface agent.

The end of the water inlet pipe 12 of the test assembly is bent at 90°, and the end of the water inlet pipe 12 goes deep into the cavity 111; as shown in Figure 2, a cross-section of the artificial seam, it can be seen that the embedded seam sealing anti- The shape of the water stopper 116 is a commercial copper waterstop.

The other end of the water inlet pipe 12 is connected to one end of the water delivery pipe 21 of the monitoring component; one end of the exhaust pipe 13 goes deep into the cavity 111; a water outlet pressure gauge 131 is installed on the part of the exhaust pipe 13 outside the cavity. , an exhaust valve is installed at the end of the exhaust pipe 13 located outside the cavity;

The other end of the water pipe 21 is connected to the four-way joint 31 provided on one side of the water pressure equipment; a water pressure gauge 22, a flow meter 23, and a water stop valve are arranged on the water pipe 21 in order from the nearest to the water inlet pipe 12. twenty four;

A pressure reducing pump 321 and a boosting pump 322 are provided inside the water pressure equipment; a water inlet pressure gauge 33 is provided on the water pressure equipment; the water pressure equipment and the water storage tank 35 are connected through a connecting pipe 34 .

Example 2

The difference between this embodiment and Embodiment 1 lies in the use of a middle-buried sealing seam to prevent seepage and water-proofing. Figure 3 is a schematic cross-sectional view of an artificial seam with a middle-buried sealing seam to prevent seepage and water-proofing 117. The exhaust pipe and water outlet The pressure gauge, exhaust valve, monitoring components and water pressure control system are the same as those in Embodiment 1.

Example 3

The watertightness evaluation method for the embedded seam-sealed anti-seepage and water-proof structure of Example 1 or the embedded seam-sealed anti-seepage and water-proof structure of Example 2 includes the following steps:

1) At the top of the artificial joints of the hydraulic structure, remove the original polysulfide sealant barrier or polyethylene foam barrier to the embedded sealing seam anti-seepage water-proof structure or the middle-buried seam sealing anti-seepage barrier. water structure;

2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint;

3) Fill the artificial seams with sponge or foam as supporting material;

4) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall of the artificial seam; then apply interface agent on both sides and top of the artificial seam to form an interface agent layer, and then apply the interface agent on the inside of the artificial seam. The top is filled with the top caulking sealing material, and then the surface sealing material is covered to form a closed cavity, and is made into a test component in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building as mentioned above;

6) Install the monitoring components and water pressure control system in the water tightness evaluation device of the above-mentioned sealing, anti-seepage and water-proof structure of hydraulic structures with the test components in step 5) to form a complete water-tight sealing, anti-seepage and water-proof structure. sexual assessment device;

7) Inject the water in the water storage tank into the closed cavity in step 4) through the connecting pipe, water pressure equipment, water delivery pipe, and water inlet pipe to the designed water pressure;

8) Open the pressure maintaining valve, maintain the pressure, and judge the water tightness: a) When the pressure drops sharply and there is no water seepage in the surface sealing anti-seepage and water-proof structure, it means that the embedded seam anti-seepage and water-stopping structure or the middle There are leakage channels in the buried seam-sealed anti-seepage and water-stop structure; b) If there is water seepage in the surface-sealed anti-seepage and water-stop structure, it is judged that there are leakage channels in the surface-sealed anti-seepage and water-stop structure, and the water tightness is unqualified; c) When there is no water seepage throughout the pressurization process and when the design operating water pressure is reached and the design operating water pressure is maintained for more than 30 minutes, it is judged that there is no leakage channel in the surface sealing anti-seepage and water-proof structure, and the water tightness is qualified.

It can be seen that after forming a surface sealing anti-seepage water-proof structure with good performance on the surface of the artificial seam, and then using a pressure water test, the water tightness of the internal water-stopping structure (embedded or middle-buried) can be tested. If the water-tightness of the internal water-stopping structure is not good, but the surface-sealing anti-seepage and water-stopping structure is qualified, the surface-sealing anti-seepage and water-stopping structure can be used without dismantling and reprocessing.

Example 4

The difference between this embodiment and Embodiment 2 is that there is epoxy cement 118 on the anti-seepage water of the middle-buried sealing seam, as shown in Figure 4 . The method of Embodiment 3 can be used to detect the water seepage of the surface sealing anti-seepage and water-proof structure.

Example 5

Since the existing completed artificial joints are not pre-set with water inlet pipes and exhaust pipes, the water tightness test of the artificial joints cannot be directly performed. Therefore, according to the reinforcement and marking of the hydraulic building of the artificial joints to be evaluated for water tightness, pouring A concrete platform with the same reinforcement and markings. The size of the concrete platform is 1700mm long x 800mm wide x 450mm high. Open a trough with a length of 800mm, a width W1 and a depth of 50mm on the concrete platform. W1 is the same as the width of the artificial joint. Use Used to evaluate the watertightness of artificial joints.

The water tightness evaluation device for the sealing, anti-seepage and water-proof structure of the entire hydraulic building is shown in Figure 5, including test specimens, monitoring components and water pressure control systems;

Among them, the test component includes a sealing anti-seepage water-proof structure 11 to be tested for water tightness, a water inlet pipe 12, an exhaust pipe 13, a water outlet pressure gauge 131, and an exhaust valve 132;

The monitoring component includes a water delivery pipe 21, a water delivery pressure gauge 22, a flow meter 23, and a water stop valve 24;

The water pressure control system includes a four-way joint 31, a water pressure device 32, a water inlet pressure gauge 33, a connecting pipe 34, and a water storage tank 35;

Since the artificial joint to be detected is a groove opened on the concrete platform, it does not need to be filled with support materials at both ends. Therefore, the sealing anti-seepage and water-proof structure 11 only needs to be filled with the support material 115 at the top and then covered with the surface sealing material 112 to form a structure; The seam sealing anti-seepage and water-proof structure and the artificial seam section to be detected form a cavity 111, and there is no embedded water stop or middle-buried water stop.

The end of the water inlet pipe 12 of the test assembly is bent at 90°, and the end of the water inlet pipe 12 penetrates deep into the cavity 111; as shown in Figure 6, a cross-sectional view of the artificial seam;

The other end of the water inlet pipe 12 is connected to one end of the water delivery pipe 21 of the monitoring component; one end of the exhaust pipe 13 goes deep into the cavity 111; a water outlet pressure gauge 131 is installed on the part of the exhaust pipe 13 outside the cavity. , an exhaust valve is installed at the end of the exhaust pipe 13 located outside the cavity;

The other end of the water pipe 21 is connected to the four-way joint 31 provided on one side of the water pressure equipment; a water pressure gauge 22, a flow meter 23, and a water stop valve are arranged on the water pipe 21 in order from the nearest to the water inlet pipe 12. twenty four;

A pressure reducing pump 321 and a boosting pump 322 are provided inside the water pressure equipment; a water inlet pressure gauge 33 is provided on the water pressure equipment; the water pressure equipment and the water storage tank 35 are connected through a connecting pipe 34 .

Example 5

The water tightness evaluation method for the artificial seam sealing anti-seepage water-proof structure of the concrete platform in Example 4 includes the following steps:

1) According to the reinforcement and marking of the artificially jointed hydraulic structure, pour a concrete platform with the same reinforcement and marking, with a size of 1700mm long × 800mm wide × 450mm high; open a concrete platform with a length of 800mm and a width of W1 , a groove with a depth of 50mm; W1 is the same width as the artificial seam;

2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint;

3) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall inside the artificial seam; then apply an interface agent on the inside of the artificial seam and the outside surface of the artificial seam to form an interface agent layer, and then apply the interface agent on the artificial seam. The top of the inside of the seam is caulked with top caulking sealing material, and then covered with surface sealing material to form a closed cavity.

4) Install the monitoring components and water pressure control system in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building with the test components in step 4) to form a complete water-tightness assessment of the sealing, anti-seepage and water-proof structure. device;

5) Open the exhaust valve at the exhaust pipe, and inject the water in the water tank into the closed cavity in step 4) through the connecting pipe, pressurized water equipment, water pipe, and water inlet pipe until the exhaust pipe comes out of the water, then close it. Open the valve at the outlet of the exhaust pipe and open the valve on the pressure gauge on the exhaust pipe so that the pressure gauge begins to indicate the pressure. Start injecting water and increasing the pressure step by step until the design water pressure is reached;

6) Close the water-stop valve, maintain the pressure, and judge the water-tightness: a) If water seepage is found in the surface-sealed anti-seepage water-stopping structure by visual observation, it is judged that there is a leakage channel in the surface-sealed anti-seepage water-stopping structure and the water-tightness is unqualified; b) When there is no water seepage during the entire pressurization process and when the design operating water pressure is reached and the pressure is maintained at the design operating water pressure for more than 30 minutes, it is judged that there is no leakage channel in the surface-sealed anti-seepage water-stopping structure and the water-tightness is qualified.

It can be seen from the above embodiments that in the present invention, the water inlet pipe and the exhaust pipe are pre-buried in the closed cavity formed by the artificial seam, which has the effect of not damaging the original structure and being firm. If the pre-embedded method is not used, during the pressurized water tightness test, the interface between the water inlet pipe buried from behind and the sealing anti-seepage and water-proof structure will be damaged, causing the water tightness test to fail. Therefore, the water-tightness evaluation device and evaluation method of the seam-sealed anti-seepage and water-proof structure of a hydraulic building provided by the present invention can simulate the conditions during operation to evaluate the water-tightness of the seam-sealed anti-seepage and water-proof structure.

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

Claims (8)

1. A water-tightness evaluation device for seam-proof and anti-seepage water-proof structures of hydraulic buildings, which is characterized in that it includes a test specimen, a monitoring component and a water pressure control system; Among them, the test components include the seam-sealed anti-seepage water-proof structure to be tested for water tightness, the artificial seam section to be tested, the water inlet pipe, the exhaust pipe, the water outlet pressure gauge, and the exhaust valve; The monitoring component includes a water delivery pipe, a water delivery pressure gauge, a flow meter, and a water stop valve; The water pressure control system includes four-way joints, water pressure equipment, pressure valves, water inlet pressure gauges, connecting pipes, and water storage tanks; The artificial seam inner and artificial seam outer surfaces of the artificial seam section are covered with an interface agent layer; The sealing anti-seepage and water-proof structure includes a structure formed by a top caulking sealing material and a covering surface sealing material at the top of the artificial seam section to be detected; the sealing anti-seepage and water-proof structure is enclosed by the artificial seam section form a cavity; The end of the water inlet pipe of the test component is bent at 60° to 150°, and the end of the water inlet pipe goes deep into the cavity; the other end of the water inlet pipe is connected to one end of the water delivery pipe of the monitoring component; the exhaust pipe One end goes deep into the cavity; the water outlet pressure gauge is installed on the part of the exhaust pipe located outside the cavity, and the exhaust valve is installed on the end of the exhaust pipe located outside the cavity; The other end of the water delivery pipe is connected to a four-way joint provided on one side of the water pressure equipment; a water delivery pressure gauge, a flow meter, and a water stop valve are arranged on the water delivery pipe in order from the nearest to the farthest from the water inlet pipe; The water pressure equipment is equipped with a pressure reducing pump and a boosting pump inside; the water pressure equipment is equipped with a water inlet pressure gauge; the water pressure equipment and the water storage tank are connected through a connecting pipe. 2. The water-tightness evaluation device of the seam-sealing anti-seepage and water-proof structure of a hydraulic building as claimed in claim 1, wherein the water-tightness of the seam-sealing anti-seepage and water-proof structure to be tested further includes an artificial seam located at an artificial seam. The middle buried seam sealing is anti-seepage and water-proof, or the embedded seam sealing at the bottom of the artificial seam is anti-seepage and water-proof. 3. The water-tightness evaluation device of the seam-proof and anti-seepage water-proof structure of a hydraulic building as claimed in claim 1, characterized in that the test component further detects when both ends of the artificial seam section to be detected are open. Both ends of the artificial seam section to be detected are embedded with supporting materials. 4. The water-tightness evaluation device for sealing joints and anti-seepage and water-proof structures of hydraulic structures according to claim 1, characterized in that 2/3 of the range of the pressure gauge is less than or equal to the design pressure. 5. The water tightness evaluation device of the sealing and anti-seepage water-proof structure of the hydraulic building as claimed in claim 1, characterized in that the material of the interface agent layer is an epoxy interface agent; the surface sealing material The material is one or more of polyurea, polyurethane, silicone, and fluorosilicone polymer; the top caulking sealing material is made of polyurea, polyurethane, silicone, fluorosilicone polymer, elastic epoxy cement, One or more types of elastic epoxy mortar, elastic polyurethane mortar, and elastic polyurea mortar. 6. A method for evaluating the water tightness of sealing and anti-seepage water-proof structures of hydraulic buildings, which is characterized by including the following steps: 1) On the outer surface of the artificial joints and the inner side of the artificial joints of the hydraulic structure, remove the original polysulfide sealant layer or polyethylene foam layer to the inner side of the artificial joints to prevent leakage or water. Buried sealing joints are anti-seepage and water-proof; 2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint; 3) Select the artificial seam section to be detected, and embed sponge or foam as supporting material at both ends of the artificial seam section to be detected; 4) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall inside the artificial seam; then apply interface agent on the inside and outside surfaces of the artificial seam to form an interface agent layer, and then apply the interface agent on the artificial seam. The top of the inside of the seam is caulked with the top caulking sealing material, and then covered with the surface sealing material, thereby forming a closed cavity, and the sealing seam of the hydraulic building as claimed in any one of claims 1 to 5 is made into an anti-seepage and water-proof material. Test components in structural watertightness assessment devices; 5) Install the monitoring component and the water pressure control system in the water tightness evaluation device of the sealing and anti-seepage structure of the hydraulic building according to claim 1 with the test components in step 4) to form a complete sealing and anti-seepage Water tightness assessment device for water-stop structures; 6) Open the exhaust valve at the exhaust pipe mouth, and inject the water in the water storage tank into the closed cavity in step 4) through the connecting pipe, pressurized water equipment, water pipe, and water inlet pipe until the water comes out of the exhaust pipe, then close it Open the exhaust valve at the exhaust pipe mouth, open the valve of the pressure gauge on the exhaust pipe, let the pressure gauge start to indicate the pressure, start filling water and pressurize step by step until the design water pressure; 7) Close the water stop valve, maintain the pressure, and judge the water tightness: a) When the pressure drops sharply and there is no water seepage in the surface sealing anti-seepage and water-stopping structure, it means that the embedded seam-sealing anti-seepage and water-stopping structure or the middle There are leakage channels in the buried seam-sealed anti-seepage and water-stop structure; b) If there is water seepage in the surface-sealed anti-seepage and water-stop structure, it is judged that there are leakage channels in the surface-sealed anti-seepage and water-stop structure, and the water tightness is unqualified; c) When there is no water seepage throughout the pressurization process and when the design operating water pressure is reached and the design operating water pressure is maintained for more than 30 minutes, it is judged that there is no leakage channel in the surface sealing anti-seepage and water-proof structure, and the water tightness is qualified. 7. The water tightness evaluation method of the sealing and anti-seepage water-proof structure of the hydraulic building as claimed in claim 6, characterized in that step 4) is replaced by step 4a): using epoxy cement, separate the water inlet pipe and The exhaust pipe is fixed at different positions on the side wall of the artificial seam; then apply interface agent on both sides and the top of the artificial seam, and apply a ring on the internally embedded seam sealant to prevent seepage and water proofing or the middle buried seam sealant to prevent seepage and waterproof water. Oxygen cement seals the embedded seams to prevent seepage and water or the buried seams to prevent seepage and water; and fills the surface with caulking sealing materials, and then covers the surface sealing materials to form a closed cavity, making the following: The test component in the water tightness evaluation device of the sealing, anti-seepage and water-proof structure of the hydraulic building according to claim 1. 8. A method for evaluating the water tightness of seam-proof and anti-seepage water-proof structures of hydraulic buildings, which is characterized by including the following steps: 1) According to the reinforcement and marking of the artificially jointed hydraulic structure, pour a concrete platform with the same reinforcement and marking. The size of the concrete platform is 1700mm long × 800mm wide × 450mm high; open a concrete platform with a length of 800mm, Groove with width W1 and depth 50mm; W1 is the same width as the artificial seam; 2) Clean the inner side of the artificial joint, polish the outer surface of the artificial joint, and use epoxy mortar, cement mortar or epoxy cement to repair and level the defects on the outer surface of the artificial joint; 3) Use epoxy glue to fix the water inlet pipe and exhaust pipe at different positions on the side wall inside the artificial seam; then apply an interface agent on the inside of the artificial seam and the outside surface of the artificial seam to form an interface agent layer, and then apply the interface agent on the artificial seam. The top of the inner side of the seam is caulked with the top caulking sealing material, and then covered with the surface sealing material, thereby forming a closed cavity, and the sealing seam of the hydraulic building as claimed in any one of claims 1 to 5 is made into an anti-seepage and water-proof material. Test components in structural watertightness assessment devices; 4) Install the monitoring component and the water pressure control system in the water tightness evaluation device of the sealing and anti-seepage structure of the hydraulic building according to claim 1 with the test components in step 3) to form a complete sealing and anti-seepage Water tightness assessment device for water-stop structures; 5) Open the exhaust valve at the exhaust pipe, and inject the water in the water tank into the closed cavity in step 4) through the connecting pipe, pressurized water equipment, water pipe, and water inlet pipe until the exhaust pipe comes out of the water, then close it. Open the valve at the outlet of the exhaust pipe and open the valve on the pressure gauge on the exhaust pipe so that the pressure gauge begins to indicate the pressure. Start injecting water and increasing the pressure step by step until the design water pressure is reached; 6) Close the water stop valve, maintain the pressure, and judge the water tightness: a) If there is water seepage in the surface sealing anti-seepage water-stop structure, it is judged that there is a leakage channel in the surface sealing anti-seepage water-stop structure, and the water tightness is not good. Qualified; b) When there is no water seepage during the entire pressurization process and when the design operating water pressure is reached, and the operating water pressure is maintained according to the design for more than 30 minutes, it is judged that there is no leakage channel in the surface sealing anti-seepage and water-proof structure, and the water tightness is qualified .