Water-stopping precast well and construction method thereof

Abstract

The application provides a water-stopping prefabricated well and a construction method thereof, wherein the prefabricated well base is connected with a well shaft above, both sides of the bottom of the prefabricated well base are provided with a butt joint pipe, the end of a water pipe is inserted into the inside of the butt joint pipe, the inner surface of the butt joint pipe is provided with a first ring groove, the outer surface of the water pipe is provided with a second ring groove, the first ring groove and the second ring groove form a grouting groove, a grouting head is further arranged above the butt joint pipe, and the grouting head is in communication with the inside of the first ring groove. The first ring groove and the second ring groove are internally provided with a clasp ring for preventing extraction, the clasp ring has the effect of enhancing stability, the sealed butt joint can enhance the overall strength of the sewage pipe, and the pressure bearing capacity and the load bearing capacity thereof are improved. The design of the sealed butt joint of the inspection well and the pipe fitting can make the installation simpler and more convenient, and can also reduce the risk of water leakage during pipe connection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water-stop prefabricated well, in particular to a water-stop prefabricated well and a construction method thereof. BACKGROUND

[0002] In the construction of municipal road inspection well, the water seepage or leakage at the joint of the inspection well and the components not only affects the normal use of the inspection well and the pipeline, causes the corrosion of the inspection well body and the pipe fitting, but also causes the tensile or compressive fracture between the inspection well and the pipe fitting, resulting in the leakage between the inspection well and the pipe fitting, affecting the service life of the inspection well body and the pipe fitting, and in severe cases, causing the change of underground water quality, the deterioration of soil, and the structural damage of surrounding important buildings and other adverse effects.

[0003] In addition, during the construction, the simple cement is used for sealing between the raw inspection well and the pipe fitting, and the sealing effect is poor, resulting in the separation of the raw inspection well and the pipe fitting. SUMMARY

[0004] The main purpose of the present application is to provide a water-stop prefabricated well and a construction method thereof, which solves the problem that the visibility instrument needs to be manually cleaned, and the manual cleaning is inconvenient and easy to scratch the lens surface.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a water-stop prefabricated well, a prefabricated well seat is connected with a well shaft above, a butt joint pipe is arranged on both sides of the bottom of the prefabricated well seat, a water pipe end is inserted into the inside of the butt joint pipe, a first ring groove is arranged on the inner surface of the butt joint pipe, a second ring groove is arranged on the outer surface of the water pipe, the first ring groove and the second ring groove form a grouting groove, a grouting head is further arranged above the butt joint pipe, and the grouting head is in communication with the inside of the first ring groove.

[0006] In the preferred scheme, a limiting stop edge is arranged on the water pipe, and the limiting stop edge abuts against the end of the butt joint pipe.

[0007] In the preferred scheme, the first ring groove and the second ring groove are arranged alternately.

[0008] In the preferred scheme, a clamping ring is arranged in the second ring groove, the cross section of the clamping ring is V-shaped structure, the two pieces of the V-shaped structure have elasticity, the long side of the V-shaped structure is arranged in the second ring groove, the short side of the V-shaped structure is arranged in the first ring groove, and the end of the short side abuts against the side surface of the first ring groove.

[0009] In the preferred scheme, a plurality of through holes are arranged on the clamping ring, and the axial direction of the through holes is opposite to the radial direction of the clamping ring.

[0010] In the preferred scheme, the first ring groove and the second ring groove are injected with cement through the grouting head.

[0011] In the preferred solution, the lower end of the well shaft is provided with an outwardly extending mounting ring, the mounting ring is internally provided with a second grouting groove, the upper end of the prefabricated well base is provided with a first grouting groove at the corresponding position of the second grouting groove, and a plurality of grouting holes are arranged on the second grouting groove.

[0012] In the preferred solution, a steel mesh is arranged inside the first grouting groove and the second grouting groove, and cement is injected into the first grouting groove and the second grouting groove through the grouting holes.

[0013] In the preferred solution, the lower end of the well shaft is further provided with an outwardly extending positioning ring, and the outer surface of the positioning ring is matched with the well mouth of the upper end of the prefabricated well base.

[0014] The method comprises:

[0015] S1, excavating a well shaft, placing a prefabricated well base inside the well shaft, leveling the prefabricated well base, and installing a snap ring inside the second ring groove of the water pipe;

[0016] S2, inserting the water pipe into the connecting pipe, compressing the snap ring inside the connecting pipe, extending the snap ring inside the first ring groove, and abutting the short side of the snap ring against one side of the first ring groove;

[0017] S3, after the snap ring is snapped into the first ring groove, at least two grouting heads are installed, the two grouting heads are respectively communicated with the inside of the second ring groove and the first ring groove, high-pressure grouting pump is used to grout the inside of the second ring groove and the first ring groove, cement slurry fills the entire inside of the second ring groove and the first ring groove, and whether the cement slurry is filled can be known by observing whether the slurry is discharged from the other grouting heads;

[0018] S4, after the cement slurry is filled and grouting is completed, the grouting heads are removed and the grouting heads are sealed;

[0019] S5, the first grouting groove at the top of the prefabricated well base is placed into a steel mesh, the well shaft is connected with the prefabricated well base, and the positioning ring of the well shaft is matched with the opening at the top of the prefabricated well base;

[0020] S6, cement slurry is injected into the grouting holes, multiple grouting holes are simultaneously grouted, one grouting hole is left for exhaust, after grouting is completed, the cement slurry is shaken by a vibrating rod, and after shaking, grouting is continued, and when the slurry is discharged from all grouting holes, it indicates that grouting is completed.

[0021] The application provides a water-stopping prefabricated well and a construction method thereof, relatively solid butt-joint pipes are installed on both sides of a prefabricated well base, the butt-joint pipes are matched with water pipes, the butt-joint pipes and the water pipes are provided with first annular grooves and second annular grooves, the first annular grooves and the second annular grooves are internally grouted, the butt-joint mode can effectively prevent sewage leakage, guarantee the sealing performance of the sewage pipes and avoid causing environmental pollution. The first annular grooves and the second annular grooves internally adopt clamping rings for preventing extraction, the clamping rings have the effect of enhancing stability, the sealed butt joint can enhance the overall strength of the sewage pipes, and the pressure bearing capacity and the load bearing capacity thereof are improved. The design of the sealed butt joint of the inspection well and the pipe fitting can make installation simpler and more convenient, and can also reduce the risk of water leakage during pipe connection. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings and embodiments:

[0023] Figure 1 is a general appearance structure diagram of the application;

[0024] Figure 2 is a main view cut structure diagram of the application;

[0025] Figure 3 is an enlarged cut structure diagram of the inside of a butt-joint pipe of the application;

[0026] Figure 4 is an interlaced installation structure diagram of a first annular groove and a second annular groove of the application;

[0027] Figure 5 is a cut side structure diagram of a clamping ring of the application;

[0028] Figure 6 is a clamping ring structure diagram of the application;

[0029] Figure 7 is a disassembled structure diagram of a prefabricated well base and a well shaft of the application;

[0030] Figure 8 is an internal structure diagram of a second grouting groove of the application.

[0031] In the drawings: a prefabricated well base 1; a butt-joint pipe 101; a grouting head 102; a first annular groove 103; a first grouting groove 104; a well shaft 2; a grouting hole 201; a second grouting groove 202; a positioning ring 203; a water pipe 3; a second annular groove 301; a limiting baffle 302; a steel mesh 4; a water guide groove 5; a clamping ring 6; a through hole 601; a well lid 7. DETAILED DESCRIPTION

[0032] Embodiment 1

[0033] As Figures 1-8As shown, a water stop type prefabricated well, prefabricated well seat 1 above and well 2 connected, prefabricated well seat 1 bottom two sides are provided with butt joint pipe 101, water pipe 3 end inserted into the butt joint pipe 101 inside, the inner surface of butt joint pipe 101 is provided with first ring groove 103, the outer surface of water pipe 3 is provided with second ring groove 301, first ring groove 103 and second ring groove 301 form grouting groove, butt joint pipe 101 above is also provided with grouting head 102, grouting head 102 communicates with the inside of first ring groove 103. The prefabricated well seat 1 is installed on both sides of the relatively solid butt joint pipe 101, the butt joint pipe 101 is matched with the water pipe 3, the first ring groove 103 and the second ring groove 301 are arranged on the butt joint pipe 101 and the water pipe 3, the first ring groove 103 and the second ring groove 301 are grouted inside, this butt joint mode can effectively prevent sewage leakage, ensure the sealing performance of the sewage pipeline and avoid pollution to the environment. The first ring groove 103 and the second ring groove 301 are provided with the clamping ring 6 for preventing extraction, and the clamping ring 6 has the effect of enhancing stability.

[0034] In the preferred embodiment, the water pipe 3 is provided with a limiting stop edge 302, and the limiting stop edge 302 abuts against the end of the butt joint pipe 101. The first ring groove 103 and the second ring groove 301 are staggered. The limiting stop edge 302 abuts against the end of the butt joint pipe 101, so that the first ring groove 103 and the second ring groove 301 are staggered, as shown in the structure. Figures 3-4

[0035] In the preferred embodiment, the second ring groove 301 is provided with a clamping ring 6, the cross section of the clamping ring 6 is V-shaped structure, the two pieces of the V-shaped structure have elasticity, the long side of the V-shaped structure is arranged in the second ring groove 301, the short side of the V-shaped structure is arranged in the first ring groove 103, and the end of the short side abuts against the side of the first ring groove 103. As shown in the structure, the long side of the V-shaped structure is arranged in the second ring groove 301, the short side of the V-shaped structure is arranged in the first ring groove 103, and the end of the short side abuts against the side of the first ring groove 103, this butt joint mode can effectively prevent sewage leakage, ensure the sealing performance of the sewage pipeline and avoid pollution to the environment. The first ring groove 103 and the second ring groove 301 are provided with the clamping ring 6 for preventing extraction, and the clamping ring 6 has the effect of enhancing stability. Figure 3 The first ring groove 103 and the second ring groove 301 are arranged on the butt joint pipe 101 and the water pipe 3, and grouted inside, this butt joint mode can effectively prevent sewage leakage, ensure the sealing performance of the sewage pipeline and avoid pollution to the environment. The first ring groove 103 and the second ring groove 301 are provided with the clamping ring 6 for preventing extraction, and the clamping ring 6 has the effect of enhancing stability.

[0036]

[0037] ​​In the preferred embodiment, the retaining ring 6 has multiple through holes 601, with the axial direction of the through holes 601 being opposite to the radial direction of the retaining ring 6. The through holes 601 facilitate the entry of cement grout into the retaining ring 6, allowing the retaining ring 6 to be completely integrated into the cement grout.

[0038] In the preferred embodiment, cement is injected into the first annular groove 103 and the second annular groove 301 through the grouting head 102. At least two grouting heads 102 are used, one for grouting and the other for venting.

[0039] In the preferred embodiment, the lower end of the well shaft 2 is provided with an outwardly extending mounting ring, and the mounting ring has a second grouting groove 202 inside. The upper end of the precast well base 1 has an opening with a first grouting groove 104 at the corresponding position of the second grouting groove 202. The second grouting groove 202 has multiple grouting holes 201. The fit between the well shaft 2 and the precast well base 1 is more stable, © ensuring the sealing performance of the sewage pipeline and avoiding environmental pollution.

[0040] In the preferred embodiment, the first grouting trench 104 and the second grouting trench 202 are equipped with reinforcing mesh 4, and cement is injected into the first grouting trench 104 and the second grouting trench 202 through grouting holes 201. After the cement is injected, the overall strength of the sewage pipe is enhanced, improving its pressure resistance and load-bearing capacity. The reinforcing mesh 4 also increases the connection capacity between the two. The butt joint design makes installation simpler and more convenient, while also reducing the risk of leakage during pipe connection.

[0041] In the preferred embodiment, a protruding positioning ring 203 is also provided at the lower end of the wellbore 2, and the outer surface of the positioning ring 203 mates with the upper wellhead of the prefabricated well seat 1. The positioning ring 203 serves a positioning function.

[0042] Example 2

[0043] Further explanation in conjunction with Example 1, such as Figures 1-8 As shown in the structure, a well trench is excavated, a prefabricated well base 1 is placed inside the well trench, the prefabricated well base 1 is leveled, and a retaining ring 6 is installed inside the second annular groove 301 of the water pipe 3.

[0044] Water pipe 3 is inserted into the connecting pipe 101. The retaining ring 6 is compressed inside the connecting pipe 101. The retaining ring 6 is extended inside the first annular groove 103. The short side of the retaining ring 6 abuts against one side of the first annular groove 103.

[0045] After the retaining ring 6 is inserted into the first annular groove 103, at least two grouting heads 102 are installed. The two grouting heads 102 are connected to the second annular groove 301 and the first annular groove 103 respectively. Grouting is performed into the second annular groove 301 and the first annular groove 103 using a high-pressure grouting pump. The cement grout fills the entire second annular groove 301 and the first annular groove 103. By observing whether grout is coming out of the other grouting heads, it can be determined that the cement grout is full.

[0046] After the cement grout has filled the grouting site, the grouting head 102 is removed and sealed.

[0047] A steel mesh 4 is placed in the first grouting groove 104 at the top of the precast well base 1, and the well cylinder 2 is connected to the precast well base 1. The positioning ring 203 of the well cylinder 2 is engaged with the opening at the top of the precast well base 1.

[0048] Cement grout is injected into the grouting hole 201. Multiple grouting holes 201 are grouted simultaneously, while one grouting hole 201 is left to vent. After grouting is completed, the cement grout is vibrated with a vibrator. After vibration, grouting continues. Grouting is complete when grout emerges from all grouting holes 201.

[0049] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A prefabricated well with water-stopping properties, characterized in that: The prefabricated well base (1) is connected to the well cylinder (2) at the top. The bottom of the prefabricated well base (1) is provided with connecting pipes (101) on both sides. The end of the water pipe (3) is inserted into the connecting pipe (101). The inner surface of the connecting pipe (101) is provided with a first annular groove (103), and the outer surface of the water pipe (3) is provided with a second annular groove (301). The first annular groove (103) and the second annular groove (301) form a grouting groove. A grouting head (102) is also provided above the connecting pipe (101). The grouting head (102) is connected to the inside of the first annular groove (103). The water pipe (3) is provided with a limiting stop (302), which abuts against the end of the connecting pipe (101) for limiting; The first annular groove (103) and the second annular groove (301) are staggered; The second annular groove (301) is provided with a retaining ring (6). The cross-section of the retaining ring (6) is a V-shaped structure. The two pieces of the V-shaped structure are elastic. The long side of the V-shaped structure is located inside the second annular groove (301), and the short side of the V-shaped structure is located inside the first annular groove (103). The end of the short side abuts against the side of the first annular groove (103). The retaining ring (6) is provided with multiple through holes (601), and the axial direction of the through holes (601) is opposite to that of the radial direction of the retaining ring (6); Cement is injected into the first annular groove (103) and the second annular groove (301) through the grouting head (102); The lower end of the well shaft (2) is provided with an outwardly extending mounting ring, and the inside of the mounting ring is provided with a second grouting groove (202). The upper end of the prefabricated well seat (1) is provided with a first grouting groove (104) at the corresponding position of the second grouting groove (202), and multiple grouting holes (201) are provided on the second grouting groove (202).

2. The prefabricated water-stopping well according to claim 1, characterized in that: The first grouting tank (104) and the second grouting tank (202) are equipped with steel mesh (4), and cement is injected into the first grouting tank (104) and the second grouting tank (202) through grouting holes (201).

3. The prefabricated water-stopping well according to claim 1, characterized in that: The lower end of the wellbore (2) is also provided with an extended positioning ring (203), the outer surface of which is matched with the upper wellhead of the prefabricated well seat (1).

4. A construction method for a precast, water-stopping well according to any one of claims 1-3, characterized in that: The method includes: S1. Excavate the well trench, place the prefabricated well seat (1) inside the well trench, level the prefabricated well seat (1), and at the same time install the retaining ring (6) inside the second ring groove (301) of the water pipe (3). S2. The water pipe (3) is inserted into the connecting pipe (101), the retaining ring (6) is compressed inside the connecting pipe (101), the retaining ring (6) is extended inside the first ring groove (103), and the short side of the retaining ring (6) abuts against one side of the first ring groove (103). S3. After the retaining ring (6) is inserted into the first annular groove (103), at least two grouting heads (102) are installed. The two grouting heads (102) are connected to the second annular groove (301) and the first annular groove (103) respectively. The high-pressure grouting pump is used to grout the second annular groove (301) and the first annular groove (103). The cement grout fills the entire second annular groove (301) and the first annular groove (103). By observing whether the other grouting heads are oozing grout, it can be determined that the cement grout is full. S4. After the cement grout has filled the grouting, remove the grouting head (102) and seal the grouting head (102). S5. The first grouting groove (104) at the top of the precast well base (1) is filled with steel mesh (4), and the well cylinder (2) is connected to the precast well base (1). The positioning ring (203) of the well cylinder (2) is matched with the opening at the top of the precast well base (1). S6. Inject cement grout into the grouting hole (201). Multiple grouting holes (201) are grouted simultaneously, leaving one grouting hole (201) for venting. After grouting is completed, use a vibrator to vibrate the cement grout. After vibration, continue grouting. Grouting is complete when grout emerges from all grouting holes (201).

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