A method for processing an inspection well interface

Abstract

The present invention discloses a method for processing an inspection well interface, and relates to the technical field of inspection well installation. When the inspection well is prefabricated in the factory, a tongue and groove is reserved at the interface position, and a gap is reserved for the interface seat mortar. During construction, the inspection well area in the trench is first excavated to the design elevation, a gravel cushion layer is constructed, the inspection well is seated on the gravel cushion layer, the flatness and verticality of the inspection well are measured, and then the pipeline is installed; backfilling is started, and the soil is evenly backfilled on both sides of the pipeline and the inspection well. The backfilling is stopped when the backfill is parallel to the inspection well chamber roof. A water-swelling waterstop strip is installed at the well shaft tongue and groove, and then waterproof mortar is spread at the well chamber roof tongue and groove. The well shaft is inserted into the well chamber roof to complete the installation. A circle of closing waterproof mortar is constructed on the outside of the interface, and backfilling is continued after the mortar strength meets the requirements. The present invention solves the problem of displacement and water-stopping in the connection between the inspection well chamber and the well shaft during the installation of prefabricated inspection wells in deep foundation trenches in soft geological layers.

Description

Technical Field

[0001] The invention provides a method for processing an inspection well interface, and relates to the technical field of inspection well installation. Background Art

[0002] Normally, in order to speed up the construction progress when renovating old rainwater and sewage pipes or building new ones in urban areas, suppliers will be chosen to provide prefabricated inspection wells and shafts. The appearance quality and strength of the inspection wells prefabricated in the factory are usually higher than those of the cast-in-place inspection wells. However, the inspection wells prefabricated in the factory need to be spliced and installed on site, and their integrity is worse than that of the cast-in-place inspection wells, and they have high installation requirements. After the installation is completed, the backfill construction may disturb the shaft and cause the shaft displacement interface to crack, resulting in non-compliant installation and water seepage in the inspection well. In the long run, the backfill soil around the inspection well will be lost under the action of water, causing the road surface to collapse, which may lead to safety accidents. The repair will also cost much more than the construction cost of the new construction.

[0003] Reference CN105604094A inspection well interface sealing structure or CN210031914U assembled inspection well has achieved sealing effect, but there is still the problem of cracking at the local tongue and groove.

[0004] To this end, the present invention provides a processing method for preventing displacement and water stopping of the connection between the inspection well chamber and the wellbore during the installation of a prefabricated inspection well in a deep foundation trench in a weak geological layer.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] In order to solve the above technical problems, the inventors have come up with the technical solutions of the present invention through practice and summary. The present invention discloses that the basic concept of the technical solutions adopted by the present invention to solve the above technical problems is:

[0007] A method for processing an inspection well interface comprises the following steps:

[0008] Step 1: When prefabricating the inspection well in the factory, a uniform tongue-and-groove is reserved at the interface position, and a 15mm interface seat mortar gap is reserved;

[0009] Step 2: During construction, first excavate the area reserved for installing the inspection well in the trench to the designed elevation, lay a crushed stone cushion layer, and level it to meet the requirements;

[0010] Place the inspection well on the gravel cushion, then measure the flatness and verticality of the inspection well. Install the pipeline after it meets the requirements;

[0011] Step 3: After all the pipes are installed, start backfilling. Backfill the pipes and the inspection well in layers of 25cm thick and evenly. The height difference between the two sides should not exceed 50cm. Stop backfilling when the backfill is parallel to the top plate of the inspection well chamber.

[0012] Step 4: Install a 15mm thick water-swelling waterstop at the tongue and groove of the inspection well, then lay waterproof mortar at the tongue and groove of the well chamber roof, insert the pipe into the well chamber roof to complete the installation, and construct a circle of closing mortar on the outside of the interface. After the mortar strength of the closing mortar meets the requirements, continue to construct the backfill soil.

[0013] In a further technical solution, the interface is located at the top of the inspection well, and the interface seat slurry gap is 15 mm between the outer ends of both sides of the pipe and the tongue and groove of the inspection well.

[0014] In a further technical solution, in step 2, the bottom of the inspection well is measured by installing a detection piece;

[0015] The detection part includes bottom part one and bottom part two, which are respectively installed on both sides of the inspection well, and bottom part one is suitable for detecting verticality. A connecting ring is installed between the bottom part one and the bottom part two, and a spirit level is installed on the connecting ring.

[0016] In a further technical solution, a clamping joint is installed on both the bottom member 1 and the bottom member 2, and the clamping joint is suitable for supporting the connecting ring;

[0017] A support column is installed at the bottom of the card joint, and the support column is suitable for fitting on the outside of the inspection well.

[0018] In a further technical solution, the bottom member 1 includes a support block, and the support block is fixed to the corresponding support column;

[0019] A vertical slot is also installed in the support column, a telescopic rod is installed in the vertical slot, a transverse rod is installed on the top of the telescopic rod, a plumb line is installed on the transverse rod, and a plumb bob is installed on the side of the plumb line away from the transverse rod.

[0020] In a further technical solution, a rotating round block is installed on the top of the telescopic rod, and a transverse rod is installed in the rotating round block; a bonding plate is installed on the side of the transverse rod opposite to the inspection well, and the bonding plate is perpendicular to the transverse rod; the transverse rod is also installed with an angle plate, and the center of the angle plate is the connection position between the plumb line and the transverse rod.

[0021] In a further technical solution, a rack plate is installed in the support column of the second bottom member, and the top of the rack plate is fixed to the corresponding clamping joint;

[0022] A rotating knob is installed on the outer side of the support column. The rotating knob is suitable for extending into the support column and is installed with a rotating gear; the rotating gear is meshed with the rack plate.

[0023] Beneficial effects:

[0024] The present invention prefabricates the interface of the prefabricated inspection well into a tongue-and-groove shape to prevent disturbance and displacement during backfilling, and then installs a water-swelling waterstop strip that expands when exposed to water to ensure the water-stopping effect at the interface after disturbance, thereby preventing the backfill soil from being lost when water in the inspection well seeps out, ensuring that the road surface will not collapse and cause safety accidents, while also reducing later maintenance and saving construction costs.

[0025] One end of the connecting ring provided in the present invention is fixed in the card joint, and the other end can be moved up and down to realize the tilt test, and the dimensions can be marked on the outside of the rack plate to observe the lifting size changes and the actual level changes through the spirit level.

[0026] The rotation of the transverse rod is achieved by the rotating round block on the outside of the transverse rod. The transverse rod is welded to the bonding plate, so that in order for the bonding plate to fit the outer wall of the inspection well, it is necessary to rotate along the outer end of the rotating round block, and then the position angle of the plumb line is displayed outside the angle disk, and then the change in angle is measured to obtain the actual verticality value to determine whether it is within the actual error range. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a cross-sectional diagram of the installation of the inspection well of the present invention in the trench and the wellbore;

[0029] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0030] Figure 3 This is a top view schematic diagram of the installation of the inspection well and the wellbore of the present invention;

[0031] Figure 4 A front view of a detection member installed and positioned in an inspection well according to the present invention;

[0032] Figure 5 A cross-sectional view of the detection component installed and positioned in the inspection well of the present invention.

[0033] In the figure: 1. Pipeline; 2. Inspection well; 3. Gravel cushion; 4. Backfill soil; 5. Wellbore; 6. Waterproof mortar; 7. Water-swelling waterstop; 8. Closing mortar; 9. Tongue and groove; 10. Connecting ring; 11. Card joint; 12. Support column; 13. Support block; 14. Vertical groove; 15. Telescopic rod; 16. Horizontal rod; 17. Plumb line; 18. Plumb bob; 19. Rotating circle; 20. Angle plate; 21. Rack plate; 22. Fitting plate; 23. Rotating knob; 24. Rotating gear. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figures 1 to 3 FIG. 1 is an embodiment of the present invention, a method for processing an inspection well interface, comprising the following steps:

[0038] Step 1: When prefabricating the inspection well 2 in the factory, a uniform tongue and groove 9 is reserved at the interface position, and a 15mm interface seat mortar gap is reserved;

[0039] Step 2: During construction, first excavate the area reserved for installing the inspection well 2 in the trench to the designed elevation, lay the crushed stone cushion layer 3, and level it until it meets the requirements;

[0040] Place the inspection well 2 on the gravel cushion 3, then measure the flatness and verticality of the inspection well 2. Install the pipeline 1 after it meets the requirements;

[0041] Step 3: After the pipeline 1 is fully installed, start backfilling soil 4. Backfill soil 4 should be evenly layered with 25cm thickness on both sides of the pipeline 1 and the inspection well 2. The height difference between the two sides should not exceed 50cm. Stop backfilling when the backfill is parallel to the top plate of the inspection well 2.

[0042] Step 4: Install a 15mm thick water-swelling waterstop strip 7 at the tongue and groove 9 of the inspection well 2, then lay waterproof mortar 6 at the tongue and groove 9 of the well chamber roof, insert the pipe into the well chamber roof to complete the installation, and construct a circle of closing mortar 8 on the outside of the interface. After the mortar strength of the closing mortar 8 meets the requirements, continue to construct the backfill soil 4.

[0043] In a further technical solution, the interface is located at the top of the inspection well 2, and the interface seat slurry gap is 15 mm between the outer ends of both sides of the pipe 1 and the tongue and groove 9 of the inspection well 2.

[0044] Example 2

[0045] like Figure 4 and Figure 5 FIG. 1 is another embodiment of the present invention. Based on Example 1, in step 2, a detection piece is installed to measure the bottom of the inspection well 2.

[0046] The detection part includes bottom part one and bottom part two, which are respectively installed on both sides of the inspection well 2, and bottom part one is suitable for detecting verticality. A connecting ring 10 is installed between the bottom part one and the bottom part two, and a spirit level is installed on the connecting ring 10.

[0047] like Figure 4 As shown, a clamping joint 11 is installed on both the bottom part 1 and the bottom part 2, and the clamping joint 11 is suitable for supporting the connecting ring 10;

[0048] A support column 12 is installed at the bottom of the clamping joint 11 , and the support column 12 is suitable for being attached to the outside of the inspection well 2 .

[0049] The bottom member 1 includes a support block 13, and the support block 13 is fixed to the corresponding support column 12;

[0050] A vertical slot 14 is also installed in the support column 12, and a telescopic rod 15 is installed in the vertical slot 14. A transverse rod 16 is installed on the top of the telescopic rod 15, and a plumb line 17 is installed on the transverse rod 16. A plumb bob 18 is installed on the side of the plumb line 17 away from the transverse rod 16.

[0051] A rotating block 19 is installed on the top of the telescopic rod 15, and a transverse rod 16 is installed in the rotating block 19, that is, the transverse rod 16 can move in the rotating block 19. The transverse rod 16 is also installed with an angle plate 20, and the center of the angle plate 20 is the connection position between the plumb line 17 and the transverse rod 16.

[0052] In a further technical solution, a rack plate 21 is installed in the support column 12 of the second bottom member, and the top of the rack plate 21 is fixed to the corresponding card joint 11;

[0053] A rotating knob 23 is installed on the outer side of the support column 12 . The rotating knob 23 is adapted to extend into the support column 12 and is installed with a rotating gear 24 . The rotating gear 24 is meshed with the rack plate 21 .

[0054] The clamping joints 11 on both sides are not necessarily on the same horizontal line. When the gravel cushion layer 3 at the bottom is not laid up to standard, the horizontal state will be tilted. By relatively fixing one end of the clamping joint and moving the other end up and down, the tilt test can be realized. The dimensions can be marked on the outside of the rack plate 21 to observe the dimensional changes of the lifting and the actual horizontal changes through the spirit level.

[0055] The rotation of the transverse rod 16 is achieved by the rotating round block 19 on the outside of the transverse rod 16. The transverse rod 16 is welded to the bonding plate 22, so that in order for the bonding plate 22 to fit on the outer wall of the inspection well 2, it is necessary to rotate along the outer end of the rotating round block 19, and then the position angle of the plumb line 17 is displayed outside the angle disk 20, and then the change in angle is measured to obtain the actual verticality value to determine whether it is within the actual error range.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0057] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for processing an inspection well interface, characterized in that: The following steps are involved: Step 1: When prefabricating the inspection well (2) in the factory, a uniform tongue and groove (9) is reserved at the interface position, and a 15mm interface seat mortar gap is reserved; Step 2: During construction, first excavate the area reserved for installing the inspection well (2) in the trench to the designed elevation, and then lay a crushed stone cushion layer (3) until it is leveled to meet the requirements; Place the inspection well (2) on the gravel cushion (3), then measure the flatness and verticality of the inspection well (2), and install the pipeline (1) after it meets the requirements; The bottom of the inspection well (2) is measured by installing a detection piece; The detection member comprises a bottom member 1 and a bottom member 2, the bottom member 1 and the bottom member 2 being respectively mounted on both sides of the inspection well (2), and the bottom member 1 being suitable for detecting verticality, a connecting ring (10) being mounted between the bottom member 1 and the bottom member 2, and a level being mounted on the connecting ring (10); A card joint (11) is installed on both the bottom part 1 and the bottom part 2, and the card joint (11) is suitable for supporting the connecting ring (10); A support column (12) is installed at the bottom of the clamping joint (11), and the support column (12) is suitable for being attached to the outside of the inspection well (2); The bottom member 1 comprises a support block (13), and the support block (13) is fixed to a corresponding support column (12); A vertical slot (14) is further installed in the support column (12), a telescopic rod (15) is installed in the vertical slot (14), a transverse rod (16) is installed on the top of the telescopic rod (15), a plumb line (17) is installed on the transverse rod (16), and a plumb bob (18) is installed on the side of the plumb line (17) away from the transverse rod (16); A rotating circular block (19) is installed on the top of the telescopic rod (15), and a transverse rod (16) is installed in the rotating circular block (19); a bonding plate (22) is installed on the side of the transverse rod (16) opposite to the inspection well (2), and the bonding plate (22) is perpendicular to the transverse rod (16); The transverse rod (16) is further provided with an angle plate (20), the center of the angle plate (20) being the connection position between the plumb line (17) and the transverse rod (16); A rack plate (21) is installed in the support column (12) of the second bottom member, and the top of the rack plate (21) is fixed to the corresponding card joint (11); A rotating knob (23) is installed on the outer side of the support column (12), and the rotating knob (23) is suitable for extending into the support column (12) and is installed with a rotating gear (24); The rotating gear (24) is meshed with the rack plate (21); Step 3: After the pipeline (1) is fully installed, start backfilling (4). Backfill soil (4) should be evenly layered with 25 cm thickness on both sides of the pipeline (1) and the inspection well (2). The height difference between the two sides should not exceed 50 cm. Stop backfilling when the backfill is parallel to the top plate of the inspection well (2). Step 4: Install a 15mm thick water-expandable waterstop strip (7) at the tongue and groove (9) of the inspection well (2), then lay waterproof mortar (6) at the tongue and groove (9) of the well roof, insert the wellbore (5) into the well roof to complete the installation, and construct a circle of closing mortar (8) on the outside of the interface. After the mortar strength of the closing mortar (8) meets the requirements, continue to construct backfill soil (4).

2. A method for processing an inspection well interface according to claim 1, characterized in that: The interface is located at the top of the inspection well (2), and the interface seat slurry gap is 15 mm between the outer ends of both sides of the pipeline (1) and the tongue and groove (9) of the inspection well (2).

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