Pipe jacking hole water stop structure

Abstract

The utility model provides a kind of pipe jacking hole water stop structure, one end of steel sleeve is resisted and touches in the inner wall of one side corresponding to jacking direction of working well, the other end is connected with the ring plate of outwardly folding, to form the annular pouring groove corresponding to pipe jacking outer wall, concrete ring is poured in annular pouring groove;Anchor rod is inserted into external soil after corresponding through ring plate, concrete ring and the well wall of working well, grouting hole is equipped in the part of anchor rod corresponding external soil, to consolidate external soil by grouting;The inner diameter of first sealing ring is compatible with the outer diameter of machine head, the perforation corresponding anchor rod is equipped on first sealing ring, anchor rod is screw-threaded connection with locking nut after passing through perforation, first sealing rubber ring is equipped between first sealing ring and ring plate.A anchor rod is inserted into external soil and grouting consolidation after corresponding through ring plate, concrete ring, and each component is firmly connected by locking nut simultaneously, the connection stability of the whole water stop structure and working well and surrounding soil is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe jacking construction, specifically relating to a water-stopping structure for pipe jacking openings. Background Technology

[0002] During pipe jacking construction, sealing the opening is a crucial step when the pipe is jacked from the working shaft. Ineffective sealing at the opening can allow groundwater and sediment to seep into the working shaft, disrupting construction and potentially causing safety accidents such as shaft collapse. Existing pipe jacking opening sealing structures have several shortcomings. For example, the connection between some sealing structures and the working shaft and pipe is not secure enough, making them prone to loosening during jacking and causing sealing failure; some sealing structures have limited sealing performance and cannot effectively prevent the infiltration of high-pressure groundwater or sediment.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and to provide a water-stopping structure for the opening of a jacking pipe.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A water-stopping structure for pipe jacking openings, comprising: A steel sleeve, one end of which abuts against the inner wall of the working well in the direction of jacking, and the other end is connected to an outwardly folded ring plate to form an annular casting groove corresponding to the outer wall of the jacking pipe, and a concrete ring is cast in the annular casting groove. An anchor bolt, which passes through the ring plate, the concrete ring and the well wall of the working well and extends into the external soil, has grouting holes in the part of the anchor bolt corresponding to the external soil, so as to consolidate the external soil by grouting; The first sealing ring has an inner diameter that matches the outer diameter of the machine head. A corresponding through hole for the anchor rod is provided on the first sealing ring. After the anchor rod passes through the through hole, a locking nut is threadedly connected to it. A first sealing rubber ring is provided between the first sealing ring and the ring plate.

[0006] Preferably, one end of the steel sleeve corresponding to the working well is an arc-shaped surface corresponding to the inner wall of the working well, and the anchor rod is connected to a locking nut after passing through the ring plate.

[0007] Preferably, a second sealing ring is connected to the outside of the first sealing ring via a sleeve, and a third sealing ring is fixed to the second sealing ring by bolts. A second sealing rubber ring is provided between the second sealing ring and the third sealing ring.

[0008] Preferably, a sealing sleeve is provided between the first sealing ring and the second sealing ring, and the two ends of the sealing sleeve are respectively provided with a first flange and a second flange that glue the first sealing ring and the second sealing ring together.

[0009] Preferably, the outer periphery of the sleeve is connected to multiple connecting pipes, which are connected to liquid or gas pressure pumps respectively.

[0010] Preferably, the ring plate and the inner wall of the steel sleeve are provided with anchors.

[0011] Preferably, one end of the anchor is welded to fix the ring plate or the steel sleeve, and the other end of the anchor is provided with a 90° bend.

[0012] Beneficial effects: The steel sleeve is connected to the working well through a concrete ring. The anchor rod passes through the ring plate and the concrete ring and extends into the external soil for grouting and consolidation. At the same time, the locking nuts firmly connect the components, which enhances the stability of the connection between the entire water-stopping structure and the working well and the surrounding soil, making it less prone to loosening during the pipe jacking process. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the water-stopping structure in a specific embodiment of this utility model.

[0014] In the diagram: 1. Well wall of the working well; 2. Concrete ring; 3. Ring plate; 4. Steel sleeve; 5. Anchor; 6. First sealing ring; 7. Second sealing ring; 8. Sealing sleeve; 9. Sleeve; 10. First sealing ring; 11. Second sealing ring; 12. Third sealing ring; 13. Anchor bolt. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0016] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0018] like Figure 1 As shown, a water-stopping structure for a pipe jacking opening includes a steel sleeve 4, an anchor rod 13, and a first sealing ring 10. One end of the steel sleeve 4 abuts against the inner wall of the working shaft corresponding to the jacking direction. To better fit the inner wall of the working shaft and improve connection stability, the end of the steel sleeve 4 corresponding to the working shaft is designed as an arc-shaped surface corresponding to the inner wall of the working shaft. The other end of the steel sleeve 4 is connected to an outwardly folded ring plate 3. The ring plate 3 and the steel sleeve 4 together form an annular casting groove corresponding to the outer wall of the pipe jacking. A concrete ring 2 is poured into the annular casting groove. During pouring, formwork and scaffolding can be set outside the annular casting groove, without too many restrictions. The concrete ring 2 can enhance the connection strength between the steel sleeve 4 and the working shaft and improve the stability of the overall structure. After the anchor rod 13 passes through the ring plate 3, it is connected to a locking nut, thereby enhancing the connection stability between the entire water-stopping structure and the working shaft and the surrounding soil.

[0019] Anchor bolt 13 passes through ring plate 3, concrete ring 2, and well wall 1 of working well before extending into the external soil. Grouting holes are provided at the portion of anchor bolt 13 corresponding to the external soil. Grouting is performed using grouting equipment to solidify the external soil. Grouting can be performed before or simultaneously with pouring. The inner diameter of the first sealing ring 10 matches the outer diameter of the jacking head (or pipe section) and can accommodate a certain degree of relative displacement of the jacking pipe, allowing the water-stopping structure to adapt to jacking pipe construction of different specifications and exhibiting strong adaptability. A through hole corresponding to anchor bolt 13 is provided on the first sealing ring 10. After the anchor bolt 13 passes through the through hole, a locking nut is threaded onto it. A first sealing rubber ring 6 is provided between the first sealing ring 10 and ring plate 3. The first sealing ring 10 is fixed by the compression of the locking nut. The first sealing ring 10 is made of rubber, and its inner diameter is smaller than the outer diameter of the jacking pipe.

[0020] In this embodiment, a second sealing ring 11 is connected to the outside of the first sealing ring 10 via a sleeve 9. A third sealing ring 12 is fixed to the second sealing ring 11 by bolts. A second sealing rubber ring 7 is provided between the second sealing ring 11 and the third sealing ring 12. The second sealing rubber ring 7 has the same specifications as the first sealing rubber ring 6. The first sealing ring 10, the second sealing ring 11, and the third sealing ring 12 are all made of steel plates. The sealing rubber sleeve 8 can adapt to the relative displacement of the jacking pipe and at the same time provide good sealing performance to prevent water, mud, sand, etc. from leaking from the connection between the first sealing ring 10 and the second sealing ring 11.

[0021] Furthermore, a sealing sleeve 8 is provided between the first sealing ring 10 and the second sealing ring 11. The outer diameter of the sealing sleeve 8 is adapted to the inner diameter of the second sealing ring 7 or the first sealing ring 6, and its length is adapted to the length of the sleeve 9, which can increase the contact area with the jacking pipe. The two ends of the sealing sleeve 8 are respectively provided with a first flange and a second flange for bonding the first sealing ring 10 and the second sealing ring 11, so that the sealing sleeve 8, the second sealing ring 7 or the first sealing ring 6 form a closed cavity. Multiple connecting pipes are connected to the outer circumference of the sleeve 9. The connecting pipes are connected to liquid or gas pressure pumps, so that gas or other filling liquids can be pumped in according to actual use, thereby adjusting the pressure and allowing the sealing sleeve 8 to be installed at different pressures against the jacking pipe, thereby improving the compatibility performance.

[0022] In another alternative embodiment, the inner walls of the ring plate 3 and the steel sleeve 4 are provided with anchors 5, which can be steel bars. The ring plate 3 or the steel sleeve 4 is welded to one end of the anchor 5, and the other end of the anchor 5 is provided with a 90° bend, thereby improving the tensile strength of the anchor 5.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A water-stopping structure for a pipe jacking opening, characterized in that, include: A steel sleeve, one end of which abuts against the inner wall of the working well in the direction of jacking, and the other end is connected to an outwardly folded ring plate to form an annular casting groove corresponding to the outer wall of the jacking pipe, and a concrete ring is cast in the annular casting groove. An anchor bolt, which passes through the ring plate, the concrete ring and the well wall of the working well and extends into the external soil, has grouting holes in the part of the anchor bolt corresponding to the external soil, so as to consolidate the external soil by grouting; The first sealing ring has an inner diameter that matches the outer diameter of the machine head. A corresponding through hole for the anchor rod is provided on the first sealing ring. After the anchor rod passes through the through hole, a locking nut is threadedly connected to it. A first sealing rubber ring is provided between the first sealing ring and the ring plate.

2. The water-stopping structure for the pipe jacking opening according to claim 1, characterized in that, The steel sleeve has an arc-shaped surface corresponding to the inner wall of the working well at one end, and the anchor rod is connected to a locking nut after passing through the ring plate.

3. The water-stopping structure for the pipe jacking opening according to claim 1, characterized in that, A second sealing ring is connected to the outside of the first sealing ring by a sleeve, and a third sealing ring is fixed to the second sealing ring by bolts. A second sealing rubber ring is provided between the second sealing ring and the third sealing ring.

4. The water-stopping structure for the pipe jacking opening according to claim 3, characterized in that, A sealing sleeve is provided between the first sealing ring and the second sealing ring, and a first flange and a second flange are respectively provided at both ends of the sealing sleeve to bond the first sealing ring and the second sealing ring.

5. The water-stopping structure for the pipe jacking opening according to claim 4, characterized in that, The sleeve is connected to multiple connecting pipes on its outer periphery, and the connecting pipes are connected to liquid or gas pressure pumps respectively.

6. The water-stopping structure for the pipe jacking opening according to claim 1, characterized in that, Anchors are provided on the inner wall of the ring plate and the steel sleeve.

7. The water-stopping structure for the pipe jacking opening according to claim 6, characterized in that, One end of the anchor is welded to fix the ring plate or the steel sleeve, and the other end of the anchor is provided with a 90° bend.

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