CN216588644U

CN216588644U - Be applied to stagnant water structure at push pipe play entrance to a cave position in deep-well

Info

Publication number: CN216588644U
Application number: CN202122873753.1U
Authority: CN
Inventors: 刘伟伟; 孙保仓; 王维军; 张王宝; 李家威; 赵栋栋; 赵金伟
Original assignee: CCCC Shanghai Dredging Co Ltd.
Current assignee: CCCC Shanghai Dredging Co Ltd.
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-24
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a water stop structure applied to a position of a hole outlet of a jacking pipe in a deep-well, which is characterized in that: the open caisson comprises a sleeve, a support and a support, wherein the sleeve is pre-embedded in a hole on the wall of the open caisson, one section of the sleeve extends out of the open caisson, and the support is arranged in the sleeve in a penetrating manner; the packing water stopping device is sleeved on the top pipe, is attached to the top pipe and is connected with the sleeve pipe; and the rubber water stopping device is sleeved on the top pipe and attached to the top pipe, is positioned between the packing water stopping device and the sleeve pipe, and has the inner side end fixed with the sleeve pipe and the outer side end fixed with the packing water stopping device. According to the utility model, the packing water stopping device is arranged on the outer side of the jacking pipe, the rubber water stopping device is arranged between the packing water stopping device and the sleeve, and multiple water stopping is realized, so that the water stopping effect during soil gushing and water gushing is ensured, and the safety of the jacking pipe outlet construction in the deep well is improved.

Description

Be applied to stagnant water structure at push pipe play entrance to a cave position in deep-well

Technical Field

The utility model relates to a water stop structure applied to a position of a hole outlet of a jacking pipe in a deep-well.

Background

And (3) carrying out pipe jacking construction below the underground water level, wherein the underground water pressure at the hole outlet part is in direct proportion to the height of the underground water, and the water stopping at the hole outlet part is directly related to success or failure of the pipe jacking construction. The rubber water stopping structure is suitable for the situation that the pressure of underground water at a hole outlet is less than or equal to 0.08Mpa, and for a deep open caisson (an open caisson with the height from the bottom to the ground exceeding 10m), the structure is not suitable any more if the underground water level is higher. The packing water stop is suitable for the situation that the underground water pressure at the hole outlet is larger than 0.08Mpa, but if the working well is deep (the height of the underground water at the hole outlet exceeds 10m), the safety factor of a single water stop structure is low, if soil gushing and water gushing occur, great construction difficulty or economic loss can be brought, and even safety accidents can occur. In view of the above, there is a need for an improvement of the existing water stop structure for the specificity of the top pipe in the deep well.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water-stopping structure applied to the outlet of the top pipe in the deep-well, which improves the water-stopping performance and the safety of the outlet construction of the top pipe in the deep-well.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a be applied to stagnant water structure at push pipe exit hole position in deep-well which characterized in that: comprises that

The sleeve is pre-embedded in the opening on the wall of the open caisson, one section of the sleeve extends out of the open caisson, and the jacking pipe is arranged in the sleeve in a penetrating way;

the packing water stopping device is sleeved on the top pipe, attached to the top pipe and connected with the sleeve pipe;

and the rubber water stopping device is sleeved on the top pipe and attached to the top pipe, is positioned between the packing water stopping device and the sleeve pipe, and has an inner side end fixed with the end face of the sleeve pipe and an outer side end fixed with the end face of the inner side end of the packing water stopping device.

Preferably, the packing water stopping device comprises a pressing ring, a first disc root and a fixing ring, the pressing ring is sleeved on the top pipe, the first disc root is arranged in a gap between the pressing ring and the top pipe, the fixing ring is sleeved on the top pipe and is positioned on one side, away from the sleeve, of the pressing ring, and the inner side end of the fixing ring stretches into the gap between the pressing ring and the top pipe to limit the first disc root in the gap between the pressing ring and the top pipe; rubber sealing device establishes adapter sleeve and rubber ring on the push pipe including the cover, the adapter sleeve is located between clamping ring and the sleeve pipe, the medial extremity and the sheathed tube terminal surface of adapter sleeve are fixed, the outside end of adapter sleeve is fixed with the medial extremity terminal surface of clamping ring, the rubber ring cover is established on the push pipe and is located between adapter sleeve and the sleeve pipe.

In order to form a plurality of additional water stops, preferably, a second packing is arranged in a gap between the fixing ring and the top pipe.

Preferably, the end face of the outer end of the fixing ring extends outwards in the radial direction to form a flange, the flange is fixed with the end face of the outer end of the pressing ring, a baffle ring sleeved on the top pipe is arranged on the inner side of the connecting sleeve, and the first disk root is limited between the inner end of the fixing ring and the baffle ring.

In order to find the underground water condition in the casing and in the soil body, preferably, a water level observation ball valve is arranged on the side wall of one section of the casing extending out of the well.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the packing water stopping device is arranged on the outer side of the jacking pipe, the rubber water stopping device is arranged between the packing water stopping device and the sleeve, and multiple water stopping is realized, so that the water stopping effect during soil gushing and water gushing is ensured, and the safety of the jacking pipe outlet construction in the deep well is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view at I in fig. 1.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Referring to fig. 1 to 2, a preferred embodiment of a water stopping structure applied to a top pipe exit hole part in a deep well according to the present invention is shown, and includes a casing 1, a packing water stopping device 3, and a rubber water stopping device 4.

The sleeve 1 is pre-embedded in a hole on the wall of the open caisson, one section of the sleeve extends out of the open caisson, and the jacking pipe is arranged in the sleeve in a penetrating way; punching holes in four directions on the side wall of one section extending out of the well, cutting wires and installing a water level observation ball valve 6. The top pipe 2 is arranged in the casing pipe 1 in a penetrating way.

Packing watertight fittings 3 includes clamping ring 31, first packing 32 and solid fixed ring 33, and the clamping ring 31 cover is established on push pipe 2, and first packing 32 sets up in the clearance between clamping ring 31 and push pipe 2, and solid fixed ring 33 cover is established on push pipe 2 and is located the clamping ring 31 and keeps away from one side of sleeve pipe 1, and the medial extremity of solid fixed ring 33 stretches into in the clearance between clamping ring 31 and push pipe 2 and spacing first packing 32 in the clearance between clamping ring 31 and push pipe 2. The end face of the outer end of the fixed ring 33 extends outwards in the radial direction to form a flange 331, the flange 331 is fixed with the end face of the outer end of the pressing ring 31, and a second packing 34 is arranged in a gap between the fixed ring 33 and the top pipe 2.

The rubber water stop device 4 comprises a connecting sleeve 41 and a rubber ring 42, the connecting sleeve 41 is sleeved on the top pipe 2, the connecting sleeve 41 is located between the pressing ring 31 and the casing pipe 1, the inner side end of the connecting sleeve 41 is fixed with the end face of the casing pipe 1, the outer side end of the connecting sleeve 41 is fixed with the end face of the inner side end of the pressing ring 31, in the embodiment, the two end faces of the connecting sleeve 41 respectively extend outwards in the radial direction to form flanges, the two flanges are respectively connected with the end face of the inner side end of the pressing ring 31 and the end face of the casing pipe 1 through bolt and nuts, the rubber ring 42 is sleeved on the top pipe 2 and located between the connecting sleeve 41 and the casing pipe 1, bolt holes corresponding to the end face of the casing pipe 1 and allowing bolts to pass through are formed in the end face of the rubber ring 42, and the rubber ring 42 is tightly attached to the top pipe 2. The inner side of the connecting sleeve 41 is provided with a baffle ring 5 sleeved on the top pipe 2, and the first disk root 32 is limited between the inner side end of the fixing ring 33 and the baffle ring 5.

The construction process comprises the following steps:

1. production and installation of the bushing 1

And (3) manufacturing a sleeve and a steel seal door according to the designed size, and punching, cutting wires and installing a water level observation ball valve 6 in the upper, lower, left and right directions of one section of side wall extending out of the well when the sleeve is manufactured. When the open caisson is manufactured, the sleeve 1 is pre-buried in a jacking pipe outlet in the open caisson.

2. Checking underground water condition and opening steel sealing door

And opening the water level observation ball valve 6 to observe whether underground water exists or not, wherein the opening sequence is from top to bottom, if no water exists or the water quantity and the water pressure are not large, the connecting bolts are loosened one by one and the steel seal door is detached.

3. Rubber water stop device 4

Under the assistance of a crane, the bolt hole positions of the rubber rings 42 are adjusted to be in one-to-one correspondence with the bolt holes of the sleeve 1, bolts are inserted one by one, the rubber rings 42 and the connecting sleeves 41 are installed, and end fixing nuts are screwed down.

4. Jacking of push bench

The compression ring 31 of the packing water stopping device 3 is inserted into the push bench, and the push bench pushes the push pipe 2 and crosses the rubber water stopping device 4.

5. Mounting packing water stop device 3

With the aid of a crane, the end face of the inner end of the pressure ring 31 is opposed to the flange on the rubber ring 42, and the two are connected one by installing bolts. And a first disk root 32 is annularly coiled on the push bench, the first disk root 32 is plugged into a gap between the pressing ring 31 and the push pipe 2 by an iron crowbar to be compressed, finally, a fixing ring 33 is installed, and the flange 331 is connected and fastened with the end face of the outer side end of the pressing ring 31 by bolts.

6. Jacking of push bench

The push bench passes through the sleeve 1 and the water stopping device to push the push pipe into the soil. In the pipe jacking process, when the hydraulic jack retracts, the jacking pipe 2 which is jacked to be finished can retreat in a small range, if only a traditional rubber water stopping device is adopted, a rubber ring can retreat along with a pipeline, even turns over, the water stopping effect is reduced, and soil gushing and water gushing can be caused in serious cases. By adopting the water stopping structure, the packing of the packing water stopping device at the outer side can effectively prevent the rubber ring from returning along with the pipeline 2, and the water stopping effect is ensured.

7. Back filling packing

In the pipe jacking process, if water seepage and leakage occur between the gap between the pipe jacking 2 and the casing pipe 1, a second packing 34 can be arranged in the gap between the fixing ring 33 and the pipe jacking 2, and the second packing 34 moves forwards along with jacking of the pipe jacking 2 to form a plurality of additional water stops.

Claims

1. The utility model provides a be applied to stagnant water structure at push pipe exit hole position in deep-well which characterized in that: comprises that

The sleeve (1) is pre-buried in a hole on the wall of the open caisson, one section of the sleeve extends out of the open caisson, and the jacking pipe (2) penetrates through the sleeve (1);

the packing water stopping device (3) is sleeved on the top pipe (2), is attached to the top pipe (2) and is connected with the casing pipe (1);

and the rubber water stopping device (4) is sleeved on the top pipe (2) and attached to the top pipe (2), and is positioned between the packing water stopping device (3) and the sleeve (1), the inner side end of the rubber water stopping device (4) is fixed with the end face of the sleeve (1), and the outer side end of the rubber water stopping device is fixed with the end face of the inner side end of the packing water stopping device (3).

2. The water stop structure applied to the outlet of the top pipe in the deep well according to claim 1, is characterized in that: the packing water stopping device (3) comprises a pressing ring (31), a first packing (32) and a fixing ring (33), the pressing ring (31) is sleeved on the push pipe (2), the first packing (32) is arranged in a gap between the pressing ring (31) and the push pipe (2), the fixing ring (33) is sleeved on the push pipe (2) and is positioned on one side, away from the sleeve (1), of the pressing ring (31), and the inner side end of the fixing ring (33) stretches into the gap between the pressing ring (31) and the push pipe (2) to limit the first packing (32) in the gap between the pressing ring (31) and the push pipe (2); rubber sealing device (4) establish adapter sleeve (41) and rubber ring (42) on push pipe (2) including the cover, adapter sleeve (41) are located between clamping ring (31) and sleeve pipe (1), the medial extremity of adapter sleeve (41) is fixed with the terminal surface of sleeve pipe (1), the outside end of adapter sleeve (41) is fixed with the medial extremity terminal surface of clamping ring (31), rubber ring (42) cover is established on push pipe (2) and is located between adapter sleeve (41) and sleeve pipe (1).

3. The water stop structure applied to the outlet of the top pipe in the deep well according to claim 2, is characterized in that: and a second packing (34) is arranged in a gap between the fixing ring (33) and the top pipe (2).

4. The water stop structure applied to the outlet of the top pipe in the deep well according to claim 2, is characterized in that: the end face of the outer end of the fixing ring (33) extends outwards along the radial direction to form a flange (331), the flange (331) is fixed with the end face of the outer end of the pressing ring (31), a retaining ring (5) sleeved on the top pipe (2) is arranged on the inner side of the connecting sleeve (41), and the first packing (32) is limited between the inner end of the fixing ring (33) and the retaining ring (5).

5. The water stopping structure applied to the outlet of the top pipe in the deep well according to any one of claims 1 to 4, wherein: and a water level observation ball valve (6) is arranged on the side wall of one section of the casing (1) extending out of the well.