CN214273645U - Underground excavation TSS type grouting pipe for storage regulating tunnel - Google Patents

Abstract

The application relates to a storage tunnel undercut TSS type slip casting pipe, which belongs to the technical field of slip casting pipes and comprises a slip casting pipe body and a core pipe positioned in the slip casting pipe body, wherein the bottom end of the slip casting pipe body is closed, and the top end of the core pipe extends out of the slip casting pipe body and is connected with slip casting equipment; the grouting pipe comprises a grouting pipe body and a core pipe, wherein the wall of the grouting pipe body is provided with a plurality of stepped grout overflow holes with small inside and large outside, a water stopping paste for plugging the grout overflow holes is pasted in the grout overflow holes, and the bottom end of the core pipe is provided with a grout stopping mechanism. The grouting pipe has the effect of preventing water and sand in the stratum from entering the grouting pipe during grouting construction.

Description

Underground excavation TSS type grouting pipe for storage regulating tunnel

Technical Field

The application relates to the field of grouting pipes, in particular to a storage adjusting tunnel undercut TSS type grouting pipe.

Background

The storage regulating tunnel (also called storage regulating pipeline) is a large-scale and extra-large-scale drainage tunnel buried in underground space. Usually, the regulation tunnel can be arranged in the area where the waterlogging is easy to occur, the population is dense, the underground pipeline is complex and the existing drainage is difficult to transform. The large-scale storage tunnel is adopted to assist in source runoff control, so that the construction requirement of a sponge city is met, a water treatment strategy for tailoring clothes according to water measures is shown, and the method is also a common method for improving drainage waterlogging prevention standards in established regions abroad.

When the underground excavation construction grouting operation of the storage tunnel is carried out on the saturated water-bearing sand stratum, when the traditional grouting pipe is adopted for grouting, water and sand in the stratum easily enter the grouting pipe through the grout overflow hole.

SUMMERY OF THE UTILITY MODEL

In order to avoid water and sand grains in the stratum from entering the grouting pipe, the application provides the underground excavation TSS type grouting pipe of the storage tunnel.

The application provides a regulation tunnel undercut TSS type slip casting adopts following technical scheme:

a kind of regulation tunnel undercut TSS type slip casting pipe, including slip casting tube, core tube located in slip casting tube, the bottom of the said slip casting tube is closed, the top of the said core tube stretches out of the slip casting tube and connects the grouting apparatus; the grouting pipe comprises a grouting pipe body and a core pipe, wherein the wall of the grouting pipe body is provided with a plurality of stepped grout overflow holes with small inside and large outside, a water stopping paste for plugging the grout overflow holes is pasted in the grout overflow holes, and the bottom end of the core pipe is provided with a grout stopping mechanism.

By adopting the technical scheme, when grouting operation is carried out on a saturated water-bearing sand stratum, the grouting pipe body is put down into the grouting hole, and then the core pipe with the grout stopping mechanism is put down to the primary grouting position; during grouting, the grout enters the grouting pipe body from the core pipe and is limited by the grout stopping mechanism and cannot continue to move upwards, so that the grout generates pressure to flush the water stopping paste for closing the grout overflow hole, and the grout enters the stratum; the arrangement of the water stop paste can prevent water or sand particles in the stratum from entering the grouting pipe body from the grout overflow hole after the grouting pipe body is lowered, so that the grouting quality is not influenced; the arrangement of the grout stopping mechanism enables grouting to be conducted in a segmented mode, so that grout can enter stratum gaps more fully.

Preferably, the grout stopping mechanism comprises a limiting ring fixed at the lower part of the core pipe and extending outwards, a rubber grout stopping plug is sleeved at the position, above the limiting ring, of the core pipe, and an adjusting component for driving the grout stopping plug to deform and reset is arranged above the grout stopping plug.

Through adopting above-mentioned technical scheme, the thick liquid stopper that ends that rubber set up has certain elasticity, can warp the inflation under the condition that receives pressure and resume the original state after pressure is removed, and the inflation plays and ends the thick liquid effect when guaranteeing the slip casting, and the core pipe is convenient for promote to the original state when removing the core pipe.

Preferably, the length of the grout stopping plug is 6-8 cm.

By adopting the technical scheme, the grout stopping plug with a certain length can ensure the grout stopping effect.

Preferably, the adjusting assembly comprises a compression nut in threaded connection with the outer wall of the core pipe, a top pipe surrounding the core pipe is fixed on the top surface of the compression nut, the top end of the top pipe extends out of the grouting pipe body, and the compression nut can tightly press the grout stopping plug on the inner wall of the grouting pipe body under the action of the top pipe.

By adopting the technical scheme, the top pipe is rotated to drive the compression nut to synchronously rotate, so that the distance between the compression nut and the limiting ring is adjusted, and the grout stopping plug deforms and expands or recovers the original shape.

Preferably, the grouting pipe body, the jacking pipe and the core pipe are all steel pipes.

By adopting the technical scheme, the strength of the grouting pipe body, the jacking pipe and the core pipe is ensured.

Preferably, the top pipe is a square pipe.

Through adopting above-mentioned technical scheme, conveniently utilize equipment to rotate the push pipe.

Preferably, the bottom end of the grouting pipe body is sealed by a conical head, and the conical head is in threaded connection with the grouting pipe body.

Through adopting above-mentioned technical scheme, set the bottom of slip casting body into the conical head, can select to utilize the mode of external force jacking to push the slip casting pipe into the stratum.

Preferably, an outwardly extending grout sealing flange is fixed to the upper part of the grouting pipe body.

By adopting the technical scheme, after the grouting pipe body is put in place, plugging materials are plugged between the orifice hole wall and the pipe wall of the grouting hole, and then the grouting flange is welded on the grouting pipe body and fixed with the ground, so that the problem of reverse grouting is avoided.

Preferably, the grouting pipe body comprises a bottom pipe at the lower part, a connecting pipe at the middle part and not less than one connecting pipe, and an outer leakage pipe with the upper part leaking out of the ground, wherein the bottom pipe and the connecting pipe, and the connecting pipe and the outer leakage pipe can be detachably connected.

Through adopting above-mentioned technical scheme, adopt the mode of section by section transfer slip casting body, can accelerate transfer speed, also make things convenient for the equipment of slip casting body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the water-stopping paste is pasted on the grout overflow hole of the grouting pipe body, and the core pipe is utilized to perform grouting into the grouting pipe body, so that grout of the grouting pipe body generates certain pressure and then the water-stopping paste is flushed out and enters the stratum, and therefore no stratum water and sand particles enter the grouting pipe body during non-grouting;

2. the bottom of the core pipe is provided with the grout stopping plug capable of adjusting tightness, so that sectional grouting is realized, and grouting quality is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of a storage regulation tunnel undercut TSS type grouting pipe according to an embodiment of the present application.

Fig. 2 is a partial exploded view of a storage tunnel undercut TSS-type grouting pipe according to an embodiment of the present application.

Fig. 3 is a sectional view of a storage tunnel undercut TSS type grout pipe according to an embodiment of the present application.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Description of reference numerals: 1. grouting a pipe body; 11. a bottom tube; 12. a connecting pipe; 13. an outer leak pipe; 131. a sealing flange; 14. a conical head; 15. a slurry overflow hole; 16. a waterproof paste; 17. a threaded sleeve; 2. jacking pipes; 3. a core tube; 31. a limiting ring; 4. a grout stopping plug; 5. and (5) pressing the nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses regulation tunnel undercut TSS type slip casting pipe. Referring to fig. 1 and 2, the underground excavated TSS-type grouting pipe for a storage regulating tunnel includes a vertically arranged grouting pipe body 1, a core pipe 3 located in the grouting pipe body 1, and a top pipe 2 located between the grouting pipe body 1 and the core pipe 3. The top end of the core tube 3 is connected with grouting equipment.

The grouting pipe body 1 comprises a bottom pipe 11 at the lower part, a connecting pipe 12 at the middle part and an outer leakage pipe 13 at the upper part. The top end of the bottom tube 11, the two axial ends of the connecting tube 12 and the outer wall of the bottom end of the outer leakage tube 13 are provided with external threads. The bottom pipe 11 and the connection pipe 12 are connected by a screw sleeve 17 having an internal thread, and the connection pipe 12 and the outer leak pipe 13 are connected by the screw sleeve 17. The outer wall of the threaded sleeve 17 is flush with the outer wall of the grouting pipe body 1.

The inner wall of the bottom end of the bottom tube 11 is provided with an internal thread and is in threaded connection with a conical head 14 positioned below the bottom tube 11. The conical head 14 is hollow inside. The bottom of the bottom pipe 11 is connected with a conical head 14, so that the grouting pipe body 1 is conveniently pressed into the stratum below.

In practical operation, a plurality of connecting pipes 12 can be arranged according to the construction grouting depth, and the adjacent connecting pipes 12 are connected by adopting the threaded sleeves 17.

The outer walls of the bottom pipe 11, the connecting pipe 12 and the outer leakage pipe 13 are all provided with a plurality of stepped slurry overflow holes 15 with small inside and large outside. The water-stop paste 16 which can prevent formation water and sand particles from entering the pipe is pasted in the slurry overflow hole 15 by waterproof glue. The waterproof sheet 16 has waterproof properties.

The outer wall of the outer leakage pipe 13 is welded with a sealing flange 131 which is coaxial with the outer leakage pipe 13. The sealing flange 131 can function as an anti-repulping.

Referring to fig. 3 and 4, a limiting ring 31 extending outward is fixed at a position near the bottom end of the lower portion of the core tube 3. The connection between the core tube 3 and the limiting ring 31 is welding. The distance between the limiting ring 31 and the bottom end of the core tube 3 is 3-5 cm. A rubber grout stop plug 4 surrounding the core tube 3 is arranged above the limiting ring 31. The length of the grout stopping plug 4 is 6-8 cm. The position of the core tube 3 above the grout stop plug 4 is provided with an external thread section. The distance between the bottom end of the external thread section and the limiting ring 31 is less than 3 cm. The external thread section of the core tube 3 is connected with a compression nut 5 in a threaded manner. When the compression nut 5 is screwed to drive the compression nut 5 to approach the limiting ring 31, the grout stop plug 4 deforms and expands, so that the grout stop plug is tightly attached to the inner wall of the grouting pipe body 1 and tightly pressed on the inner wall of the grouting pipe body 1, and the grout stop effect is achieved.

The bottom end of the top pipe 2 is fixedly connected with the compression nut 5, and the top pipe 2 is a square pipe. The top end of the top pipe 2 extends out of the grouting pipe body 1.

In this embodiment, the grouting pipe body 1, the top pipe 2 and the core pipe 3 are all steel pipes. The cone head 14 is made of steel.

The embodiment of the application provides an implementation principle of regulation tunnel undercut TSS type slip casting pipe does: connecting a bottom pipe 11, a connecting pipe 12 and an outer leakage pipe 13 which are provided with a grout overflow hole 15 and are adhered with a water stop paste 16 according to the total grouting depth, connecting a conical head 14 to the bottom pipe 11, and then jacking the grouting pipe body 1 into the stratum by using equipment; the core pipe 3 is placed to the primary grouting position, then the top pipe 2 is rotated by using special equipment to enable the compression nut 5 to synchronously rotate and extrude and deform the grout stop plug 4, so that the upper part and the lower part of the grouting pipe body 1 are separated, and the phenomenon that during grouting, grout is blown upwards along the inner part of the grouting pipe body 1 to ensure the quality is avoided; under the pressure of the slurry, the water stop patch 16 is flushed open, thereby allowing the slurry to enter the formation.

After the primary grouting is finished, the top pipe 2 is rotated reversely to reset the grout stop plug 4, and the core pipe 3 is moved upwards to the next grouting position to lock the grout stop plug 4 again.

Before the grouting operation, the hole can be drilled firstly, and then the grouting pipe body 1 is jacked in, so that the jacking time is saved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a regulation tunnel undercut TSS type slip casting pipe, includes slip casting body (1), core pipe (3) that are located slip casting body (1), its characterized in that: the bottom end of the grouting pipe body (1) is closed, and the top end of the core pipe (3) extends out of the grouting pipe body (1) and is connected with grouting equipment; the grouting pipe comprises a grouting pipe body (1), wherein the pipe wall of the grouting pipe body (1) is provided with a plurality of stepped grout overflow holes (15) with small inside and large outside, a water stopping paste (16) for plugging the grout overflow holes (15) is pasted in the grout overflow holes (15), and a grout stopping mechanism is arranged at the bottom end of a core pipe (3).

2. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 1, characterized in that: stop thick liquid mechanism including fixing in core pipe (3) lower part and outside spacing ring (31) that stretches out, the position cover that core pipe (3) are located spacing ring (31) top is equipped with rubber and ends thick liquid stopper (4), it is provided with the drive and ends thick liquid stopper (4) deformation and the adjusting part who resets to end thick liquid stopper (4) top.

3. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 2, characterized in that: the length of the grout stopping plug (4) is 6-8 cm.

4. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 2, characterized in that: the adjusting assembly comprises a compression nut (5) in threaded connection with the outer wall of the core pipe (3), a top pipe (2) surrounding the core pipe (3) is fixed on the top surface of the compression nut (5), the top end of the top pipe (2) extends out of the grouting pipe body (1), and the compression nut (5) can compress the grout stopping plug (4) on the inner wall of the grouting pipe body (1) under the action of the top pipe (2).

5. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 4, characterized in that: the grouting pipe body (1), the jacking pipe (2) and the core pipe (3) are all steel pipes.

6. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 4, characterized in that: the top pipe (2) is a square pipe.

7. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 1, characterized in that: the bottom of slip casting body (1) utilizes conical head (14) to seal, conical head (14) and slip casting body (1) threaded connection.

8. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 1, characterized in that: and a grout sealing flange (131) extending outwards is fixed at the upper part of the grouting pipe body (1).

9. The underground excavation TSS type grouting pipe of the storage tunnel according to claim 1, characterized in that: the grouting pipe body (1) comprises a bottom pipe (11) at the lower part, at least one connecting pipe (12) in the middle and an outer leakage pipe (13) with the upper part leaking out of the ground, and the bottom pipe (11) and the connecting pipe (12) and the outer leakage pipe (13) can be detachably connected.

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