CN217712560U

CN217712560U - Stratum reinforcing apparatus and stratum reinforcing system

Info

Publication number: CN217712560U
Application number: CN202222190701.9U
Authority: CN
Inventors: 朱毅; 毕程程; 白中坤; 赵修旺; 娄源澎; 郭宗豪; 郭江龙
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-01
Anticipated expiration: 2032-08-19

Abstract

The utility model relates to a stratum reinforcement technical field especially indicates a stratum reinforcing apparatus and stratum reinforcerment system, has solved among the prior art to the near side construction space of existing building require high, the problem that the efficiency of construction is low. The utility model discloses stratum reinforcing apparatus, include the slip casting pipe of can dismantling the connection with the guide bar, slip casting pipe sealing connection is at the exit end of guide bar, be equipped with stirring vane and slip casting hole on the slip casting pipe, be equipped with on the guide bar and be used for driving slip casting pipe pivoted actuating mechanism, the entrance point of guide bar is connected with grouting equipment. The utility model realizes remote reinforcement of underground space by using positioning drilling technology and matching with stratum reinforcement device; the reinforced structure is formed in one step, the operation is simple and convenient, the construction period is shortened, and the construction efficiency is improved.

Description

Stratum reinforcing apparatus and stratum reinforcing system

Technical Field

The utility model relates to a stratum reinforcement technical field especially indicates a stratum reinforcing apparatus and stratum reinforcerment system.

Background

Because the construction environment of urban subways is complex, the excavation of subway intervals mostly adopts a shield technology to pass through a building group. The shield technology can be used for underground space engineering on the premise of not dismantling the existing building or construction, and has high adaptability and economy.

The construction in the subway region inevitably causes the displacement of the surrounding soil body, and if the foundation disturbance on the existing building in the soil body is too large, the damage of dumping, irregular settlement and the like of the existing building can be caused, and serious casualties and property loss are caused. Therefore, the settlement control usually needs to be carried out by taking measures for reinforcing the stratum, which mainly comprises two forms, namely, the stratum is reinforced by dismantling the existing building, and although the reinforcing effect is better, the money and the money are lost by the lawful people and the loss is not paid; the other method is to reserve the existing building to reinforce the stratum, and mainly adopts the methods that the existing building near side is used as a working vertical well to reinforce the lower part of the existing building, the existing building near side ground is obliquely reinforced to reinforce the lower part of the existing building, and the like, and the reinforcing methods have higher safety factor and good economy, but have higher requirements on the construction space around the existing building, and have no construction space on the near side facing a large-range building group; the shield tunneling and advanced grouting circulating operation have high requirements on construction technology, and the damage of overlong downtime or possible water burst and the like can occur when large-range reinforcement is encountered.

In the prior art, a reinforcing structure of a shield tunnel penetrating through an existing building with the publication number of CN 210033432U and a reinforcing method of a shield tunnel penetrating through the ground of a building with the publication number of CN 111608688A are both constructed close to the building, the requirement on the construction space around the existing building is high, and the construction of a reinforcing device is complex. The advanced grouting reinforcement construction method in the soil pressure balance shield underpass building foundation tunnel with the publication number of CN 112922607A has higher requirements on construction technology, overlong downtime and increased risk coefficient. The horizontal positioning grouting reinforcement construction process suitable for municipal construction of the sludge soft soil stratum, which is disclosed as CN 114060036A, is complex in construction, long in construction time and low in overall construction efficiency.

SUMMERY OF THE UTILITY MODEL

To not enough among the above-mentioned background art, the utility model provides a stratum reinforcing apparatus and stratum reinforcerment system has solved among the prior art to the near side construction space of existing building require high, the problem that the efficiency of construction is low.

The technical scheme of the utility model is realized like this: the utility model provides a stratum reinforcing apparatus, includes the slip casting pipe of can dismantling the connection with the guide bar, slip casting pipe sealing connection is in the exit end of guide bar, be equipped with stirring vane and slip casting hole on the slip casting pipe, be equipped with on the guide bar and be used for driving slip casting pipe pivoted actuating mechanism, the entrance point of guide bar is connected with grouting equipment.

As a preferable mode, the grouting pipe is connected with the guide rod in a relative rotation mode, and the driving mechanism is fixed on the guide rod and is in transmission connection with the grouting pipe.

Specifically, the driving mechanism comprises a driving ring sleeve and a driving motor, one end of the driving ring sleeve is fixedly connected with the guide rod through a connecting piece, the grouting pipe penetrates through the other end of the driving ring sleeve, and the grouting pipe is hermetically connected with the connecting piece and can rotate relative to the connecting piece; the driving motor is positioned in the driving ring sleeve and drives the grouting pipe to rotate through the transmission mechanism.

Preferably, the transmission mechanism comprises a driving gear arranged on an output shaft of the driving motor and a driven gear fixed on the grouting pipe, and the driven gear is meshed with the driving gear.

Preferably, the slip casting pipe is provided with a limit ring matched with the driving ring sleeve, and sealing parts are arranged between the limit ring and the driving ring sleeve as well as between the connecting piece and the slip casting pipe. And the connecting piece and the guide rod are respectively provided with a corresponding cable hole groove, and the guide rod is provided with a fixing piece matched with the cable hole groove.

Preferably, one end of the driving ring sleeve facing the guide rod is a conical surface, and the conical surface is in smooth transition connection with the guide rod; the connecting piece is a tubular piece, the inlet end of the grouting pipe is embedded in the tubular piece, and the inlet end of the tubular piece is sleeved in the guide rod.

As another preferred mode, the grouting pipe is fixedly connected with the guide rod, the driving mechanism is in transmission connection with the guide rod, and the driving mechanism drives the grouting pipe to rotate through the guide rod.

The grouting pipe is a blind pipe, and the open end of the blind pipe is correspondingly connected with the guide rod.

A stratum reinforcing system comprises a drilling machine, a pull-back and power supply device and the stratum reinforcing device; the drilling machine applies the guide rod to the receiving well from the working well, the stratum reinforcing device is installed on the guide rod, and the grouting equipment in the receiving well performs grouting in the guide rod and meanwhile the pull-back and power supply equipment in the receiving well performs pull-back on the guide rod.

The utility model utilizes the positioning drilling technology to be matched with the stratum reinforcing device to realize the remote reinforcement of the underground space; the reinforced structure is formed in one step, the operation is simple and convenient, the construction period is shortened, and the construction efficiency is improved. The stratum reinforcing device of the utility model forms a reinforcing structure through in-situ stratum stirring, has small disturbance to the stratum, and is economic and safe; and the driving ring provides power, so that the stirring force is large, the stirring is more sufficient, and the energy consumption is high when the far end provides torsion. The utility model discloses a stratum reinforcerment system executes repeatedly through stratum reinforcing apparatus and forms row form reinforced structure, realizes that the stratum is more firm, and factor of safety is higher, has higher practicality and spreading value.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is the structure schematic diagram of the stratum reinforcing device of the utility model.

Fig. 2 is a schematic view of the internal structure of the formation reinforcing apparatus in example 2.

Fig. 3 is a schematic view of the inside structure of the drive ring cover of embodiment 2.

Fig. 4 is a schematic view of a driving ring sleeve internal transmission mechanism of embodiment 2.

Fig. 5 is a schematic longitudinal section of a finished guide drill rod.

FIG. 6 is a schematic longitudinal cross-sectional view of a formation strengthening structure during its application.

FIG. 7 is a schematic longitudinal section of a completed formation reinforcing structure.

FIG. 8 is a schematic view of a reinforcing structure.

In the figure: the device comprises a driving ring sleeve 1, a connecting piece 2, a grouting pipe 3, stirring blades 4, a guide rod 5, a cable 6, a working well 7, an existing building (structure) 8, a reinforcing body 9, a stratum reinforcing device 10, a driving motor 11, a driving gear 12, a sealing piece 13, grouting equipment 20, a pull-back and power supply device 30, a grouting hole 31, a driven gear 32, a receiving well 40, a drilling machine 50, a fixing piece 51 and a cable hole groove 52.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1, in embodiment 1, a stratum reinforcing apparatus includes a grouting pipe 3 detachably connected to a guide rod 5, and in an actual working state, the grouting pipe is connected to the guide rod and communicated with the guide rod, and slurry flows to the grouting pipe through the guide rod and then enters a stratum through the grouting pipe to form a reinforcing structure. The grouting pipe 3 is hermetically connected at the outlet end of the guide rod 5 to prevent the slurry from leaking. The grouting pipe 3 is provided with stirring blades 4 and grouting holes 31, and the guide rod 5 is provided with a driving mechanism for driving the grouting pipe 3 to rotate; the slurry injection pipe can rotate in the stratum under the action of the driving mechanism, so that the stirring blades 4 are driven to rotate, the slurry and the stratum soil body are stirred by the blades to form a stirring reinforcing structure, and the reinforcing structure forms a complete reinforcing body along a guide rod pull-back path. The inlet end of the guide rod 5 is connected with a grouting device 20 in an actual construction state, the grouting device is used for filling cement slurry into the guide rod, and the cement slurry is spread outwards in a rotating mode through a grouting hole in a grouting pipe, so that grouting is more uniform.

In the embodiment, the grouting pipe 3 is a blind pipe, namely the blind pipe is provided with an open end and a non-open end, the open end of the blind pipe is correspondingly connected with the guide rod 5, so that cement grout can quickly flow into the grouting pipe, the non-open end is in a closed state, and the cement grout cannot flow out; the stirring blades 4 which are distributed with grouting holes and are circumferentially arranged are arranged on the pipe wall between the open end and the non-open end, so that the grouting and stirring are carried out simultaneously, and the reinforcing efficiency is improved. In the working process, cement slurry with certain pressure enters the stratum through the holes in the grouting pipes in a rotating and diffusing mode, and the stirring blades 4 are combined with the cement slurry to stir the stratum on the walking path and move along with the guide rods.

As shown in fig. 2, in embodiment 2, based on embodiment 1, as an implementation manner, the grouting pipe 3 is connected with the guide rod 5 in a relatively rotating manner, and the driving mechanism is fixed on the guide rod 5 and is in transmission connection with the grouting pipe 3. That is, in the present embodiment, the grouting pipe can rotate relative to the guide rod under the action of the driving mechanism, and the guide rod does not rotate. The method is suitable for long-distance stratum reinforcement.

Specifically, the driving mechanism comprises a driving ring sleeve 1 and a driving motor 11, and the driving ring sleeve 1 is similar to a protective cover of the driving motor and a transmission mechanism. One end of the driving ring sleeve 1 is fixedly connected with the guide rod 5 through the connecting piece 2, the connecting piece 2 is fixed in the driving ring sleeve, and the connecting mode can be welding, flange, thread and the like. Used for connecting the guide rod and the grouting pipe. The grouting pipe 3 is arranged at the other end of the driving ring sleeve 1 in a penetrating way. The grouting pipe 3 is hermetically connected with the connecting piece 2 and can rotate relative to the connecting piece 2; the driving motor 11 is located in the driving ring sleeve 1 and drives the grouting pipe 3 to rotate through a transmission mechanism. The transmission mechanism can adopt a gear pair or a worm and gear structure to realize the rotation of the grouting pipe relative to the guide rod.

As shown in fig. 4, in the present embodiment, as a preferable mode, 4 motors can be adopted, the transmission mechanism includes a driving gear 12 disposed on an output shaft of the driving motor 11 and a driven gear 32 fixed on the grouting pipe 3, the driven gear 32 is fixed on an outer wall of the grouting pipe in a form of a gear ring, the driven gear 32 is engaged with the driving gear 12, the driving motor drives the driven gear to rotate through the driving gear, and further drives the grouting pipe to rotate, so that the stirring blade stirs the cement slurry.

As shown in fig. 3, in this embodiment, a limiting ring 33 is disposed on the grouting pipe 3 and is matched with the driving ring sleeve 1, and the grouting pipe is prevented from moving up and down by the limiting ring 33 at the joint of the grouting pipe 3 and the driving ring sleeve. Sealing elements 13 are arranged between the limiting ring 33 and the driving ring sleeve 1 and between the connecting piece 2 and the grouting pipe 3. The sealing element 13 between the connecting piece 2 and the grouting pipe 3 can adopt a sealing ring to ensure that cement grout does not flow into the driving ring. The sealing element 13 between the limiting ring 33 and the driving ring sleeve 1 enables the grouting pipe to be more stable, and the stirring blades can stably reinforce the stratum.

Preferably, the connecting piece 2 and the guide rod 5 are provided with corresponding cable hole grooves 52, and the cable hole grooves on the connecting piece are arranged in the pipe wall to ensure that the cable 6 normally passes through the pipe wall and are sealed in time by structural adhesive after passing through the pipe wall. The cable hole groove 52 on the guide bar 5 is arranged along the outer wall of the guide bar, and the guide bar 5 is provided with a fixing piece 51 matched with the cable hole groove 52. The cable is fixed by the fixing piece 51 at a certain distance on the guide rod, and laid towards the receiving end along with the drill of the guide rod, and when the guide rod is pulled back, the cable can be recovered after being separated from the fixing piece.

Preferably, one end of the driving ring sleeve 1 facing the guide rod 5 is a conical surface, and the conical surface is in smooth transition connection with the guide rod 5; namely, the surface in the path direction has a certain slope, so that the purpose of reaming in a small range is achieved. The connecting piece 2 is a pipe-shaped piece, the inlet end of the grouting pipe 3 is embedded in the pipe-shaped piece, and the inlet end of the pipe-shaped piece is sleeved in the guide rod 5; ensure the sealing performance of the connection and prevent the slurry from leaking.

Example 3, the difference between this example and example 2 is: slip casting pipe 3 and guide bar 5 fixed connection, actuating mechanism and guide bar 5 transmission are connected, and actuating mechanism drives slip casting pipe 3 through guide bar 5 and rotates. That is, the guide rod and the grouting pipe rotate synchronously in this embodiment, so that the stirring blade can stir the slurry and the soil body. The method is suitable for short-distance stratum consolidation. In the mode, the driving mechanism can adopt a motor or utilize the existing drilling machine or a pull-back device to provide torsional power to drive the guide rod to rotate, so that the stratum reinforcing device integrally rotates, and the stirring blades stir slurry to form a reinforcing structure with stratum soil.

Example 4: a formation strengthening system comprising a drilling rig 50, a pullback and power supply apparatus 30 and the formation strengthening device 10 of

embodiment

2 or 3; the drilling machine 50 applies the guide rod 5 from the working well 7 to the receiving well 40, the formation reinforcing device 10 is installed on the guide rod 5, and the grouting equipment 20 located in the receiving well 40 performs grouting into the guide rod 5 while the pull-back and power supply equipment 30 located in the receiving well 40 performs pull-back on the guide rod 5.

The specific working process is as follows: s1: firstly, preparing a field and materials and constructing a working well 7, then drilling a guide rod 5 in the working well 7 at the initiating end by using a horizontal directional drilling machine 50, arranging cables in grooves along the outer wall of the guide rod, fixing the cables at intervals by using fixing pieces, and paving the cables to a receiving end (a receiving well 40) along with the guide rod until the construction of the guide rod is completed, as shown in fig. 5.

S2: detaching the guide drill bit at the receiving end, connecting the cable with a power supply device, and connecting a pulling-back device and grouting equipment 20; at the initial end, the end part of the guide rod is connected with a stratum reinforcing device 10, the stirring blade supplies energy and stirs through a cable while the guide rod is pulled back, the grouting equipment injects cement slurry to the grouting pipe while stirring, the cement slurry rotationally diffused through the grouting pipe and a stratum soil body are stirred by the blade to form a reinforcing structure, and the reinforcing structure forms a reinforcing body 9 along the pull back path of the guide rod, as shown in fig. 6 and 7.

S3: and (3) repeating the steps S1-S2, and forming a row-shaped occlusion reinforcing body 9 through a stratum reinforcing device, wherein the reinforcing body 9 is far away from the existing building (structure) 8 as shown in figure 8, so that the stratum reinforcing range requirement is met.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stratum reinforcing apparatus characterized in that: include grouting pipe (3) that can dismantle the connection with guide bar (5), grouting pipe (3) sealing connection is at the exit end of guide bar (5), be equipped with stirring vane (4) and injected hole (31) on grouting pipe (3), be equipped with on guide bar (5) and be used for driving grouting pipe (3) pivoted actuating mechanism, the entrance point of guide bar (5) is connected with grouting equipment (20).

2. The formation strengthening device of claim 1, wherein: slip casting pipe (3) are connected with guide bar (5) relative rotation, and actuating mechanism fixes on guide bar (5) and is connected with slip casting pipe (3) transmission.

3. The formation strengthening device of claim 2, wherein: the driving mechanism comprises a driving ring sleeve (1) and a driving motor (11), one end of the driving ring sleeve (1) is fixedly connected with the guide rod (5) through the connecting piece (2), the grouting pipe (3) penetrates through the other end of the driving ring sleeve (1), and the grouting pipe (3) is connected with the connecting piece (2) in a sealing mode and can rotate relative to the connecting piece (2); the driving motor (11) is positioned in the driving ring sleeve (1) and drives the grouting pipe (3) to rotate through the transmission mechanism.

4. The formation strengthening apparatus of claim 3, wherein: the transmission mechanism comprises a driving gear (12) arranged on an output shaft of the driving motor (11) and a driven gear (32) fixed on the grouting pipe (3), and the driven gear (32) is meshed with the driving gear (12).

5. A formation strengthening device according to claim 3 or 4, wherein: and a limiting ring (33) matched with the driving ring sleeve (1) is arranged on the grouting pipe (3), and sealing parts (13) are arranged between the limiting ring (33) and the driving ring sleeve (1) and between the connecting piece (2) and the grouting pipe (3).

6. The formation strengthening apparatus of claim 5, wherein: corresponding cable hole grooves (52) are formed in the connecting piece (2) and the guide rod (5), and a fixing piece (51) matched with the cable hole grooves (52) is arranged on the guide rod (5).

7. The formation strengthening device of claim 6, wherein: one end of the driving ring sleeve (1) facing the guide rod (5) is a conical surface, and the conical surface is in smooth transition connection with the guide rod (5); the connecting piece (2) is a tubular piece, the inlet end of the grouting pipe (3) is embedded in a tubular piece, and the inlet end of the tubular piece is sleeved in the guide rod (5).

8. The formation strengthening device of claim 1, wherein: slip casting pipe (3) and guide bar (5) fixed connection, actuating mechanism and guide bar (5) transmission are connected, and actuating mechanism drives slip casting pipe (3) through guide bar (5) and rotates.

9. A formation strengthening device according to claim 1, 7 or 8, wherein: the grouting pipe (3) is a blind pipe, and the open end of the blind pipe is correspondingly connected with the guide rod (5).

10. A formation strengthening system, comprising: comprising a drilling machine (50), a pullback and power supply device (30) and the ground reinforcing device (10) as claimed in any one of claims 1 to 9; a drilling machine (50) applies a guide rod (5) to a receiving well (40) from a working well (7), a stratum reinforcing device (10) is installed on the guide rod (5), and a grouting device (20) located in the receiving well (40) performs grouting into the guide rod (5) and a pull-back and power supply device (30) located in the receiving well (40) performs pull-back on the guide rod (5).