阅读说明：本技术 注浆止水方法 (Grouting water stopping method ) 是由 廖宝成 陈毅斌 王清顺 廖鸿鹏 于 2020-06-30 设计创作，主要内容包括：本公开实施例中提供了一种注浆止水方法,所述注浆止水方法包括如下步骤：对待修复管道进行气囊封堵；对待修复管道进行抽水清淤处理；根据漏水位置的漏水情况在漏水孔边缘打入注浆管并连接好注浆管线,进行第一次注浆堵漏操作；待漏水孔处的漏水量减小,在漏水孔部位安装堵漏件,采用堵漏件对漏水孔部位进行支撑封堵；安装完堵漏件后对漏水孔部位进行二次注浆。本公开实施例中的注浆止水方法主要采用封堵件对漏水部位进行支撑封堵,避免了在外部水压大的情况下将漏水部位冲破的情况,以及避免在进行补漏时,水压过大冲走注浆料的情况。(The embodiment of the disclosure provides a grouting water stopping method, which comprises the following steps: carrying out air bag plugging on the pipeline to be repaired; carrying out water pumping and dredging treatment on the pipeline to be repaired; according to the water leakage condition of the water leakage position, a grouting pipe is driven into the edge of the water leakage hole and connected with a grouting pipeline, and the first grouting and leakage blocking operation is carried out; when the water leakage amount at the water leakage hole is reduced, a leakage blocking piece is arranged at the water leakage hole, and the water leakage hole is supported and blocked by the leakage blocking piece; and after the leakage blocking piece is installed, secondary grouting is carried out on the water leakage hole part. The grouting water stopping method in the embodiment of the disclosure mainly adopts the plugging piece to support and plug the water leakage part, thereby avoiding the situation that the water leakage part is broken under the condition of large external water pressure and avoiding the situation that the grouting material is flushed away by overlarge water pressure when leakage repairing is carried out.)

1. A grouting water stopping method is characterized by comprising the following steps:

positioning the water leakage position of the pipeline to be repaired needing to be subjected to leakage stoppage;

carrying out air bag plugging on the pipeline to be repaired;

carrying out water pumping and dredging treatment on the pipeline to be repaired;

according to the water leakage condition of the water leakage position, a grouting pipe is driven into the edge of the water leakage hole and connected with a grouting pipeline, and the first grouting and leakage blocking operation is carried out;

when the water leakage amount at the water leakage hole is reduced, a leakage blocking piece is arranged at the water leakage hole, and the water leakage hole is supported and blocked by the leakage blocking piece;

and after the leakage blocking piece is installed, secondary grouting is carried out on the position of the water leakage hole, whether the slurry at the position of the water leakage hole is filled and the water leakage condition of the water leakage hole is observed, if the slurry is filled in the water leakage hole and the water leakage hole is not leaking, grouting and leakage blocking operation is finished, and if the slurry is not filled in the water leakage hole or the water leakage hole still has the water leakage condition, the grouting and leakage blocking operation is continuously carried out on the water leakage hole until the slurry is filled in the water leakage hole or the water leakage hole stops leaking.

2. The grouting water stopping method according to claim 1, wherein the step of pumping and dredging the pipeline to be repaired further comprises the following steps:

detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired;

and when the pipeline condition of the pipeline to be repaired meets the preset requirement, detecting the water leakage position.

3. The grouting water stopping method according to claim 2, wherein the step of detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired comprises the steps of:

and detecting the interior of the pipeline at the position to be repaired by adopting closed circuit television system CCTV equipment to obtain the pipeline condition of the pipeline to be repaired.

4. The grouting water stopping method according to claim 2, wherein the pipe conditions of the pipe to be repaired include the pipe diameter of the pipe to be repaired, the water leakage hole diameter of the water leakage position of the pipe to be repaired, and whether the pipe at the water leakage position of the pipe to be repaired collapses or not, which are obtained by detecting the pipe to be repaired by using CCTV equipment.

5. The grouting water stopping method according to claim 1, wherein the leakage blocking piece is a self-locking steel ring.

6. The grouting water stopping method according to claim 5, wherein the inner surface and the outer surface of the self-locking steel ring are rust-removing and corrosion-preventing.

7. The grouting water stopping method according to claim 5, wherein the self-locking steel ring comprises an expansion steel ring and a waterproof rubber ring, the expansion steel ring is arranged in the waterproof rubber ring to support the waterproof rubber ring, the two rolling ends of the expansion steel ring are arranged in a relatively movable manner, a sliding rail is arranged on the inner wall of the expansion steel ring along the circumferential direction, and a self-locking piece is arranged on the sliding rail.

8. The grouting water stopping method according to any one of claims 1 to 7, characterized in that the leakage stopping piece is a double expansion ring.

9. The grouting water stopping method according to any one of claims 1 to 7, wherein the pipe diameter of the pipeline to be repaired is 800 to 3000 mm.

Technical Field

The disclosure relates to the technical field of pipeline repair, in particular to a grouting water stopping method.

Background

After the concrete water supply pipeline runs for a certain time, the water leakage phenomenon of different degrees occurs due to various reasons, and certain influence is brought to the water supply quality; when the water leakage is serious, the water supply safety can be seriously threatened, and the repair is necessary. At present, the commonly used concrete water supply pipeline repairing method generally comprises a traditional lining method, an interlining method, a composite material overturning lining method, a coating method and the like.

The traditional lining method, also called pipe inserting method, is the earliest method for repairing the trenchless underground pipeline and is suitable for repairing various underground pipelines. During construction, a new pipe with a small diameter is directly inserted or pulled into the old pipe, and annular grouting is performed between the new pipe and the old pipe for consolidation. The new pipe can be a continuous long pipe formed by welding polyethylene pipes in a butt joint mode in advance, or can be a section-by-section short plastic pipe or a glass steel pipe, and the new pipe is respectively conveyed into the old pipe after being connected in the working pits. The traditional lining method has the advantages of simplicity, feasibility and low construction cost; the main disadvantage is that the repaired pipeline has large loss of the flow section.

The interlining method is to temporarily reduce the diameter of the inner lining pipe and then insert the inner lining pipe into the pipeline to be repaired, and then restore the diameter of the inner lining pipe to form a tight fit with the old pipe. The method has the advantages that: grouting is not needed, and the construction speed is high; the loss of the flow cross section is very small; the device can adapt to a bent pipe with a larger curvature radius; long-distance repair can be realized, and the number of joints is small or even none; the construction can be carried out in the excavated working pit or manhole. The disadvantages are that: the branch pipe joint needs to be excavated; the structural damage of the old pipe can cause construction difficulty; different methods have different technical requirements on the operator.

The composite material turning lining method is that hose material is transported to site, and the hose material is turned over and transferred to pipeline under the pressure of water and air to make the hose material cling to the inner wall of the pipeline. The method has the advantages that: the construction speed is high; no joint, smooth surface and good fluidity; the pipe fitting can adapt to non-circular sections, bent pipe sections and places with small deformation; the existing manhole or a small amount of excavation can be used as an entrance; no annular space is arranged between the new pipe and the old pipe, and the new pipe has the functions of corrosion resistance and permeability resistance. The disadvantages are that: special construction equipment is needed, and the requirement on the quality of workers is high; the cost is higher when the engineering scale is small; during construction, the infiltration of groundwater must be controlled and the liner must withstand the pressure along with the old pipe.

The repairing method mainly aims at repairing the water supply pipeline with the diameter of less than 1 meter, and the large-diameter water supply pipeline has large diameter, so that the repairing material has large bearing pressure, the construction environment is complex, and almost no mature repairing method exists. Due to the limitation of environmental conditions, the method is not good in repairing effect, low in durability, slow in repairing speed and too high in repairing and maintaining cost, and the leaking port can be broken by large external water pressure after a long time.

Disclosure of Invention

In view of this, the disclosed embodiments provide a grouting water stopping method, which at least partially solves the problems in the prior art.

In a first aspect, an embodiment of the present disclosure provides a grouting water stopping method, which includes the following steps:

positioning the water leakage position of the pipeline to be repaired needing to be subjected to leakage stoppage;

carrying out air bag plugging on the pipeline to be repaired;

carrying out water pumping and dredging treatment on the pipeline to be repaired, and detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired;

when the pipeline condition of the pipeline to be repaired meets the preset requirement, detecting the water leakage position;

according to the water leakage condition of the water leakage position, a grouting pipe is driven into the edge of the water leakage hole and connected with a grouting pipeline, and the first grouting and leakage blocking operation is carried out;

when the water leakage amount at the water leakage hole is reduced, a leakage blocking piece is arranged at the water leakage hole, and the water leakage hole is supported and blocked by the leakage blocking piece;

and after the leakage blocking piece is installed, secondary grouting is carried out on the position of the water leakage hole, whether the slurry at the position of the water leakage hole is filled and the water leakage condition of the water leakage hole is observed, if the slurry is filled in the water leakage hole and the water leakage hole is not leaking, grouting and leakage blocking operation is finished, and if the slurry is not filled in the water leakage hole or the water leakage hole still has the water leakage condition, the grouting and leakage blocking operation is continuously carried out on the water leakage hole until the slurry is filled in the water leakage hole or the water leakage hole stops leaking.

According to a specific implementation manner of the embodiment of the present disclosure, the step of performing water pumping and dredging treatment on the pipeline to be repaired further includes:

detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired;

and when the pipeline condition of the pipeline to be repaired meets the preset requirement, detecting the water leakage position.

According to a specific implementation manner of the embodiment of the present disclosure, the step of detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired includes:

and detecting the interior of the pipeline at the position to be repaired by adopting closed circuit television system CCTV equipment to obtain the pipeline condition of the pipeline to be repaired.

According to a specific implementation manner of the embodiment of the disclosure, the pipeline condition of the pipeline to be repaired comprises that the CCTV equipment is used for detecting the pipeline to be repaired to obtain the aperture size of the pipeline to be repaired, the water leakage aperture size of the water leakage position of the pipeline to be repaired, and whether the pipeline at the water leakage position of the pipeline to be repaired sinks or not, and the pipeline condition of the pipeline to be repaired comprises that the CCTV equipment is used for detecting the pipeline to be repaired to obtain the aperture size of the pipeline to be repaired, the water leakage aperture size of the water leakage position of the pipeline to be repaired, and whether the pipeline at the water leakage position of the pipeline to be repaired sinks or not.

According to a specific implementation manner of the embodiment of the disclosure, the leakage blocking piece is a self-locking steel ring.

According to a specific implementation mode of the embodiment of the disclosure, the inner surface and the outer surface of the self-locking steel ring are subjected to rust removal and corrosion prevention.

According to a specific implementation mode of the embodiment of the disclosure, the self-locking steel ring comprises an expansion steel ring and a waterproof rubber ring, the expansion steel ring is arranged in the waterproof rubber ring and internally supports the waterproof rubber ring, and the self-locking device is characterized in that two rolling ends of the expansion steel ring are arranged in a relatively movable mode, a sliding rail is arranged on the inner wall of the expansion steel ring along the circumferential direction, and a self-locking piece is arranged on the sliding rail.

According to a specific implementation manner of the embodiment of the disclosure, the leakage blocking piece is a double expansion ring.

According to a specific implementation manner of the embodiment of the disclosure, the pipe diameter of the pipeline to be repaired is 800-3000 mm.

The grouting water stopping method in the embodiment of the disclosure comprises the following steps:

positioning the water leakage position of the pipeline to be repaired needing to be subjected to leakage stoppage;

carrying out air bag plugging on the pipeline to be repaired;

carrying out water pumping and dredging treatment on the pipeline to be repaired, and detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired;

when the pipeline condition of the pipeline to be repaired meets the preset requirement, detecting the water leakage position;

according to the water leakage condition of the water leakage position, a grouting pipe is driven into the edge of the water leakage hole and connected with a grouting pipeline, and the first grouting and leakage blocking operation is carried out;

when the water leakage amount at the water leakage hole is reduced, a leakage blocking piece is arranged at the water leakage hole, and the water leakage hole is supported and blocked by the leakage blocking piece;

and after the leakage blocking piece is installed, secondary grouting is carried out on the position of the water leakage hole, whether the slurry at the position of the water leakage hole is filled and the water leakage condition of the water leakage hole is observed, if the slurry is filled in the water leakage hole and the water leakage hole is not leaking, grouting and leakage blocking operation is finished, and if the slurry is not filled in the water leakage hole or the water leakage hole still has the water leakage condition, the grouting and leakage blocking operation is continuously carried out on the water leakage hole until the slurry is filled in the water leakage hole or the water leakage hole stops leaking.

The grouting water stopping method in the embodiment of the disclosure mainly adopts the plugging piece to support and plug the water leakage part, thereby avoiding the situation that the water leakage part is broken under the condition of large external water pressure and avoiding the situation that the grouting material is flushed away by overlarge water pressure when leakage repairing is carried out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a self-locking steel ring used in a grouting water-stopping method provided by an embodiment of the present disclosure;

fig. 2 is another schematic structural diagram of a self-locking steel ring used in a grouting water stopping method according to an embodiment of the present disclosure;

fig. 3 is another schematic structural diagram of a self-locking steel ring used in a grouting water stopping method according to an embodiment of the present disclosure.

10-expansion steel ring, 20-waterproof rubber ring, 30-self-locking piece, 11-sliding rail, 12-rack, 13-rolling end, 31-sliding block, 32-guide gear, 33-locking gear, 321-sliding hole groove and 322-sliding cap.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the disclosure provides a grouting water stopping method.

Referring to fig. 1, a grouting water stopping method provided by the embodiment of the present disclosure includes the following steps:

positioning the water leakage position of the pipeline to be repaired needing to be subjected to leakage stoppage;

carrying out air bag plugging on the pipeline to be repaired;

carrying out water pumping and dredging treatment on the pipeline to be repaired, and detecting the pipeline to be repaired to obtain the pipeline condition of the pipeline to be repaired;

when the pipeline condition of the pipeline to be repaired meets the preset requirement, detecting the water leakage position;

according to the water leakage condition of the water leakage position, a grouting pipe is driven into the edge of the water leakage hole and connected with a grouting pipeline, and the first grouting and leakage blocking operation is carried out;

when the water leakage amount at the water leakage hole is reduced, a leakage blocking piece is arranged at the water leakage hole, and the water leakage hole is supported and blocked by the leakage blocking piece;

and after the leakage blocking piece is installed, secondary grouting is carried out on the position of the water leakage hole, whether the slurry at the position of the water leakage hole is filled and the water leakage condition of the water leakage hole is observed, if the slurry is filled in the water leakage hole and the water leakage hole is not leaking, grouting and leakage blocking operation is finished, and if the slurry is not filled in the water leakage hole or the water leakage hole still has the water leakage condition, the grouting and leakage blocking operation is continuously carried out on the water leakage hole until the slurry is filled in the water leakage hole or the water leakage hole stops leaking.

In the embodiment of the disclosure, the water leakage part is supported and blocked by the blocking piece, so that the situation that the water leakage part is broken under the condition of large external water pressure is avoided, and the situation that the grouting material is flushed away by overlarge water pressure when leakage repairing is carried out is avoided.

Specifically, before the plugging operation is performed, the condition in the pipeline is investigated. The method comprises the steps of firstly positioning the water leakage position of the pipeline to be repaired needing to be subjected to leakage stoppage, and judging the water leakage position through observation for the large pipe diameter with serious water leakage condition. And positioning the water leakage position, and roughly determining a water leakage repair scheme according to the water leakage condition of the water leakage position.

The air bag is adopted for plugging the upstream and the downstream of the pipeline to be repaired, and the high-pressure water pump is adopted for pumping water and dredging the pipeline to be repaired after the air bag is plugged, so that the pipeline to be repaired is cleaned up to facilitate the leakage plugging operation of workers in the pipeline.

The pipeline after processing adopts CCTV equipment to detect, treats the interior condition of pipeline of restoreing the pipeline and surveys through CCTV pipeline check out test set, can treat whether desilting is clean in the pipeline of restoreing the pipeline through CCTV equipment detection, surveys the pipeline internal diameter of treating the restoration pipeline through CCTV equipment, is convenient for adopt the steel ring that is slightly littleer than the pipeline internal diameter of treating the restoration pipeline to carry out the shutoff when carrying out the shutoff. In addition, the water leakage condition of the water leakage position of the pipeline to be repaired, the size of the water leakage hole diameter, the pipeline condition of the water leakage position and the like can be obtained through CCTV equipment. The information obtained through CCTV equipment survey facilitates the subsequent prejudgment of constructors at the water leakage position.

If the CCTV equipment detects that the pipeline collapse condition occurs around the water leakage position of the pipeline to be repaired, the pipeline collapse condition around the water leakage position is firstly surveyed before the water leakage position is plugged, and whether the collapse condition at the position needs to be repaired in an emergency or not is judged. If the collapse position possibly has influence on the water leakage blocking condition of the water leakage position, the collapse position is repaired firstly. The repair steel ring is selected according to the severity of the collapse condition. For example, when the collapse is serious, a plurality of sections of short steel rings are adopted to fix the periphery of the collapse once, and then a strong steel ring is selected to be fixed at the position of the collapse in a reinforcing mode. When the collapse is slight, only a small number of short steel rings are selected to be fixed on the periphery of the collapse at one time.

The general scheme of plugging operation is obtained according to the pipeline condition detected by CCTV equipment. For the water leakage condition of the large-diameter pipeline, the embodiment selects to firstly adopt grouting material to perform one-side leaking stoppage operation at the water leakage hole of the water leakage part, and firstly selects a proper position to drive into the grouting pipe before grouting and is connected with the grouting pipeline. It should be noted that, the selection of the position of the grouting pipe should avoid the situation that the periphery of the water leakage position may collapse, after the setting of the grouting pipe and the grouting pipeline is completed, the first grouting leakage stopping operation is performed on the water leakage hole, the first grouting leakage stopping operation only needs to ensure that the amount of water leakage is reduced along with the injection and filling of the slurry, when the amount of water leakage is reduced, the leakage stopping piece is further installed at the water leakage position, the leakage stopping piece is used for supporting at the water leakage position, and further the water leakage hole at the water leakage position is blocked, so that the amount of water leakage at the position is further reduced, the continuous scouring of the amount of water leakage is avoided, the slurry thrown into the water leakage position is flushed away, and the leaking stopping effect is influenced, and manpower and material resources are wasted.

After the plugging piece is installed, slurry is further injected into the water leakage position, the water leakage position is further plugged, water leakage is prevented, and the water leakage plugging effect is improved. And after the slurry is injected for the second time, observing whether the slurry at the water leakage hole is filled up, and stopping continuous grouting if the slurry is filled up in the water leakage hole. Or observing the water leakage condition at the water leakage hole, and stopping grouting if water leakage stops at the water leakage hole.

The grouting water stopping method disclosed by the embodiment of the disclosure is mainly applied to water leakage repair of a large-pipe-diameter pipeline, and the pipe diameter of the pipeline is preferably 800-3000 mm.

The leakage blocking part in the embodiment of the present disclosure is a self-locking steel ring, the self-locking steel ring includes an expansion steel ring 10, a waterproof rubber ring 20 and a self-locking part 30, the expansion steel ring 10 is disposed in the waterproof rubber ring 20 to support the waterproof rubber ring 20, two rolling ends 13 of the expansion steel ring 10 are disposed to be capable of moving relatively, a slide rail 11 is disposed on an inner wall of the expansion steel ring 10 along a circumferential direction, and the self-locking part 30 is disposed on the slide rail 11. Slide rail 11 sets up to two in expansion steel ring 10 inner wall symmetry, sets up to two from locking piece 30 corresponding slide rail 11, and from locking piece 30 can slide on slide rail 11 when expansion steel ring 10 radius expansion, thereby from locking piece 20 can make two roll-up end 13 of expansion steel ring 10 stop relative motion when expansion steel ring 10 radius shrink and lock expansion steel ring 10.

Referring to fig. 1 to 3, the self-locking member 30 includes a sliding block 31, and a guide gear 32 and two locking gears 33 disposed in the sliding block 31, the two locking gears 33 are symmetrically arranged on both sides of the guide gear 32, the guide gear 32 and the two locking gears 33 are interlocked to realize gapless engagement when the expansion steel ring 10 is in a locking state, the guide gear 32 is slidably connected to an outer end of the rolling end 13 of the expansion steel ring 10 through a sliding hole slot 321 and a sliding cap 322, the guide gear 32 can drive the sliding block 31 to slide on the sliding rail 11 when the radius of the expansion steel ring 10 expands, both sides of the sliding rail 11 are provided with racks 12, the two locking gears 33 can be engaged with the racks 12, and the locking gears 33 can slide along the sliding rail 11 when the radius of the expansion steel ring 10 expands.

In the working process, the waterproof rubber ring 20 is very elastic and can synchronously expand and retract along with the expansion of the expansion steel ring 10, at the moment, the guide gear 32 in the self-locking piece 30 moves along with the rolling end 13 of the expansion steel ring 10 to drive the self-locking piece 30 to slide on the inner wall of the expansion steel ring 10, when the radius of the expansion steel ring 10 is in a contraction state, the guide gear 32 moves reversely and is meshed between the two locking gears 33 without a gap, so that the guide gear 32 cannot rotate, at the moment, the locking gear 33 and the rolling end 13 of the expansion steel ring 10 are locked through the guide gear 32, the retraction of the expansion steel ring 10 is avoided, and the whole expansion steel ring 10 is firmly in a locking state. The self-locking steel ring is placed at a leakage position of a pipeline, when the inflatable bag is used for rapidly inflating, the expanding steel ring 10 is rapidly expanded and expanded, the pipe diameter is rapidly increased, so that the waterproof rubber ring 20 is in contact with and extruded with a crack position on the inner wall of the pipeline to form sealing, a water source of a leakage point is cut off, and rapid repair of the inner leakage is realized.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.