CN114215994A - Pipeline repairing construction method - Google Patents
Pipeline repairing construction method Download PDFInfo
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- CN114215994A CN114215994A CN202111530736.6A CN202111530736A CN114215994A CN 114215994 A CN114215994 A CN 114215994A CN 202111530736 A CN202111530736 A CN 202111530736A CN 114215994 A CN114215994 A CN 114215994A
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0322—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid in combination with a plug, e.g. inflatable mole, to isolate a part of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/035—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing by suction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/1612—Devices for covering leaks in pipes or hoses, e.g. hose-menders by means of a plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
- F16L55/1654—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section and being inflated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a pipeline repairing construction method, which comprises the following steps: carrying out water plugging and dredging on the pipeline; the release detection robot detects the interior of the pipeline, and collects and stores video image data of the pipeline; judging the damage degree of the pipeline and reinforcing the damaged part of the pipeline according to the video image data and the construction drawing; and paving a quick lattice pad in the pipeline, and grouting to fill a gap between the quick lattice pad and the pipeline. The pipeline repairing construction method can enable the pipeline to form a pipe-in-pipe structure, so that the underground pipeline which is damaged or loses the conveying function is repaired in situ, the pipeline does not need to be excavated and repaired, the adverse effect on the society and the environment is small, and the influence on the traffic and the trip of people is small.
Description
Technical Field
The invention relates to the technical field of pipeline construction, in particular to a pipeline repairing construction method.
Background
With the development of cities, water drainage facilities in urban public environments are also gaining attention. In the process of urban underground pipeline construction and maintenance, the phenomena of structural damage, pipeline breakage, water leakage and the like of a plurality of pipelines are found, and pipeline facilities need to be repaired.
In the related technology, aiming at the reconstruction of old urban pipeline facilities, the most common repair method is excavation repair at present, although the excavation repair can also meet the reconstruction of pipelines, in dense population areas built in cities, the excavation construction causes various adverse effects on the society and the environment, and brings much inconvenience to traffic and people going out.
Therefore, it is necessary to design a new pipeline repairing method to overcome the above problems.
Disclosure of Invention
The embodiment of the invention provides a pipeline repairing construction method, which aims to solve the problems that in the related technology, excavation construction in dense population areas built in cities causes various adverse effects on society and environment, and brings inconvenience to traffic and people's trips.
In a first aspect, a pipeline repairing construction method is provided, which comprises the following steps: carrying out water plugging and dredging on the pipeline; the release detection robot detects the interior of the pipeline, and collects and stores video image data of the pipeline; judging the damage degree of the pipeline and determining a corresponding repair scheme according to the video image data and the construction drawing; reinforcing the damaged part of the pipeline; and paving a quick lattice pad in the pipeline, and grouting to fill a gap between the quick lattice pad and the pipeline.
In some embodiments, the dredging the pipeline with water shutoff comprises: plugging all water inlets and water outlets of the pipeline in an air bag or cofferdam mode; and flushing the sediment in the pipeline into a downstream inspection well by using high-pressure water, and sucking the sediment away by using a sewage suction pump.
In some embodiments, after flushing the sediment in the pipeline into a downstream inspection well by using high-pressure water and sucking the sediment away by using a sewage suction pump, the method further comprises the following steps: a steel cleaner is adopted to clean and pull the stones in the pipeline into the inspection well, and the stones are manually cleaned and transported out of the pipeline; or the high-pressure water and the cutting spray head are adopted to cut off the sundries in the pipeline and then the pipeline is transported out; or driving the cleaning robot to enter the pipeline for cleaning construction.
In some embodiments, the reinforcing the damaged portion of the pipeline includes: drawing a liner tube into the conduit; inflating and maintaining the pressure of the lining pipe; placing a baking lamp in the lining tube; and driving the baking lamp to move from one end of the lining pipe to the other end at a preset speed, so that the lining pipe and the pipeline are gradually solidified.
In some embodiments, after said drawing the liner tube into the conduit, further comprises: and tying a plug at one end of the lining tube, tying a tying head at the other end of the lining tube, and simultaneously enabling a traction wire for drawing the baking lamp to penetrate out of the plug and the tying head.
In some embodiments, after the placing the baking lamp into the inner lining tube, further comprising: and inflating and maintaining the pressure of the lining pipe for a preset time.
In some embodiments, the determining the damage degree of the pipeline and reinforcing the damaged portion of the pipeline according to the video image data and the construction drawing includes: repairing the disjointed and cracked parts by adopting a dotted in-situ curing method, a rubber double-expansion ring method or a lining steel plate method; repairing the leaked part by adopting a punctiform in-situ curing method or chemical grouting leaking stoppage; and adopting waterproof mortar to repair the staggered parts.
In some embodiments, the determining the damage degree of the pipeline and reinforcing the damaged portion of the pipeline according to the video image data and the construction drawing further includes: and if detecting that the base layer of the pipeline has a cavity, spraying cement mortar for preventing the base layer soil body of the pipeline from being solidified.
In some embodiments, the laying of a rapid lattice mat within the pipeline and grouting to fill a gap between the rapid lattice mat and the pipeline includes: drawing the speed check pad from one end of the pipe into the pipe; fixing the quick lattice pad and the inner wall of the pipeline, and installing a grouting pipe between the quick lattice pad and the inner wall of the pipeline; and injecting grout into the grouting pipe, enabling the grout to flow into a gap between the quick grid pad and the pipeline along the grouting pipe, and fixing the quick grid pad and the pipeline into a whole.
In some embodiments, before injecting grout into the grout pipe, so that the grout flows along the grout pipe to a gap between the quick-check mat and the pipeline and fixing the quick-check mat and the pipeline as a whole, the method further includes: installing sealing elements at two ends of the pipeline; and injecting water into a cavity defined by the quick lattice pads to enable the quick lattice pads to fill the pipeline.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a pipeline repairing construction method, wherein a detection robot can enter from one end of a pipeline to automatically detect the condition inside the pipeline so as to determine the damaged position of the pipeline, reinforcement treatment can be carried out on the corresponding part of the pipeline, and a quick lattice mat laid in the pipeline further enables the pipeline to form a 'pipe-in-pipe' structure, so that the underground pipeline which is damaged or loses the conveying function is repaired in situ, therefore, the pipeline does not need to be excavated and repaired, the adverse effect on the society and the environment is small, and the influence on the traffic and the travel of people is small.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a pipeline repairing construction method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a pipeline repairing construction method, which can solve the problems that in the related art, excavation construction in a dense population area built in a city causes various adverse effects on the society and the environment, and brings inconvenience to traffic and people going out.
Referring to fig. 1, a pipeline repairing construction method provided in an embodiment of the present invention may include the following steps:
step 1: and (5) plugging water and dredging the pipeline.
In some embodiments, before step 1, preparation before construction may also be performed, which may specifically include the following steps: determining a pipeline section to be constructed by combining a site according to a construction drawing; arranging warning marks in a construction area, and making traffic flow guidance; preparing materials, mechanical equipment and tools required in the construction process; before the construction begins, the pipeline is firstly ventilated by blowing air, harmful gas detection is carried out after ventilation is finished, and after safety is determined, a constructor can carry out downhole operation.
Further, in step 1, the water plugging and dredging of the pipeline may include: before construction, water plugging operation can be carried out, namely, all water inlets and water outlets at two ends of the pipeline are plugged in an air bag or cofferdam mode, and water in the pipeline can be pumped out by a sewage suction pump at the downstream of the pipeline to expose sludge in the pipeline; after plugging is completed, sludge can be loosened by a mechanical winch (specifically, the mechanical winch passes through a pipeline section needing dredging by a TT piece, steel wire ropes are tied at two ends of the TT piece, 1 winch is respectively arranged on each of two inspection wells at two ends of the dredging pipeline section, the other ends of the two steel wire ropes are tied on the winch, the winch is used for reciprocating and winching the steel wire ropes to drive the TT piece to scrape sludge into a downward inspection well, so that the pipeline is cleared), sediment in the pipeline is flushed into a downstream inspection well by high-pressure water, meanwhile, a vacuum sewage suction pump can be started, the sediment flushed out by high pressure is sucked into a sealed tank car by the sewage suction pump, namely, the hydraulic flushing vehicle is used for clearing the pipeline, and the procedure can be repeatedly carried out until the pipeline is flushed completely. Wherein, after the deposit with in the pipeline suction is clean, the mode of artifical cleaning of going into the well can be taken to the residue, need carry out gas detection before the artifical operation of going into the well, but detects qualified rear portion and go into the well and dredge the residue.
In some embodiments, in step 1, after the sediment in the pipeline is flushed into a downstream inspection well by using high-pressure water and the sediment is sucked away by using a sewage suction pump, the following method can be further adopted for cleaning and dredging treatment of the foreign matters which cannot be removed in the pipeline: for example, for larger stones, concrete blocks and the like, a special steel cleaner can be adopted to clean and pull the stones in the pipeline into the inspection well and manually clean and transport the stones out of the pipeline; or for the deposited concrete, high-pressure water can be adopted, a special chain type cutting spray head is utilized to cut off sundries in the pipeline, and then the pipeline is transported out; or under the condition that the condition allows, the cleaning robot can be driven to enter the pipeline for cleaning construction; when the pipe diameter of pipeline is greater than 800mm, under the condition of safety guarantee, can artifically get into the pipeline from the one end of pipeline and clear up the mediation construction.
Step 2: and the releasing detection robot detects the interior of the pipeline, and collects and stores video image data of the pipeline.
Specifically, in step 2, after the pipeline is cleaned, CCTV detection can be performed on the pipeline, specifically including a detection robot that releases the pipeline, so that the detection robot moves along the pipeline and detects the inside of the pipeline, and in the detection process, the detection robot can shoot the inside of the pipeline and transmit the shot video or picture to an external computer to collect and store the image data of the pipeline.
And step 3: and judging the damage degree of the pipeline and reinforcing the damaged part of the pipeline according to the video image data and the construction drawing.
In step 3, before reinforcing the damaged part of the pipeline, according to the video image data and the construction drawing, if a part with serious water leakage, damage, crack and the like is found, pre-treating with cement paste or a quick plugging material, and then passing through the inner wall of the pipeline with serious scale at a low speed by using a pipe cleaner to thoroughly clean the scale and the deposit attached to the inner wall, wherein the residual water and the debris on the inner wall of the pipeline can be cleaned by using a plunger device through the inner wall of the pipeline.
After pretreatment, if foreign matters which cannot be removed exist in the pipe, the following method can be adopted for cleaning and dredging treatment:
the method comprises the following steps of firstly, cleaning and pulling large stones, concrete blocks and the like into an inspection well by adopting a special steel cleaner, and then manually cleaning and transporting the large stones, the concrete blocks and the like out of a pipeline.
Secondly, the deposited concrete, the tree roots and the like can be cut off by high-pressure water by using a special chain type equal cutting nozzle and then are transported out of the pipeline.
And thirdly, under the condition of permission, a special robot can be adopted to enter the pipeline for cleaning construction.
Fourthly, when the pipe diameter is larger than 800mm, the pipe can be manually fed into the pipeline to be cleaned and dredged under the condition of safety guarantee.
In step 3, when the pipeline structure does not meet the relevant specifications and design requirements, a corresponding method should be first adopted to perform reinforcement processing on the pipeline structure, where the reinforcement processing on the damaged portion of the pipeline may include: measuring the diameter of the pipeline to be repaired according to a drawing and on-site detection records, measuring the distance between inspection wells at two ends of the pipeline to be repaired, and inspecting the structure of the inspection wells at two ends of the pipeline to be repaired, wherein the pipeline to be repaired is modified in advance if the pipeline to be repaired needs to be modified; ordering materials from a CIPP material supplier according to field measurement data, the CIPP being tailored for each location; after the CIPP material is placed on a construction site, a bottom film is laid on the ground, and the CIPP lining pipe is folded and bundled by the bottom film; then pulling the liner tube into the conduit; inflating and maintaining the pressure of the lining pipe, wherein the pressure can be controlled at 0.2MPa, and the pressure maintaining time is controlled at about four and fifty minutes; after the pressure maintaining is completed, a baking lamp can be placed in the lining tube; and driving the baking lamp to move from one end of the lining pipe to the other end at a preset speed, so that the lining pipe and the pipeline are gradually cured, wherein in the step, the moving speed of the baking lamp can be controlled to be 0.3-1 m/min, the temperature can be kept at 80-120 ℃ during curing, in addition, an ultraviolet lamp is preferably selected as the baking lamp, the baking lamp is automatically pulled to move forwards through equipment, the ultraviolet lamp is adopted to irradiate the lining pipe, the time for curing a section of pipeline with the length of 40 m is 40-50 min, the construction time is short, the repair material, the thickness and the length can be randomly selected according to different field conditions, and the construction flexibility is high. In the embodiment, different from excavation repair construction, the CIPP ultraviolet curing trenchless repair construction method has the characteristics of high construction speed, short construction period, no need of excavation of earthwork, low noise, little influence on environment, no generation of garbage, no traffic jam, small carbon dioxide emission, change and improvement of the overall image of pipeline construction and the like, greatly reduces the disturbing factor, meets the environmental protection requirement, and is also beneficial to later maintenance of facilities. The CIPP lining material has the advantages of corrosion resistance, wear resistance and the like, has high material strength, can be used for 50 years to the maximum extent according to the design, and completely solves the problem of groundwater infiltration of pipelines.
When the lining pipe is pulled into the pipeline, one end of the traction wire can be firstly sent into an inspection well of the pipeline by a robot, then the traction wire is taken out from the inspection well at the other end of the pipeline, one end of the traction wire is tied on a winch, the other end of the traction wire is connected with the lining pipe, and the lining pipe is pulled into the pipeline by the winch. During construction, 3 engineering vehicles can realize the curing process, the occupied road area is small (the planned occupied road area is a rectangular area which is at the position of the side of the inspection well, 2.5m wide and 12m long), and the noise is small; the inner lining pipe and the pipeline can bear 0.1MPa of external water pressure together, the water tightness is high, the curing method can be used for repairing circular or non-circular section pipelines, is suitable for repairing DN150-DN1600 pipe diameter pipelines, can repair defects including pipeline collapse, deformation, disjunction, leakage, corrosion and the like, has no limit on the length of the repaired pipeline, and can flexibly cut according to the actual length of the pipeline to be repaired in the construction process.
Further, the lining pipe can be composed of single-layer or multi-layer polyester fiber felt or materials with the same performance, and the lining pipe is compatible with the used resin and can bear the tension, pressure and curing temperature of construction; the outer surface of the lining pipe is covered with a layer of impermeable plastic film compatible with the adopted resin; joints of all layers of the lining pipe are staggered, and the joint connection is firm; the transverse and longitudinal tensile strength of the lining pipe is not lower than 5 MPa; the glass fiber reinforced fiber lining pipe at least comprises two interlayers, the inner surface of the lining pipe is a polyester felt layer and a styrene inner film group, and the outer surface of the lining pipe is a single-layer or multi-layer styrene-resistant or opaque film; the length of the lining pipe is larger than that of the pipeline to be repaired, and the diameter of the lining pipe is ensured to be tightly attached to the inner wall of the original pipeline after being solidified.
CCTV camera detection system can be installed to the foremost end of ultraviolet lamp stand, can carry out the whole journey to the pipeline condition and observe in the construction. The protective bottom film on the outer side of the lining pipe can be removed after construction, so that garbage can not be attached to the pipe wall due to unsmooth pipe wall in future pipeline use, the roughness coefficient is smaller than that of the reinforced concrete pipe, and the flow speed can be properly increased to increase the flow. The repair material CIPP used in the photocuring method contains glass fiber as a reinforcing material, almost does not shrink after hardening, and continuously introduces cooling and drying compressed air in the hardening process, so that dislocation and other phenomena do not occur between the hardened inner lining pipe orifice and the orifice part of the existing pipeline after the inner lining pipe orifice is hardened by cooling while hardening, and the inner lining pipe enters a stable period 2 hours after being formed.
Further, after the drawing the lining pipe into the pipeline, the method may further include: and tying a plug at one end of the lining tube, tying a tying head at the other end of the lining tube, and simultaneously enabling a traction wire for drawing the baking lamp to penetrate out of the plug and the tying head. Specifically, when the plugs are bundled, different plugs are used for different pipe diameters, bundling must be firm and reliable, breaking-free is prevented, the bundled plugs are dragged into a pipeline from an inspection well, and a traction baking lamp can be reserved for a traction wire of the lining pipe while the plugs are bundled for construction; and a metal binding head is bound at the other end of the lining tube, and a traction wire of the traction baking lamp is pulled out before the metal binding head is bound, so that the traction wire penetrates through a hole arranged on the metal binding. After the inflation and pressure maintaining of the lining pipe are completed, the air can be closed, the head cover plate is disassembled (wherein the cover plate is used for protecting the sealing effect in the lining pipe), and the baking lamp is placed in the lining pipe.
In some optional embodiments, after the placing the baking lamp into the inner lining tube, the method may further include: and inflating and maintaining the pressure of the lining pipe for a preset time. Specifically, after the baking lamp is placed into the lining tube, the tying cover plate is closed, the air is inflated again, the pressure is maintained for about half an hour, the traction wire is pulled from the other end, and the baking lamp can be pulled to the other end. After curing, removing the plug, taking out the baking lamp, and cutting off redundant parts of the pipe end; and CCTV rechecking can be carried out.
In some embodiments, the determining the damage degree of the pipeline and reinforcing the damaged portion of the pipeline according to the video image data and the construction drawing may include: when the safety of the pipeline structure is judged according to the video image data and the construction drawing, but the defects in the pipeline affect the construction of a lining method, the pipeline structure is preprocessed, and the disjointed and cracked parts can be repaired by adopting a punctiform in-situ curing method, a rubber double-expansion ring method or a lining steel plate method, wherein the rubber double-expansion ring method and the lining steel plate are suitable for pipelines with large pipe diameters; repairing the leaked part by adopting a punctiform in-situ curing method or chemical grouting plugging (wherein the chemical grouting plugging is that a grouting pipe extends into the leaked part and then grouting is carried out); and (3) adopting waterproof mortar to repair the staggered position (namely, coating the waterproof mortar in the gap of the staggered position). The method is safe for the pipeline structure, and the defects in the pipeline do not influence the lining method construction, or the defects can be repaired after the lining method construction, and the defects can not be treated.
Further, according to the video image data and the construction drawing, the damage degree of the pipeline is judged and the damaged part of the pipeline is reinforced, and the method further comprises the following steps: if the detection finds that the base layer of the pipeline has hidden dangers such as cavities, instability and the like, the base layer soil body of the pipeline needs to be cured, and the cavity soil body is cured by spraying waterproof mortar.
And 4, step 4: and paving a quick lattice pad in the pipeline, and grouting to fill a gap between the quick lattice pad and the pipeline.
In step 4, the laying of the rapid lattice pad in the pipeline and grouting to fill the gap between the rapid lattice pad and the pipeline may include: the rapid lattice pad is pulled into the pipeline from one end of the pipeline by using a winch, wherein the rapid lattice pad can be customized according to the actual length of the pipeline in the construction preparation process, the rapid lattice pad is prefabricated and welded in advance, the length and the size of the welded rapid lattice pad need to be measured, the integrity of the rapid lattice pad is ensured, and the rapid lattice pad is pulled into the pipeline to be repaired by using the winch; after the quick lattice mat is laid, the quick lattice mat can be fixed with the inner wall of the pipeline, and a grouting pipe is installed at the same time (namely, the grouting pipe is installed between the quick lattice mat and the inner wall of the pipeline), wherein the quick lattice mat can be fixed on the inner wall of the pipeline through an anchoring plate and a bolt; and grouting liquid is injected into the grouting pipe, so that the grouting liquid flows to a gap between the quick lattice pad and the pipeline along the grouting pipe, and the quick lattice pad and the pipeline are fixed into a whole, wherein the grouting liquid is preferably selected from SG100 Gaohui grout, and the high lattice grout SG100 mainly comprises cement, a special additive and a plurality of mineral modification components and high polymer materials.
Further, in step 4, before injecting grout into the grout pipe to flow into a gap between the quick grid pad and the pipeline along the grout pipe and fixing the quick grid pad and the pipeline as a whole, the method may further include: installing sealing parts at the inlet and outlet at two ends of the pipeline, sealing the interior of the pipeline, and reserving a grouting hole and a grout outlet in advance; and water is injected into the cavity defined by the quick lattice cushions, and the quick lattice cushions are supported by utilizing the gravity and the pressure of the water, so that the whole pipeline is filled with the quick lattice cushions.
After step 4, after grouting is completed, grout may be shut down. And (4) after the slurry is solidified, removing the plug, supporting water in the emptying pipe, performing recheck by adopting a CCTV robot, and checking and accepting after the inspection is qualified.
The method is suitable for lining various pipelines with the pipe diameters of 250-2000 mm, is suitable for trenchless repair of pipelines with circular, egg-shaped or special geometric shapes in the cross section of the pipeline, and is also suitable for trenchless repair and transformation of concrete pipes, corrugated pipes, steel pipes, glass sand inclusion pipes and the like.
The principle of the pipeline repairing construction method provided by the embodiment of the invention is as follows:
the detection robot can enter from one end of the pipeline to automatically detect the condition inside the pipeline, further determine the damaged position of the pipeline, reinforce the corresponding damaged part of the pipeline, and further form a pipe-in-pipe structure by the quick lattice mat laid in the pipeline, so that the underground pipeline which is damaged or loses the conveying function is repaired in situ, therefore, the pipeline does not need to be excavated and repaired, the adverse effect on the society and the environment is small, and the influence on the traffic and the traveling of people is small. The construction technology is summarized and optimized in the practice of a plurality of pipeline repair projects, has mature technical schemes and construction technologies, and has strong operability. The main operation parts of the whole construction process comprise pipeline cleaning, reinforcement treatment, quick lattice cushion grouting construction and the like, the labor consumption and the mechanical shift are less, and the labor intensity is low. Meanwhile, the existing traffic facilities are not damaged, and the problem that traffic is influenced by repairing in a busy traffic area by an excavation method is solved, so that the cost of safety civilization measures is reduced, and the traffic safety of passing vehicles and pedestrians is improved; the main materials used in the construction process are environment-friendly and nontoxic, and can also be used for drinking water structures; compared with a repair scheme of excavating and replacing pipelines, a large amount of manpower and machinery are not required to be input in construction, the construction cost is slightly lower than that of the traditional excavation repair method, the overall social benefit and economic benefit are good, and the cost is lower by adopting a non-excavation liner method according to the calculation of the same pipeline construction area; the method of not digging the road surface is adopted, so that garbage is not generated, traffic is not blocked, and the image of pipeline repairing construction is greatly improved.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A pipeline repairing construction method is characterized by comprising the following steps:
carrying out water plugging and dredging on the pipeline;
the release detection robot detects the interior of the pipeline, and collects and stores video image data of the pipeline;
judging the damage degree of the pipeline and reinforcing the damaged part of the pipeline according to the video image data and the construction drawing;
and paving a quick lattice pad in the pipeline, and grouting to fill a gap between the quick lattice pad and the pipeline.
2. The pipeline rehabilitation method according to claim 1, wherein said water-plugging and dredging the pipeline comprises:
plugging all water inlets and water outlets of the pipeline in an air bag or cofferdam mode;
and flushing the sediment in the pipeline into a downstream inspection well by using high-pressure water, and sucking the sediment away by using a sewage suction pump.
3. The pipe rehabilitation method as claimed in claim 2, further comprising, after flushing the sediment in the pipe into a downstream inspection well with high-pressure water and sucking away the sediment with a sewage suction pump:
a steel cleaner is adopted to clean and pull the stones in the pipeline into the inspection well, and the stones are manually cleaned and transported out of the pipeline;
or the high-pressure water and the cutting spray head are adopted to cut off the sundries in the pipeline and then the pipeline is transported out;
or driving the cleaning robot to enter the pipeline for cleaning construction.
4. The pipeline rehabilitation construction method according to claim 1, wherein the reinforcing treatment of the damaged portion of the pipeline comprises:
drawing a liner tube into the conduit;
inflating and maintaining the pressure of the lining pipe;
placing a baking lamp in the lining tube;
and driving the baking lamp to move from one end of the lining pipe to the other end at a preset speed, so that the lining pipe and the pipeline are gradually solidified.
5. The pipe rehabilitation method according to claim 4, further comprising, after said drawing the lining pipe into the pipe:
and tying a plug at one end of the lining tube, tying a tying head at the other end of the lining tube, and simultaneously enabling a traction wire for drawing the baking lamp to penetrate out of the plug and the tying head.
6. The pipe rehabilitation method as claimed in claim 4, further comprising, after said placing of the baking lamp into the lining pipe:
and inflating and maintaining the pressure of the lining pipe for a preset time.
7. The method of claim 1, wherein the determining the damage degree of the pipeline and the reinforcing the damaged portion of the pipeline according to the video image data and the construction drawing comprises:
repairing the disjointed and cracked parts by adopting a dotted in-situ curing method, a rubber double-expansion ring method or a lining steel plate method;
repairing the leaked part by adopting a punctiform in-situ curing method or chemical grouting leaking stoppage;
and adopting waterproof mortar to repair the staggered parts.
8. The method of claim 1, wherein the determining the damage degree of the pipeline and the reinforcing treatment of the damaged portion of the pipeline according to the video image data and the construction drawing further comprises:
and if detecting that the base layer of the pipeline has a cavity, spraying cement mortar for preventing the base layer soil body of the pipeline from being solidified.
9. The pipe rehabilitation method as claimed in claim 1, wherein said laying a rapid lattice pad in the pipe and grouting the gap between the rapid lattice pad and the pipe comprises:
drawing the speed check pad from one end of the pipe into the pipe;
fixing the quick lattice pad and the inner wall of the pipeline, and installing a grouting pipe between the quick lattice pad and the inner wall of the pipeline;
and injecting grout into the grouting pipe, enabling the grout to flow into a gap between the quick grid pad and the pipeline along the grouting pipe, and fixing the quick grid pad and the pipeline into a whole.
10. The pipeline rehabilitation method as claimed in claim 9, wherein the step of injecting grout into the grout pipe to flow along the grout pipe into the gap between the quick-acting mat and the pipeline, and before the step of fixing the quick-acting mat and the pipeline as a whole, further comprises the steps of:
installing sealing elements at two ends of the pipeline;
and injecting water into a cavity defined by the quick lattice pads to enable the quick lattice pads to fill the pipeline.
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