CN111455933A - Piping water-stopping grouting device and using method thereof - Google Patents
Piping water-stopping grouting device and using method thereof Download PDFInfo
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- CN111455933A CN111455933A CN202010415947.4A CN202010415947A CN111455933A CN 111455933 A CN111455933 A CN 111455933A CN 202010415947 A CN202010415947 A CN 202010415947A CN 111455933 A CN111455933 A CN 111455933A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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Abstract
The invention provides a piping water-stopping grouting device which comprises an outer pipe, wherein an inner pipe is arranged in the outer pipe; the front end of the inner pipe extends out of the front end of the outer pipe, the air bag is in a cylindrical shape, a first butt joint sleeve and a second butt joint sleeve are arranged at two ends of the air bag respectively, the first butt joint sleeve is connected with the front end of the outer pipe, the second butt joint sleeve is connected with the front end of the inner pipe, so that an inflation section between the outer pipe and the inner pipe is communicated with the air bag, and a grouting channel penetrating through the center of the inner pipe is arranged; the rear end of the outer pipe is provided with an air distribution cylinder communicated with the inflation section, the rear end of the air distribution cylinder is provided with a sliding hole, the inner wall of the sliding hole is provided with a sealing ring, the rear end of the inner pipe penetrates through the sliding hole to be in sealing fit with the sealing ring to realize that the inner pipe can stretch and contract and ensure air tightness, and the air distribution cylinder is further provided with an air supply port communicated with the inner cavity of the air distribution cylinder. The invention has the advantages of accurate positioning, capability of extruding the inner wall of the leakage point channel to improve the position strength of the leakage pipe and reduce the water content so as to ensure the reliability of leakage stoppage.
Description
Technical Field
The invention relates to the field of municipal water conservancy emergency, in particular to a piping water stopping and grouting device and a using method thereof.
Background
Piping refers to the phenomenon that fine particles in a soil body are taken away from gaps of coarse particles by underground water under the action of seepage, so that the soil body forms a through seepage channel, and the soil body collapses. When piping occurs, if not handled in time, the voids will expand in a short time and will be overwhelmed, resulting in a collapse of the dam. When piping occurs, the water surface is turned over, the duration is prolonged along with the rise of the upstream water level, the dangerous case is continuously worsened, a large amount of water is gushed and sand is turned over, so that the soil framework of the dike and sluice foundation is damaged, the pore passage is enlarged, the foundation soil is cleared, the building is collapsed, and accidents such as dike breaking, dam collapse, gate reversal and the like are caused.
Under the condition of high water level in a flood season, water flows from a river bank to the downstream (namely seepage) along gaps of the soil of the hundred-embankment foundation, and is limited by the peripheral wall, the water flow is somewhat similar to that of a pipeline, and particularly seepage water flows through a strong permeable layer and flows into the embankment underground, and then the pressure is still high, if a sticky soil covering layer is broken, silt and known fine sand below the layer are brought out, and the phenomenon of water overflow and sand gushing is caused, namely sand turning and water blowing. The development of piping dangerous cases is most rapid due to the 'soil flow'. The method empties the sand layer under the base of the nearby dike (gate), which can cause the dike (gate) body to suddenly be subdued and make the dike disaster. Piping is therefore one of the most serious risks and must be handled immediately once it is found to be necessary.
Chinese patent CN200910066332.9 discloses a dam piping emergency rescue high polymer closed grouting method. When piping dangerous situations occur in the dam, injecting high polymer materials into the geotextile bag arranged at the piping passage, and rapidly expanding and curing the volume after the materials react so as to rapidly block the piping passage inlet; and then injecting a high polymer material into the piping channel through the micropores, wherein the volume of the material is rapidly expanded and solidified after the material reacts, so that the purposes of blocking the piping channel, reinforcing the dam body and improving the overall stability of the dam body are achieved.
However, in the method, a leakage point is easy to be determined when the leakage is blocked, the geotextile bag can only enter the piping passage at the position of the piping entrance by water flow, the geotextile bag is difficult to be deeply conveyed to the position of the piping passage section, and meanwhile, after the plugging of the piping entrance is completed by the geotextile bag, when the high polymer material is injected from the top of the dam body through the hollow steel pipe, the hollow steel pipe is difficult to effectively align with the piping passage, and particularly under the condition that the piping passage is bent in the dam body, the injection position of the high polymer material is easy to be wrong, the reliability of the aqueduct is influenced, and potential safety hazards are easy to exist.
Disclosure of Invention
Based on the problems, the invention aims to provide the piping water-stopping grouting device which is accurate in positioning, can extrude the inner wall of the leakage point channel to improve the position strength of the leakage pipe, and reduces the water content so as to ensure the reliability of leakage stoppage.
Aiming at the problems, the following technical scheme is provided: a piping water-stopping grouting device comprises an outer pipe, wherein an inner pipe capable of axially sliding and stretching relative to the outer pipe is arranged in the outer pipe, and an inflation section is reserved between the inner wall of the outer pipe and the outer wall of the inner pipe; the front end of the inner pipe extends out of the front end of the outer pipe, the air bag is in a cylindrical shape, a first butt joint sleeve and a second butt joint sleeve are arranged at two ends of the air bag respectively, the first butt joint sleeve is connected with the front end of the outer pipe, the second butt joint sleeve is connected with the front end of the inner pipe, so that an inflation section between the outer pipe and the inner pipe is communicated with the air bag, and a grouting channel penetrating through the center of the inner pipe is arranged; the rear end of the outer pipe is provided with an air distribution cylinder communicated with the inflation section, the rear end of the air distribution cylinder is provided with a sliding hole, the inner wall of the sliding hole is provided with a sealing ring, the rear end of the inner pipe penetrates through the sliding hole to be in sealing fit with the sealing ring to realize that the inner pipe can stretch and contract and ensure air tightness, and the air distribution cylinder is further provided with an air supply port communicated with the inner cavity of the air distribution cylinder.
In the structure, the length-diameter ratio of the air bag is controlled by the mutual extension of the outer pipe and the inner pipe, so that the air bag is conveniently guided to enter the middle section of the piping channel, the inner pipe and the outer pipe can be made of PVC materials, the inner pipe and the outer pipe have certain bending capacity, the inner pipe and the outer pipe are conveniently bent adaptively along the trend of the piping channel, the most direct hand feeling feedback of operators can be ensured, and the filling reliability is ensured; the air bag is connected with the outer pipe and the inner pipe through the first butt joint sleeve and the second butt joint sleeve, the air bag with proper size can be selected according to different piping diameters, the piping water flow can be accurately cut off when the air bag is expanded, meanwhile, sand and stones on the periphery of a piping channel can be extruded, and a good fixed positioning foundation is provided for injecting high polymer materials through the inner pipe; the outer pipe is pulled backwards and retracted into the expansion air bag in due time while the high polymer material is injected, so that the piping channel is ensured to be gradually filled from the piping outlet direction to the piping inlet direction, and finally the air bag is expanded more due to the reduction of pressure at the position close to the riverbed, so that the high polymer material forms a plug with a conical structure, and the compactness and the reliability of plugging and filling of the piping channel are ensured.
The invention is further provided that the inner pipe is provided with a plurality of air guide grooves which are arranged along the axial direction and are uniformly distributed along the circumferential direction when passing through the surface in the outer pipe during expansion and contraction.
In the structure, the air guide groove is used for improving the section between the inner pipe and the outer pipe, so that compressed air can be smoothly sent into the air bag from the air distribution cylinder.
The invention is further provided that the front end of the outer pipe is provided with a first external thread, the front end of the inner pipe is provided with a second external thread, the inner wall of the first butt joint sleeve is provided with a first internal thread screwed with the first external thread, and the inner wall of the second butt joint sleeve is provided with a second internal thread screwed with the second external thread.
In the structure, the first butt joint sleeve and the second butt joint sleeve are respectively connected with the outer pipe and the inner pipe through threads, so that the air bag is conveniently disassembled and assembled and the air bag is conveniently replaced.
The invention is further provided that one side of the first external thread facing the rear end of the outer pipe is provided with a first baffle ring; and a second retaining ring is arranged on one side of the second external thread, which faces the rear end of the inner pipe.
In the structure, the first baffle ring provides limiting for the first butt joint sleeve when the first butt joint sleeve and the outer pipe are screwed; the second baffle ring provides a limit for the second butt joint sleeve when the second butt joint sleeve and the inner pipe are screwed.
The invention is further provided that the outer edge of the second retaining ring is provided with constant pressure grooves which are equal in number and are correspondingly arranged with the air guide grooves along the circumferential direction of the second retaining ring; the outer diameter of the second retaining ring is larger than the inner diameter of the outer pipe and smaller than the diameter of the tooth bottom of the first external thread, so that the second retaining ring is abutted against the end face of the front end of the outer pipe when the inner pipe moves towards the rear end of the outer pipe.
In the structure, the constant-pressure groove can avoid the interruption of air supply between the air guide groove and the air bag caused by the fact that the second baffle ring abuts against the end face of the outer tube when the inner tube is drawn out towards the rear end of the outer tube.
The invention is further provided that the rear end of the air bag is sleeved on the outer wall of the first butt sleeve and is connected with the first butt sleeve by tightening the hoop on the outer wall of the air bag; the front end of the air bag is inwards turned towards the rear end of the air bag, then the surface of the air bag, which is positioned on the outer cylindrical surface of the air bag in situ, is sleeved on the second butt-joint sleeve, and the hooping connection with the second butt-joint sleeve is realized on the outer wall of the air bag through the hooping hoop.
In the structure, the diameter of the airbag during expansion can be improved by inwards turning the front end of the airbag towards the rear end of the airbag, an umbrella-shaped expansion body with an umbrella tip facing the rear end of the outer pipe can be formed at the same time, better blocking can be provided towards one side direction of the piping inlet in the piping channel, and the high polymer material can be prevented from overflowing towards the rear end of the outer pipe when being injected to affect the expansion of the airbag during retreating.
The anti-blocking device is further provided with a detachable anti-blocking conical head at one end of the second butt joint sleeve back to the rear end of the inner tube or at the front end of the inner tube, and the anti-blocking conical head can be pulled out towards the front end of the inner tube.
In the structure, the anti-blocking conical head is preferably arranged on the second butt-joint sleeve, the anti-blocking conical head prevents sand and stones from entering a grouting channel to cause blocking when the air bag is inserted along a piping channel, and the anti-blocking conical head can be directly pushed out from the second butt-joint sleeve to be separated when a high polymer material is injected.
A use method of a piping water-stopping grouting device comprises the following steps: estimating the inner diameter of a piping channel according to the piping flow, selecting an air bag with a proper expansion diameter, selecting an outer pipe and an inner pipe which are not less than the thickness of the dam in the horizontal direction, and installing the air bag on the outer pipe and the outer pipe; pushing the inner tube forward to make the air bag fixed at the front ends of the inner tube and the outer tube elongate along the axial direction of the air bag so as to reduce the outer diameter size; the outer pipe and the inner pipe with the air bag extend into water and are inserted into the piping channel and are pushed forward to the interior of the dam body along the direction of the piping water flow and exceed the thickness of the dam body by at least half; compressed air is injected into the air supply port, and simultaneously the inner pipe is pulled towards the rear end of the outer pipe to enable the air bag to expand in the piping channel to cut off water flow and compact surrounding sandy soil tissues; injecting a high polymer material through the rear end of the inner tube, so that the high polymer material flows out of a piping channel at the front position of the filling air bag from the front end of the inner tube; and then the outer pipe is drawn out under the condition of maintaining the pressure of the air bag and high polymer materials are continuously injected into the inner pipe until the complete root canal surge channel is filled.
Furthermore, when the outer tube is drawn out under the condition of maintaining the pressure of the air bag, the inner tube is pushed forward to elongate the length of the air bag so that the outer diameter of the air bag is reduced, or the outer tube is drawn out for a distance towards the rear end of the outer tube after the air bag is decompressed and then inflated again to expand the outer diameter of the air bag, so that the situation that the outer tube cannot be drawn out in times due to overlarge outer diameter of the air bag is avoided.
Furthermore, the high polymer material is always injected when the outer pipe is withdrawn.
The invention has the beneficial effects that: the length-diameter ratio of the air bag is controlled by the mutual extension of the outer pipe and the inner pipe, so that the air bag is conveniently guided to enter the middle section of the piping channel, the inner pipe and the outer pipe can be made of PVC materials, the inner pipe and the outer pipe have certain bending capacity, the piping channel can be conveniently bent adaptively along with the trend of the piping channel, the most direct hand feeling feedback of operators can be ensured, and the reliability of filling is ensured; the air bag is connected with the outer pipe and the inner pipe through the first butt joint sleeve and the second butt joint sleeve, the air bag with proper size can be selected according to different piping diameters, the piping water flow can be accurately cut off when the air bag is expanded, meanwhile, sand and stones on the periphery of a piping channel can be extruded, and a good fixed positioning foundation is provided for injecting high polymer materials through the inner pipe; the outer pipe is pulled backwards and retracted into the expansion air bag in due time while the high polymer material is injected, so that the piping channel is ensured to be gradually filled from the piping outlet direction to the piping inlet direction, and finally the air bag is expanded more due to the reduction of pressure at the position close to the riverbed, so that the high polymer material forms a plug with a conical structure, and the compactness and the reliability of plugging and filling of the piping channel are ensured.
Drawings
Fig. 1 is a schematic view showing the overall structure of the balloon of the present invention in a contracted state.
Fig. 2 is a schematic view of the balloon in full section in the deflated state of the balloon of the present invention.
Fig. 3 is a schematic view showing the overall structure of the inflated state of the airbag of the present invention.
Fig. 4 is a schematic view of the balloon in full section in the inflated state of the balloon of the present invention.
Fig. 5 is a schematic view of the full-section structure of the outer tube of the present invention.
FIG. 6 is a schematic view of the full-section structure of the outer tube and the inner tube of the present invention.
Fig. 7 is a full-section explosion structure schematic diagram of the outer pipe and the inner pipe of the invention.
Fig. 8 is a schematic diagram of the full-section explosion structure of the outer pipe of the invention.
FIG. 9 is a cross-sectional view of the outer tube and the inner tube according to the present invention.
FIG. 10 is an enlarged view of the portion A of FIG. 2 according to the present invention.
FIG. 11 is an enlarged view of the portion B of FIG. 2 according to the present invention.
FIG. 12 is an enlarged view of the portion C of FIG. 4 according to the present invention.
FIG. 13 is an enlarged view of the portion D of FIG. 5 according to the present invention.
FIG. 14 is an enlarged view of section E of FIG. 6 according to the present invention.
FIG. 15 is an enlarged view of the portion F of FIG. 7 according to the present invention.
FIG. 16 is an enlarged view of the portion G of FIG. 8 according to the present invention.
FIG. 17 is an enlarged view of the section H of FIG. 9 according to the present invention.
FIG. 18 is a schematic view of the dam body in the state of the present invention.
Fig. 19 is a schematic view showing a state in which a high polymer material is injected after the balloon of the present invention is inflated.
The reference numbers in the figures mean: 10-an outer tube; 11-gas distribution cylinder; 111-air supply port; 12-a slide hole; 13-sealing ring; 14-a first external thread; 141-a first baffle ring; 20-inner tube; 21-grouting a channel; 22-a gas guide groove; 23-a second external thread; 231-a second retainer ring; 232-constant pressure groove; 30-air bag; 31-a first docking sleeve; 311-first internal thread; 32-a second docking sleeve; 321-a second internal thread; 33-a tightening ring; 40-anti-blocking conical head; 50-inflated cross section; a-a piping channel; b-high polymer material.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 19, a piping water-stopping grouting device shown in fig. 1 to 19 includes an outer pipe 10, an inner pipe 20 capable of sliding and extending axially relative to the outer pipe 10 is disposed in the outer pipe 10, and an inflation section 50 is left between an inner wall of the outer pipe 10 and an outer wall of the inner pipe 20; the front end of the inner tube 20 extends out of the front end of the outer tube 10, the air bag 30 is detachable, the air bag 30 is cylindrical, a first butt sleeve 31 and a second butt sleeve 32 are respectively arranged at two ends of the air bag 30, the first butt sleeve 31 is connected with the front end of the outer tube 10, the second butt sleeve 32 is connected with the front end of the inner tube 20 to enable an inflation section 50 between the outer tube 10 and the inner tube 20 to be communicated with the air bag 30, and a grouting channel 21 is arranged in the center of the inner tube 20 in a penetrating mode; the rear end of the outer tube 10 is provided with a gas distribution cylinder 11 communicated with the gas charging section 50, the rear end of the gas distribution cylinder 11 is provided with a sliding hole 12, the inner wall of the sliding hole 12 is provided with a sealing ring 13, the rear end of the inner tube 20 penetrates through the sliding hole 12 to be in sealing fit with the sealing ring 13, so that the inner tube 20 can stretch and contract and the gas tightness is guaranteed, and the gas distribution cylinder 11 is further provided with a gas supply port 111 communicated with the inner cavity of the gas distribution cylinder.
In the structure, the length-diameter ratio of the air bag 30 is controlled by mutually stretching the outer tube 10 and the inner tube 20, so that the air bag 30 is conveniently guided to enter the middle section of the piping channel a, the inner tube 10 and the outer tube 20 can be made of PVC materials, so that the PVC materials have certain bending capacity, the PVC materials are conveniently bent adaptively along the trend of the piping channel a, the most direct hand feeling feedback of operators can be ensured, and the filling reliability is ensured; the air bag 30 is connected with the outer pipe 10 and the inner pipe 20 through the first butt joint sleeve 31 and the second butt joint sleeve 32, the air bag 30 with proper size can be selected according to different piping diameters, the air bag 30 can accurately cut off piping water flow when being expanded, meanwhile, sand and stones around a piping channel a can be extruded, and a good fixed positioning foundation is provided for injecting a high polymer material b through the inner pipe 20; the outer pipe 10 is pulled backwards and timely contracted to the expanded air bag 30 while the high polymer material b is injected, so that the piping channel a is ensured to be gradually filled from the piping outlet direction to the piping inlet direction, and finally, the air bag 30 is expanded because the pressure is reduced at the position close to the river bed, so that the high polymer material b forms a plug with a conical structure, and the compactness and the reliability of plugging and filling of the piping channel a are ensured.
In this embodiment, the inner tube 20 passes through the inner surface of the outer tube 10 during expansion and contraction, and a plurality of air guide grooves 22 are formed along the axial direction and are uniformly distributed along the circumferential direction.
In the above configuration, the air guide groove 22 is used to increase the cross section between the inner tube 20 and the outer tube 10, so that the compressed air can be smoothly fed from the air distribution cylinder 11 into the airbag 30.
In this embodiment, the front end of the outer tube 10 is provided with a first external thread 14, the front end of the inner tube 20 is provided with a second external thread 23, the inner wall of the first butt joint sleeve 31 is provided with a first internal thread 311 screwed with the first external thread 14, and the inner wall of the second butt joint sleeve 32 is provided with a second internal thread 321 screwed with the second external thread 23.
In the above structure, the first docking sleeve 31 and the second docking sleeve 32 are respectively connected to the outer tube 10 and the inner tube 20 by threads, so that the air bag 30 can be conveniently disassembled and replaced.
In this embodiment, a first stop ring 141 is disposed on one side of the first external thread 14 facing the rear end of the outer tube 10; a second retaining ring 231 is arranged on one side of the second external thread 23 facing the rear end of the inner pipe 20.
In the above structure, the first stopper ring 141 provides a limit for the first docking sleeve 31 when the first docking sleeve 31 is screwed with the outer tube 10; the second stop ring 231 provides a stop for the second docking sleeve 32 when the second docking sleeve 32 is screwed with the inner tube 20.
In this embodiment, the outer edge of the second retaining ring 231 is provided with constant pressure grooves 232 which are equal in number and corresponding to the air guide grooves 22 along the circumferential direction; the outer diameter of the second retaining ring 231 is larger than the inner diameter of the outer tube 10 and smaller than the root diameter of the first external thread 14, so that the second retaining ring 231 abuts against the front end face of the outer tube 10 when the inner tube 20 moves towards the rear end of the outer tube 10.
In the above structure, the constant pressure groove 232 prevents the second stopper 231 from abutting against the end surface of the outer tube 10 when the inner tube 20 is drawn out toward the rear end of the outer tube 10, thereby preventing the interruption of the air supply between the air guide groove 22 and the airbag 30.
In this embodiment, the rear end of the airbag 30 is sleeved on the outer wall of the first docking sleeve 31, and is hooped on the outer wall of the airbag 30 through a hooping ring 33 to realize a hooping connection with the first docking sleeve 31; the front end of the airbag 30 is turned inwards towards the rear end of the airbag 30, so that one surface of the airbag 30, which is positioned on the outer cylindrical surface, is sleeved on the second butt-joint sleeve 32, and the airbag 30 is hooped on the outer wall through the hooping ring 33 to realize the hooping connection with the second butt-joint sleeve 32.
In the structure, the front end of the air bag 30 is inwards turned towards the rear end of the air bag 30 to improve the diameter of the air bag 30 during expansion, and meanwhile, the umbrella-shaped expansion body with the umbrella tip facing towards the rear end of the outer pipe 10 can be formed, better blocking can be provided towards the direction of one side of the piping inlet in the piping channel a, and the high polymer material b can be prevented from overflowing towards the rear end of the outer pipe 10 to influence the expansion of the air bag 30 during backward movement when being injected.
In this embodiment, a detachable anti-blocking cone head 40 is disposed at one end of the second docking sleeve 32 opposite to the rear end of the inner tube 20 or at the front end of the inner tube 20, and the anti-blocking cone head can be disengaged from the front end of the inner tube.
In the above structure, the anti-blocking cone head 40 is preferably disposed on the second docking sleeve 32, so that when the air bag 20 is inserted along the piping channel a, the anti-blocking cone head 40 prevents sand and stones from entering the grouting channel 21 to cause blocking, and when the high polymer material b is injected, the anti-blocking cone head 40 can be directly pushed out from the second docking sleeve 32 to be separated.
A use method of a piping water-stopping grouting device comprises the following steps: estimating the inner diameter of a piping channel a according to the piping flow, selecting an air bag 30 with a proper expansion diameter, selecting an outer tube 10 and an inner tube 20 which are not less than the thickness of the dam in the horizontal direction, and installing the air bag 30 on the outer tube 10 and the outer tube 20; pushing the inner tube 20 forward to elongate the balloon 30 fixed to the front ends of the inner tube 20 and the outer tube 10 in the axial direction of the balloon 30 to reduce the outer diameter; the outer pipe 10 and the inner pipe 20 with the air bag 30 extend into water and are inserted into the piping channel a and are pushed forward to the interior of the dam body along the direction of the piping water flow and exceed the thickness of the dam body by at least half; the compressed air is injected into the air supply port 111, and simultaneously the inner tube 20 is pulled towards the rear end of the outer tube 10, so that the air bag 30 is expanded in the piping channel a to cut off the water flow and compact the surrounding sandy soil tissue; injecting a high polymer material b through the rear end of the inner tube 20, so that the high polymer material b flows out of the piping channel a at the front position of the filling air bag 30 from the front end of the inner tube 20; the outer tube 10 is then withdrawn under pressure from the balloon 30 and the high polymer material b is continuously injected through the inner tube 20 until the entire piping channel a is filled.
Further, when the outer tube 10 is drawn out under the condition of maintaining the pressure of the balloon 30, the inner tube 20 is pushed forward to elongate the length of the balloon 30 so as to reduce the outer diameter of the balloon 30, or after the balloon 30 is decompressed, the outer tube 10 is drawn out for a distance towards the rear end of the outer tube 10 and then inflated again to expand the outer diameter of the balloon 30, so that the outer tube 10 cannot be drawn out in times due to the fact that the outer diameter of the balloon 30 is too large.
Further, the high polymer material b is always injected when the outer tube 10 is withdrawn.
The invention has the beneficial effects that: the length-diameter ratio of the air bag 30 is controlled by mutually stretching the outer tube 10 and the inner tube 20, so that the air bag 30 can be conveniently guided to enter the middle section of the piping channel a, the inner tube 10 and the outer tube 20 can be made of PVC materials, the PVC materials have certain bending capacity, the PVC materials can be conveniently bent adaptively along the trend of the piping channel a, the most direct hand feeling feedback of operators can be ensured, and the filling reliability can be ensured; the air bag 30 is connected with the outer pipe 10 and the inner pipe 20 through the first butt joint sleeve 31 and the second butt joint sleeve 32, the air bag 30 with proper size can be selected according to different piping diameters, the air bag 30 can accurately cut off piping water flow when being expanded, meanwhile, sand and stones around a piping channel a can be extruded, and a good fixed positioning foundation is provided for injecting a high polymer material b through the inner pipe 20; the outer pipe 10 is pulled backwards and timely contracted to the expanded air bag 30 while the high polymer material b is injected, so that the piping channel a is ensured to be gradually filled from the piping outlet direction to the piping inlet direction, and finally, the air bag 30 is expanded because the pressure is reduced at the position close to the river bed, so that the high polymer material b forms a plug with a conical structure, and the compactness and the reliability of plugging and filling of the piping channel a are ensured.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.
Claims (10)
1. The utility model provides a piping stagnant water slip casting device which characterized in that: the inflatable air bag comprises an outer pipe, wherein an inner pipe which can axially slide and stretch relative to the outer pipe is arranged in the outer pipe, and an inflatable section is reserved between the inner wall of the outer pipe and the outer wall of the inner pipe; the front end of the inner pipe extends out of the front end of the outer pipe, the air bag is in a cylindrical shape, a first butt joint sleeve and a second butt joint sleeve are arranged at two ends of the air bag respectively, the first butt joint sleeve is connected with the front end of the outer pipe, the second butt joint sleeve is connected with the front end of the inner pipe, so that an inflation section between the outer pipe and the inner pipe is communicated with the air bag, and a grouting channel penetrating through the center of the inner pipe is arranged; the rear end of the outer pipe is provided with an air distribution cylinder communicated with the inflation section, the rear end of the air distribution cylinder is provided with a sliding hole, the inner wall of the sliding hole is provided with a sealing ring, the rear end of the inner pipe penetrates through the sliding hole to be in sealing fit with the sealing ring to realize that the inner pipe can stretch and contract and ensure air tightness, and the air distribution cylinder is further provided with an air supply port communicated with the inner cavity of the air distribution cylinder.
2. The piping water-stop grouting device according to claim 1, characterized in that: the inner pipe is provided with a plurality of air guide grooves which are arranged along the axial direction and are uniformly distributed along the circumferential direction when passing through the inner surface of the outer pipe during expansion.
3. The piping water slurry injecting device according to claim 1 or 2, wherein: the outer tube front end is equipped with first external screw thread, the inner tube front end is equipped with the second external screw thread, first butt joint cover inner wall is equipped with the first internal thread that closes soon with first external screw thread, the second butt joint cover inner wall is equipped with the second internal thread that closes soon with the second external screw thread.
4. The piping water-stop grouting device according to claim 3, characterized in that: a first baffle ring is arranged on one side of the first external thread, which faces the rear end of the outer pipe; and a second retaining ring is arranged on one side of the second external thread, which faces the rear end of the inner pipe.
5. The piping water-stop grouting device according to claim 4, characterized in that: the outer edge of the second retaining ring is provided with constant-pressure grooves which are equal in number and are correspondingly arranged with the air guide grooves along the circumferential direction of the second retaining ring; the outer diameter of the second retaining ring is larger than the inner diameter of the outer pipe and smaller than the diameter of the tooth bottom of the first external thread, so that the second retaining ring is abutted against the end face of the front end of the outer pipe when the inner pipe moves towards the rear end of the outer pipe.
6. The piping water-stop grouting device according to claim 1, characterized in that: the rear end of the air bag is sleeved on the outer wall of the first butt sleeve and is connected with the first butt sleeve in a hooping mode through hooping hoops on the outer wall of the air bag; the front end of the air bag is inwards turned towards the rear end of the air bag, then the surface of the air bag, which is positioned on the outer cylindrical surface of the air bag in situ, is sleeved on the second butt-joint sleeve, and the hooping connection with the second butt-joint sleeve is realized on the outer wall of the air bag through the hooping hoop.
7. The piping water-stop grouting device according to claim 1, characterized in that: one end or the inner tube front end of second butt joint cover dorsad inner tube rear end are equipped with the stifled conical head of preventing of removable setting, prevent stifled conical head and can deviate from toward the inner tube front end direction.
8. The method of using the piping water grouting device according to claims 1-7, comprising the steps of: estimating the inner diameter of a piping channel according to the piping flow, selecting an air bag with a proper expansion diameter, selecting an outer pipe and an inner pipe which are not less than the thickness of the dam in the horizontal direction, and installing the air bag on the outer pipe and the outer pipe; pushing the inner tube forward to make the air bag fixed at the front ends of the inner tube and the outer tube elongate along the axial direction of the air bag so as to reduce the outer diameter size; the outer pipe and the inner pipe with the air bag extend into water and are inserted into the piping channel and are pushed forward to the interior of the dam body along the direction of the piping water flow and exceed the thickness of the dam body by at least half; compressed air is injected into the air supply port, and simultaneously the inner pipe is pulled towards the rear end of the outer pipe to enable the air bag to expand in the piping channel to cut off water flow and compact surrounding sandy soil tissues; injecting a high polymer material through the rear end of the inner tube, so that the high polymer material flows out of a piping channel at the front position of the filling air bag from the front end of the inner tube; and then the outer pipe is drawn out under the condition of maintaining the pressure of the air bag and high polymer materials are continuously injected into the inner pipe until the complete root canal surge channel is filled.
9. The use method of the piping water grouting device according to claim 8, comprising the following steps: when the outer tube is pulled out under the condition of maintaining the pressure of the air bag, the inner tube is pushed forward to elongate the length of the air bag, so that the outer diameter of the air bag is reduced, or the outer tube is pulled out for a distance towards the rear end of the outer tube after the air bag is decompressed, and then the outer diameter of the air bag is inflated again to expand the outer diameter of the air bag, so that the outer tube cannot be pulled out in times due to the overlarge.
10. The use method of the piping water grouting device according to claim 8 or 9, comprising the steps of: the high polymer material is always in the injection state when the outer pipe is withdrawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415947.4A CN111455933A (en) | 2020-05-16 | 2020-05-16 | Piping water-stopping grouting device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415947.4A CN111455933A (en) | 2020-05-16 | 2020-05-16 | Piping water-stopping grouting device and using method thereof |
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| CN111455933A true CN111455933A (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262657A (en) * | 2022-08-11 | 2022-11-01 | 中交一公局集团有限公司 | Method for plugging water burst channel after foundation pit recharging |
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2020
- 2020-05-16 CN CN202010415947.4A patent/CN111455933A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262657A (en) * | 2022-08-11 | 2022-11-01 | 中交一公局集团有限公司 | Method for plugging water burst channel after foundation pit recharging |
| CN115262657B (en) * | 2022-08-11 | 2024-03-15 | 中交一公局集团有限公司 | Plugging method for water burst channel after foundation pit recharging |
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