CN209891223U - Anchor rod construction water leakage prevention sealing device located below underground water level - Google Patents
Anchor rod construction water leakage prevention sealing device located below underground water level Download PDFInfo
- Publication number
- CN209891223U CN209891223U CN201920555643.0U CN201920555643U CN209891223U CN 209891223 U CN209891223 U CN 209891223U CN 201920555643 U CN201920555643 U CN 201920555643U CN 209891223 U CN209891223 U CN 209891223U
- Authority
- CN
- China
- Prior art keywords
- ball valve
- stock
- anchor
- anchor rod
- sealing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a be located following stock construction leak protection water sealing device of groundwater water level, including the orifice pipe, ball valve and the second seal cover pipe that connect gradually, the orifice pipe is installed on the wall body, can supply stock or anchor rope to pass under the ball valve open mode, and the second seal cover is intraductal to be full of the colloid that has acrylate to condense into, and stock or anchor rope insert to the hole bottom in-process from the second seal cover pipe, and the colloid wraps up stock or anchor rope. The device can utilize characteristics such as the water absorption expansion that acrylate solidifies into the colloid at inserting stock or anchor rope in-process, wraps up stock and anchor rope to form the closure to the orifice, prevent that downthehole thick liquid from flowing from the orifice.
Description
Technical Field
The utility model belongs to the technical field of the technique of stock construction and specifically relates to a be located below groundwater water level stock construction leak protection water sealing device is related to.
Background
In the supporting structure of the existing foundation pit engineering, an underground continuous wall and an anchor rod support or a pile anchor support is often adopted. Before anchor rod construction, underground continuous walls or pile body structures (equivalent to walls) around a foundation pit are finished, and anchor rods mainly play a role in pulling and connecting the walls. The basic process of anchor rod construction is as follows: drilling a hole for a drill rod of the anchor rod drilling machine to extend into on the concrete wall by using a water drill; then drilling a hole in a soil layer at the back of the wall by using an anchor rod drilling machine; after drilling to the designed depth, grouting in the hole, and withdrawing the drill rod while grouting; after the cement slurry is fully pressed in the drilled hole, inserting an anchor rod or an anchor cable into the hole bottom from the hole opening; and tensioning the anchor rod or the anchor cable after the cement slurry in the drilled hole meets the requirement of the tensioning strength.
In the prior art, when an anchor rod is constructed below the groundwater level, an orifice pipe is generally installed in a wall hole, and a ball valve is installed on the outer end face of the orifice pipe. When downthehole mud jacking finishes, waiting for the intermediate time quantum that stock or anchor rope inserted, can close the ball valve, mainly be in order to prevent under groundwater pressure, downthehole grout and groundwater from the drill way outflow, influence the anchor quality.
However, during the insertion of the bolt or cable into the hole bottom, cement slurry and groundwater in the hole may still flow out of the hole opening due to the groundwater because the ball valve is in the open state. When the groundwater pressure is great, grout and groundwater flow out in a large number, seriously influence final anchor quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be located below groundwater water level stock construction leak protection water sealing device, the device can seal the drill way at stock or anchor rope insertion hole bottom in-process, reduces grout and groundwater and flows from the drill way.
The above object of the present invention can be achieved by the following technical solutions: the utility model provides a be located following stock construction leak protection water-tight sealing device of groundwater water level, is including the orifice pipe, ball valve and the second seal sleeve pipe that connect gradually, and the orifice pipe is installed on the wall body, can supply stock or anchor rope to pass under the ball valve open mode, and the intraductal colloid that is full of the acrylate coagulation becomes of second seal sleeve, and stock or anchor rope insert to the hole bottom in-process from the second seal sleeve pipe, and the colloid is with stock or anchor rope parcel, prevents that downthehole liquid from flowing from the drill way.
Through adopting above-mentioned technical scheme, insert stock or anchor rope in-process, utilize characteristics such as the water absorption expansion that acrylate solidifies into the colloid to wrap up stock and anchor rope to form to seal the orifice, prevent that downthehole thick liquid from flowing from the orifice.
The utility model discloses further set up to: the second seal sleeve is provided with a detachable end cover, and a slurry inlet hole for injecting acrylate and an exhaust hole for exhausting gas in the second seal sleeve are formed in the end cover.
Through adopting above-mentioned technical scheme, can install the second seal sleeve pipe on the ball valve earlier, then on-the-spot injection acrylate, make things convenient for the operation.
The utility model discloses further set up to: and flange plates are arranged at two ends of the second sealing sleeve, and the second sealing sleeve is connected with the ball valve flange and is connected with the end cover bolt.
Through adopting above-mentioned technical scheme, the easy dismounting of second sleeve pipe and ball valve and end cover is high-efficient, and seam crossing leakproofness is good moreover each other.
The utility model discloses further set up to: the inner wall of the second sealing sleeve is arranged in a diameter-variable mode, and the inner diameter of the position close to the ball valve is small.
The utility model discloses further set up to: the end of the inner wall of the second sealing sleeve close to the ball valve is fixedly connected with a reducing annular sheet for preventing the colloid from entering the ball valve; the inner diameter of the reducing ring-shaped piece is larger than the outer diameter of the anchor rod or the anchor cable.
By adopting the technical scheme, the acrylate glue is prevented from being brought into the drilled hole in the process of inserting the anchor rod or the anchor cable into the hole bottom.
The utility model discloses further set up to: the circumferential surface of the exposed part of the orifice pipe is provided with a water pressure balance port, and the water pressure balance port is provided with a slag discharge pipe and a slag discharge valve.
By adopting the technical scheme, the slag discharging valve can be opened at any time in the process of inserting the anchor rod, so that cement paste and underground water in the hole are discharged from the water pressure balance port, the internal and external pressures of the hole are balanced, and the insertion efficiency of the anchor rod or the anchor cable is improved.
To sum up, the utility model discloses a beneficial technological effect does:
1. in the process of inserting the anchor rod or the anchor cable, the anchor rod and the anchor cable are wrapped by utilizing the characteristics of water absorption expansion and the like of the colloid formed by solidifying the acrylate, so that the hole opening is sealed, and slurry in the hole is prevented from flowing out of the hole opening;
2. the arrangement of the end cover facilitates the assembly of the device and the injection work of acrylate;
3. the inner wall of the second sealing sleeve is provided with the reducing ring pieces and the diameter reducing ring pieces, so that the acrylate glue is prevented from being brought into a drilled hole in the process that the anchor rod or the anchor cable is inserted into the bottom of the hole.
Drawings
FIG. 1 is a schematic structural view of a mounting orifice tube;
FIG. 2 is a schematic view of the structure for mounting the ball valve and the sealing sleeve;
FIG. 3 is a schematic structural diagram of a water drill for drilling through a reserved wall;
FIG. 4 is a schematic view of a drill rod drilling process;
FIG. 5 is a schematic view of the structure after completion of grouting in the hole and withdrawal of the drill pipe;
FIG. 6 is a schematic view of the structure after installation of the second sealing sleeve;
FIG. 7 is a schematic view of the second sealing sleeve with end cap installed;
FIG. 8 is a schematic view of the bolt being inserted from the glue into the borehole;
FIG. 9 is a schematic view of the configuration of the anchor cable inserted into the borehole from the gel;
fig. 10 is a schematic view of the final anchoring of the anchor rod and anchor cable.
In the figure, 1, a wall body; 2. a soil body; 3. an orifice tube; 31. a slag discharge valve; 4. a ball valve; 5. sealing the sleeve; 6. a casing drilling machine; 61. a drill stem; 7. a second sealing sleeve; 71. an end cap; 72. a slurry inlet hole; 73. an exhaust hole; 8. an anchor cable; 81. a guide cap; 82. a support frame; 83. steel strand wires; 84. a secondary grouting pipe; 9. a colloid; 10. an anchor rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model discloses a be located following stock construction leak protection water sealing device of groundwater water level, following whole stock construction process that combines introduces the device, construction process includes following step:
step 1: as shown in figure 1, drilling a hole on a wall body 1 by using a water drill, and stopping drilling when the distance between the wall body 1 and a soil body 2 is 5-10 cm; if the orifice pipe 3 is reserved on the wall body 1, no hole needs to be formed;
step 2: installing an orifice pipe 3 in a drilled hole of a wall body 1, and injecting cement paste or water glass double-slurry between the orifice pipe 3 and the drilled hole to ensure that the orifice pipe 3 and the wall of the drilled hole are compact and have no gap; the circumferential surface of the exposed part of the orifice pipe 3 is provided with a water pressure balance port, and a slag discharge pipe and a slag discharge valve 31 are arranged on the water pressure balance port; the outer end face of the orifice pipe 3 is welded with a flange plate.
And step 3: as shown in fig. 2, a ball valve 4 is mounted on the outer end surface of the orifice pipe 3, and a sealing sleeve 5 is mounted on the outer end surface of the ball valve 4; the ball valve 4, the orifice pipe 3 and the sealing sleeve 5 can be connected by flanges, and are provided with sealing gaskets to form a closed channel. Packing is arranged on the inner peripheral surface of the sealing sleeve 5;
and 4, step 4: as shown in fig. 3, the ball valve 4 is opened, the drill cylinder of the water drill penetrates through the sealing sleeve 5, the inner hole of the ball valve 4 and the orifice pipe 3, and the packing wraps and seals the outer wall of the drill cylinder of the water drill; opening the slag discharge valve 31, then opening the residual wall 1 with the thickness of 5-10cm, and discharging the drilling slag from the slag discharge pipe in the drilling process; after the wall body 1 is drilled through, pulling out the water drill cylinder, and closing the ball valve 4 and the slag discharge valve 31;
and 5: as shown in fig. 4, the casing drilling machine 6 for drilling the hole by the anchor rod is in place, the drill bit and the drill rod 61 extend into the sealing casing 5, and the packing wraps the drill rod 61 for sealing; opening the ball valve 4 and the slag discharge valve 31, and starting drilling to form a hole; in the drilling process, the deslagging valve 31 plays a role in balancing the internal pressure of the drill hole and deslagging, and the valve opening and closing size is adjusted at any time according to the water pressure in the drill hole.
The diameters of the inner hole of the ball valve 4, the orifice pipe 3 and the sealing sleeve 5 are all larger than the maximum diameter of the drill rod 61 and the drill bit, so that the drill rod 61 and the drill bit can smoothly pass through. The sealing sleeve 5 can be a flexible waterproof sleeve, and the packing material in the flexible waterproof sleeve is a packing; the both ends of packing respectively with fixed plate and fly leaf butt, can change the interval of fixed plate and fly leaf through adjusting the bolt on the flexible waterproof sleeve pipe to make the packing tighten up or expand. When the packing is unfolded, the thickness is reduced, the inner space is increased, the drill bit and the drill rod 61 can pass through the packing smoothly, when the packing is tightened, the thickness is increased, the inner space is reduced, the packing can be tightly pressed on the drill rod 61, and underground water in the drill hole is prevented from flowing out.
Step 6: as shown in fig. 5, after the hole is formed, grouting into the drill rod 61 and gradually pulling out the drill rod 61, grouting to the position of the orifice pipe 3, and pulling out the drill rod 61 from the ball valve 4 when cement slurry is discharged from the slag discharge valve 31; closing the ball valve 4 and the slag discharge valve 31;
and 7: as shown in fig. 6, the sealing sleeve 5 is removed, a second sealing sleeve 7 is installed on the outer end face of the ball valve 4, and the second sealing sleeve 7 is filled with colloid 9 formed by condensing acrylate; and flange plates are arranged at two ends of the second sealing sleeve 7, and the second sealing sleeve 7 is connected with the ball valve 4 in a flange manner. The assembled second sealing sleeve 7, ball valve 4 and orifice tube 3 form a watertight seal.
The acrylate is generally prepared by mixing double slurries, has the characteristic of rapid solidification (the acrylate can be solidified within a few minutes), and forms a colloid 9 with good elasticity, toughness and water-absorbing expansibility after solidification.
The acrylate in the second sealing sleeve 7 can be injected in advance, and the second sealing sleeve 7 with the colloid 9-shaped acrylate is only required to be installed on the outer end face of the ball valve 4 during construction. The acrylate can also be injected on site, as shown in fig. 7, in order to facilitate the injection on site, the second sealing sleeve 7 is further provided with a detachable end cover 71, a slurry inlet hole 72 and an exhaust hole 73 are formed on the end cover 71 near the upper end, and bolt holes are uniformly formed near the periphery. During construction, the end cover 71 and the flange of the second sealing sleeve 7 are fixedly connected through bolts, and then acrylate is injected from the slurry inlet hole 72 on the end cover 71; after the acrylate has solidified, the end cap 71 is removed.
And 8: as shown in fig. 8 and 9, after the acrylate is condensed into the colloid 9, the anchor rod or anchor cable 8 is inserted into the colloid 9 of the second sealing sleeve 7, the ball valve 4 and the slag discharge valve 31 are opened, and the anchor rod or anchor cable 8 is continuously inserted into the bottom of the hole; during the process of inserting into the bottom of the hole, the colloid 9 wraps the anchor rod 10 or the anchor cable 8 to prevent grout in the hole from flowing out of the hole opening.
The end of the anchor rod 10 and the guide cap 81 (see fig. 9) of the end of the anchor cable 8 can be punctured with the glue 9 and inserted into the borehole, and then the glue 9 wraps the anchor rod 10 or the anchor cable 8. Although the anchor cable 8 includes the support frame 82 which is arranged in segments as shown in fig. 9, the support frame 82 supports the plurality of steel strand wires 83 in a structure with a gap in the middle, during the insertion of the anchor cable 8, after the support frame 82 passes through the second sealing sleeve 7, the colloid 9 expands with water under the water-bearing working environment, so that the gap between the plurality of steel strand wires 83 is filled, and thus the outflow of high-pressure water or injected cement slurry from the gap in the drill hole is reduced.
Preferably, after the anchor cable 8 is inserted into the bottom of the hole, acrylate is injected into the second sealing sleeve 7 again to completely fill the gaps between the steel strands, so that the hole opening is completely closed again, and water is prevented from flowing out of the hole opening in the solidification stage of cement slurry in the drill hole.
In order to prevent the acrylate gel 9 from being brought into the borehole during the insertion of the anchor rod 10 or anchor cable 8 into the borehole bottom, the inner wall of the second sealing sleeve 7 is tapered and has a small inner diameter near the ball valve 4. For example, a reducing annular sheet may be fixedly connected to the end of the second sealing sleeve 7 close to the ball valve 4, and the inner diameter of the annular sheet is smaller than the inner diameter of the second sealing sleeve 7 and larger than the outer diameter of the anchor rod or the anchor cable.
Further, a secondary grouting pipe 84 is installed on the inserted anchor rod 10 or anchor cable 8.
And step 9: as shown in fig. 10, after the cement slurry in the hole reaches a certain strength, the second sealing sleeve 7 and the ball valve 4 are removed; and then carrying out secondary splitting grouting.
Step 10: and after the cement slurry in the hole reaches the required strength, tensioning and anchoring the anchor rod 10 or the anchor cable 8.
The wall 1 in this embodiment may be an underground supporting structure such as an underground continuous wall, a pile plate wall, or a pile body structure in pile-anchor support.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. The utility model provides a be located following stock construction leak protection water sealing device of groundwater water level which characterized in that: including orifice pipe (3) that connect gradually, ball valve (4) and second seal bushing (7), install on wall body (1) orifice pipe (3), can supply stock (10) or anchor rope (8) to pass under ball valve (4) the open mode, be full of colloid (9) that acrylate condenses into in second seal bushing (7), stock (10) or anchor rope (8) insert to the hole bottom in-process from second seal bushing (7), colloid (9) are with stock (10) or anchor rope (8) parcel, prevent that downthehole liquid from flowing from the drill way.
2. A leakproof sealing device for anchor rod construction below the groundwater level as claimed in claim 1, wherein: the second sealing sleeve (7) is provided with a detachable end cover (71), and the end cover (71) is provided with a slurry inlet hole (72) for injecting acrylate and an exhaust hole (73) for exhausting gas in the second sealing sleeve (7).
3. A leakproof sealing device for anchor rod construction below the groundwater level as claimed in claim 2, wherein: and flanges are arranged at two ends of the second sealing sleeve (7), and the second sealing sleeve (7) is connected with the ball valve (4) in a flange manner and is connected with the end cover (71) through bolts.
4. A leakproof sealing device for anchor rod construction below the groundwater level as claimed in claim 1, wherein: the inner wall of the second sealing sleeve (7) is arranged in a diameter-variable mode, and the inner diameter of the position close to the ball valve (4) is small.
5. A leakproof sealing device for anchor rod construction below the groundwater level as claimed in claim 1, wherein: the end of the inner wall of the second sealing sleeve (7) close to the ball valve (4) is fixedly connected with a reducing annular sheet for preventing the colloid (9) from entering the ball valve (4); the inner diameter of the reducing ring-shaped piece is larger than the outer diameter of the anchor rod or the anchor cable.
6. A leakproof sealing device for anchor rod construction below the groundwater level as claimed in claim 1, wherein: the circumferential surface of the exposed part of the orifice pipe (3) is provided with a water pressure balance port, and the water pressure balance port is provided with a slag discharge pipe and a slag discharge valve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555643.0U CN209891223U (en) | 2019-04-22 | 2019-04-22 | Anchor rod construction water leakage prevention sealing device located below underground water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555643.0U CN209891223U (en) | 2019-04-22 | 2019-04-22 | Anchor rod construction water leakage prevention sealing device located below underground water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209891223U true CN209891223U (en) | 2020-01-03 |
Family
ID=69019227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920555643.0U Active CN209891223U (en) | 2019-04-22 | 2019-04-22 | Anchor rod construction water leakage prevention sealing device located below underground water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209891223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554590A (en) * | 2020-11-11 | 2021-03-26 | 东方雨虹建筑修缮技术有限公司 | Curtain grouting method |
-
2019
- 2019-04-22 CN CN201920555643.0U patent/CN209891223U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554590A (en) * | 2020-11-11 | 2021-03-26 | 东方雨虹建筑修缮技术有限公司 | Curtain grouting method |
| CN112554590B (en) * | 2020-11-11 | 2022-07-15 | 东方雨虹建筑修缮技术有限公司 | Curtain grouting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207739264U (en) | A kind of Grouting Pipe | |
| CN205296175U (en) | High pressure -bearing depth of water excavation supporting stock structure | |
| CN104763436A (en) | Method and device for receiving pipe jacking machine under condition of high water pressure complicated geological conditions | |
| CN206246920U (en) | A kind of rapid pipeline repairing device | |
| CN106352197A (en) | Rapid first-aid repair device and method for pipeline | |
| CN112878909A (en) | Anti-gushing method for drilling horizontal freezing hole of foundation pit | |
| CN209891223U (en) | Anchor rod construction water leakage prevention sealing device located below underground water level | |
| CN203702071U (en) | Water inrush preventing drill ejecting device for water exploration and grouting construction of vertical shaft | |
| CN109853477B (en) | Centralized leakage blocking structure and method for changing dynamic water into static water in gallery | |
| CN215165624U (en) | Grouting device behind cavity of hollow precast pile | |
| CN112681535B (en) | Waterproof sealing assembly for vertical floor penetrating pipeline and leakage detection and construction method thereof | |
| CN111255161B (en) | Steel bar connection grouting sleeve structure and construction process | |
| CN210858602U (en) | Novel pressure-bearing sleeve for water detecting and draining orifice | |
| CN101705823A (en) | Delayed coagulation well cementation method of high-pressure gas underground gas storage wells | |
| CN115030230A (en) | Pile-first type slurry filling sealing packer and sealing method | |
| CN101979820A (en) | Process for sealing elevation drill hole water-stopping sleeves | |
| CN110055963B (en) | Construction process of anchor rod below groundwater level | |
| CN109487808A (en) | A kind of leak stopping system of composite paster slip casting | |
| CN100398782C (en) | Vertical pipe vacuum pre pressing bidirectional slip casting method and sealed slip casting system thereof | |
| CN210370586U (en) | Water outlet elevation drilling and grouting water stopping device | |
| CN114703878A (en) | Plugging and draining device for dewatering well and construction method | |
| CN114645691A (en) | Ground straight-through type through-lane drilling and well cementation downhole device and well cementation construction method | |
| CN209468762U (en) | A kind of novel grouting device | |
| CN209308053U (en) | A kind of leak stopping system of composite paster slip casting | |
| CN209855833U (en) | Slip casting leak-proof stop plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |