CN212225159U - Horizontal MJS construction method pile orifice blowout-stopping sealing device - Google Patents
Horizontal MJS construction method pile orifice blowout-stopping sealing device Download PDFInfo
- Publication number
- CN212225159U CN212225159U CN202020215299.3U CN202020215299U CN212225159U CN 212225159 U CN212225159 U CN 212225159U CN 202020215299 U CN202020215299 U CN 202020215299U CN 212225159 U CN212225159 U CN 212225159U
- Authority
- CN
- China
- Prior art keywords
- flange
- sealing
- water
- wall
- tube coupling
- 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
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model relates to a horizontal MJS worker method stake drill way blowout prevention sealing device, including multistage tube coupling, drill way pipe, fastening flange, loop through flange fixed connection between the multistage tube coupling, the first section tube coupling passes through the gate valve and connects the drill way pipe, the end fixed connection fastening flange of the last section tube coupling, the drill way pipe is connected in underground continuous wall face through linking the wall flange fixed connection, seal through the polyurethane sealing gasket between linking the wall flange and the wall, be used for preventing wall and linking the wall flange clearance in the construction process and leak the thick liquid; the flange joints of the multi-section pipe joints are sealed through water-stop sealing rubber mats, the fastening flange and the end of the rear-section pipe joint are sealed through the water-stop sealing rubber mats, and the water-stop sealing rubber mats are sleeved on the outer side of the drill rod and used for sealing and stopping water on the outer side of the drill rod. The utility model provides a sealing device is only spouted in drill way is applicable to the horizontal drilling that adopts all-round high-pressure injection slip casting method (MJS worker method) and the prevention of drill way sand gushing and leaking that appear in the injection slip casting construction.
Description
Technical Field
The utility model relates to a horizontal MJS construction method of underground engineering construction, in particular to horizontal drilling and injection slip casting construction device adopting an all-round high-pressure injection slip casting method (MJS construction method).
Background
At present, during the omnibearing high-pressure jet grouting construction process in the horizontal MJS construction method of underground engineering construction, when drilling or jet grouting is carried out on a confined water stratum, the phenomenon of orifice sand gushing or slurry leakage often occurs, and the construction safety is endangered. Therefore, a horizontal MJS construction method pile orifice blowout-stopping sealing device is needed for preventing orifice sand gushing or slurry leakage during hole leading and jet grouting.
Disclosure of Invention
To the sand gushing or the hourglass thick liquid problem that exists in the horizontal drilling construction of above-mentioned present all-round high pressure injection slip casting method (MJS worker method), the utility model provides a horizontal MJS worker method stake drill way ends and spouts sealing device utilizes expansion bolts will link the wall flange riveting at underground continuous wall, utilizes polyurethane to seal between flange and the wall, seals the drill way at drilling and injection slip casting in-process, prevents the sand gushing and the hourglass thick liquid problem that take place among the work progress.
In order to achieve the above object, the utility model adopts the following technical scheme: a horizontal MJS construction method pile orifice blowout-stopping sealing device comprises a plurality of sections of pipe joints, an orifice pipe and a fastening flange, wherein the plurality of sections of pipe joints are sequentially and fixedly connected through the flange; the flange joints of the multiple sections of pipe joints are sealed through water-stop sealing rubber mats, the fastening flange and the end of the rear section of pipe joint are sealed through the water-stop sealing rubber mats, and the water-stop sealing rubber mats are sleeved on the outer side of the drill rod and used for sealing water outside the drill rod.
Further, the water stop sealing rubber gasket is composed of two layers of soft rubber water stops and three layers of hard rubber sealing gaskets, wherein each layer of soft rubber water stop sheet is arranged between the two layers of hard rubber sealing gaskets.
Further, install manometer, arrange thick liquid valve and benefit thick liquid valve on the orifice pipe respectively, wherein, the manometer is used for monitoring the size of pore pressure in the work progress, carries out the release through arranging thick liquid valve when orifice pressure exceedes the maximum set value, and through mending thick liquid valve toward downthehole slip casting mud or grout when orifice pressure exceedes minimum set value to keep the ground internal pressure balance, prevent that the pore wall from collapsing, orifice gushing sand or leaking the thick liquid.
Further, the pressure gauge is a diaphragm shock-proof pressure gauge.
Furthermore, the gate valve is a manual gate valve, and when the drill bit is pulled out from the orifice pipe, the gate valve can be flexibly closed to seal and stop water, so that the orifice is prevented from surging suddenly.
Further, the hard rubber gasket is a polyurethane gasket.
The utility model has the advantages that: the wall connecting flange is fixedly riveted on the wall surface of the underground continuous wall by using expansion bolts, the flange and the wall surface are sealed by using polyurethane, sealing devices are used for sealing and stopping water outside the drill rod in the drilling and injection grouting construction processes, and the gate valve is used for stopping water after the drill rod is extracted out of a hole, so that sand gushing or slurry leakage of the hole opening in the hole leading and injection grouting processes is prevented.
The utility model provides a sealing device is only spouted in drill way is applicable to the horizontal drilling that adopts all-round high-pressure injection slip casting method (MJS worker method) and the prevention of drill way sand gushing and leaking that appear in the injection slip casting construction.
Drawings
FIG. 1 is a schematic structural view of an orifice blowout-stopping sealing device according to an embodiment of the present invention;
description of reference numerals: 1-connecting bolts; 2-a polyurethane gasket; 3-a pressure gauge; 4-a slurry discharge valve; 5-slurry supplementing valve; 6-a gate valve; 7-front section pipe joint; 8-intermediate pipe section; 9-rear section pipe joint; 10-fastening flange, 11-orifice pipe; 12-soft rubber water stop sheets; 13-wall connecting flange.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings, but the present invention is not limited to the embodiments, and the protection scope of the present invention should be included in all similar structures and similar changes of the present invention.
As shown in fig. 1, the embodiment of the present invention: a horizontal MJS construction method pile orifice blowout prevention sealing device is composed of a front section pipe joint 7, a middle pipe joint 8, a rear section pipe joint 9, an orifice pipe 11, a water stop sealing rubber gasket seal and a fastening flange 10 of an end head. 7 one ends of anterior segment tube coupling are passed through 6 connecting orifice pipes 11 of gate valve, and 7 other ends of anterior segment tube coupling are through 8 fixed connection back end tube couplings 9 of middle tube coupling. The orifice pipe 11 is fixedly riveted on the wall surface of the underground continuous wall through the wall connecting flange 13 by using expansion bolts, and the wall connecting flange 13 and the wall surface are sealed by using the polyurethane sealing gasket 2, so that slurry leakage at the gap between the wall surface and the wall connecting flange 13 in the construction process is prevented. Between anterior segment tube coupling 7 and middle tube coupling 8 and between middle tube coupling 8 and the back end tube coupling 9 all seal through stagnant water sealing rubber mat. The end of the rear section pipe joint 9 is fixedly connected with a fastening flange 10 through a connecting bolt 1, and a water-stopping sealing rubber gasket is adopted between the fastening flange 10 and the end of the rear section pipe joint 9 for sealing.
The length of the front section pipe joint 7 connected with the gate valve 6 is not smaller than 40cm, the length of the rear section pipe joint 9 is 60cm, and the length of the middle section pipe joint 8 is 20 cm. When the drill bit is located anterior segment tube coupling 7, guarantee that back twice stagnant water seals cushion can closely wrap up and seal up in the drilling rod outside. Each water-stopping sealing rubber gasket consists of two layers of soft rubber water-stopping sheets 12 with the inner diameter phi of 75mm and three layers of hard rubber sealing gaskets with the inner diameter phi of 120mm, wherein each layer of soft rubber water-stopping sheet is arranged between the two layers of hard rubber sealing gaskets. The water-stopping sealing rubber gasket is sleeved on the outer side of the drill rod, and the soft rubber water-stopping sheet has good elasticity and wear resistance, so that the rubber water-stopping sheet is not damaged when the drill rod stretches and rotates. The hard rubber gasket is a polyurethane gasket 2.
The orifice pipe 11 is a seamless pipe with the inner diameter phi of 200mm and the outer diameter phi of 219mm, the length is preferably 300mm, and a pressure gauge 3, a slurry discharge valve 4 and a slurry supplement valve 5 are arranged. The pressure gauge 3 is a diaphragm shock-proof pressure gauge, the measuring range of the pressure gauge is not more than 10MPa, and the diaphragm shock-proof pressure gauge is used for monitoring the pressure in the hole in the construction process. The pulp discharge valve 4 adopts a DN50 ball valve, and is convenient for pulp discharge and pressure relief when the pressure of an orifice is increased. The slurry supplementing valve 5 adopts a DN32 ball valve and is used for supplementing slurry into the hole in the process of hole guiding and slurry spraying so as to maintain the underground pressure; and the grouting material is also used for secondary grouting after injection grouting is finished so as to fill a cavity formed after cement slurry in the hole is solidified.
The gate valve 6 adopts a manual gate valve with the diameter DN200, is arranged between the orifice pipe 11 and the sealing device, and can flexibly close the gate valve to seal and stop water when the drill bit is drawn out from the orifice pipe, so that the orifice is prevented from suddenly gushing.
When the orifice blowout-stopping sealing device is installed, firstly, the position is located on the wall surface according to the position of the pile position center and the position of the bolt of the wall connecting flange, the bolt hole is drilled by using an electric drill, the wall connecting flange with the short pipe is fixed on the wall surface by using the expansion bolt, the center of the flange is ensured to be coincided with the pile position center, and the pipeline center line of the blowout-stopping sealing device is perpendicular to the wall surface. Polyurethane is coated between the flange and the wall surface for sealing, and the periphery of the flange is coated by using quick-setting and quick-hardening cement to prevent slurry leakage in the construction process.
Then the gate valve is connected with the orifice pipe by the flange, and a rubber sealing gasket is arranged between the gate valve and the flange and is firm in order to prevent water leakage between the gate valve and the flange.
After the gate valve is installed, a diamond water mill drilling machine is used for drilling the underground continuous wall to take cores, after the core taking drill bit penetrates through the foundation pit enclosure structure, the drilling is stopped immediately, the drill bit is drawn out from the orifice pipe to take out a core sample, the gate valve is closed immediately, and the orifice gushing is prevented.
And finally, installing a sealing device. In order to prevent the drill bit from damaging the sealing sheet when passing through the sealing device, the drill bit can be installed by firstly penetrating the rear two sealing rubber gaskets, the rear section and the middle section pipe joint into the drill rod, and then the whole sealing device is tightly connected with the gate valve flange after the drill bit is arranged in the front section pipe joint.
Claims (3)
1. The utility model provides a horizontal MJS worker method stake drill way ends and spouts sealing device, includes multistage tube coupling, orifice pipe, fastening flange, loops through flange fixed connection between the multistage tube coupling, and the first section tube coupling passes through gate valve connection orifice pipe, and the end fixed connection fastening flange of last section tube coupling, its characterized in that: the orifice pipe is fixedly connected to the wall surface of the underground continuous wall through a wall connecting flange, and the wall connecting flange and the wall surface are sealed through a polyurethane sealing gasket and used for preventing slurry leakage at the gap between the wall surface and the wall connecting flange in the construction process; the flange joints of the multiple sections of pipe joints are sealed through water-stop sealing rubber mats, the fastening flange and the end of the rear section of pipe joint are sealed through the water-stop sealing rubber mats, and the water-stop sealing rubber mats are sleeved on the outer side of the drill rod and used for sealing water outside the drill rod.
2. The horizontal MJS construction pile orifice blowout prevention sealing device of claim 1, wherein: the water-stopping sealing rubber gasket is composed of two layers of soft rubber water stopping and three layers of hard rubber sealing gaskets, wherein each layer of soft rubber water stopping sheet is arranged between the two layers of hard rubber sealing gaskets.
3. The horizontal MJS construction pile orifice blowout stop sealing device of claim 2, wherein: the hard rubber sealing gasket is a polyurethane sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020215299.3U CN212225159U (en) | 2020-02-27 | 2020-02-27 | Horizontal MJS construction method pile orifice blowout-stopping sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020215299.3U CN212225159U (en) | 2020-02-27 | 2020-02-27 | Horizontal MJS construction method pile orifice blowout-stopping sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212225159U true CN212225159U (en) | 2020-12-25 |
Family
ID=73914124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020215299.3U Active CN212225159U (en) | 2020-02-27 | 2020-02-27 | Horizontal MJS construction method pile orifice blowout-stopping sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212225159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796699A (en) * | 2020-12-29 | 2021-05-14 | 中煤隧道工程有限公司 | High-pressure blowout preventer with emergency plugging cabin and installation and use methods |
| CN114293559A (en) * | 2021-12-23 | 2022-04-08 | 上海市机械施工集团有限公司 | Horizontal MJS construction method |
-
2020
- 2020-02-27 CN CN202020215299.3U patent/CN212225159U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796699A (en) * | 2020-12-29 | 2021-05-14 | 中煤隧道工程有限公司 | High-pressure blowout preventer with emergency plugging cabin and installation and use methods |
| CN114293559A (en) * | 2021-12-23 | 2022-04-08 | 上海市机械施工集团有限公司 | Horizontal MJS construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107642360B (en) | Full-section advanced pre-grouting construction method | |
| CN101429764B (en) | Infiltration water detection and plugging renovation devices and methods for underground continuous wall groove segment seam | |
| CN110645440A (en) | Trenchless repairing device and method for large-diameter concrete drain pipe disjointing | |
| CN212225159U (en) | Horizontal MJS construction method pile orifice blowout-stopping sealing device | |
| CN108756898A (en) | Using the front pre-grouting construction method of HSC grouting materials | |
| CN113153354A (en) | Supporting method based on pressure-stabilizing pressure-retaining grouting and grouting control equipment | |
| CN201424658Y (en) | Water leakage detection of underground continuous wall groove seams and block repair device | |
| CN110762287A (en) | Curved pipe jacking interface water stop structure suitable for high water pressure condition | |
| CN112482415B (en) | Consolidation grouting method for underground cavern under high external water pressure and flowing water condition | |
| CN210858602U (en) | Novel pressure-bearing sleeve for water detecting and draining orifice | |
| CA3217077C (en) | Single-layer shaft lining with joint sealing structure and grouting system and its construction method | |
| CN216043775U (en) | Air bag type water stop sealing device for shield tunnel portal | |
| CN111997633A (en) | Construction method for replacing shield tail sealing brush of shield tunneling machine | |
| CN113464175A (en) | Air bag type water stop sealing device for shield tunnel portal and construction method | |
| CN106638644B (en) | A kind of deep sand gravel layer provisions for grouting and the method for carrying out comprehensive grouting using the device | |
| CN104564105A (en) | Device and method for grouting and reinforcing secondary casing pipe of coal seam floor | |
| CN210978736U (en) | Curved pipe jacking interface water stop structure suitable for high water pressure condition | |
| CN214662574U (en) | Wall bushing sealing structure | |
| CN112796773B (en) | Steel sleeve construction process and assembly method | |
| CN210194598U (en) | Foundation support engineering ground is wall construction joint case device even | |
| CN206319330U (en) | A kind of deep sand gravel layer provisions for grouting | |
| CN219953301U (en) | Pre-buried pipe fitting structure of drilling or tube well of leak-stopping shroud | |
| CN112302688B (en) | End plugging device suitable for back grouting of fabricated tunnel supporting structure and construction method thereof | |
| CN211900645U (en) | Leakage repairing device for tunnel portal of top pipe section | |
| CN217897884U (en) | Valve type double-perforated-pipe back-pressure grouting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |