CN201649082U - A device for preventing sand gushing at the opening of anchor cable drilling - Google Patents
A device for preventing sand gushing at the opening of anchor cable drilling Download PDFInfo
- Publication number
- CN201649082U CN201649082U CN2010201300918U CN201020130091U CN201649082U CN 201649082 U CN201649082 U CN 201649082U CN 2010201300918 U CN2010201300918 U CN 2010201300918U CN 201020130091 U CN201020130091 U CN 201020130091U CN 201649082 U CN201649082 U CN 201649082U
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- CN
- China
- Prior art keywords
- flange
- separate seat
- sheet rubber
- sand
- anchor cable
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a device for preventing sand gushing at a construction porthole of an anchor wire drilling hole, which comprises a tubular isolated base provided with isolated base flanges at both ends. Rubber sheet rings with inner diameter being smaller than the outer diameter of a drilling hole casing are mounted on the flange surface outside the isolated base flanges. Flange pressing plates for pressing the rubber sheet rings on the isolated base flanges are mounted outside the rubber sheet rings. The device can be mounted conveniently on an embedded conduit flange and has the function of sealing the gap between a sealing sleeve and an embedded conduit to block a sand gushing channel by means of the elastic gripping strength of the rubber sheet ring and the compact and flexible connection characteristic of the drilling hole casing. Meanwhile, the utility model does not affect drilling and hole forming and ensures the safety of anchor wire construction in a water-containing sand layer, thereby avoiding the sedimentation of a ground anchor wire outside a base pit due to sand gushing and building destruction caused by ground sedimentation outside the base pit.
Description
Technical field
The utility model relates to pattern foundation pit supporting structure anchor cable construction technical field, particularly relates to preventing in a kind of anchor cable drilling construction that the aperture from gushing the device of sand.
Background technology
The job practices of prestressing force supporting anchorage cable has been widely used in the supporting of foundation ditch, its principle is to utilize counter-force that anchor cable provides and the prestressing force to being applied by supporting and protection structure, soil pressure and effect of water pressure during the opposing excavation of foundation pit reach the purpose that the control space enclosing structure is out of shape.During anchor cable construction, at first use rig to press designing requirement boring, then in the hole of having bored, insert steel strand and grout pipe, pour into cement mortar at last or cement paste is finished anchor cable construction.When treating that cement mortar or cement paste reach design strength, supporting and protection structure is applied prestressing force and anchoring by steel strand.Yet, gap when existing anchor cable construction method is holed in water-rich sand layer between sleeve pipe and pre-buried conduit does not have shutoff, under effect of water pressure, sand grains follows underground water to gush out the gap between sleeve pipe and pre-buried conduit together, cause the outer ground sedimentation of foundation ditch, building to be subjected to security threat, so that can't carry out anchor cable construction.
The utility model content
For addressing the above problem, the utility model can prevent when the boring of a kind of anchor cable construction is provided that the aperture from gushing the device of sand, it can guarantee that anchor cable construction can carry out in water-rich sand layer, avoid the outer ground of foundation ditch anchor cable because of gushing the sand sedimentation, and can avoid the surface settlement of foundation ditch external cause and cause building destruction.
The technical scheme that its technical problem that solves the utility model adopts is:
The device of sand is gushed in a kind of anchor cable drilling construction aperture that prevents, comprise tubulose between separate seat, the two ends of described separate seat are provided with a separate seat flange, the sheet rubber circle of internal diameter less than the borehole casing external diameter is installed on the outer flange face of described separate seat flange, and the outside of described sheet rubber circle is equipped with and is used for the sheet rubber circle is pressed on flange pressing plate on the separate seat flange.
In addition, technique scheme is connected as elementary cell, can also constitute another kind and prevent that anchor cable drilling construction aperture from gushing the device of sand, it comprise a plurality of series connection tubulose between separate seat, described separate seat two ends are provided with a separate seat flange, the separate seat flange was fixedly connected between separate seat was passed through between described mutual series connection, the sheet rubber circle of internal diameter less than the borehole casing external diameter is installed between described interconnected the separate seat flange, the described sheet rubber circle of internal diameter less than the borehole casing external diameter that also be equipped with on the outer flange face of separate seat flange between two end to end, the outside of described two sheet rubber circles end to end also are equipped with and are used for the sheet rubber circle is pressed on flange pressing plate on the separate seat flange.
The beneficial effects of the utility model: the utility model by a separate seat, a separate seat flange and sheet rubber circle be fixedly connected to form an integral body can prevent the anchor cable drilling construction time aperture gush the device of sand, during anchor cable construction boring, it can be easily installed on the pre-buried conduit flange, utilize the sheet rubber circle the elasticity bond stress can with the closely flexible connection performance of borehole casing, play the gap between closed casing and the pre-buried conduit, the sand channeling is gushed in blocking-up.Simultaneously, do not influence drilling and forming hole again, can guarantee the safety of water-rich sand layer stream line construction, avoid the outer ground of foundation ditch anchor cable because of gushing the sand sedimentation, and can avoid the surface settlement of foundation ditch external cause and cause building destruction.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a plurality of separate seat cascaded structures of a utility model schematic diagram;
Fig. 3 is the utility model user mode schematic diagram;
Fig. 4 is the utility model device user mode enlarged diagram.
The specific embodiment
With reference to Fig. 1, Fig. 3 and Fig. 4, the device of sand is gushed in a kind of anchor cable drilling construction aperture that prevents of the present utility model, comprise tubulose between separate seat 1, the two ends of described separate seat 1 are provided with a separate seat flange 2, the sheet rubber circle 3 of internal diameter less than borehole casing 7 external diameters is installed on the outer flange face of described separate seat flange 2, and the outside of described sheet rubber circle 3 is equipped with and is used for sheet rubber circle 3 is pressed on flange pressing plate 4 on the separate seat flange 2.The utility model by a separate seat 1, a separate seat flange 2 and sheet rubber circle 3 be fixedly connected to form an integral body can prevent the anchor cable drilling construction time aperture gush the device of sand.During anchor cable construction boring, it can be easily installed on the flange 6 of pre-buried conduit 5, utilize sheet rubber circle 3 the elasticity bond stress can with the closely flexible connection performances of borehole casing 7, play the gap between sealing borehole casing 7 and the pre-buried conduit 5, block and gush the sand channeling.Simultaneously, do not influence drilling and forming hole again, can guarantee the safety of water-rich sand layer stream line construction, avoid the outer ground of foundation ditch anchor cable because of gushing the sand sedimentation, and can avoid the surface settlement of foundation ditch external cause and cause building destruction.
In conjunction with Fig. 2, use in this device sheet rubber circle 3 quantity what make a decision by the size of groundwater pressure, when groundwater pressure during, should increase sheet rubber circle 3 quantity with the effect of launching stress evenly greater than the elasticity bond stress of 3 pairs of borehole casings 7 of sheet rubber circle.Therefore, when needs, can connect and use this to prevent that anchor cable drilling construction aperture from gushing the device of sand, it comprise a plurality of series connection tubulose between separate seat 1, described separate seat 1 two ends are provided with a separate seat flange 2, separate seat flange 2 was fixedly connected between separate seat 1 was passed through between described mutual series connection, the sheet rubber circle 3 of internal diameter less than borehole casing 7 external diameters is installed between described interconnected the separate seat flange 2, the described sheet rubber circle 3 of internal diameter less than borehole casing 7 external diameters that also be equipped with on the outer flange face of separate seat flange 2 between two end to end, the outside of described two sheet rubber circles 3 end to end also are equipped with and are used for sheet rubber circle 3 is pressed on flange pressing plate 4 on the separate seat flange 2.Gush the elementary cell series connection of the device of sand by a plurality of described anchor cable drilling construction apertures that prevent, make a plurality of sheet rubber circles 3 be evenly distributed on the borehole casing 7 that creeps into, play the effect that sand is gushed in the multilayer shutoff.
Need to prove, in the middle of this enforcement between the separate seat flange 2, all be connected between a separate seat flange 2 and the flange pressing plate 4 by bolt.Between separate seat flange 2 be welded on the two ends of a separate seat 1.
This device job practices in water-rich sand layer is: should be in advance at the pre-buried flanged (FLGD) conduit 5 of bore position.Execute to prevent that anchor cable drilling construction aperture from gushing the device of sand and being installed on the flange of conduit 5 before the brill earlier, then use jumbolter accurately to penetrate and implement in the pre-buried conduit to advance with pipe bit to behind the hole drilling tool being passed through this device.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of the utility model spirit, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (2)
1. one kind prevents that anchor cable drilling construction aperture from gushing the device of sand, it is characterized in that: comprise tubulose between separate seat (1), the two ends of described separate seat (1) are provided with a separate seat flange (2), the sheet rubber circle (3) of internal diameter less than the borehole casing external diameter is installed on the outer flange face of described separate seat flange (2), and the outside of described sheet rubber circle (3) is equipped with and is used for sheet rubber circle (3) is pressed on flange pressing plate (4) on the separate seat flange (2).
2. one kind prevents that anchor cable drilling construction aperture from gushing the device of sand, it is characterized in that: comprise a plurality of series connection tubulose between separate seat (1), described separate seat (1) two ends are provided with a separate seat flange (2), separate seat flange (2) was fixedly connected between separate seat between described mutual series connection (1) was passed through, the sheet rubber circle (3) of internal diameter less than the borehole casing external diameter is installed between described interconnected the separate seat flange (2), the described sheet rubber circle (3) of internal diameter less than the borehole casing external diameter that also be equipped with on the outer flange face of separate seat flange (2) between two end to end, the described outside of two sheet rubber circles (3) end to end also are equipped with and are used for sheet rubber circle (3) is pressed on flange pressing plate (4) on the separate seat flange (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201300918U CN201649082U (en) | 2010-03-09 | 2010-03-09 | A device for preventing sand gushing at the opening of anchor cable drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201300918U CN201649082U (en) | 2010-03-09 | 2010-03-09 | A device for preventing sand gushing at the opening of anchor cable drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201649082U true CN201649082U (en) | 2010-11-24 |
Family
ID=43114309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201300918U Expired - Fee Related CN201649082U (en) | 2010-03-09 | 2010-03-09 | A device for preventing sand gushing at the opening of anchor cable drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201649082U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535462A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Method for constructing anchor cable on sand layer |
| CN110761293A (en) * | 2019-09-29 | 2020-02-07 | 中国二十冶集团有限公司 | Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method |
| CN113463657A (en) * | 2021-07-15 | 2021-10-01 | 北京地矿工程建设有限责任公司 | Underwater anchor cable construction process |
-
2010
- 2010-03-09 CN CN2010201300918U patent/CN201649082U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535462A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Method for constructing anchor cable on sand layer |
| CN110761293A (en) * | 2019-09-29 | 2020-02-07 | 中国二十冶集团有限公司 | Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method |
| CN110761293B (en) * | 2019-09-29 | 2021-05-14 | 中国二十冶集团有限公司 | Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method |
| CN113463657A (en) * | 2021-07-15 | 2021-10-01 | 北京地矿工程建设有限责任公司 | Underwater anchor cable construction process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20180309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |