CN211816292U - Sand-flow prevention device for water-rich sand layer anchor rod construction - Google Patents
Sand-flow prevention device for water-rich sand layer anchor rod construction Download PDFInfo
- Publication number
- CN211816292U CN211816292U CN202020324141.XU CN202020324141U CN211816292U CN 211816292 U CN211816292 U CN 211816292U CN 202020324141 U CN202020324141 U CN 202020324141U CN 211816292 U CN211816292 U CN 211816292U
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- drill rod
- rod sleeve
- foundation ditch
- stock
- sleeve pipe
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Abstract
The utility model provides a rich water sand bed stock construction prevents shifting sand device, the device includes the drill rod sleeve pipe, the drill rod sleeve pipe is located on the foundation ditch through the support, the drill rod sheathed tube one end is run through the excavation supporting and is treated the hole department to the outer soil body stock of foundation ditch, the elevation of the drill rod sleeve pipe other end is higher than the elevation of groundwater level outside the foundation ditch. The utility model discloses can improve rich water sand bed stock construction and prevent the quicksand probability, increase foundation ditch safety, enlarge stock support form application range simultaneously, be particularly suitable for rich water sand bed stock and prevent the quicksand construction.
Description
Technical Field
The utility model belongs to the technical field of the stock construction, specifically a rich water sand bed stock construction prevents shifting sand device.
Background
The anchor bolt support form is one of the options in the building foundation pit engineering, and is more suitable for the foundation pit engineering with better geological conditions such as sand bed, clay and the like. Especially in the project with the oversized foundation pit area, the supporting form does not occupy the space in the foundation pit, and the supporting form does not need to be dismantled, thereby being beneficial to the construction organization and the cost saving of the foundation pit engineering.
The anchor bolt support refers to a support mode for reinforcing the side slope of the foundation pit in engineering construction of the side slope, the foundation pit and the like. The rod body is made of steel bars, anchor cables or other materials and is driven into a hole which is drilled in advance so as to achieve the aim of supporting.
Traditional anchor bolt support adopts roofbolter at foundation ditch lateral wall drilling pore-forming back, puts the body of rod into the hole and pours into the slurry into, but this kind of method exists not enoughly: in the pore-forming process, the underground water level in the pore-forming soil body can not be higher than the elevation of a pore-forming orifice, otherwise, water and soil outside the foundation pit can form fluid and flow into the foundation pit from the pore-forming orifice, and then the ground outside the foundation pit is settled and the safety problem of the foundation pit is caused.
SUMMERY OF THE UTILITY MODEL
Technical problem to prior art existence, the utility model provides a rich water sand bed stock construction prevents shifting sand device, the device can make the stock during rich water sand bed construction the hole outflow sand can't cause the peripheral ground of foundation ditch to subside from the drilling inflow foundation ditch in, can enlarge the application scope of stock support form, practices thrift the cost.
The utility model provides a pair of rich water sand bed stock construction prevents shifting sand device, including the drill rod sleeve pipe, the drill rod sleeve pipe is located on the foundation ditch through the support, the drill rod sheathed tube one end is run through the excavation supporting and is treated the hand hole department to the outer soil body stock of foundation ditch, the elevation of the drill rod sleeve pipe other end is higher than the elevation of groundwater level outside the foundation ditch.
Preferably, the drill pipe sleeve and the foundation pit support are sealed through hemp threads.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can improve rich water sand bed stock construction and prevent the quicksand probability, increase foundation ditch safety, enlarge stock support form application range simultaneously, be particularly suitable for rich water sand bed stock and prevent the quicksand construction.
Drawings
Fig. 1 is a structural diagram of an embodiment of the present invention.
In the figure, 1, the underground water level outside a foundation pit is elevated; 2. soil outside the foundation pit; 3. an anchor rod is ready to enter the hole; 4. the supporting top of the foundation pit is elevated; 5. hemp thread; 6. supporting a foundation pit; 7. a support; 8. a drill pipe sleeve; 9. the elevation of the upper end of the drill rod sleeve; 10. a drill stem; 11. a jumbolter; 12. and (5) constructing a platform.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
As shown in fig. 1, the embodiment includes a drill pipe 8, the drill pipe 8 is fixed on a foundation pit 12 through a bracket 7, the lower end of the drill pipe 8 penetrates through a foundation pit support 6 to a position where an anchor rod of a soil body 2 outside the foundation pit is to be inserted into a hole 3, and an elevation 9 of the upper end of the drill pipe 8 is higher than an elevation 1 of an underground water level outside the foundation pit; the drill rod sleeve 8 and the foundation pit support 6 are sealed through the hemp threads 5, so that no gap exists between the drill rod sleeve 8 and the foundation pit support 6.
The implementation method of the embodiment is as follows:
s1, before the water-rich sand layer anchor rod is constructed, the construction platform 12 is trimmed, and after the anchor rod drilling machine 11 is in place, the drill rod 10 is overlapped with the position of the anchor rod hole 3 to be drilled and the axial line of the drill rod sleeve 8;
s2, a drill rod 10 of the anchor rod drilling machine 11 enters the drill rod sleeve 8 from the elevation 9 position of the upper end of the drill rod sleeve 8 and continuously drills to the position of the anchor rod hole to be drilled 3;
s3, in the drilling process, the underground water level elevation 1 outside the foundation pit is higher than the position of the anchor rod to be drilled into the hole 3, and the outside fluid of the foundation pit can flow back into the drill rod sleeve 8 and overflow to the elevation 9 at the upper end of the drill rod sleeve 8. Under the principle of differential pressure balance, the elevation 9 at the upper end of the drill rod sleeve 8 is higher than the elevation 1 of the underground water level outside the foundation pit, and fluid in the drill rod sleeve 8 cannot flow out of the pipe, so that the fluid outside the foundation pit cannot flow into the foundation pit 12 due to anchor rod construction.
The embodiment can improve the water-rich sand layer anchor rod construction and prevent the probability of drift sand, increases the safety of the foundation pit, simultaneously enlarges the application range of the anchor rod support form, and is particularly suitable for the water-rich sand layer anchor rod to prevent the drift sand construction.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.
Claims (2)
1. The utility model provides a rich water sand bed stock construction prevents drift sand device which characterized in that: the device includes the drill rod sleeve pipe, the drill rod sleeve pipe is located on the foundation ditch through the support, the sheathed tube one end of drill rod is run through the excavation and is strutted to the outer soil body stock of foundation ditch and treat hand-hole department, the elevation of the drill rod sleeve pipe other end is higher than the elevation of ground water level outside the foundation ditch.
2. A quicksand prevention device as claimed in claim 1, characterised in that: and the drill rod sleeve and the foundation pit support are sealed through hemp threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324141.XU CN211816292U (en) | 2020-03-16 | 2020-03-16 | Sand-flow prevention device for water-rich sand layer anchor rod construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324141.XU CN211816292U (en) | 2020-03-16 | 2020-03-16 | Sand-flow prevention device for water-rich sand layer anchor rod construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211816292U true CN211816292U (en) | 2020-10-30 |
Family
ID=73011238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020324141.XU Active CN211816292U (en) | 2020-03-16 | 2020-03-16 | Sand-flow prevention device for water-rich sand layer anchor rod construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211816292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492118A (en) * | 2022-07-01 | 2022-12-20 | 中建八局第三建设有限公司 | Anti-drift sand construction method for anchor rod of water-rich sand layer of oversized foundation pit |
-
2020
- 2020-03-16 CN CN202020324141.XU patent/CN211816292U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492118A (en) * | 2022-07-01 | 2022-12-20 | 中建八局第三建设有限公司 | Anti-drift sand construction method for anchor rod of water-rich sand layer of oversized foundation pit |
| CN115492118B (en) * | 2022-07-01 | 2024-03-01 | 中建八局第三建设有限公司 | Anti-drifting construction method for anchor rod of water-rich sand layer of oversized foundation pit |
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