CN105064386A - Open caisson sinking device by drilling absorption method - Google Patents
Open caisson sinking device by drilling absorption method Download PDFInfo
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- CN105064386A CN105064386A CN201510478713.3A CN201510478713A CN105064386A CN 105064386 A CN105064386 A CN 105064386A CN 201510478713 A CN201510478713 A CN 201510478713A CN 105064386 A CN105064386 A CN 105064386A
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- cutting system
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Abstract
The invention relates to an open caisson sinking device by a drilling absorption method. The device consists of a cutter cutting system, a driving device, a high-pressure water inlet pipeline, an intake pipeline and a mud outlet pipeline, wherein the cutter cutting system is connected with the driving device; the rotating speed is adjusted through the driving device; the cutter cutting system is used for quickly cutting soil layers with various rigid degrees; a water inlet bin is arranged on the cutter cutting system, is connected with the high-pressure water inlet pipeline and the intake pipeline, and is used for stirring cutter soil to high-concentration slurry to prevent the drilling wrapping phenomenon of a cutter; and the cutter cutting system is connected with a mud sucking pump through the mud outlet pipeline, and is used for sucking the slurry in a well outside the well. The device can solve the problem of sinking difficulty of an ultradeep open caisson under rigid terrain condition in use of a no-drainage sinking process, and enables an open caisson sinking construction technology to be further applied to the sewage deep sea drainage in coastal areas.
Description
Technical field
The present invention relates to a kind of equipment of well sinking, especially a kind of for adopting the ultra-deep well sinking device of non-drainage subsidence technique under hard geological conditions.
Background technology
Open caisson construction method develops into a kind of form imbedding various undergrounds industrial construction and civil air defense constructions and installations space enclosing structure in Soft Soil Layer gradually.Along with country is for the further raising of environmental requirement, coastal area industrial wastewater and city domestic sewage need carry out deep sea emission, and open caisson is further obvious as indirect force point effect in extra long distance pipeline laying.For overcoming the construction Difficulties of ultra-deep well sinking under complex geological condition in marine site, coastal area, must to the research and development of well sinking new technology, new equipment.
Summary of the invention
The present invention will provide a kind of " boring suction method " well sinking device, passes through this technical problem of complex geological condition for solving ultra-deep open caisson.
For achieving the above object, technical scheme of the present invention is: a kind of " boring suction method " well sinking device, be made up of knife cutting system, drive unit, high-pressure water inlet pipeline, air inlet pipeline and mud extraction pipeline, described knife cutting system connecting drive device, cutterhead rotating speed is regulated by drive unit, for cutting the soil layer of various hardness fast, described knife cutting system is provided with water storage, water storage connects high-pressure water inlet pipeline and air inlet pipeline, for cutterhead soil shear failure is become high concentration slurry, prevent cutterhead from occurring " bag bores " phenomenon; Described knife cutting system connects dredge pump, for being drawn to outside well by the mud in well by mud extraction pipeline.
Described high-pressure water inlet pipeline and air inlet pipeline are 2 writing brushes.Described mud extraction pipeline is 6 cun of mud line.The speed of the cutterhead down-cutting soil body in described knife cutting system is 2cm per minute.
The invention has the beneficial effects as follows: this equipment hangs in well by 55T crawler crane, 360 ° can be realized and cut the soil body in well without dead angle; Equipment arranges the independent cutting system of 2 cover, and 2 cutterheads oppositely should cut the soil body, solve when the single direction rotary cutting soil body, the problem that the supporting high-pressure water inlet pipeline of easy generation and air inlet pipeline are wound around mutually.Simultaneously, " bore and inhale " equipment according to the situation of change of soil layer, replaceable different cutter, regulate knife cutting speed, utilize both sides water under high pressure that clod on cutterhead is stirred into mud, by 6 cun of mud line, mud is discharged in well, thus solve the difficult problem fetched earth in ultra-deep open caisson non-drainage subsidence chance complex geological condition well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
As shown in Figure 1, a kind of " boring suction method " well sinking device, is made up of knife cutting system 1, drive unit 3, high-pressure water inlet pipeline, air inlet pipeline 4 and mud extraction pipeline 5.
Knife cutting system 1 connecting drive device 3, cutterhead rotating speed is regulated by drive unit 3, for cutting the soil layer of various hardness fast, knife cutting system 1 is provided with water storage 2, water storage 2 connects high-pressure water inlet pipeline and air inlet pipeline 4, for cutterhead soil shear failure is become high concentration slurry, prevent cutterhead from occurring " bag bores " phenomenon; Knife cutting system 1 connects dredge pump by mud extraction pipeline 5, for being drawn to outside well by the mud in well.
High-pressure water inlet pipeline and air inlet pipeline 4 are 2 writing brushes.Mud extraction pipeline 5 is 6 cun of mud line.The speed of the cutterhead down-cutting soil body in knife cutting system 1 is 2cm per minute.Complete equipment net weight is about 3t.(supporting pipeline is not included)
Site operation flow process is as follows:
55T crawler crane is adopted equipment to be hung mud face to well, after the pipeline UNICOM of equipment pipeline and ground, ground handling operator starts cutterhead rotary cutting system, simultaneously, the water supply of 2 cun, cutterhead both sides, supply air line press-in water under high pressure and compressed air, cutterhead is with the speed of about the 2cm per minute slowly down-cutting soil body, and equipment is synchronously slowly transferred by crane, finally, by the 6 writing brush roads of 6 cun, ground dredge pump by " bore and inhale " equipment, the mud in well is drawn to outside well.The current value that site operation personnel can rotate according to the concentration of hydraulic mixture of discharging, cutterhead, judges that soil body soft or hard degree regulates the cutting speed of cutterhead.
Application implementation example of the present invention
Engineering is positioned at offshore sea waters, the North Sea, and engineering entity is the sewage steel pipe of 1 external diameter 2000mm, wall thickness 22mm, sewage conduct length 3600m, is divided into two sections of (2180m push pipe section 1+1420m push pipe section 2) jacking constructions.Arrange 2 open caissons as push pipe starting well, inshore side arranges the starting well of 1# open caisson as push pipe section 1, and the received well that 2# open caisson is push pipe section 1 is the starting well of push pipe section 2.
This engineering 2 open caissons are all positioned on 2 man-made islands in marine site, well sinking need pass through complicated stratum, comprise 10., (12) medium coarse sand and 8., (11) silty clay, open caisson need adopt non-drainage subsidence technique, there is not the bad phenomenon such as drift sand at sinking watching in guarantee, guarantees the Stability Analysis of Structures of man-made island.Silty clay layer (bearing capacity f can be passed through smoothly by open caisson to make open caisson
ak=280KPa, cohesion force C=50KPa), equipment well sinking " is bored and inhales " in research and development, can save a large amount of human and material resources and financial resources, for engineering brings good benefit.
Claims (4)
1. one kind " boring suction method " well sinking device, by knife cutting system (1), drive unit (3), high-pressure water inlet pipeline, air inlet pipeline (4) and mud extraction pipeline (5) composition, it is characterized in that: described knife cutting system (1) connecting drive device (3), cutterhead rotating speed is regulated by drive unit (3), for cutting the soil layer of various hardness fast, described knife cutting system (1) is provided with water storage (2), water storage (2) connects high-pressure water inlet pipeline and air inlet pipeline (4), for cutterhead soil shear failure is become high concentration slurry, prevent cutterhead from occurring " bag bores " phenomenon, described knife cutting system (1) connects dredge pump, for being drawn to outside well by the mud in well by mud extraction pipeline (5).
2. " boring suction method " well sinking device according to claim 1, is characterized in that: described high-pressure water inlet pipeline and air inlet pipeline (4) are 2 writing brushes.
3. " boring suction method " well sinking device according to claim 1, is characterized in that: described mud extraction pipeline (5) is 6 cun of mud line.
4. " boring suction method " well sinking device according to claim 1, is characterized in that: the speed of the cutterhead down-cutting soil body in described knife cutting system (1) is 2cm per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478713.3A CN105064386A (en) | 2015-08-03 | 2015-08-03 | Open caisson sinking device by drilling absorption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478713.3A CN105064386A (en) | 2015-08-03 | 2015-08-03 | Open caisson sinking device by drilling absorption method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105064386A true CN105064386A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510478713.3A Pending CN105064386A (en) | 2015-08-03 | 2015-08-03 | Open caisson sinking device by drilling absorption method |
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| CN (1) | CN105064386A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113088A (en) * | 2017-06-23 | 2019-01-01 | 五冶集团上海有限公司 | A kind of slush pump floating drum and production method for open caisson non-drainage subsidence |
| CN113235632A (en) * | 2021-04-14 | 2021-08-10 | 中铁二十四局集团有限公司 | Open caisson sinking device capable of automatically correcting deviation in real time and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152221A (en) * | 1979-05-17 | 1980-11-27 | Taiho Kensetsu Kk | Sinking method of caisson |
| CN102433881A (en) * | 2011-12-28 | 2012-05-02 | 中铁大桥局股份有限公司 | Soil borrowing device for extra-large open caisson and using method of soil borrowing device |
| CN203035081U (en) * | 2013-01-29 | 2013-07-03 | 王连声 | Multifunctional rotary drilling rig |
| CN103397891A (en) * | 2013-08-13 | 2013-11-20 | 上海力行工程技术发展有限公司 | Cutting blade disc of muddy water balance push bench |
| CN204187119U (en) * | 2014-09-22 | 2015-03-04 | 韶关市铁友建设机械有限公司 | A kind of push-bench revolves and digs mud discharging device |
| CN204456158U (en) * | 2014-12-25 | 2015-07-08 | 中铁大桥局集团有限公司 | Quick drawing out soil equipment under a kind of deep water conditions |
| CN104790449A (en) * | 2015-04-29 | 2015-07-22 | 河北新钻钻机有限公司 | Submersible type dredger |
-
2015
- 2015-08-03 CN CN201510478713.3A patent/CN105064386A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152221A (en) * | 1979-05-17 | 1980-11-27 | Taiho Kensetsu Kk | Sinking method of caisson |
| CN102433881A (en) * | 2011-12-28 | 2012-05-02 | 中铁大桥局股份有限公司 | Soil borrowing device for extra-large open caisson and using method of soil borrowing device |
| CN203035081U (en) * | 2013-01-29 | 2013-07-03 | 王连声 | Multifunctional rotary drilling rig |
| CN103397891A (en) * | 2013-08-13 | 2013-11-20 | 上海力行工程技术发展有限公司 | Cutting blade disc of muddy water balance push bench |
| CN204187119U (en) * | 2014-09-22 | 2015-03-04 | 韶关市铁友建设机械有限公司 | A kind of push-bench revolves and digs mud discharging device |
| CN204456158U (en) * | 2014-12-25 | 2015-07-08 | 中铁大桥局集团有限公司 | Quick drawing out soil equipment under a kind of deep water conditions |
| CN104790449A (en) * | 2015-04-29 | 2015-07-22 | 河北新钻钻机有限公司 | Submersible type dredger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113088A (en) * | 2017-06-23 | 2019-01-01 | 五冶集团上海有限公司 | A kind of slush pump floating drum and production method for open caisson non-drainage subsidence |
| CN113235632A (en) * | 2021-04-14 | 2021-08-10 | 中铁二十四局集团有限公司 | Open caisson sinking device capable of automatically correcting deviation in real time and construction method |
| CN113235632B (en) * | 2021-04-14 | 2022-07-08 | 中铁二十四局集团有限公司 | Open caisson sinking device capable of automatically correcting deviation in real time and construction method |
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Application publication date: 20151118 |