CN103628507A - Anti-floating construction method for passing through seabed shallow buried soil for pipe jacking - Google Patents
Anti-floating construction method for passing through seabed shallow buried soil for pipe jacking Download PDFInfo
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- CN103628507A CN103628507A CN201310579715.2A CN201310579715A CN103628507A CN 103628507 A CN103628507 A CN 103628507A CN 201310579715 A CN201310579715 A CN 201310579715A CN 103628507 A CN103628507 A CN 103628507A
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Abstract
The invention discloses an anti-floating construction method for passing through seabed shallow buried soil for a pipe jacking. The method is characterized by comprising the following steps that 101, before the pipe jacking jacks into front seabed shallow buried soil, spiral-spraying and reinforcing processing is conducted on the pipe jacking, namely, spiral-spraying piles are arranged above and at the two sides of the designed position of the pipe jacking; 103, the pipe jacking anti-floating process is conducted during the jacking-into process of the pipe jacking, and the pipe jacking anti-floating process comprises the steps of carrying out the counter weight process inside the pipe jacking and adjusting the head piece in the front of the pipe jacking to enable the head piece to tilt downwards slightly, so that certain settling volume is generated for the pipe jacking in advance; 105, after the pipe jacking passes through the seabed shallow buried soil area, the cement paste reinforcing process is conducted on the soil body around the pipe jacking within a certain range. According to the construction method, due to the fact that a series of construction measures are taken before the pipe-jacking jacking-into process, during the pipe jacking jacking-into process and after the pipe-jacking jacking-into process, the huge seabed buoyancy is effectively resisted to prevent pipelines from floating upwards, and therefore the pipe jacking can smoothly pass through the seabed shallow buried soil area.
Description
Technical field
The present invention relates to the construction technology of push pipe, refer in particular to the anti-floating construction technology while being subject to larger buoyancy in the shallow earthing process at the bottom of a kind of push pipe passes through rivers,lakes and seas.
Background technology
Increasingly mature along with pipe-jacking technology, push pipe in urban water supply and drainage, oil, natural gas, electric power equal energy source is carried and the application of the aspect such as pollution control is more and more.When jacking construction, unavoidably can encounter complicated cases such as will passing through Jiang,He,Hu, sea.Anti-floating is one of push pipe technical barrier that need to solve during jacking construction under water, and particularly region the to be passed through depth of water is larger, the more shallow situation of push pipe top earthing.Push pipe passes through seabed shallow earthing construction, and to have the path of passing through longer, and earthing is more shallow, and water level is subject to fluctuation tide to affect larger feature, and the anti-floating technical problem facing in its work progress is more difficult.If the measure of anti float of taking in jacking construction process is improper, will cause push pipe floating warpage, gently cause project failure, heavy there will be life danger.
Through the retrieval to existing domestic pipe-jacking technology document, Dong Weiqi, Wen Jianwen are at < < Guangxi civil construction > > 2003, No 6, in " ' manually building island ' method push pipe passes through shallow earthing river and gushes construction technology " of delivering on pp. 52-53, utilize " artificial island method " successful implementation North Road, Dongguan City Xinhe River submain sewer pass through river and gush engineering.Zhong Xianqi, Zhou Zhiqiang etc. are at < < water supply and drainage > > 2011, No 2, utilize the interior method of placing sand bag of push pipe to solve West River water diversion engineering large diameter steel pipe push pipe and pass through ultra-shallow earth-covered river engineering on pp. 93-96 in " West River water diversion engineering large diameter steel pipe jacking construction key measures and the effect " delivered.But simple utilization " artificial island method " solves shallow earthing and crosses the gigantic project of an extra large push pipe anti-floating difficult problem, and cost is too high, the simple method of counterweight in pipe of using may be not enough to resist the huge buoyancy in seabed.Thus, industry need to have the push pipe anti-floating construction method of safer, reliable, saving, system.
Summary of the invention
To be solved by this invention is that push pipe passes through the technical barrier that the shallow earthing in seabed is subject to occurring compared with large buoyancy serious floating, thereby provides a kind of push pipe to pass through the shallow earthing anti-floating construction method in seabed.
For solving the problems of the technologies described above, technical solution of the present invention is:
Push pipe passes through the shallow earthing anti-floating construction method in seabed, comprises the following steps:
Step S101, the shallow earthing rotary jet strengthening in the front seabed of push pipe jacking is processed, above push pipe design attitude and both sides rotary churning pile is set;
Step S103, in push pipe jack-in process, push pipe anti-floating is processed, thereby comprises counterweight in push pipe pipe and adjust push pipe the place ahead head and make it slightly to have a down dip and make in advance push pipe produce a certain amount of sinking trend;
Step S105, after push pipe passes through shallow earthing district, seabed, carries out cement paste grout and strengthen processing to the soil body of certain limit around push pipe.
Further, at the bottom of the further employing of the processing of the push pipe anti-floating in described step S103 push pipe pipe, the method for blowing, pipe teeming slurry reduces the float-amount of push pipe.
Further, in described step S101, described seabed shallow earthing rotary jet strengthening handling process comprises: measure setting-out, the ship that jet grouting pile construction equipment is housed is in place, rotary churning pile offshore construction.
Further, in described step S101, the scope of described rotary jet strengthening is between the top tube diameter of 3 ~ 4 times of push pipe axis both sides.
Further, in described step S101, before the shallow earthing rotary jet strengthening in seabed is processed, first carry out ballast processing, this ballast is processed is to carry out ballast above the shallow earthing of push pipe design attitude.
Further, the ballast structure that described ballast is processed is that both sides are jackstone side slope, first backfill ramming layer between the jackstone side slope of both sides, then on ramming layer the geomembrane bag of the in-built cement of gland one deck, finally on geomembrane bag, lid is pressed one deck riprap layer again.
Further, described ballast processing construction process comprises: calculate and measure setting-out, jackstone slope construction, the finishing of jackstone side slope, ramming backfill, the geomembrane bag of the in-built cement of gland and riprap layer gland.
Further, in described step S103, carrying out counterweight in push pipe pipe is according to the buoyancy value of calculating gained, ballast material in the corresponding weight of tube coupling internal configurations, ballast material adopts the mode of sand+shaped steel, wherein layer of sand is laid on push pipe inner bottom part, and shaped steel is placed on both sides on layer of sand, and passage is left in centre.
Further, in described passage, configure the motor-driven shaped steel that can be moved flexibly of constant weight.
Further, in described step S103, described tail up by increasing the top power of head afterbody upper end jack, reduces the top power of head afterbody lower end jack simultaneously, makes head slightly have certain tilt angled down.
Further, in described step S105, until push pipe, around produce after sufficient intensity stabilization zone, counterweight in pipe is removed.And can further rotary churning pile or the ballast of shallow earthing top be removed as required.
Further, at the bottom of described push pipe pipe, the concrete grammar of blowing, pipe teeming slurry is for adopting above push pipe and lower opening, then borrowing apparatus is managed end blowing and is starched to pipe teeming, and by control valve top grouting pressure and grouting amount, regulates the deflection of floating push pipe.
Adopt after such scheme, tool of the present invention has the following advantages:
(1) method of the present invention by carrying out rotary jet strengthening to the shallow earthing in seabed or ballast is processed before push pipe jacking, in jack-in process, to managing interior counterweight or adjustment tail up or adjustment, manage all slip casting, the floating that can successfully stop push pipe, avoid the engineering accident causing due to floating, reduced property loss and casualties.
(2) the present invention also can be applicable to the situation that push pipe passes through Jiang,He,Hu.This push pipe anti-floating construction technology is safe and reliable, has wide market prospects.
Accompanying drawing explanation
Fig. 1 is the flow chart of construction method of the present invention;
Fig. 2 is construction method of the present invention rotary jet strengthening schematic diagram above the shallow earthing of sea wall;
Fig. 3 is construction method of the present invention ballast schematic diagram above the shallow earthing in seabed;
Fig. 4 is that construction method of the present invention is used the schematic diagram of ballast and rotary jet strengthening above the shallow earthing in seabed simultaneously;
Fig. 5 is construction method of the present invention counterweight schematic diagram in push pipe pipe;
Fig. 6 is the head afterbody jack schematic diagram of construction method of the present invention;
Fig. 7 is in construction method of the present invention, the schematic diagram of blowing, pipe teeming slurry at the bottom of push pipe pipe.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.Yet the present invention can be with many multi-form realizations, and should not be construed as the restriction of the embodiment being subject in this proposition.On the contrary, it is abundant and complete open in order to reach proposing these embodiment, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may amplify size and the relative size of region and equipment.
Disclosed is a kind of push pipe and pass through the shallow earthing anti-floating construction method in seabed, as shown in Figure 1, is flow chart of the present invention, and described construction method comprises the steps:
Step S101, the shallow earthing in the front seabed of push pipe jacking is processed:
The rotary jet strengthening of a, the shallow earthing in seabed is processed: as shown in Figure 2, above push pipe 1 design attitude and both sides rotary churning pile 2 is set, to reinforce.
In the present embodiment, seabed shallow earthing rotary jet strengthening handling process comprises: measure setting-out, the ship that jet grouting pile construction equipment is housed is in place, rotary churning pile offshore construction.
More specifically, the shallow earthing rotary churning pile 2 consolidation process implementation methods in seabed are: according to drawing and control coordinate, utilize total powerstation to make stake position.Rotary jet strengthening scope the best is between the top tube diameter of 3 ~ 4 times of push pipe axis both sides.According to layout point, the ship that jet grouting pile construction equipment is housed is in place, accurately determine position, hole, hydraulic drill rig boring in place, high spray booth car arrives the reinforcing design bottom degree of depth by shower nozzle injection, on starting to spray, carry to reinforcing design overhead height, shower nozzle is proposed to earth's surface and clean and be shifted.
B, shallow earthing top, seabed ballast are processed: above the shallow earthing of push pipe 1 design attitude, carry out ballast.
As shown in Figure 3, in the present embodiment, the structure of ballast can adopt: both sides are jackstone side slope 3, first backfill ramming layer 4 between the jackstone side slope 3 of both sides, the geomembrane bag 5 of the in-built cement of gland one deck on ramming layer 4 finally covers and presses one deck riprap layer 6 again on geomembrane bag 5 again.
As shown in Figure 3, the shallow earthing in seabed top ballast construction process comprises: calculate and measure setting-out, jackstone slope construction, the finishing of jackstone side slope, ramming backfill, gland geomembrane bag (in-built cement) and riprap layer gland.
Particularly, ballast construction implementation method in the shallow earthing in seabed top is: according to drawing with control coordinate calculative determination dike axis, control point, sideline and levee slope face control point coordinate and the stone dumper coordinate that berths, and adopt the total powerstation setting-out of fixing a point for method of polar coordinates.According to the layout point stone dumper that accurately berths, carry out the construction of jackstone side slope 3.The cargo ship of transportation stone is stopped after stone dumper, and the loader on stone dumper is put into the steel wire string bag by stone, and hangs into seabed with hoisting machine.Utilize total powerstation to position mending throwing ship, above-mentioned jackstone side slope 3 is repaired and renovate to leveling.After jackstone safe edge has been constructed, carry out the ramming backfill of middle cavity part, the soil property of ramming layer 4 can be selected high-quality yellow ground.Last on ramming layer 4 the geomembrane bag 5 of the thick in-built cement of gland one deck 2m, and lid is pressed the thick riprap layer 6 of one deck 2m on geomembrane bag 5.
The processing of above-mentioned two kinds of shallow earthing, can be according to the shallow thickness of earth covering in seabed and sea water advanced different choice a kind of processing method or use two kinds of methods wherein simultaneously.When two kinds of methods are used simultaneously, as shown in Figure 4.If select two kinds of modes simultaneously, first carry out ballast processing, then carry out rotary jet strengthening processing.
Step S103, in push pipe jack-in process, push pipe anti-floating is processed:
In a, push pipe jack-in process, to counterweight in push pipe pipe.
As shown in Figure 5, in the present embodiment, carry out counterweight in push pipe 1 pipe and first according to theoretical formula, calculate the suffered buoyancy of diverse location jacking pipe joints.According to the theoretical buoyancy value calculating, at the ballast material of the corresponding weight of tube coupling internal configurations.Ballast material can adopt the mode of sand+shaped steel, and wherein layer of sand 71 is laid on push pipe 1 inner bottom part, and shaped steel 72 is placed on both sides on layer of sand 71, and passage is left in centre.In passage, can configure the motor-driven shaped steel 73 that can be moved flexibly of constant weight.When the buoyancy being subject to when tube coupling becomes large, the motor-driven shaped steel 73 of constant weight is placed on to this tube coupling place.When tube coupling is subject to buoyancy and diminishes, the motor-driven shaped steel 73 that removes constant weight reduces ballast.
Thereby b, adjustment head make it slightly to have a down dip and make in advance push pipe produce a certain amount of settling amount.
As shown in Figure 6, push pipe 1 is when jacking, and its place ahead is provided with head 8 in order to remove the place ahead obstruction, and rear makes its jacking forward by main jack (not shown) forward direction ejection push pipe 1.And conventionally at the afterbody of head 8, be provided with four little jack up and down, so that head 8 jacking directions are finely tuned.
In the present embodiment, can be by increasing the top power of head 8 afterbody upper end jack 81, reduce the top power (as Fig. 5) of head 8 afterbody lower end jack 82 simultaneously, make head 8 slightly have certain tilt angled down, thereby make in advance push pipe 1 produce a certain amount of settling amount, balance a certain amount of float-amount, can be reached for the weight that reduces weight material in pipe, save the object of construction cost.
At the bottom of c, employing push pipe pipe, the method for blowing, pipe teeming slurry reduces the float-amount of push pipe.
When push pipe still cannot sink to design during axis, can adopt the mortar at the bottom of the pipe of push pipe is got rid of, and to pipe teeming, enter the mode of mortar, make to manage formation gap, the end, the mortar on pipe top by push pipe to pressing down, the push pipe of floating is sunk on design axis, the float-amount of push pipe is finely tuned.
In the present embodiment, concrete construction method as shown in Figure 7, can adopt above push pipe 1 and lower opening, and then borrowing apparatus is managed end blowing and pipe teeming slurry, and can regulate by control valve top grouting pressure and grouting amount the deflection of floating push pipe.
Step S105, after push pipe passes through shallow earthing district, seabed, carries out cement paste grout and strengthen processing to the soil body of certain limit around push pipe.
Until push pipe after around stabilization zone produces sufficient intensity by pipe in counterweight remove, and can further ballast and rotary churning pile above shallow earthing be removed as required.
Because those skilled in the art should be understood that the present invention, can realize and not depart from the spirit or scope of the present invention with many other concrete forms.Although already described embodiments of the invention, the present invention should be understood and these embodiment should be restricted to, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make and change and revise.
Claims (13)
1. push pipe passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that comprising the following steps:
Step S101, the shallow earthing rotary jet strengthening in the front seabed of push pipe jacking is processed, above push pipe design attitude and both sides rotary churning pile is set;
Step S103, in push pipe jack-in process, push pipe anti-floating is processed, thereby comprises counterweight in push pipe pipe and adjust push pipe the place ahead head and make it slightly to have a down dip and make in advance push pipe produce a certain amount of sinking trend;
Step S105, after push pipe passes through shallow earthing district, seabed, carries out cement paste grout and strengthen processing to the soil body of certain limit around push pipe.
2. push pipe according to claim 1 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: at the bottom of the further employing of the push pipe anti-floating processing push pipe pipe in described step S103, the method for blowing, pipe teeming slurry reduces the float-amount of push pipe.
3. push pipe according to claim 1 and 2 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S101, described seabed shallow earthing rotary jet strengthening handling process comprises: measure setting-out, the ship that jet grouting pile construction equipment is housed is in place, rotary churning pile offshore construction.
4. push pipe according to claim 3 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S101, the scope of described rotary jet strengthening is between the top tube diameter of 3 ~ 4 times of push pipe axis both sides.
5. push pipe according to claim 1 and 2 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S101, before the shallow earthing rotary jet strengthening in seabed is processed, first carry out ballast processing, this ballast is processed is to carry out ballast above the shallow earthing of push pipe design attitude.
6. push pipe according to claim 5 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: the ballast structure that described ballast is processed is that both sides are jackstone side slope, first backfill ramming layer between the jackstone side slope of both sides, the geomembrane bag of the in-built cement of gland one deck on ramming layer finally covers and presses one deck riprap layer again on geomembrane bag again.
7. push pipe according to claim 6 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: described ballast is processed construction process and comprised: calculate and measure setting-out, jackstone slope construction, the finishing of jackstone side slope, ramming backfill, the geomembrane bag of the in-built cement of gland and riprap layer gland.
8. push pipe according to claim 1 and 2 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S103, carrying out counterweight in push pipe pipe is according to the buoyancy value of calculating gained, ballast material in the corresponding weight of tube coupling internal configurations, ballast material adopts the mode of sand+shaped steel, wherein layer of sand is laid on push pipe inner bottom part, and shaped steel is placed on both sides on layer of sand, and passage is left in centre.
9. push pipe according to claim 8 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: the shaped steel that can be moved flexibly that configures constant weight in described passage.
10. push pipe according to claim 1 and 2 passes through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S103, described tail up, by increasing the top power of head afterbody upper end jack, reduce the top power of head afterbody lower end jack simultaneously, make head slightly have certain tilt angled down.
11. push pipes according to claim 1 and 2 pass through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S105, until push pipe, around produce after sufficient intensity stabilization zone, counterweight in pipe is removed.
12. push pipes according to claim 3 pass through the shallow earthing anti-floating construction method in seabed, it is characterized in that: in described step S105, further rotary churning pile or the ballast of shallow earthing top are removed.
13. push pipes according to claim 2 pass through the shallow earthing anti-floating construction method in seabed, it is characterized in that: at the bottom of described push pipe pipe, the concrete grammar of blowing, pipe teeming slurry is for adopting above push pipe and lower opening, then borrowing apparatus is managed end blowing and is starched to pipe teeming, and by control valve top grouting pressure and grouting amount, regulates the deflection of floating push pipe.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104533434A (en) * | 2014-12-28 | 2015-04-22 | 上海隧道工程股份有限公司 | Construction method of rectangular ultra-shallow covered soil tunnel |
| CN105804758A (en) * | 2016-04-22 | 2016-07-27 | 中国电建集团铁路建设有限公司 | Shallow-earthing, large-section and small-distance construction method for rectangular pipe jacking overpass subway tunnel |
| CN108662282A (en) * | 2018-05-31 | 2018-10-16 | 成都金玉雄辉建筑工程有限公司 | Muddy ground conduit jacking and pipe jacking construction method |
| CN109027422A (en) * | 2018-08-31 | 2018-12-18 | 广东省源天工程有限公司 | A kind of pipe jacking construction method passing through ultra-shallow earth-covered creek |
| CN109084082A (en) * | 2018-08-20 | 2018-12-25 | 上海交通大学 | A kind of pipe inner orbit formula moveable counter weight method of push pipe anti-floating construction |
| CN114526374A (en) * | 2022-01-07 | 2022-05-24 | 中基基础工程有限公司 | Jacking pipe in seabed shallow coverage stratum, design method and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105804758B (en) * | 2016-04-22 | 2018-02-16 | 中国电建集团铁路建设有限公司 | Across constructing metro tunnel method on the rectangular top pipe of the shallow small spacing of earthing big cross section |
| CN108662282A (en) * | 2018-05-31 | 2018-10-16 | 成都金玉雄辉建筑工程有限公司 | Muddy ground conduit jacking and pipe jacking construction method |
| CN109084082A (en) * | 2018-08-20 | 2018-12-25 | 上海交通大学 | A kind of pipe inner orbit formula moveable counter weight method of push pipe anti-floating construction |
| CN109027422A (en) * | 2018-08-31 | 2018-12-18 | 广东省源天工程有限公司 | A kind of pipe jacking construction method passing through ultra-shallow earth-covered creek |
| CN114526374A (en) * | 2022-01-07 | 2022-05-24 | 中基基础工程有限公司 | Jacking pipe in seabed shallow coverage stratum, design method and installation method thereof |
| CN114526374B (en) * | 2022-01-07 | 2024-05-17 | 中基基础工程有限公司 | Push pipe in submarine shallow coverage stratum, design method and installation method of push pipe |
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