CN104110265A - Thixotropic slurry grouting system for large-section rectangular pipe-jacking pipeline - Google Patents
Thixotropic slurry grouting system for large-section rectangular pipe-jacking pipeline Download PDFInfo
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- CN104110265A CN104110265A CN201410353455.1A CN201410353455A CN104110265A CN 104110265 A CN104110265 A CN 104110265A CN 201410353455 A CN201410353455 A CN 201410353455A CN 104110265 A CN104110265 A CN 104110265A
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Abstract
The invention discloses a thixotropic slurry grouting system for a large-section rectangular pipe-jacking pipeline. The thixotropic slurry grouting system comprises a storage tank, a pressure pump, grouting pipes, valves, pipe sections and grouting holes. The pipe sections are combined into the large-section rectangular pipe-jacking pipeline according to a certain sequence. The grouting holes are formed in the walls of the pipe sections and run through the same. The grouting holes in each pipe section are uniformly distributed along the circumference of the pipe section; the grouting holes in adjacent pipe sections are distributed in a staggered manner along the axis of the pipeline; in other words, the grouting holes are formed in different positions of the adjacent pipe sections along the axis, so that the grouting holes are distributed in the staggered manner in the pipe-jacking pipeline along the axis. The thixotropic slurry grouting system for the large-section rectangular pipe-jacking pipeline has the advantages that grouting pressure and grouting amount are reduced and an effective slurry sleeve can be formed around the pipeline.
Description
Technical field
The present invention relates to a kind of underground engineering construction field, especially relate to the thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline.
Background technology
Development along with domestic underground construction, walkway, subway access and street underground pedestrian passageway more and more adopt shield structure push-bench to construct at present, and push pipe tunnel is more and more longer, how to reduce the frictional force between jacking pipe joints and stratum, become the key of push pipe constructing tunnel.In push pipe constructing tunnel process, will inject thixotropic slurry, thixotropic slurry mainly plays two effects in jacking construction process for this reason: the one, and lubricate, becomes wet friction by the dry friction between pipeline and the soil body, reduces resistance; The 2nd, play a supportive role, under grouting pressure, make tunnel become stable, reduce the distortion that jacking construction causes.If the mud injecting can form a more complete mud sleeve of ratio at pipeline, the mud next injecting can not, to exosmosis, be stayed between pipeline and the space of mud sleeve.Therefore at push pipe constructing tunnel process need, there is a set of thixotropic slurry filling system to be used for injecting thixotropic slurry.
Thixotropic slurry filling system injects thixotropic slurry according to actual conditions in jacking construction process.The thixotropic slurry injecting spreads to surrounding centered by the center of circle of injected hole, and the diameter of diffusion is main relevant to grouting pressure with grouting amount, and pressure greatly diffusion diameter is large, and grouting amount is large, and the little diffusion diameter of grouting pressure is little, and grouting amount is little.As how less pressure and less grouting amount, to make thixotropic slurry form complete mud sleeve at pipeline quite important, if the pressure of slip casting is larger, easily brokenly during compared with Datong District to ground disturbance change established mud sleeve, not only easily cause bottom sedimentation wayward, and because grouting amount also cause greatly unnecessary waste economically.
For a long time, the injected hole being arranged on push pipe duct wall in thixotropic slurry filling system all adopts square to arrange, the setting position that is the injected hole on adjacent jacking pipe joints is identical, if the axial spacing between injected hole and circumferentially spacing are equal to the ring width of tube coupling, adopt this kind of mode to carry out slip casting, the slip casting diameter of thixotropic slurry is
l(L is tube coupling ring width), the intensified pressure needing in slip casting process, the slip casting between adjacent holes has larger combination, so not only larger to bottom disturbance, and grouting amount is also large simultaneously, not only causes bottom sedimentation wayward, and also causes economically waste.
Summary of the invention
For existing problem in the above-mentioned prior art of better solution, the invention provides a kind of thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline, reduce grouting pressure and grouting amount, and easily formed complete mud sleeve.
In order to realize foregoing invention object, technical scheme of the present invention is:
A kind of thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline, comprise slurry storing tube, mudjack, Grouting Pipe, valve, be combined in certain sequence the tube coupling of large Cross-Section Rectangular push pipe pipeline, be arranged on pipeline tube coupling wall and connect the injected hole of tube coupling wall, wherein, injected hole on described each pipe joint joint is evenly arranged along same tube coupling ring Zhou Fangxiang, on adjacent tube coupling injected hole staggered arranged in conduit axis direction, that is to say, the position that described injected hole arranges along axis direction on adjacent tube coupling is different, make described injected hole on push pipe pipeline along the axis direction layout that is staggered,
The thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline of the present invention, wherein, injected hole on described each pipe joint joint along central axis to setting position on adjacent tube coupling along in the dotted line of line between the adjacent injected hole of tube coupling ring Zhou Fangxiang, and on adjacent tube coupling between injected hole along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, equate, make the arrangement of described injected hole on push pipe duct wall form quincunx arrangement.
On described adjacent jacking pipe joints injected hole between along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, be the ring width of tube coupling.
The thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline of the present invention, wherein, described injected hole is arranged on jacking pipe joints wall by pre-buried mode.
The present invention has actively useful effect:
1. the thixotropic slurry filling system of a kind of large Cross-Section Rectangular push pipe pipeline disclosed in this invention, has reduced grouting pressure and grouting amount, at pipeline, can form good mud sleeve.The present invention has overcome traditional technology prejudice, by the injected hole of diverse location is set at adjacent tube coupling, described injected hole is staggered on push pipe duct wall, can reduce grouting pressure like this, also can reduce grouting amount, reach with less pressure and less grouting amount and make thixotropic slurry at pipeline, form the object of complete mud sleeve.
2. the thixotropic slurry filling system of a kind of large Cross-Section Rectangular push pipe pipeline disclosed in this invention, on push pipe pipeline, the layout of injected hole forms quincuncial arrangement, if the axial spacing of injected hole and be equal to tube coupling ring width L along the spacing of tube coupling ring Zhou Fangxiang, L represents tube coupling ring width, slip casting diameter is 5/4L, spacing between same injected hole be on L push pipe pipeline injected hole be arranged as arranged in squares time, slip casting diameter is
l, therefore, when injected hole becomes quincuncial arrangement, grouting pressure is little, less to ground disturbance, easily forms complete expense mud sleeve, and can well control bottom sedimentation; In addition, also cause the minimizing of grouting amount, saved cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the thixotropic slurry filling system of the large Cross-Section Rectangular push pipe of the present invention pipeline;
Fig. 2 be in Fig. 1 A to enlarged drawing;
Fig. 3 is the arrangement diagram of prior art push pipe pipeline grouting holes;
Fig. 4 is push pipe pipeline grouting holes arrangement diagram in the present invention;
Fig. 5 is prior art push pipe pipeline slip casting effect schematic diagram;
Fig. 6 is push pipe pipeline slip casting effect schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the thixotropic slurry filling system of the large Cross-Section Rectangular push pipe of the present invention pipeline is done to further detailed description.
In the drawings, pipeline 1, tube coupling 2, injected hole 3, thixotropic slurry 4, slurry storing tube 5, slip casting supervisor 6, mudjack 7, slip casting arm 8, valve 9.
Referring to Fig. 1, Fig. 2, Fig. 4, a kind of thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline, comprise slurry storing tube 5, mudjack 7, slip casting supervisor 6, slip casting arm 8, valve 9, be combined in certain sequence the tube coupling 2 of large Cross-Section Rectangular push pipe pipeline, be arranged on pipeline tube coupling 2 walls and connect the injected hole 3 of tube coupling 2 walls, wherein, injected hole 3 on described each pipe joint joint 2 is evenly arranged along same tube coupling ring Zhou Fangxiang, the injected hole 3 of adjacent tube coupling 2 is staggered arranged in conduit axis direction, that is to say, the position that described injected hole 3 arranges along axis direction on adjacent tube coupling 2 is different, make described injected hole 3 on push pipe pipeline 1 along the axis direction layout that is staggered,
Injected hole 3 on described each pipe joint joint 2 along central axis to setting position on adjacent tube coupling 2 along in the dotted line of line between the adjacent injected hole 3 of tube coupling ring Zhou Fangxiang, and on adjacent jacking pipe joints 2 injected hole 3 between along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, equate, make the arrangement of described injected hole 3 on push pipe duct wall form quincunx arrangement.
The thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline of the present invention, wherein, on described adjacent jacking pipe joints 2 injected hole 3 between along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, be the ring width of tube coupling.
Described injected hole 3 is arranged on jacking pipe joints 2 walls by pre-buried mode.
The method of injecting thixotropic slurry is on tube coupling work progress built-in slip casting pipe road, then in jacking construction process, according to actual conditions, injects thixotropic slurry.The thixotropic slurry injecting spreads to surrounding centered by the center of circle of injected hole, and the diameter of diffusion is main relevant to grouting pressure with grouting amount, and pressure greatly spreads that radius is large, and grouting amount is large, and the little diffusion diameter of grouting pressure is little, and grouting amount is little.
As shown in Figure 3, the injected hole being arranged on push pipe duct wall in thixotropic slurry filling system all adopts square to arrange at present, the setting position that is the injected hole on adjacent jacking pipe joints is identical, between injected hole along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, be the ring width of tube coupling.As shown in Figure 5, adopt this kind of mode to carry out slip casting, the slip casting diameter of thixotropic slurry 4 is
l(L is tube coupling ring width), the pressure needing in slip casting process is large, and the thixotropic slurry 4 between adjacent holes has larger combination, so not only larger to bottom disturbance, and grouting amount is also large simultaneously, not only causes bottom sedimentation wayward, and also causes economically waste.As shown in Figure 6, when the injected hole on push pipe pipeline becomes quincuncial arrangement, the slip casting diameter of thixotropic slurry 4 is reduced to 5/4L, the pressure needing in slip casting process is little, thixotropic slurry 4 bonding surfaces between adjacent holes are little, so not only less to bottom disturbance, and grouting amount has reduced simultaneously, bottom sedimentation is easily controlled, and also saved cost economically.
Claims (4)
1. the thixotropic slurry filling system of a large Cross-Section Rectangular push pipe pipeline, comprise slurry storing tube, mudjack, Grouting Pipe, valve, be combined in certain sequence large Cross-Section Rectangular push pipe pipeline tube coupling, be arranged on tube coupling wall and connect the injected hole of tube coupling wall, it is characterized in that: the injected hole on described each pipe joint joint is evenly arranged along same tube coupling ring Zhou Fangxiang, on adjacent tube coupling injected hole staggered arranged in conduit axis direction.
2. the thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline as claimed in claim 1, it is characterized in that: the injected hole on described each pipe joint joint along central axis to setting position on adjacent tube coupling along in the dotted line of line between the adjacent injected hole of tube coupling ring Zhou Fangxiang, and on adjacent tube coupling between injected hole along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, equate.
3. the thixotropic slurry filling system of large Cross-Section Rectangular push pipe pipeline as claimed in claim 1 or 2, is characterized in that: on described adjacent tube coupling between injected hole along tube coupling central axis to spacing and along the spacing of tube coupling ring Zhou Fangxiang, be the ring width of tube coupling.
4. the thixotropic slurry filling system of the arbitrary large Cross-Section Rectangular push pipe pipeline as described in claim 1,2 or 3, is characterized in that: described injected hole is arranged on jacking pipe joints wall by pre-buried mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410353455.1A CN104110265A (en) | 2014-07-24 | 2014-07-24 | Thixotropic slurry grouting system for large-section rectangular pipe-jacking pipeline |
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| CN201410353455.1A CN104110265A (en) | 2014-07-24 | 2014-07-24 | Thixotropic slurry grouting system for large-section rectangular pipe-jacking pipeline |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404891A (en) * | 2014-12-15 | 2015-03-11 | 重庆交通大学 | Stone arch bridge arch pressure grouting reinforcing method |
| CN105804756A (en) * | 2016-05-16 | 2016-07-27 | 江苏宇隧通隧道装备有限公司 | Disturbance-resistant pipe jacking construction scheme |
| CN106450424A (en) * | 2016-10-24 | 2017-02-22 | 天津新动源科技有限公司 | Polymer composite solid electrolyte and preparation method and application thereof |
| CN108612532A (en) * | 2018-04-26 | 2018-10-02 | 中铁隧道集团二处有限公司 | The anti-drag mud slip casting structure of Rectangular Tunnel section of jurisdiction |
| CN111335919A (en) * | 2020-03-20 | 2020-06-26 | 重庆渝高科技产业(集团)股份有限公司 | Prefabricated pipe joint pushing method |
| CN113586090A (en) * | 2021-08-13 | 2021-11-02 | 郑州亚欧交通职业学院 | Thixotropic slurry replacement device in subway pipe jacking construction |
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| JPS6162589A (en) * | 1984-09-04 | 1986-03-31 | Shimoda Gijutsu Kenkyusho:Kk | Backing grout material |
| CN103061782A (en) * | 2013-01-28 | 2013-04-24 | 中铁隧道勘测设计院有限公司 | Large-section earth pressure balancing rectangular jacking pipe joint of motor vehicle tunnel and method for constructing large-section earth pressure balancing rectangular jacking pipe |
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2014
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Patent Citations (3)
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| JPS6162589A (en) * | 1984-09-04 | 1986-03-31 | Shimoda Gijutsu Kenkyusho:Kk | Backing grout material |
| CN103061782A (en) * | 2013-01-28 | 2013-04-24 | 中铁隧道勘测设计院有限公司 | Large-section earth pressure balancing rectangular jacking pipe joint of motor vehicle tunnel and method for constructing large-section earth pressure balancing rectangular jacking pipe |
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| 徐智华等: "泥浆减阻技术在粉土地层长距离曲线顶管中的应用", 《特种结构》, vol. 26, no. 6, 25 December 2009 (2009-12-25), pages 65 - 68 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404891A (en) * | 2014-12-15 | 2015-03-11 | 重庆交通大学 | Stone arch bridge arch pressure grouting reinforcing method |
| CN104404891B (en) * | 2014-12-15 | 2016-08-24 | 重庆交通大学 | Stone arch bridge bridge arch slip casing by pressure reinforcement means |
| CN105804756A (en) * | 2016-05-16 | 2016-07-27 | 江苏宇隧通隧道装备有限公司 | Disturbance-resistant pipe jacking construction scheme |
| CN106450424A (en) * | 2016-10-24 | 2017-02-22 | 天津新动源科技有限公司 | Polymer composite solid electrolyte and preparation method and application thereof |
| CN108612532A (en) * | 2018-04-26 | 2018-10-02 | 中铁隧道集团二处有限公司 | The anti-drag mud slip casting structure of Rectangular Tunnel section of jurisdiction |
| CN111335919A (en) * | 2020-03-20 | 2020-06-26 | 重庆渝高科技产业(集团)股份有限公司 | Prefabricated pipe joint pushing method |
| CN113586090A (en) * | 2021-08-13 | 2021-11-02 | 郑州亚欧交通职业学院 | Thixotropic slurry replacement device in subway pipe jacking construction |
| CN113586090B (en) * | 2021-08-13 | 2024-03-05 | 郑州亚欧交通职业学院 | Thixotropic slurry replacement device in subway pipe jacking construction |
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