CN110701383A - Damping device is used in construction of sand ground push pipe - Google Patents
Damping device is used in construction of sand ground push pipe Download PDFInfo
- Publication number
- CN110701383A CN110701383A CN201911059524.7A CN201911059524A CN110701383A CN 110701383 A CN110701383 A CN 110701383A CN 201911059524 A CN201911059524 A CN 201911059524A CN 110701383 A CN110701383 A CN 110701383A
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- Prior art keywords
- pipe
- pipe jacking
- jacking
- fixed
- grouting
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- 239000004576 sand Substances 0.000 title claims abstract description 29
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000013016 damping Methods 0.000 title description 5
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract 3
- 238000007569 slipcasting Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 16
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a drag reduction device for sand foundation pipe jacking construction, which comprises a pipe jacking, wherein the front end of the pipe jacking is provided with a pipe jacking machine, the rear end of the pipe jacking is provided with a pipe jacking mechanism, the peripheral surface of the pipe jacking is uniformly provided with a circle of grouting holes, grouting pipe interfaces are preset in the grouting holes, one end of each grouting pipe is connected with the corresponding grouting pipe interface, the other end of each grouting pipe penetrates through the inside of the pipe jacking and is communicated with a grouting pump, the peripheral surface of the pipe jacking is provided with a circle of flow deflector which is positioned outside the corresponding grouting hole and covers the corresponding grouting hole, one side of each flow deflector, which is close to the pipe jacking machine, is fixed with the pipe jacking pipe, and the. The invention has simple structure and low cost, and can effectively and uniformly distribute antifriction slurry in the pipe jacking construction of the sand foundation and form a slurry lubricating layer between the pipe jacking and the soil body, thereby ensuring the normal operation of the pipe jacking construction.
Description
Technical Field
The invention relates to the technical field of pipe jacking construction, in particular to a damping device for sand foundation pipe jacking construction.
Background
The pipe-jacking construction method is a pipe laying technology similar to a shield method for underground engineering non-excavation, and adopts a pipe-jacking tunneling machine to form holes, and a prefabricated and formed pipeline is jacked from a jacking working well to form a continuous lining structure. When pipe jacking is used for pipe jacking, in order to reduce the frictional resistance between the pipeline and the soil body, a slurry material is generally injected between the pipeline and the soil body to reduce the friction between the pipeline and the soil body, and the slurry material is called as friction reducing slurry.
After the antifriction mud is injected into the outer gap of the pipeline, the antifriction mud is uniformly distributed to form a circle of mud layer, so that the pipeline and the soil body are not in direct contact, and the friction force between the pipeline and the soil body is greatly reduced by utilizing the lubrication effect of the mud layer formed by the antifriction mud. After the friction force is reduced, on one hand, the back jacking force is reduced when the pipe joint is jacked into operation, on the other hand, the friction tangential force of the pipeline, which is borne by the soil body, is reduced, the damage of the supporting soil body is reduced, the stratum loss is reduced, and the ground settlement is effectively controlled.
However, in the pipe jacking construction process for the sandy soil foundation, because the pores among the sandy soil particles are large, the antifriction slurry is easy to diffuse into the sandy soil foundation, and an antifriction layer with a protection effect cannot be effectively formed on the inner wall of a drilled hole, so that the normal operation of the pipe jacking construction is seriously influenced, and the difficulty in the pipe jacking construction is very easily caused.
Therefore, it is necessary to develop a damping device for pipe jacking construction of sand foundation.
Disclosure of Invention
The invention aims to provide a damping device for sand foundation pipe jacking construction, which has a simple structure and extremely low cost, and can effectively and uniformly distribute antifriction slurry in the sand foundation pipe jacking construction to form a slurry lubricating layer between a pipeline and a soil body, thereby ensuring the normal operation of pipe jacking construction.
In order to realize the scheme, the technical scheme of the invention is as follows:
the utility model provides a drag reduction device is used in construction of sand ground push pipe, includes the push pipe, the push pipe front end is equipped with the push pipe machine, and the rear end is equipped with push pipe mechanism, the push pipe is global to have evenly seted up the round slip casting hole, slip casting pipe interface has been preset in the slip casting hole, slip casting pipe one end is connected slip casting pipe interface, and the other end passes the inside intercommunication grouting pump of push pipe, the push pipe is global to be equipped with the round and to be located the water conservancy diversion piece in slip casting hole outside cover slip casting hole, the water conservancy diversion piece be close to push pipe machine one side with the push pipe is fixed, and the opposite side outwards slopes and forms the acute angle with the push pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the circle of grouting holes are formed outside the jacking pipe, the flow deflector for covering the grouting holes is arranged outside the jacking pipe, one side of the flow deflector is fixed with the jacking pipe, the other side of the flow deflector inclines outwards, and the antifriction slurry sprayed out of the grouting holes flows along the wall of the jacking pipe under the flow guiding action of the flow deflector to cover the gap between the jacking pipe and a sand layer, so that an effective antifriction slurry layer is formed, the antifriction slurry is prevented from immersing into the sand layer, and the normal operation of the jacking pipe construction is effectively ensured;
2. the invention has very simple structure, can solve the problem of sand layer resistance reduction only by fixing the flow deflector outside the jacking pipe, has very ingenious design and very low cost, can quickly reform the existing pipeline and has strong universality.
The invention further improves the scheme as follows:
furthermore, a supporting block is arranged between the flow deflector and the top pipe.
Through adopting above-mentioned scheme, the supporting shoe is used for supporting the water conservancy diversion piece, avoids the water conservancy diversion piece to be collapsed by the soil layer pressure, guarantees that antifriction mud normally flows out.
Furthermore, the supporting blocks are uniformly fixed on the circumferential surface of the top pipe in a circle, and a slurry channel is arranged between the supporting blocks.
By adopting the scheme, the supporting blocks which are uniformly distributed in a circle prevent the flow deflector from partially collapsing and blocking the friction-reducing mud channel, and the friction-reducing mud is discharged from the mud channel between the supporting blocks after being sprayed out from the grouting hole.
Further, the guide vane includes canned paragraph and slope section, the canned paragraph is cylindricly, and the canned paragraph cover is established it is fixed with the push pipe on the push pipe, the slope section is round platform form and outwards slopes.
Furthermore, the jacking pipe is a steel pipe, the flow deflector is a metal sheet, and the fixed section is welded and fixed with the steel pipe.
Furthermore, the jacking pipe is a reinforced concrete pipeline, a welding part is embedded in the jacking pipe, the flow deflector is a metal sheet, and the fixed section is welded and fixed with the welding part.
Further, the thickness of the guide vane is 0.5-1 cm.
By adopting the scheme, the flow deflector is a metal sheet with the thickness of 0.5cm to 1cm, so that the friction between the flow deflector and the sandy soil layer is reduced, and the resistance of the flow deflector in the sliding process is reduced.
Furthermore, the length of the inclined section is 1-1.5cm, and an angle of 10-20 degrees is formed between the inclined section and the top pipe.
Through adopting above-mentioned scheme, with the length control of slope section at 1 to 1.5cm, avoid the slope section influence intensity of overlength, avoid the water conservancy diversion piece tip to interfere with the sand layer simultaneously, with inclination control at 10 to 20 degrees, when guaranteeing antifriction mud layer thickness, avoid the water conservancy diversion piece in the motion to interfere the distortion with the sand layer.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic sectional view of the plane a-a in fig. 1.
Shown in the figure:
1. jacking pipes; 101. grouting holes; 102. a grouting pipe; 103. grouting pump;
2. a pipe jacking machine;
3. a pipe pushing mechanism;
4. a flow deflector; 401. a fixed section; 402. an inclined section;
5. a support block;
6. a slurry channel.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, the drag reduction device for sand foundation pipe jacking construction provided in this embodiment includes a pipe jacking 1, a pipe jacking machine 2 is disposed at a front end of the pipe jacking 1, a pipe pushing mechanism 3 is disposed at a rear end of the pipe jacking 1, and a jack is adopted for the pipe pushing mechanism 3.
The periphery of the top pipe 1 is uniformly provided with a circle of grouting holes 101, grouting pipe interfaces (not shown in the figure) are preset in the grouting holes 101, one end of each grouting pipe 102 is connected with the corresponding grouting pipe interface, and the other end of each grouting pipe penetrates through the interior of the top pipe 1 and is communicated with a grouting pump 103.
The circumferential surface of the jacking pipe 1 is provided with a circle of flow deflectors 4 which are positioned outside the grouting holes 101 and cover the grouting holes 101, one side of each flow deflector 4, which is close to the jacking pipe machine 2, is fixed with the jacking pipe 1, and the other side of each flow deflector is inclined outwards to form an acute angle with the jacking pipe 1.
A supporting block 5 is arranged between the flow deflector 4 and the top pipe 1. The supporting block 5 is used for supporting the flow deflector 4, so that the flow deflector 4 is prevented from being collapsed by a soil layer, and the normal outflow of the antifriction mud is ensured.
The supporting blocks 5 are uniformly fixed on the circumferential surface of the top pipe 1 in a circle, and a slurry channel 6 is arranged between the supporting blocks 5. Evenly arrange and be the passageway of antifriction mud that the guide vane 4 part of avoiding collapsing of guide shoe 5 of round is discharged by mud passageway 6 between the supporting shoe 5 after the antifriction mud is spout from injected hole 101.
The guide vane 4 is a metal sheet with the thickness of 0.5cm to 1cm, so that the friction between the guide vane 4 and a sand layer is reduced, and the resistance of the guide vane 4 in the sliding process is reduced.
The guide vane 4 comprises a fixed section 401 and an inclined section 402, the fixed section 401 is cylindrical, the fixed section 401 is sleeved on the top pipe 1 and fixed with the top pipe 1, and the inclined section 402 is in a circular truncated cone shape and inclines outwards. The length of the inclined section 402 is 1m, and an angle of 15 degrees is formed between the inclined section 402 and the top pipe 1.
Avoid the inclined section 402 of overlength to influence intensity, avoid the 4 tip of water conservancy diversion piece and sand layer to interfere simultaneously, with inclination control at 15 degrees, when guaranteeing antifriction mud layer thickness, avoid water conservancy diversion piece 4 in the motion to interfere the distortion with the sand layer.
In this embodiment, the top pipe 1 is a steel pipe, and the fixed section 401 is welded and fixed to the steel pipe. The grouting holes 101 are threaded holes, and after the pipe jacking is finished, the grouting pipes 102 are removed, and the threaded holes are sealed by bolts matched with the grouting holes 101.
In the embodiment, a circle of grouting holes 101 are formed outside a jacking pipe 1, a flow deflector 4 covering the grouting holes 101 is arranged outside the jacking pipe 1, one side of the flow deflector 4 is fixed with the jacking pipe 1, the other side of the flow deflector is inclined outwards, antifriction slurry sprayed out of the grouting holes 101 flows along the wall of the jacking pipe 1 under the flow guiding effect of the flow deflector 4 to cover the gap between the jacking pipe 1 and a sand layer, so that an effective antifriction slurry layer is formed, the antifriction slurry is prevented from immersing into the sand layer, and the normal operation of jacking pipe construction is effectively ensured;
this embodiment structure is very simple, only needs can solve sand layer drag reduction problem at push pipe 1 external fixation water conservancy diversion piece 4, and the design is very ingenious, and the cost is very low, can reform transform current push pipe 1 fast and realize, and is with strong points of universality.
Example two:
the embodiment is basically the same as the first embodiment, except that the top pipe 1 of the embodiment is a reinforced concrete pipeline embedded with a welding part, and the fixed section 401 is fixedly sleeved outside the top pipe 1 by welding with the welding part.
The grouting hole 101 of the jacking pipe 1 is a connecting pipe with an internal thread and pre-embedded in a reinforced concrete pipeline, after the jacking is finished, a certain amount of cement mortar is injected into the grouting pipe 102 to reinforce the soil layer around the grouting hole 101, then the grouting hole 101 is sealed through a bolt matched with the grouting hole 101, and finally the inner surface of the grouting hole 101 is sealed by cement, so that leakage is avoided.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. The utility model provides a drag reduction device is used in construction of sand ground push pipe, includes the push pipe, the push pipe front end is equipped with the push pipe machine, and the rear end is equipped with push pipe mechanism, its characterized in that, the push pipe has evenly seted up round slip casting hole all around, the slip casting is downthehole to have preset the slip casting pipe interface, slip casting pipe one end is connected the slip casting pipe interface, the other end passes the inside intercommunication slip casting pump of push pipe, the push pipe all around be equipped with the round and be located the guide vane that the slip casting hole outside covers the slip casting hole, the guide vane is close to push pipe machine one side with the push pipe is fixed, and the opposite side outwards slopes and forms the acute angle with the push pipe.
2. The drag reduction device for sand foundation pipe jacking construction according to claim 1, wherein a support block is further arranged between the flow deflector and the jacking pipe.
3. The drag reduction device for sand foundation pipe jacking construction according to claim 2, wherein the supporting blocks are uniformly fixed on the peripheral surface of the pipe jacking in a circle, and a slurry channel is arranged between the supporting blocks.
4. The drag reduction device for sand foundation pipe jacking construction according to claim 1, wherein the flow deflector comprises a fixed section and an inclined section, the fixed section is cylindrical, the fixed section is sleeved on the pipe jacking and fixed with the pipe jacking, and the inclined section is in a circular truncated cone shape and inclines outwards.
5. The drag reduction device for sand foundation pipe jacking construction according to claim 4, wherein the pipe jacking is a steel pipe, the flow deflector is a metal sheet, and the fixed section is welded and fixed with the pipe jacking.
6. The drag reduction device for sand foundation pipe jacking construction according to claim 4, wherein the pipe jacking is a reinforced concrete pipeline, a welding part is embedded in the pipe jacking, the flow deflectors are metal sheets, and the fixed sections are welded and fixed with the welding part.
7. The drag reduction device for sand foundation pipe jacking construction according to claim 5 or 6, wherein the thickness of the flow deflector is 0.5-1 cm.
8. The drag reduction device for sand foundation pipe jacking construction according to claim 5 or 6, wherein the length of the inclined section is 1-1.5cm, and an angle between the inclined section and the pipe jacking is 10-20 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059524.7A CN110701383A (en) | 2019-11-01 | 2019-11-01 | Damping device is used in construction of sand ground push pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059524.7A CN110701383A (en) | 2019-11-01 | 2019-11-01 | Damping device is used in construction of sand ground push pipe |
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| Publication Number | Publication Date |
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| CN110701383A true CN110701383A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911059524.7A Pending CN110701383A (en) | 2019-11-01 | 2019-11-01 | Damping device is used in construction of sand ground push pipe |
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| CN (1) | CN110701383A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577975A (en) * | 2020-05-25 | 2020-08-25 | 四川石油天然气建设工程有限责任公司 | Tamping equipment for reducing resistance of pipe wall of tamping pipe and tamping construction process thereof |
| CN115435146A (en) * | 2022-09-03 | 2022-12-06 | 郑州楷润市政工程设计有限公司 | Slurry balance steel pipe jacking pipe grouting hole wing ring structure and construction process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537516A (en) * | 2010-12-13 | 2012-07-04 | 上海市基础工程有限公司 | Sandy soil pipe jacking anti-drag mud sleeve forming device |
| RU2015155690A (en) * | 2015-12-25 | 2017-06-27 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | The method of filling the annular space with solutions during the laying of pipelines in casings and tunnels |
| CN208268531U (en) * | 2018-04-28 | 2018-12-21 | 安徽唐兴机械装备有限公司 | A kind of push-bench reaming slip casting type reducing sleeve |
| CN210800233U (en) * | 2019-11-01 | 2020-06-19 | 扬州市勘测设计研究院有限公司 | Damping device is used in construction of sand ground push pipe |
-
2019
- 2019-11-01 CN CN201911059524.7A patent/CN110701383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537516A (en) * | 2010-12-13 | 2012-07-04 | 上海市基础工程有限公司 | Sandy soil pipe jacking anti-drag mud sleeve forming device |
| RU2015155690A (en) * | 2015-12-25 | 2017-06-27 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | The method of filling the annular space with solutions during the laying of pipelines in casings and tunnels |
| CN208268531U (en) * | 2018-04-28 | 2018-12-21 | 安徽唐兴机械装备有限公司 | A kind of push-bench reaming slip casting type reducing sleeve |
| CN210800233U (en) * | 2019-11-01 | 2020-06-19 | 扬州市勘测设计研究院有限公司 | Damping device is used in construction of sand ground push pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577975A (en) * | 2020-05-25 | 2020-08-25 | 四川石油天然气建设工程有限责任公司 | Tamping equipment for reducing resistance of pipe wall of tamping pipe and tamping construction process thereof |
| CN111577975B (en) * | 2020-05-25 | 2021-12-03 | 四川石油天然气建设工程有限责任公司 | Tamping equipment for reducing resistance of pipe wall of tamping pipe and tamping construction process thereof |
| CN115435146A (en) * | 2022-09-03 | 2022-12-06 | 郑州楷润市政工程设计有限公司 | Slurry balance steel pipe jacking pipe grouting hole wing ring structure and construction process |
| CN115435146B (en) * | 2022-09-03 | 2024-07-12 | 郑州楷润市政工程设计有限公司 | Slurry balance steel pipe jacking pipe grouting Kong Yi ring structure and construction process |
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Inventor after: Ye Zhengquan Inventor after: Zhang Song Inventor after: Pan Minghua Inventor after: Sheng Rong Inventor after: Cheng Yang Inventor after: Sun Zhong Inventor after: Yin Lu Inventor after: Jin Yong Inventor after: Wang Jinlong Inventor after: Zhang Lvjun Inventor before: Ye Zhengquan Inventor before: Pan Minghua Inventor before: Cheng Yang Inventor before: Sun Zhong Inventor before: Yin Lu Inventor before: Jin Yong Inventor before: Wang Jinlong Inventor before: Zhang Lvjun Inventor before: Zhang Song |
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