CN108729921A - A kind of inner conical high-pressure water shot streaming shield machine head - Google Patents
A kind of inner conical high-pressure water shot streaming shield machine head Download PDFInfo
- Publication number
- CN108729921A CN108729921A CN201710241290.2A CN201710241290A CN108729921A CN 108729921 A CN108729921 A CN 108729921A CN 201710241290 A CN201710241290 A CN 201710241290A CN 108729921 A CN108729921 A CN 108729921A
- Authority
- CN
- China
- Prior art keywords
- arm
- pressure water
- inner conical
- support arm
- knife rest
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 21
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000004927 clay Substances 0.000 abstract description 4
- 238000005755 formation reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of inner conical high-pressure water shot streaming shield machine heads, including multiple cutters, High Pressure Water Jet Generator, pipeline, multiple line nozzles, reinforcing ring, shield shell, a plurality of knife rest arm, a plurality of support arm, ring flange and the outlet of knife rest arm；Knife rest arm and support arm are radially arranged to inner conical structure and are located in shield shell；Knife rest arm and support arm are equipped with mutually matched guideway, and knife rest arm is made to be slided along support arm；Cutter is on knife rest arm and soil layer is cut in direction of rotation；A plurality of support arm is fixedly mounted on ring flange, and reinforcing ring is cirque structure and is fixedly mounted on a plurality of support arm front end；The outlet of knife rest arm is located in the middle part of ring flange；Knife rest arm constitutes spoke arm with support arm, and line nozzle is located on spoke arm.Cutter and water jet are used alone or in combination jet stream cutting operation by the present invention, are suitble to the driving of the special formations shields such as clay, cutter not easy to wear.
Description
Technical field
The present invention relates to a kind of shield more particularly to a kind of inner conical high-pressure water shot streaming shield machine heads.
Background technology
Existing shield Tool in Cutting soil layer, therefore cutter can be worn, and encountered the property remained clay and be easily adhered in cutterhead
Form mud cake.It is very outstanding cutting scheme compared to shield cutter high-pressure water jet cutting soil layer.And common shield cutter head
It is plane, therefore water spray cannot be used.
Invention content
The purpose of the present invention：A kind of inner conical high-pressure water shot streaming shield machine head is provided, although cutterhead head is tapered,
But Tool in Cutting is only used only, if cutter and water jet are used in mixed way, or jet stream cutting operation is used alone, does not then have
There is cutter problem easy to wear.
To achieve the goals above, the technical scheme is that：
A kind of inner conical high-pressure water shot streaming shield machine head, including it is multiple cutters, High Pressure Water Jet Generator, pipeline, multiple
Line nozzle, reinforcing ring, shield shell, a plurality of knife rest arm, a plurality of support arm, ring flange and the outlet of knife rest arm；The a plurality of knife rest
Arm and a plurality of support arm are radially arranged to inner conical structure respectively, and are co-axially located in the shield shell；The knife
Boom and support arm are equipped with mutually matched guideway, and the knife rest arm is made to be slided along the support arm；Described is more
A cutter is separately mounted on a plurality of knife rest arm, and multiple cutters cut soil layer in direction of rotation；Described is more
Support arm is fixedly mounted on the ring flange, and the ring flange is driven by power plant and rotated, the reinforcing ring
For cirque structure and it is fixedly mounted on the front end of a plurality of support arm；The knife rest arm outlet is located at the flange
The middle part of disk；The knife rest arm constitutes spoke arm with the support arm, and multiple line nozzles are separately positioned on spoke
In arm, and the spout of multiple line nozzles is inwardly arranged, and the High Pressure Water Jet Generator is fixed on described
In inner conical high-pressure water shot streaming shield machine head, the line nozzle passes through the pipeline and the high-pressure water jet
Generator connects.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the inner conical high-pressure water shot streaming shield
There are High Pressure Water Jet Generator, the line nozzle to connect by pipeline and the High Pressure Water Jet Generator in chain-drive section
It connects.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the pipeline is located at the spoke arm
It is internal or external.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the middle part of the ring flange is equipped with described
Center cutter.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the inside of the reinforcing ring is equipped with panel.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the line nozzle and the reinforcing ring
It is arranged in parallel or fore-and-aft tilt is arranged.
A kind of inner conical high-pressure water shot streaming shield machine head, including multiple line nozzles, High Pressure Water Jet Generator, pipe
Road, reinforcing ring, shield shell, a plurality of support arm and ring flange；The a plurality of support arm is radially arranged to inner conical knot respectively
Structure, and be co-axially located in the shield shell, a plurality of support arm is fixedly mounted on the ring flange, the method
Blue disk is driven by power plant and is rotated；The reinforcing ring is cirque structure and is fixedly mounted on a plurality of support arm
Front end, a plurality of support arm constitute spoke arm, and multiple line nozzles are separately positioned on spoke arm, and described is more
The spout of a line nozzle is inwardly arranged, and the High Pressure Water Jet Generator is fixed on the inner conical high-pressure water shot streaming
In shield chain-drive section, the line nozzle is connect by the pipeline with the High Pressure Water Jet Generator.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the line nozzle described in two of which longitudinally inclines
Tiltedly, the line nozzle described in another two towards direction of rotation and is obliquely installed.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the beam on the spoke arm being inwardly arranged
Line nozzle guard block is fixed in front of flow nozzle.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein be equipped with cutter on the spoke arm.
Above-mentioned inner conical high-pressure water shot streaming shield machine head, wherein the inside of the reinforcing ring is equipped with panel.
Cutter and water jet can be used in mixed way by the present invention, or jet stream cutting operation is used alone, and be particularly suitable for clay etc.
The driving of special formation shield, cutter are not allowed easy to wear.
Description of the drawings
Fig. 1 is a kind of main view schematic diagram of the embodiment 1 on inner conical high-pressure water shot streaming shield machine of the invention head.
Fig. 2 is a kind of forward sight schematic diagram of the embodiment 1 on inner conical high-pressure water shot streaming shield machine of the invention head.
Fig. 3 is a kind of main view schematic diagram of the embodiment 2 on inner conical high-pressure water shot streaming shield machine of the invention head.
Fig. 4 is a kind of forward sight schematic diagram of the embodiment 2 on inner conical high-pressure water shot streaming shield machine of the invention head.
Fig. 5 is line nozzle, the line nozzle guard block on a kind of inner conical high-pressure water shot streaming shield machine of the invention head
With the catenation principle figure of support arm.
Specific implementation mode
The embodiment further illustrated the present invention below in conjunction with attached drawing.
Embodiment 1：
It refers to shown in attached drawing 1 and attached drawing 2, a kind of inner conical high-pressure water shot streaming shield machine head, including multiple cutters 1, height
Pressure water jet generator, pipeline, multiple line nozzles 2, reinforcing ring 3, shield shell 4, a plurality of knife rest arm 5, a plurality of support arm 6, flange
Disk 7, center cutter 8, knife rest arm outlet 9 and panel 10；The a plurality of knife rest arm 5 and a plurality of support arm 6 distinguish radially cloth
It is set to inner conical structure, and is co-axially located in the shield shell 4；The knife rest arm 5 and support arm 6, which is equipped with, to cooperate
Guideway, have the guide rail as guideway on the support arm 6, the knife rest arm 5 is equipped with and the support arm 6
The compatible guide-track groove of guide rail, so that the knife rest arm 5 is slided along the support arm 6；Multiple cutters 1 are pacified respectively
On a plurality of knife rest arm 5, multiple cutters 1 cut soil layer in direction of rotation；The a plurality of support arm 6 is solid
On the ring flange 7, the ring flange 7 is driven by power plant and is rotated for Dingan County, and the reinforcing ring 3 is circular ring shape
Structure and the front end for being fixedly mounted on a plurality of support arm 6；The knife rest arm outlet 9 is located at the ring flange 7
Middle part；The knife rest arm 5 constitutes spoke arm with the support arm 6, and multiple line nozzles 2 are separately positioned on spoke
On arm, and to fore-and-aft tilt certain angle, that is, the spout of multiple line nozzles 2 is inwardly arranged, for cutting soil
Layer, the High Pressure Water Jet Generator（It is not drawn into）It is fixed in the inner conical high-pressure water shot streaming shield machine head,
The line nozzle 2 passes through the pipeline（It is not drawn into）It is connect with the High Pressure Water Jet Generator.
Since pipeline is not fixed, High Pressure Water Jet Generator i.e. high-pressure hydraulic pump, accumulator etc., equipment can
To be fixed on rational place inside shield machine as desired.
The pipeline can be inside or outside the spoke arm.
The middle part of the ring flange 7 is equipped with the center cutter 8.
The inside of the reinforcing ring 3 is equipped with panel 10.
The line nozzle 2 can be arranged in parallel with the reinforcing ring 3 or fore-and-aft tilt setting, in this way can be more preferable
Protection reinforcing ring.
Multiple cutters 1 can be the cutter that all existing shields such as scraper use.
When cutting operation, the various fixed forms such as knife rest arm 5 and the screw of support arm 6 are fixed together, and need tool changing frame
When, screw is unclamped, knife rest arm 5 skids off.When normal use, driving device drives ring flange 7 to rotate, and is fixedly connected with ring flange 7
Support arm 6 rotate simultaneously, support arm 6 is rotated with movable knife rack arm 5, and the cutter 1 on knife rest arm 5 rotates synchronously, and support arm 6 goes back band
Dynamic reinforcing ring 3 rotates, to drive the cutter 1 on reinforcing ring 3 and knife rest arm 5 to carry out cutting operation.When tool changing being needed to have 1, first
The knife rest arm 5 of tool changing tool 1 will be needed to be parked in lower section, naturally it is also possible to be parked in horizontal direction, then release knife rest arm 5 and support arm
6 fixation allows knife rest arm 59 to be skidded off the outlet of square tool post arm backward along cutter groove, then replaces cutter 1 at rear portion.On knife rest arm 5
Cutter 1 cuts soil layer, while High Pressure Water Jet Generator sprays highly pressurised liquid through piping from line nozzle 2, also may be used in this way
To cut soil layer.
Embodiment 2：
It refers to shown in attached drawing 3 and attached drawing 4, a kind of inner conical high-pressure water shot streaming shield machine head, including multiple line nozzles
2, High Pressure Water Jet Generator, pipeline, reinforcing ring 3, shield shell 4, nozzle guard block 11, a plurality of support arm 6 and ring flange 7；It is described
A plurality of support arm 6 be radially arranged to inner conical structure respectively, and be co-axially located in the shield shell 4, described is more
Support arm 6 is fixedly mounted on the ring flange 7, and the ring flange 7 is driven by power plant and rotated；The reinforcement
Ring 3 is cirque structure and is fixedly mounted on the front end of a plurality of support arm 6, and a plurality of support arm 6 constitutes spoke
Arm, multiple line nozzles 2 are separately positioned on spoke arm, and the spout of multiple line nozzles is inwardly arranged,
2 fore-and-aft tilt certain angle of line nozzle described in two of which is used for cutting operation, 2 face of line nozzle described in another two
It to direction of rotation, and is tilted a certain angle, for cross cutting soil layer and protects line nozzle 2, the high-pressure water jet
Generator is fixed in the inner conical high-pressure water shot streaming shield machine head, and the line nozzle 2 passes through the pipe
Road is connect with the High Pressure Water Jet Generator.
It refers to shown in attached drawing 5, the front for the line nozzle 2 on the spoke arm being inwardly arranged is fixed with line spray
Mouth protection block 11.
The line nozzle guard block 11 is located on the face of the direction of rotation of the spoke arm, and more than described
The position of line nozzle 2.
The various cutters of existing shield machine can also be installed on the spoke arm.Although tool changing tool in this way does not have
1 convenience of embodiment, but the method that existing plane cutterhead can be used to replace cutter replaces cutter into storehouse of burying, and difference is only flat
Face has changed inclined-plane into.
The equipment such as high-pressure hydraulic pump, accumulator can be used in High Pressure Water Jet Generator, can be fixed on shield machine as desired
Internal rational place.
The pipeline can be inside or outside the spoke arm.
The line nozzle 2 is arranged in parallel with the reinforcing ring 3, can preferably protect reinforcing ring.
This is the shield head mode of simple pure fluidics cutting, replaces or existing plane may be used in repair line nozzle
The method of cutterhead tool changing tool.
When cutting operation, driving device drives ring flange 7 to rotate, and the support arm 6 being fixedly connected with ring flange 7 turns simultaneously
Dynamic, support arm 6 also drives the rotation of reinforcing ring 3, at the same High Pressure Water Jet Generator by highly pressurised liquid through piping from line nozzle
It sprays, soil layer can also be cut in this way.
Embodiment 2 can also be equipped with panel 10 in the inside of reinforcing ring 3.
In the present invention, the bracket of support arm 6 and common shield machine is an effect, and panel 10 is exactly common shield head
Panel in portion's cutterhead advantageously ensures that soil layer is stablized.Support arm 6, panel 10 can have support element to be connect with shield wall, this
Sample has better force structure.
In order to distinguish, present invention spoke arm, reinforcing ring, panel new term, but with common plane shield machine cutter head face
Spoke in plate, former, the functions such as bracket are the same, are exactly only by each section in plane cutter head to centroclinal formation
Inner conical.So the effect risen is also the same.
It the direction of line nozzle 2 can be according to experiment or the better direction of calculating direction.
Shield chain-drive section is primarily referred to as the part for cutting in anterior shield, including cutterhead and driving device and front shell
Deng.
In the present invention, high-pressure water jet is as high pressure jer cutting, although being traditionally known as water, the liquid used
Body is but not necessarily pure water, can be the liquid of various suitable Water Cuttings.Common shield machine also has high-pressure pump and spout, such as mud
(operating) water nozzle, foam jet etc., but it is not intended to cutting soil layer, there is essence different from the present invention.
The other parts of shield machine can use existing various shield devices, such as power plant, propulsion device, spiral transferring
Glassware, articulated mounting, duct piece assembling machine, shield tail etc. can use the prior art, and concrete methods of realizing and use be not in this hair
Within bright, therefore no longer state.
Since shield machine is that extremely complex system and existing important equipment, the present invention essentially consist in cutting way
Shape and cutting tool it is readily replaceable, therefore other parts are not related to excessively, in actual use except shield chain-drive section other
Part can use existing various schemes, such as driving device that can not only use variable-frequency motor formula but also can use hydraulic motor formula,
Opened type that can be earth pressure balanced, half opened type close chest formula or slurry-water balance type, air pressure composite mode etc., in addition to knife
Head divides other that can use existing design.
In addition, the attached drawing principle sketch notch ring etc. in the present invention is not all drawn, it is only principle of specification.
In conclusion cutter and water jet can be used in mixed way by the present invention, or be used alone jet stream cutting operation, it is especially suitable
The driving of the special formations shields such as clay is closed, cutter is not allowed easy to wear.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every utilization
Equivalent structure transformation made by present specification, directly or indirectly with the technology neck for being attached to other Related products
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of inner conical high-pressure water shot streaming shield machine head, it is characterised in that：Occur including multiple cutters, high-pressure water jet
Device, pipeline, multiple line nozzles, reinforcing ring, shield shell, a plurality of knife rest arm, a plurality of support arm, ring flange and the outlet of knife rest arm；Institute
The a plurality of knife rest arm stated and a plurality of support arm are radially arranged to inner conical structure respectively, and are co-axially located at the shield shell
It is interior；The knife rest arm and support arm are equipped with mutually matched guideway, and the knife rest arm is made to be slided along the support arm
It is dynamic；Multiple cutters are separately mounted on a plurality of knife rest arm, and multiple cutters cut soil in direction of rotation
Layer；The a plurality of support arm is fixedly mounted on the ring flange, and the ring flange is driven by power plant and rotated, institute
The reinforcing ring stated is cirque structure and is fixedly mounted on the front end of a plurality of support arm；The knife rest arm outlet is located at
The middle part of the ring flange；The knife rest arm constitutes spoke arm, multiple line nozzles point with the support arm
It is not arranged on spoke arm, and the spout of multiple line nozzles is inwardly arranged, the High Pressure Water Jet Generator is solid
Be scheduled in the inner conical high-pressure water shot streaming shield machine head, the line nozzle by the pipeline with it is described
High Pressure Water Jet Generator connects.
2. inner conical high-pressure water shot streaming shield machine according to claim 1 head, it is characterised in that：The pipeline position
Inside or outside the spoke arm.
3. inner conical high-pressure water shot streaming shield machine according to claim 1 head, it is characterised in that：The ring flange
Middle part be equipped with the center cutter.
4. inner conical high-pressure water shot streaming shield machine according to claim 1 head, it is characterised in that：The reinforcing ring
Inside be equipped with panel.
5. inner conical high-pressure water shot streaming shield machine according to claim 1 head, it is characterised in that：The line spray
Mouth is arranged in parallel with the reinforcing ring or fore-and-aft tilt is arranged.
6. a kind of inner conical high-pressure water shot streaming shield machine head, it is characterised in that：Including multiple line nozzles, high-pressure water jet
Generator, pipeline, reinforcing ring, shield shell, a plurality of support arm and ring flange；The a plurality of support arm is radially arranged to respectively
Inner conical structure, and be co-axially located in the shield shell, a plurality of support arm is fixedly mounted on the ring flange,
The ring flange is driven by power plant and is rotated；The reinforcing ring is cirque structure and is fixedly mounted on described a plurality of
The front end of support arm, a plurality of support arm constitute spoke arm, and multiple line nozzles are separately positioned on spoke arm,
The spout of multiple line nozzles is inwardly arranged, and the High Pressure Water Jet Generator is fixed on the inner conical high pressure
In water-jet type shield chain-drive section, the line nozzle is connected by the pipeline and the High Pressure Water Jet Generator
It connects.
7. inner conical high-pressure water shot streaming shield machine according to claim 6 head, it is characterised in that：Described in two of which
Line nozzle fore-and-aft tilt, the line nozzle described in another two towards direction of rotation and is obliquely installed.
8. inner conical high-pressure water shot streaming shield machine according to claim 6 head, it is characterised in that：The institute being inwardly arranged
It is fixed with line nozzle guard block in front of the line nozzle on spoke arm stated.
9. inner conical high-pressure water shot streaming shield machine according to claim 8 head, it is characterised in that：The spoke arm
On cutter is installed.
10. inner conical high-pressure water shot streaming shield machine according to claim 6 head, it is characterised in that：The reinforcement
The inside of ring is equipped with panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710241290.2A CN108729921A (en) | 2017-04-13 | 2017-04-13 | A kind of inner conical high-pressure water shot streaming shield machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710241290.2A CN108729921A (en) | 2017-04-13 | 2017-04-13 | A kind of inner conical high-pressure water shot streaming shield machine head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108729921A true CN108729921A (en) | 2018-11-02 |
Family
ID=63924033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710241290.2A Pending CN108729921A (en) | 2017-04-13 | 2017-04-13 | A kind of inner conical high-pressure water shot streaming shield machine head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729921A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836116A (en) * | 2019-11-19 | 2020-02-25 | 中铁工程服务有限公司 | Flushing system for preventing mud cake in center area of cutter head of shield tunneling machine |
| CN112483106A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method for deepening and widening water cutting groove by PDC cutting tooth scraper |
| CN112922625A (en) * | 2021-02-07 | 2021-06-08 | 南京工业大学 | Large-scale high-pressure water jet automatic deviation rectifying pipe jacking device and construction method |
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| CN102071942A (en) * | 2010-12-02 | 2011-05-25 | 沈阳重型机械集团有限责任公司 | Processing method for protecting excavation place of shield machine from mudlining |
| CN103244119A (en) * | 2013-05-18 | 2013-08-14 | 大连理工大学 | Distribution method and distribution structure of high-pressure water jet in heading machine cutterhead |
| CN103362516A (en) * | 2013-08-02 | 2013-10-23 | 中铁隧道装备制造有限公司 | Combined type shield tunneling machine |
| CN106522969A (en) * | 2016-12-13 | 2017-03-22 | 周东宁 | Internal conical spoke-type shield machine head capable of easily changing cutter |
-
2017
- 2017-04-13 CN CN201710241290.2A patent/CN108729921A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071942A (en) * | 2010-12-02 | 2011-05-25 | 沈阳重型机械集团有限责任公司 | Processing method for protecting excavation place of shield machine from mudlining |
| CN103244119A (en) * | 2013-05-18 | 2013-08-14 | 大连理工大学 | Distribution method and distribution structure of high-pressure water jet in heading machine cutterhead |
| CN103362516A (en) * | 2013-08-02 | 2013-10-23 | 中铁隧道装备制造有限公司 | Combined type shield tunneling machine |
| CN106522969A (en) * | 2016-12-13 | 2017-03-22 | 周东宁 | Internal conical spoke-type shield machine head capable of easily changing cutter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836116A (en) * | 2019-11-19 | 2020-02-25 | 中铁工程服务有限公司 | Flushing system for preventing mud cake in center area of cutter head of shield tunneling machine |
| CN112483106A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method for deepening and widening water cutting groove by PDC cutting tooth scraper |
| CN112922625A (en) * | 2021-02-07 | 2021-06-08 | 南京工业大学 | Large-scale high-pressure water jet automatic deviation rectifying pipe jacking device and construction method |
| CN112922625B (en) * | 2021-02-07 | 2022-04-15 | 南京工业大学 | Large-scale high-pressure water jet automatic deviation rectifying pipe jacking device and construction method |
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Application publication date: 20181102 |
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