LU101976B1 - Special-shaped bit tool of shield machine capable of stabilizing boring speed - Google Patents
Special-shaped bit tool of shield machine capable of stabilizing boring speed Download PDFInfo
- Publication number
- LU101976B1 LU101976B1 LU101976A LU101976A LU101976B1 LU 101976 B1 LU101976 B1 LU 101976B1 LU 101976 A LU101976 A LU 101976A LU 101976 A LU101976 A LU 101976A LU 101976 B1 LU101976 B1 LU 101976B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- horizontal cutting
- excavation surface
- primary
- cutting surface
- shield machine
- Prior art date
Links
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 11
- 238000009412 basement excavation Methods 0.000 claims abstract description 72
- 238000000034 method Methods 0.000 abstract description 14
- 239000002689 soil Substances 0.000 abstract description 9
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Disclosed is a special-shaped bit tool of a shield machine capable of stabilizing boring speed, including a cutterhead assembly and a hydraulic retractor. The cutterhead assembly includes a primary excavation surface, a horizontal cutting surface and a secondary excavation surface; the secondary excavation surface is movably connected to the horizontal cutting surface, and the primary excavation surface and the secondary excavation surface are not in the same plane, so as to increase the excavation area. During the boring process, according to different geological conditions, the PLC control algorithm is used to drive the hydraulic retractor, and then retractable openings are adjusted to adjust the overall opening rate of the cutterhead assembly; the primary excavation surface is on an outermost side of the cutterhead; according to different geological conditions, known theoretical analysis and numerical simulation are used to analyze different soil layers to confirm the final opening rate parameters. Since the mutual operation of the primary excavation surface, the horizontal cutting surface and the secondary excavation surface is adopted during the boring process in the disclosure, the speed of boring can be effectively stabilized, and the disturbance to the soil can be additionally reduced during the boring process for preventing the surface subsidence.
Description
LU101976 ||
SPECIAL-SHAPED BIT TOOL OF SHIELD MACHINE CAPABLE OF STABILIZING BORING SPEED | FIELD OF THE APPLICATION | The disclosure relates to a special-shaped bit tool of a shield machine, in | particular, to a special-shaped bit tool of a shield machine capable of stabilizing | boring speed. | At present, by improving the utilization of underground space, the ground traffic | congestion and other situations can be effectively alleviated.
During the construction | of underground space, due to the constraints of urban environmental factors such as | the construction site and road traffic, traditional construction methods are difficult L to apply universally.
It was considered that tunnel construction has the | characteristics of high degree of automation, labor saving, fast construction speed, | fast construction speed, one-time tunnel formation, no influence by climate, . controllable ground subsidence during excavation, reducing the impact on ground | structures and not affecting the water surface traffic when excavating underwater and | so on.
Based on the above advantages, the shield machines have been widely used in subway, | railway, highway, municipal, hydropower and other tunnel projects.
However, since the ; cutterhead of an ordinary shield machine will cause greater disturbance to the | surrounding soil during the process of boring, ground subsidence will be caused; in | addition, its lower boring efficiency leads to a longer construction period for the | overall underground project. | Summary | In view of the problems in the prior art, the disclosure provides a special-shaped | bit tool of a shield machine capable of stabilizing boring speed, which may effectively | improve the boring efficiency while reducing disturbance to the soil during boring | process and preventing ground subsidence. |
To this end, a technical solution adopted by the disclosure is: a special-shaped bit tool of 46 machine capable of stabilizing boring speed, including a cutterhead assembly and a hydraulic retractor, the cutterhead assembly includes a primary excavation surface, a horizontal cutting surface and a secondary excavation surface, the primary and secondary excavation surfaces are parallel to each other, the primary and secondary excavation surfaces are all circular, and a circular outer diameter of the secondary excavation surface is smaller than a circular inner diameter of the primary excavation surface; the horizontal cutting surface is disposed between the primary excavation surface and the secondary excavation surface, the horizontal cutting surface is a conical shape with open ends, a large end of the horizontal cutting surface is movably connected to a circular inner wall of the primary | excavation surface, a small end of the horizontal cutting surface is provided with a retractable opening, | and the horizontal cutting surface is movably connected to a circular outer edge of the secondary | excavation surface through the retractable opening; the hydraulic retractor is disposed at a rear portion | of the secondary excavation surface, and the hydraulic retractor is driveably connected to the | retractable opening, so that it may control an opening rate of the retractable opening; the horizontal ! cutting surface is mounted with a plurality of bit tools.
| Further, the bit tool further includes a GIS positioning system, and the GIS positioning system is | disposed inside the shield machine.
| Further, the primary excavation surface accounts for 50% to 70% of a total area of the cutterhead | assembly.
| Further, the plurality of bit tools are inclinedly disposed on the horizontal cutting surface with an | inclined angle of 15° to 30° clockwise.
| Further, the horizontal cutting surface has a depth of 0.8m to 1.1m.
| Compared with the prior art, in the disclosure, with combination of the primary excavation | surface, the horizontal cutting surface, the secondary excavation surface and the hydraulic retractor, : the secondary excavation surface is movably connected to the horizontal cutting surface, and the | primary excavation surface and the secondary excavation surface are not in the same plane, so as to ; increase the excavation area. During the boring process, the GIS positioning system is responsible for collecting real-time stress values and shield real-time directions in the shield tunnel through H6&BRE® streaming media, and feeding them back to a PLC controller, and the PLC controller determines different geological conditions according to the data that are fed back and drives the hydraulic retractor through corresponding algorithms, and further adjusts retractable openings, so as to adjust the overall opening rate of the cutterhead assembly and the shield direction; the primary excavation surface is on an outermost side of the cutterhead; according to different geological conditions, known theoretical analysis and numerical simulation are used to analyze different soil layers to confirm the final opening rate parameters. Since the mutual operation of the primary excavation surface, the horizontal cutting surface and the secondary excavation surface is adopted during the boring process in the disclosure, the speed of boring can be effectively increased, and the disturbance to the soil can be additionally reduced during the boring process for preventing the surface subsidence.
| DESCRIPTION OF DRAWINGS | Fig. 1 is a structural view of the disclosure; | Fig. 2 is a left side view of Fig. 1.
| In figures: I-primary excavation surface, 2-horizontal cutting surface, | 3-secondary excavation surface, 4-hydraulic retractor, 201-retractable opening, | 202-bit tool.
| Detailed deseription | The disclosure will be further elaborated hereafter.
| As shown in Figs. 1 and 2, the disclosure includes a cutterhead assembly and a hydraulic | retractor, | the cutterhead assembly includes a primary excavation surface 1, a horizontal cutting surface 2 | and a secondary excavation surface 3, the primary and secondary excavation surfaces 1 and 3 are | parallel to each other, the primary and secondary excavation surfaces 1 and 3 are all circular, and a | circular outer diameter of the secondary excavation surface 3 is smaller than a circular inner diameter | of the primary excavation surface 1; the horizontal cutting surface 2 is disposed between the primary | excavation surface 1 and the secondary excavation surface 3, the horizontal cutting surface 2 is a conical shape with open ends, a large end of the horizontal cutting surface 2 is movably connectéd 046 circular inner wall of the primary excavation surface 1, a small end of the horizontal cutting surface 2 is provided with a retractable opening 201, and the horizontal cutting surface 2 is movably connected to a circular outer edge of the secondary excavation surface 3 through the retractable opening 201; the hydraulic retractor 4 is disposed at a rear portion of the secondary excavation surface 3, and the hydraulic retractor 4 is driveably connected to the retractable opening 201, so that it may control an opening rate of the retractable opening 201; the horizontal cutting surface 2 is mounted with a plurality of bit tools 202.
Further, the bit tool further includes a GIS positioning system, and the GIS positioning system is disposed inside the shield machine.
Further, the primary excavation surface 1 accounts for 50% to 70% of a total area of the cutterhead assembly. With the arrangement, the excavation efficiency may be maximized by adjusting the opening ratio.
Further, the plurality of bit tools 202 are inclinedly disposed on the horizontal cutting surface 2 with an inclined angle of 15° to 30° clockwise; the horizontal cutting surface 2 has a depth of 0.8m to
1.1m. With the arrangement, the resistance of the cutter blades may be reduced during boring process, so as to reduce the loss of bit tools.
When the disclosure is mounted on the shield machine with the primary excavation surface at the forefront (outermost) of the shield machine, the primary excavation surface 1 touches the soil while the surrounding area being under pressure that is transmitted to the hydraulic retractor 4 through the secondary excavation surface 3 during the excavation process of the shield machine, and PLC controller is used to calculate and determine suitable parameters suitable for geological advancement; then, the opening size of the secondary excavation surface 3 and the horizontal cutting surface 2 is adjusted through the retractable opening 201, so that the horizontal cutting plane 2 is driven by the hydraulic retractor 4 to gradually adjust the size of the opening until the size meets the parameter conditions suitable for the excavation geology. When the opening size of the secondary excavation surface 3 and the horizontal cutting surface 2 is adjusted, the proportion of primary excavation surface 1 to the 4 "NENNEN total area of cutterhead is controlled to 50% to 70% of the total area of cutterHLQLP76 Since the depth of the horizontal cutting surface 2 may be controlled to be within 0. 88 to 1. Im during the boring process, the central body may be retained to ensure the support of the central core soil to the soil body on the top of the shield, reduce the external environment damage to the shield machine, and reduce the resistance on the working propulsion.
During the boring process, the GIS positioning system is responsible for collecting real-time stress values and shield real-time directions in the shield tunnel through mobile streaming media, and feeding them back to a PLC controller, and the PLC controller adjusts the shield opening rate and the forward direction in time according to the feedback data.
The primary excavation surface 1 and the secondary excavation surface 3 always maintain two vertical angles.
Since the horizontal cutting surface 3 is connected to the secondary excavation surface 2 through the retractable opening 201, the excavation area of the horizontal cutting surface 2 is increased as compared with the ordinary cutterhead, so that the boring speed is also greatly improved.
In the subsequent boring process for the disclosure, since the bit tools 202 are inclinedly disposed on the horizontal cutting surface 2 with an inclined angle of 15° to 30° clockwise, which follows the excavation direction, the bit tools 202 are inclined clockwise to follow the direction of advancement during the excavation process, reducing the loss of the bit tools and the propulsion resistance.
The adaptability between the cutterhead and the stratum is improved, which may cope with various geological conditions and accelerate the speed of boring.
Claims (5)
1. A special-shaped bit tool of a shield machine capable of stabilizing boring speed, comprising a cutterhead assembly and a hydraulic retractor, the cutterhead assembly includes a primary excavation surface, a horizontal cutting surface and a secondary excavation surface, the primary and secondary excavation surfaces are parallel to each other, the primary and secondary excavation surfaces are all circular, and a circular outer diameter of the secondary excavation surface is smaller than a circular inner diameter of the primary excavation surface; the horizontal cutting surface is disposed between the primary excavation surface and the secondary excavation surface, the horizontal cutting surface is a conical shape with open ends, a large end of the horizontal cutting surface is movably connected to a circular inner wall of the primary excavation surface, a small end of the horizontal cutting surface is provided with a retractable opening, and the horizontal cutting surface is movably connected to a circular outer edge of the secondary excavation surface through the retractable opening; the hydraulic retractor is disposed at a rear portion of the secondary excavation surface, and the hydraulic retractor is driveably connected to the retractable opening, so that it may control an opening rate of the retractable opening; the horizontal cutting surface is mounted with a plurality of bit tools.
2. The special-shaped bit tool of a shield machine capable of stabilizing boring speed according to claim 1, wherein the bit tool further comprises a GIS positioning system, and the GIS positioning system is disposed inside the shield machine.
3. The special-shaped bit tool of a shield machine capable of stabilizing boring speed according to claim 1, wherein the primary excavation surface accounts for 50% to 70% of a total area of the cutterhead assembly.
4. The special-shaped bit tool of a shield machine capable of stabilizing boring speed according to claim 1, wherein the plurality of bit tools are inclinedly disposed on the horizontal cutting surface with an inclined angle of 15° to 30° clockwise.
5. The special-shaped bit tool of a shield machine capable of stabilizing boring speed according to claim 1, wherein the horizontal cutting surface has a depth of 0.8m to 1.1m.
1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386735.8A CN111365014A (en) | 2020-05-09 | 2020-05-09 | Shield machine special-shaped cutter head capable of effectively improving tunneling efficiency |
| CN202010656374.4A CN111648780A (en) | 2020-05-09 | 2020-07-09 | Shield machine special-shaped cutter head capable of effectively stabilizing tunneling speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU101976B1 true LU101976B1 (en) | 2021-02-10 |
Family
ID=71132153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU101976A LU101976B1 (en) | 2020-05-09 | 2020-08-05 | Special-shaped bit tool of shield machine capable of stabilizing boring speed |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN111365014A (en) |
| AU (1) | AU2020100832A4 (en) |
| LU (1) | LU101976B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365014A (en) * | 2020-05-09 | 2020-07-03 | 徐州工程学院 | Shield machine special-shaped cutter head capable of effectively improving tunneling efficiency |
| CN113027473B (en) * | 2021-04-14 | 2022-01-07 | 中国矿业大学 | Multi-ring annular assembled shield cutter head and working method |
| CN113530561A (en) * | 2021-08-10 | 2021-10-22 | 中铁隧道局集团有限公司 | Shield cutter head system capable of adjusting opening rate in real time and control method thereof |
| CN114060044A (en) * | 2021-10-29 | 2022-02-18 | 五邑大学 | Shield butt joint method and equipment thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2996628B2 (en) * | 1997-04-14 | 2000-01-11 | 川崎重工業株式会社 | Double-row shield machine |
| CN101798928A (en) * | 2009-02-09 | 2010-08-11 | 上海力行工程技术发展有限公司 | Large-diameter earth pressure balance shield machine |
| CN101749027B (en) * | 2010-01-13 | 2012-04-18 | 天津大学 | Multi-adaptive cutter head for shield machine |
| CN104278994A (en) * | 2013-07-01 | 2015-01-14 | 宏润建设集团股份有限公司 | Shield machine cutterhead adaptive to soft soil layer |
| CN105240026A (en) * | 2015-10-20 | 2016-01-13 | 辽宁三三工业有限公司 | Method for active changing of opening ratio of cutter head and cutter head with actively-changeable opening ratio |
| CN105275478A (en) * | 2015-11-05 | 2016-01-27 | 同济大学 | Recessed type shield machine cutter head |
| CN111350515A (en) * | 2020-05-09 | 2020-06-30 | 徐州工程学院 | Shield head structure for effectively controlling surface settlement |
| CN111365014A (en) * | 2020-05-09 | 2020-07-03 | 徐州工程学院 | Shield machine special-shaped cutter head capable of effectively improving tunneling efficiency |
-
2020
- 2020-05-09 CN CN202010386735.8A patent/CN111365014A/en active Pending
- 2020-05-25 AU AU2020100832A patent/AU2020100832A4/en not_active Ceased
- 2020-07-09 CN CN202010656374.4A patent/CN111648780A/en active Pending
- 2020-08-05 LU LU101976A patent/LU101976B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN111365014A (en) | 2020-07-03 |
| CN111648780A (en) | 2020-09-11 |
| AU2020100832A4 (en) | 2020-07-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20210210 |