CN106703821B - Underground tunneling device and tunneling method thereof - Google Patents
Underground tunneling device and tunneling method thereof Download PDFInfo
- Publication number
- CN106703821B CN106703821B CN201710080596.4A CN201710080596A CN106703821B CN 106703821 B CN106703821 B CN 106703821B CN 201710080596 A CN201710080596 A CN 201710080596A CN 106703821 B CN106703821 B CN 106703821B
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- Prior art keywords
- ultrasonic
- head
- ultrasonic vibration
- cutter head
- cutter
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- 230000005641 tunneling Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 36
- 238000009412 basement excavation Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000003756 stirring Methods 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
The invention discloses an underground tunneling device and a tunneling method thereof, wherein the underground tunneling device comprises a shield tunneling machine, the shield tunneling machine comprises a cutter head, and a plurality of groups of cutters are arranged on the cutter head; an ultrasonic vibration rod is fixed inside the shield shell close to the cutter head and comprises an energy converter, an amplitude transformer and an ultrasonic transmitting head, and the ultrasonic transmitting head extends out of the cutter head. The tunneling method comprises the following steps: s1, opening the ultrasonic vibration rod and the auxiliary ultrasonic vibration rod, and transmitting the high-frequency vibration emitted by the vibration rod to the unearthed soil layer through the transmitting head of the vibration rod to loosen the soil layer; s2, rotating the cutter disc, and cutting the soil layer acted by the ultrasonic vibration by the cutter; with the continuous forward propulsion of the cutter head, the process of ultrasonic vibration-cutting is continuously and circularly carried out, and the efficient excavation of the soil body is realized. The invention combines the two processes of ultrasonic crushing and shield excavation, not only can effectively improve the tunneling speed, but also can reduce the abrasion of the cutter head of the shield machine and prolong the service life of the cutter head, thereby reducing the engineering cost.
Description
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to an underground tunneling device.
Background
The shield method is a fully mechanical construction method, belongs to the field of underground excavation methods, and has a history of more than 170 years to date. The shield method is mainly suitable for soft water-containing stratum, the soil in the stratum is mainly clay or sandy soil containing clay grains, and the problem of tool bit abrasion of the shield machine for tunneling construction in the environment is not negligible. Generally, soft soil facing during shield construction is undisturbed soil, and during natural deposition of undisturbed soft soil, soil particles can form aggregates with a certain framework structure, and contact points among the particles can generate cementation under long-term physical and chemical effects, so that the undisturbed soil has structural property and structural strength.
In addition, with the continuous improvement of infrastructure construction in China, more and more subways and tunnels are built by schedules. The time of underground tunneling operation is short, and the task is heavy, so that a method capable of effectively improving the excavating speed is needed to be found, the construction period is shortened as far as possible on the premise of ensuring the engineering quality, and the cost is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a novel comprehensive underground tunneling device and a tunneling method thereof which are formed by combining the traditional shield excavation and ultrasonic vibration, and the device has good feasibility and higher engineering application value.
In order to achieve the purpose, the invention adopts the following technical scheme:
an underground tunneling device comprises a shield tunneling machine, wherein the shield tunneling machine comprises a cutter head, and a plurality of groups of cutters are arranged on the cutter head; an ultrasonic vibrating bar is fixed in the shield shell close to the cutter head; an auxiliary ultrasonic vibrating rod is fixed at the center of the cutter head; the ultrasonic vibration rod and the auxiliary ultrasonic vibration rod comprise energy converters, amplitude-changing rods and ultrasonic transmitting heads, and the ultrasonic transmitting heads stretch out of the cutter head.
Preferably, the length of the ultrasonic transmitting head extending out of the cutter head is equal to the length of the cutter extending out of the cutter head.
Preferably, the cutters are arranged in concentric circles; the protruding positions of the ultrasonic transmitting heads are arranged on the transverse and longitudinal central axes of the cutter head, and the ultrasonic transmitting heads of the ultrasonic vibrating rods are all clamped at the centers of two symmetrical cutters.
Preferably, the cross-sectional area of the ultrasonic emitting head of the auxiliary ultrasonic vibrating rod is 2-3 times that of the ultrasonic emitting head of the ultrasonic vibrating rod.
preferably, the number of the ultrasonic vibration rods is determined according to the diameter of the cutter head and the diameter of the ultrasonic emission head, and the ratio of the distance between the adjacent ultrasonic vibration rods to the diameter of the ultrasonic emission head is 5: 1-7: 1.
Preferably, the number of the cutting knives is twice the number of the ultrasonic vibration rods.
Preferably, the transducer is fitted with a heat dissipation fan.
an underground tunneling method using the underground tunneling device combines ultrasonic vibration and shield excavation, and comprises the following steps:
S1, opening the ultrasonic vibration rod and the auxiliary ultrasonic vibration rod, and transmitting the high-frequency vibration emitted by the vibration rod to the unearthed soil layer through the transmitting head of the vibration rod to loosen the soil layer;
S2, rotating the cutter disc, and cutting the soil layer acted by the ultrasonic vibration by the cutter; with the continuous forward propulsion of the cutter head, the process of ultrasonic vibration-cutting is continuously and circularly carried out, and the efficient excavation of the soil body is realized.
The invention has the beneficial effects that:
1) The invention fully considers the soil condition when the shield machine works, combines the ultrasonic vibration with the shield excavation, and the ultrasonic vibration caused by the ultrasonic vibration head has the characteristics of high frequency and energy gathering, and can effectively break up the gathered soil particles. Meanwhile, in the water-containing soil, the ultrasonic wave can also induce strong cavitation at a liquid-solid interface, and high-speed jet flow and shock wave generated when cavitation bubbles collapse can cause the surface diffusion layer of solid particles to stir, so that the original cementation among soil particles is damaged, the soil becomes softer, and the soil is easier to dig.
In conclusion, the ultrasonic crushing-shield excavating machine organically combines the ultrasonic crushing process and the shield excavating process, not only can effectively improve the excavating speed, but also can reduce the abrasion of the cutter head of the shield machine and prolong the service life of the cutter head, thereby reducing the engineering cost.
2) In the invention, for the ultrasonic device, the ultrasonic transducer, the amplitude transformer and the transmitting head of the ultrasonic device must be strictly designed and adjusted to achieve a good coupling state and normally operate, and the method of directly connecting the ultrasonic transducer, the amplitude transformer and the transmitting head of the ultrasonic device is difficult to achieve the coupling state in consideration of the complexity of the cutter head structure of the shield machine, so that the working efficiency of the ultrasonic device is greatly reduced, and even the ultrasonic device cannot normally work. Therefore, the ultrasonic vibrating rod is selected to be arranged in the shield shell, and the transmitting head adopts the standard patterns (polished rod, diamond and the like) on the market at present, so that the problem of low working efficiency caused by mismatching of a tool bit with a complex structure, an ultrasonic transducer and an amplitude transformer can be effectively solved, and the method is simpler and more feasible.
3) The ultrasonic vibrating spear and the cutter on the cutter head are independent, so that the adverse effect on the cutter head caused by high-frequency vibration of the transmitting head can be effectively avoided; and, still install supplementary ultrasonic vibration stick in the centre of a circle department of blade disc, supplementary ultrasonic vibration stick's ultrasonic emission head's cross sectional dimension is 2 ~ 3 times for the ultrasonic vibration stick ultrasonic emission head cross sectional dimension of pressing from both sides in the middle of two symmetrical cutters, and the two mutually supports in order to guarantee the excavation effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
The notations in the figures have the following meanings:
1-cutter head 2-cutter 3-ultrasonic vibration rod 4-auxiliary ultrasonic vibration rod
Detailed Description
the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
underground tunneling device
The shield machine comprises a shield machine, wherein the shield machine comprises a cutter head 1, and a plurality of groups of uniformly distributed cutters 2 are arranged on the cutter head 1; an ultrasonic vibration rod 3 is fixed inside the shield shell close to the cutter head, the ultrasonic vibration rod 3 comprises an energy transducer, an amplitude transformer and an ultrasonic transmitting head, and the ultrasonic transmitting head extends out of the cutter head 1.
The length of the ultrasonic transmitting head extending out of the cutter head 1 is equivalent to the length of the cutter 2 extending out of the cutter head 1.
The cutters 2 are arranged in concentric circles; the protruding positions of the ultrasonic transmitting heads are arranged on the horizontal and vertical central axes of the cutter head 1, and the ultrasonic transmitting heads of the ultrasonic vibrating rod 3 are all clamped at the centers of the two symmetrical cutters 2. By adopting the design, the two-handle cutter can effectively protect the middle ultrasonic transmitting head in the rotary excavation process of the shield tunneling machine, and the phenomenon that the transmitting head is broken due to large bending moment generated by soil body is avoided. Meanwhile, the ultrasonic wave has a certain action distance when being transmitted to the soil body from the vibration head, and the action of softening the soil body can still be prior to the cutting of the cutter on the soil body, so that the excavation effect can be ensured.
An auxiliary ultrasonic vibration rod 4 is also arranged at the center of the circle 1 of the cutter head; the size of the cross section of the ultrasonic transmitting head of the auxiliary ultrasonic vibrating rod 4 is 2-3 times that of the cross section of the ultrasonic transmitting head of the ultrasonic vibrating rod 3; so that the ultrasonic vibration rod 3 and the auxiliary ultrasonic vibration rod 4 are mutually matched to ensure the excavation effect.
The number of the ultrasonic vibration rods 3 is determined according to the diameter of the cutter head 1 and the diameter of the ultrasonic emission head, and the ratio of the distance between every two adjacent ultrasonic vibration rods 3 to the diameter of the ultrasonic emission head is ensured to be 5: 1-7: 1; so as to ensure the auxiliary excavation effect of the ultrasonic vibrating spear.
The ultrasonic device can generate heat when working in contact with soil, and the heat dissipation fan is arranged on the transducer part to ensure the stable operation of the device.
Underground tunneling method using underground tunneling device
Ultrasonic vibration and shield excavation are combined, and the method comprises the following steps:
S1, opening the ultrasonic vibration rod 3 and the auxiliary ultrasonic vibration rod 4, and transmitting the high-frequency vibration emitted by the vibration rods to the unearthed soil layer through the transmitting heads of the vibration rods to loosen the soil layer;
s2, rotating the cutter head 1, and cutting the soil layer acted by the ultrasonic vibration by the cutter 2; with the continuous forward propulsion of the cutter head 1, the process of ultrasonic vibration-cutting is continuously and circularly carried out, thereby realizing the high-efficiency excavation of the soil body.
In actual engineering, considering the complex and various soil qualities of underground soil, more detailed geological drilling and test section tests are required before construction, comprehensive consideration is given according to test results, and an ultrasonic vibrating rod with proper frequency and power is selected and an optimal construction scheme is determined.
the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An underground tunneling device is characterized in that: the shield tunneling machine comprises a shield tunneling machine, wherein the shield tunneling machine comprises a cutter head (1), and a plurality of groups of cutters (2) are arranged on the cutter head (1); an ultrasonic vibrating bar (3) is fixed in the shield shell close to the cutter head; an auxiliary ultrasonic vibrating rod (4) is fixed at the center of the cutter head; the ultrasonic vibration rod (3) and the auxiliary ultrasonic vibration rod (4) respectively comprise an energy converter, an amplitude transformer and an ultrasonic transmitting head, and the ultrasonic transmitting head extends out of the cutter head (1);
The cutters (2) are arranged in a concentric circle manner; the convex position of ultrasonic wave emission head of ultrasonic vibration stick (3) sets up on horizontal, two axis lines of indulging of blade disc (1), cutter (2) and ultrasonic vibration stick, supplementary ultrasonic vibration stick (4) homogeneous phase are independent setting just the ultrasonic wave emission head of ultrasonic vibration stick (3) all presss from both sides and establishes two symmetrical cutter (2) center departments.
2. An underground ripping apparatus according to claim 1, wherein: the length of the ultrasonic transmitting head extending out of the cutter head (1) is equivalent to the length of the cutter (2) extending out of the cutter head (1).
3. An underground ripping apparatus according to claim 1, wherein: the cross sectional area of the ultrasonic emitting head of the auxiliary ultrasonic vibrating rod (4) is 2-3 times that of the ultrasonic emitting head of the ultrasonic vibrating rod (3).
4. An underground ripping apparatus according to claim 1, wherein: the ratio of the distance between the adjacent ultrasonic vibrating rods (3) to the diameter of the ultrasonic transmitting head is 5: 1-7: 1.
5. An underground ripping apparatus according to claim 1, wherein: the number of the cutting knives (2) is twice that of the ultrasonic vibration rods (3).
6. An underground ripping apparatus according to claim 1, wherein: the transducer is provided with a heat dissipation fan.
7. an underground boring method using an underground boring apparatus according to any one of claims 1 to 6, wherein the combination of the ultrasonic vibration and the shield excavation comprises the steps of:
S1, opening the ultrasonic vibration rod (3) and the auxiliary ultrasonic vibration rod (4), and transmitting high-frequency vibration emitted by the ultrasonic vibration rod (3) and the auxiliary ultrasonic vibration rod (4) to a soil layer which is not excavated through an ultrasonic transmitting head to loosen the soil layer;
S2, rotating the cutter head (1), and cutting the soil layer acted by the ultrasonic vibration by the cutter (2); with the continuous forward propulsion of the cutter head (1), the process of ultrasonic vibration-cutting is continuously and circularly carried out, and the efficient excavation of the soil body is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710080596.4A CN106703821B (en) | 2017-02-15 | 2017-02-15 | Underground tunneling device and tunneling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710080596.4A CN106703821B (en) | 2017-02-15 | 2017-02-15 | Underground tunneling device and tunneling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106703821A CN106703821A (en) | 2017-05-24 |
| CN106703821B true CN106703821B (en) | 2019-12-13 |
Family
ID=58909235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710080596.4A Expired - Fee Related CN106703821B (en) | 2017-02-15 | 2017-02-15 | Underground tunneling device and tunneling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703821B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825260B (en) * | 2018-06-19 | 2020-04-28 | 长安大学 | TBM cutter head for assisting in breaking rock through vibration impact and arrangement method thereof |
| CN109322673A (en) * | 2018-12-14 | 2019-02-12 | 徐工集团凯宫重工南京股份有限公司 | Anti- mud lining earth pressure balance shield machine cutterhead |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305082A (en) * | 2011-07-23 | 2012-01-04 | 中铁十二局集团第二工程有限公司 | Method for relieving and cutterhead repairing of shield machine in weathering groove |
| CN103114858A (en) * | 2013-01-08 | 2013-05-22 | 中铁隧道集团有限公司 | Ultrasonic real-time monitoring device for shield machine cutter anti-abrasion block thickness abrasion loss |
| CN103982131A (en) * | 2014-05-19 | 2014-08-13 | 中国矿业大学 | Supersonic resonance gadder with frequency modulation function and use method of gadder |
| CN105422114A (en) * | 2016-01-24 | 2016-03-23 | 吉林大学 | TBM (Tunnel Boring Machine) high-efficient rock-crushing cutter head with ultrasonic vibrator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178575A (en) * | 1982-04-14 | 1983-10-19 | Toshiba Corp | Photosemiconductor display device |
| JPS59112667A (en) * | 1982-12-17 | 1984-06-29 | Fujitsu Ltd | Light emitting diode |
| CN102322270B (en) * | 2011-08-30 | 2013-04-10 | 中国铁建重工集团有限公司 | Shield cutter for composite ground |
| CN103334764B (en) * | 2013-07-08 | 2015-01-07 | 大连理工大学 | Method for designing rock breaking cutterhead combined by flexible expanding excavation hobbing cutters and water jets |
-
2017
- 2017-02-15 CN CN201710080596.4A patent/CN106703821B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305082A (en) * | 2011-07-23 | 2012-01-04 | 中铁十二局集团第二工程有限公司 | Method for relieving and cutterhead repairing of shield machine in weathering groove |
| CN103114858A (en) * | 2013-01-08 | 2013-05-22 | 中铁隧道集团有限公司 | Ultrasonic real-time monitoring device for shield machine cutter anti-abrasion block thickness abrasion loss |
| CN103982131A (en) * | 2014-05-19 | 2014-08-13 | 中国矿业大学 | Supersonic resonance gadder with frequency modulation function and use method of gadder |
| CN105422114A (en) * | 2016-01-24 | 2016-03-23 | 吉林大学 | TBM (Tunnel Boring Machine) high-efficient rock-crushing cutter head with ultrasonic vibrator |
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| CN106703821A (en) | 2017-05-24 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhuang Zhongxun Inventor after: Yin Deshun Inventor after: Ren Jiangtao Inventor after: Hu Hao Inventor before: Zhuang Zhongxun Inventor before: Yin Deshun Inventor before: Ren Jiangtao |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |