CN113047852A - Method for correcting shield posture in upper hard and lower soft stratum - Google Patents
Method for correcting shield posture in upper hard and lower soft stratum Download PDFInfo
- Publication number
- CN113047852A CN113047852A CN202110382256.3A CN202110382256A CN113047852A CN 113047852 A CN113047852 A CN 113047852A CN 202110382256 A CN202110382256 A CN 202110382256A CN 113047852 A CN113047852 A CN 113047852A
- Authority
- CN
- China
- Prior art keywords
- shield
- oil cylinders
- ring
- cylinders
- thrust cylinder
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005641 tunneling Effects 0.000 claims abstract description 31
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- E21D9/0621—Shield advancing devices
-
- 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
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
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 method for correcting the posture of a shield in a hard upper soft stratum and a soft lower stratum, which is carried out under the condition that the posture of the shield exceeds-80 to-120 mm and the vertical trend is-5 to-8 mm/m and the correction is finished under the tunneling length of 8 rings to 12 rings, when each ring tunnels, 13, 14, 15, 16, 1, 2 and 3 thrust cylinders are shielded, four reaction brackets are arranged on a shield tail corresponding to the middle part between the 6 and 7 thrust cylinders, the middle part between the 7 and 8 thrust cylinders, the middle part between the 8 and 9 thrust cylinders and the middle part between the 9 and 10 thrust cylinders, a 400t external cylinder is respectively arranged on each of the four reaction brackets, and a boosting tool is respectively additionally arranged between the four external cylinders and a duct piece according to the propulsion stroke of the shield; the shield tunneling speed is 15-20 mm/mi n. The invention has simple operation, low cost, short operation period and obvious effect.
Description
Technical Field
The invention relates to a method for correcting the shield posture in a hard upper soft stratum and a soft lower stratum.
Background
The axial control of the shield machine is an important link in the construction process of the shield tunnel, whether good shield posture can be kept in the propelling process is the key for smoothly assembling the segments and improving the quality of the ring-forming tunnel, and in addition, the ring-forming segments are used as the backseat of the propelling of the shield machine, and the assembling quality plays a vital role in guiding the propelling of the shield machine. The micro raising posture is required to be controlled during shield tunneling construction, the shield tail is controlled on the design axis, namely the shield tail posture is 0, the segments are required to be assembled in a centralized mode, and the posture of the formed tunnel segments is guaranteed to be controlled within +/-50 mm. The method is characterized in that the bottom of a stratum where a shield machine is located is fine sand, the middle upper portion is fine clay, and the ground sand is typical 'hard top and soft bottom' stratum tunneling, due to the fact that underground water of the stratum is rich, the shield machine is tunneled in an EPB-TBM dual mode, a middle shield and a front shield of the shield machine are heavy (about 380t), the shield body of the shield machine is relatively long (10.6m), the center of gravity of the shield body is located in the front of the middle shield (the center of gravity is located at the front end of the geometric length of the shield body), so that the vertical posture or 'head raising' difficulty of the shield machine is reduced in the tunneling process, posture adjustment is not facilitated, the underground water of the stratum is rich, confined water is large in water pressure, the shield tail is easy. For the current shield construction, the following measures are mostly adopted for correcting the shield posture: 1) grouping the propulsion oil cylinders to realize different pressures of all the subareas; 2) the hinge joint is fully utilized; 3) the stroke difference of the propulsion oil cylinder is made up by using a steel plate; 4) adjusting a grouting mode; 5) the mud-restraining effect is used; 6) using a super digging cutter; 7) and adjusting the pressure of the soil bin. For a small shield, the shield posture can be stabilized within the design standard more simply and conveniently by the aid of the measures, but for an ultra-large shield, due to the fact that the dead weight is large and the center of gravity is close to the front, a head knocking phenomenon is prone to occurring in the propelling process, the shield posture is still not improved obviously by the aid of the measures, and accordingly the shield posture cannot meet the design and construction requirements.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for correcting the shield posture in a hard upper soft stratum and a soft lower stratum, which can effectively adjust the shield posture and has the advantages of simple operation, low cost, short operation period and quick response.
The purpose of the invention is realized as follows: a method for rectifying the shield attitude in the upper hard and lower soft stratum, the shield machine adopts EPB-TBM dual-mode tunneling, the articulation form is active articulation; the method comprises the following steps that 1 to 16 propulsion oil cylinders are clockwise arranged along the circumference of the shield tunneling machine, the 16 propulsion oil cylinder is positioned at the top of the shield tunneling machine, and the 8 propulsion oil cylinder is positioned at the bottom of the shield tunneling machine, wherein the 3, 5, 8, 11, 13 and 16 propulsion oil cylinders are respectively composed of two oil cylinders, and the rest propulsion oil cylinders are composed of single oil cylinders; clockwise arranging No. 1 to No. 12 hinged oil cylinders along the circumference of the shield machine, wherein the No. 1 to No. 3 hinged oil cylinders are positioned at the right upper part of the shield machine; no. 4 to No. 6 hinged oil cylinders are positioned at the right lower part of the shield machine, No. 7 to No. 9 hinged oil cylinders are positioned at the left lower part of the shield machine, and No. 10 to No. 12 hinged oil cylinders are positioned at the left upper part of the shield machine; it is characterized in that the preparation method is characterized in that,
the correction method is carried out under the conditions that the shield posture exceeds-80 mm to-120 mm and the vertical trend is-5 to-8 mm/m, and correction is finished under the tunneling length of eight-ring to twelve-ring, when each ring is tunneled, 13, 14, 15, 16, 1, 2 and 3 thrust cylinders are shielded, four counter-force brackets are arranged on a shield tail, the four counter-force brackets correspond to the middle between the 6 thrust cylinder and the 7 thrust cylinder, the middle between the 7 thrust cylinder and the 8 thrust cylinder, the middle between the 8 thrust cylinder and the 9 thrust cylinder and the middle between the 9 thrust cylinder and the 10 thrust cylinder one by one, and 400t external cylinders are respectively arranged on the four counter-force brackets; the pressure of four 400t external oil cylinders is set to be 30-35 MPa; the four 400t external oil cylinders are 15-20 cm in propelling stroke each time, and a boosting tool is additionally arranged between each of the four 400t external oil cylinders and the corresponding pipe piece according to the propelling stroke of the shield; the shield tunneling speed is 15-20 mm/min.
According to the method for correcting the shield posture in the upper hard and lower soft stratum, the length specifications of the boosting tool are four, and the lengths of the boosting tool are respectively 4cm, 10cm, 30cm or 50 cm.
According to the method for correcting the shield posture in the upper hard and lower soft stratum, when the first ring to the fourth ring are tunneled, the propulsion oil cylinders 13, 14, 15, 16, 1, 2 and 3 are stopped; the pressure of the four 400t external oil cylinders is set to be 35MPa, and the propelling stroke of each of the four 400t external oil cylinders is 18 cm; when the fifth ring to the eighth ring or the fifth ring to the tenth ring are tunneled, the propulsion oil cylinders 13, 14, 15, 16, 1, 2 and 3 are stopped; the pressure of the four 400t external oil cylinders is set to be 30MPa, and the propelling stroke of each of the four 400t external oil cylinders is 20 cm.
The method for correcting the shield posture in the upper hard and lower soft stratum has the following characteristics: the shield machine adopts the measures of shielding the upper propelling oil cylinder and adding the external oil cylinder between the lower propelling oil cylinders, thereby increasing the pressure difference between the upper part and the lower part of the shield machine, reducing the downward trend of the head part of the shield machine, effectively adjusting the shield posture, and having simple operation, low cost, short operation period and quick response.
Drawings
FIG. 1 is a plan view of a thrust cylinder of a shield tunneling machine;
FIG. 2 is a plan view of a hinged cylinder of the shield tunneling machine;
FIG. 3 is a plan layout view of a thrust cylinder adopted by the method for correcting the shield posture in the upper hard and lower soft stratum according to the invention;
FIG. 4 is a longitudinal arrangement diagram of thrust cylinders adopted by the method for correcting the shield posture in the upper hard and lower soft stratum.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 and 2, in the method for correcting the shield posture in the hard-top and soft-bottom stratum, the shield machine adopts EPB-TBM dual-mode tunneling, and the hinging mode is active hinging; clockwise arranging No. 1 to No. 16 thrust cylinders T1-T16 along the circumference of the shield machine, wherein the No. 16 thrust cylinder is positioned at the top of the shield machine, and the No. 8 thrust cylinder is positioned at the bottom of the shield machine, wherein the No. 3 thrust cylinder T3, the No. 5 thrust cylinder T5, the No. 8 thrust cylinder T8, the No. 11 thrust cylinder T11, the No. 13 thrust cylinder T13 and the No. 16 thrust cylinder T16 are all formed by two cylinders, and the rest thrust cylinders are formed by a single cylinder; clockwise arranging a hinged oil cylinder J1-J12 from the number 1 to the number 12 along the circumference of the shield machine, wherein the hinged oil cylinder J1 from the number 1, the hinged oil cylinder J2 from the number 2 and the hinged oil cylinder J3 from the number 3 are positioned at the right upper part of the shield machine; no. 4 articulated oil cylinder J4, No. 5 articulated oil cylinder J5 and No. 6 articulated oil cylinder J6 are located at the right lower part of the shield tunneling machine, No. 7 articulated oil cylinder J7, No. 8 articulated oil cylinder J8 and No. 9 articulated oil cylinder J9 are located at the left lower part of the shield tunneling machine, and No. 10 articulated oil cylinder J10 and No. 11 articulated oil cylinder J11-No. 12 articulated oil cylinder J12 are located at the left upper part of the shield tunneling machine.
Referring to fig. 3 and 4, the method for correcting the shield posture in the hard upper and soft lower strata of the invention finishes correcting the posture under the condition that the shield posture exceeds-80 mm to-120 mm and the vertical trend is-5 to-8 mm/m and under the tunneling length of eight-ring to twelve-ring, when each ring tunnels, a No. 13 thrust cylinder T13, a No. 14 thrust cylinder T14, a No. 15 thrust cylinder T15, a No. 16 thrust cylinder T16, a No. 1 thrust cylinder T1, a No. 2 thrust cylinder T2 and a No. 3 thrust cylinder T3 are shielded, four reaction brackets 100 are welded on the shield tail, the middle parts between the four reaction brackets 100 and the No. 6 thrust cylinders T6 and T7, the middle parts between the No. 7 thrust cylinders T7 and the No. 8 thrust cylinder T8, the middle parts between the No. 8 thrust cylinders T8 and T9, and the middle parts between the No. 9 thrust cylinders T9 and T10 are corresponding one by one, and a 400t external oil cylinder 200 is respectively arranged on the four counter-force brackets 100; the pressure of the four external oil cylinders 200 is set to be 30-35 MPa; the four 400t external oil cylinders 200 are 15-20 cm in advance stroke each time, a boosting tool 300 is additionally arranged between the four 400t external oil cylinders 200 and the duct piece according to the advance stroke of the shield and the advance stroke of the external oil cylinders each time, the length specifications of the boosting tool 300 are four, the lengths of the boosting tool are 4cm, 10cm, 30cm or 50cm, and the shield tunneling speed is 15-20 mm/min.
Because the length of each ring of pipe piece assembled by the shield is 1200mm, each ring of the shield machine needs to be pushed forward 1700mm (500 mm of allowance is reserved for inserting a top sealing block), the maximum extension length of a piston rod of a 400t external oil cylinder 200 is 22cm, neutral positions exist between four 400t external oil cylinders 200 and the pipe piece, the neutral positions are filled by four boosting tools 300, and the boosting tool 300 with one of 4cm, 10cm, 30cm or 50cm in length specification or the boosting tools 300 with more than two specifications are selected for filling. After the deviation correction is finished, the four boosting tools 300 and the four 400t external oil cylinders 200 are dismounted, and the shield tunneling machine can recover normal tunneling.
In a best embodiment, the deviation rectification method of the invention is to finish the deviation rectification under the condition that the shield posture exceeds-80 mm to-120 mm and the vertical trend is-5 to-8 mm/m and under the condition of the driving length of nine rings, when the first ring to the fourth ring are driven, a No. 13 thrust cylinder T13, a No. 14 thrust cylinder T14, a No. 15 thrust cylinder T15, a No. 16 thrust cylinder T16, a No. 1 thrust cylinder T1, a No. 2 thrust cylinder T2 and a No. 3 thrust cylinder T3 are shielded, the pressure of four 400T external cylinders 200 is set to be 35MPa, the driving stroke of each time of the four 400T external cylinders 200 is 18cm, the shield driving speed is 15 to 20mm/min, the vertical posture trend is good, and the shield rectification effect is obvious; when each of the fifth ring to the ninth ring is tunneled, continuously shielding a No. 13 thrust cylinder T13, a No. 14 thrust cylinder T14, a No. 15 thrust cylinder T15, a No. 16 thrust cylinder T16, a No. 1 thrust cylinder T1, a No. 2 thrust cylinder T2 and a No. 3 thrust cylinder T3; and setting the pressure of the four 400t external oil cylinders 200 to be 30MPa, setting the propelling strokes of the four 400t external oil cylinders 200 to be 20cm each time, setting the shield tunneling speed to be 15-20 mm/min, adjusting the shield tunneling machine to be in a micro head-up posture, controlling the shield tail on a design axis, then dismounting the four boosting tools 300 and the four 400t external oil cylinders 200, and enabling the shield tunneling machine to recover normal tunneling.
The method for correcting the shield posture in the upper hard and lower soft stratum can be applied to a full-section water-rich sand layer and a soft soil composite stratum, such as an upper silty clay lower lying silty fine sand stratum. The shield machine mainly adopts the measures of shielding the upper propelling oil cylinder and adding the external oil cylinder between the lower propelling oil cylinders, thereby increasing the pressure difference between the upper part and the lower part of the shield machine, reducing the downward trend of the head part of the shield machine and realizing the posture correction of the shield machine.
The length of the correction of the invention needs to be determined according to the correction purpose (meeting the requirements of line adjustment and slope adjustment or the shield deviation control within an allowable range) and the correction effect, the precursor is carried out under the conditions that the shield posture exceeds-80 mm to-120 mm and the vertical trend is-5 to-8 mm/m, and the correction method in the prior art can not effectively control the descending trend of the shield machine, and the correction method in the prior art comprises the following steps: 1) grouping the propulsion oil cylinders to realize different pressures of all the subareas; 2) the hinge joint is fully utilized; 3) the stroke difference of the propulsion oil cylinder is made up by using a steel plate; 4) adjusting a grouting mode; 5) the mud-restraining effect is used; 6) using a super digging cutter; 7) and adjusting the pressure of the soil bin.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A method for rectifying the shield attitude in the upper hard and lower soft stratum, the shield machine adopts EPB-TBM dual-mode tunneling, the articulation form is active articulation; the method comprises the following steps that 1 to 16 propulsion oil cylinders are clockwise arranged along the circumference of the shield tunneling machine, the 16 propulsion oil cylinder is positioned at the top of the shield tunneling machine, and the 8 propulsion oil cylinder is positioned at the bottom of the shield tunneling machine, wherein the 3, 5, 8, 11, 13 and 16 propulsion oil cylinders are respectively composed of two oil cylinders, and the rest propulsion oil cylinders are composed of single oil cylinders; clockwise arranging No. 1 to No. 12 hinged oil cylinders along the circumference of the shield machine, wherein the No. 1 to No. 3 hinged oil cylinders are positioned at the right upper part of the shield machine; no. 4 to No. 6 hinged oil cylinders are positioned at the right lower part of the shield machine, No. 7 to No. 9 hinged oil cylinders are positioned at the left lower part of the shield machine, and No. 10 to No. 12 hinged oil cylinders are positioned at the left upper part of the shield machine; it is characterized in that the preparation method is characterized in that,
the correction method is carried out under the conditions that the shield posture exceeds-80 mm to-120 mm and the vertical trend is-5 to-8 mm/m, and correction is finished under the tunneling length of eight-ring to twelve-ring, when each ring is tunneled, 13, 14, 15, 16, 1, 2 and 3 thrust cylinders are shielded, four counter-force brackets are arranged on a shield tail, the four counter-force brackets correspond to the middle between the 6 thrust cylinder and the 7 thrust cylinder, the middle between the 7 thrust cylinder and the 8 thrust cylinder, the middle between the 8 thrust cylinder and the 9 thrust cylinder and the middle between the 9 thrust cylinder and the 10 thrust cylinder one by one, and 400t external cylinders are respectively arranged on the four counter-force brackets; the pressure of four 400t external oil cylinders is set to be 30-35 MPa; the four 400t external oil cylinders are 15-20 cm in propelling stroke each time, and a boosting tool is additionally arranged between each of the four 400t external oil cylinders and the corresponding pipe piece according to the propelling stroke of the shield; the shield tunneling speed is 15-20 mm/min.
2. The method for correcting the shield posture in the upper hard and lower soft stratum according to claim 1, wherein the boosting tool has four length specifications, namely 4cm, 10cm, 30cm or 50 cm.
3. The method for correcting the shield posture in the upper hard and lower soft stratum according to claim 1, wherein when the first ring to the fourth ring are tunneled, the propulsion oil cylinders No. 13, No. 14, No. 15, No. 16, No. 1, No. 2 and No. 3 are stopped; the pressure of the four 400t external oil cylinders is set to be 35MPa, and the propelling stroke of each of the four 400t external oil cylinders is 18 cm; when the fifth ring to the eighth ring or the fifth ring to the tenth ring are tunneled, the propulsion oil cylinders 13, 14, 15, 16, 1, 2 and 3 are stopped; the pressure of the four 400t external oil cylinders is set to be 30MPa, and the propelling stroke of each of the four 400t external oil cylinders is 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382256.3A CN113047852A (en) | 2021-04-09 | 2021-04-09 | Method for correcting shield posture in upper hard and lower soft stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382256.3A CN113047852A (en) | 2021-04-09 | 2021-04-09 | Method for correcting shield posture in upper hard and lower soft stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113047852A true CN113047852A (en) | 2021-06-29 |
Family
ID=76519467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110382256.3A Withdrawn CN113047852A (en) | 2021-04-09 | 2021-04-09 | Method for correcting shield posture in upper hard and lower soft stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113047852A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017045A (en) * | 1989-03-24 | 1991-05-21 | Sato Kogyo Co., Ltd. | Method and apparatus for controlling attitude of shield excavator |
| CN104695968A (en) * | 2015-02-11 | 2015-06-10 | 河南工程学院 | Method for in-tunnel starting of shield tunneling machine |
| CN108661653A (en) * | 2018-05-22 | 2018-10-16 | 中交二公局第三工程有限公司 | The method realized and quickly rectified a deviation is promoted by the way that manual operation shield machine is actively hinged |
| CN109026041A (en) * | 2018-08-06 | 2018-12-18 | 湖南科技大学 | A kind of shield propelling system control method for anti-bias load |
| CN110578529A (en) * | 2019-09-20 | 2019-12-17 | 上海隧道工程有限公司 | Shield tunneling machine excavation attitude vector self-adaptive adjustment method and system |
| CN111577297A (en) * | 2020-05-25 | 2020-08-25 | 中铁二十三局集团有限公司 | Deviation rectifying method for upward drifting of shield machine posture in upper-soft and lower-hard mudstone composite stratum |
| CN112012754A (en) * | 2020-09-28 | 2020-12-01 | 广东欣龙隧道装备股份有限公司 | Translation and rotation method of shield tunneling machine |
-
2021
- 2021-04-09 CN CN202110382256.3A patent/CN113047852A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017045A (en) * | 1989-03-24 | 1991-05-21 | Sato Kogyo Co., Ltd. | Method and apparatus for controlling attitude of shield excavator |
| CN104695968A (en) * | 2015-02-11 | 2015-06-10 | 河南工程学院 | Method for in-tunnel starting of shield tunneling machine |
| CN108661653A (en) * | 2018-05-22 | 2018-10-16 | 中交二公局第三工程有限公司 | The method realized and quickly rectified a deviation is promoted by the way that manual operation shield machine is actively hinged |
| CN109026041A (en) * | 2018-08-06 | 2018-12-18 | 湖南科技大学 | A kind of shield propelling system control method for anti-bias load |
| CN110578529A (en) * | 2019-09-20 | 2019-12-17 | 上海隧道工程有限公司 | Shield tunneling machine excavation attitude vector self-adaptive adjustment method and system |
| CN111577297A (en) * | 2020-05-25 | 2020-08-25 | 中铁二十三局集团有限公司 | Deviation rectifying method for upward drifting of shield machine posture in upper-soft and lower-hard mudstone composite stratum |
| CN112012754A (en) * | 2020-09-28 | 2020-12-01 | 广东欣龙隧道装备股份有限公司 | Translation and rotation method of shield tunneling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105822312B (en) | The construction method that soil pressure balance shielding structure pressure originates in a kind of Metro Tunnel | |
| CN202441383U (en) | Hybird TBM with multiple driving modes and tunnel support modes | |
| CN108104827B (en) | Variable-diameter normal-pressure cutter changing cutter disc and shield machine using cutter disc | |
| CN201090229Y (en) | Engine-carried type supporting machine | |
| CN102305083A (en) | Shield machine and anterior shield system thereof | |
| CN104033168B (en) | From moving platform-type brill anchor car | |
| CN205805429U (en) | Driving drill carriage concertina type forward beam | |
| CN109372539A (en) | A kind of integral type belt feeder and its adjusting method suitable for double-shielded TBM | |
| CN112554899A (en) | Hard rock tunnel boring machine | |
| CN107620595B (en) | A kind of rock tunnel(ling) machine | |
| CN211648164U (en) | Shield machine | |
| CN106223971B (en) | A kind of development machine and driving method | |
| CN206346740U (en) | A kind of adjustable outer triumphant structure of open type TBM spacing | |
| CN113047852A (en) | Method for correcting shield posture in upper hard and lower soft stratum | |
| CN206839538U (en) | Make the bushing pressure head of heart function by oneself with bushing | |
| CN209892216U (en) | Stepping type body walking device for construction of tunneling machine and tunneling machine | |
| CN205101006U (en) | Tunnel high strength pipe -shed advance support structure | |
| CN209115124U (en) | Rich water sand tomography tunnel per-fore pouring liquid with small pipe constructing structure | |
| CN110344837B (en) | Earth pressure balance shield machine | |
| CN212563326U (en) | Goaf unloading filling device | |
| CN110206555A (en) | A kind of shield driving method | |
| CN203050719U (en) | Tunnel arch springing circumferential high-pressure ejecting and reinforcing construction device | |
| CN209510328U (en) | A kind of extension type fission cutterhead | |
| CN209851314U (en) | Full-automatic tunnel longitudinal cutting equipment | |
| CN221256804U (en) | Internal supporting trolley for mechanical method communication channel construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Applicant after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Applicant after: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Applicant after: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Applicant before: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Applicant before: CCCC Sanya (Xiamen) Engineering Co.,Ltd. Applicant before: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210629 |
|
| WW01 | Invention patent application withdrawn after publication |