CN109026042B - Propulsion system for shield anti-unbalance-loading automatic distribution - Google Patents
Propulsion system for shield anti-unbalance-loading automatic distribution Download PDFInfo
- Publication number
- CN109026042B CN109026042B CN201811078397.0A CN201811078397A CN109026042B CN 109026042 B CN109026042 B CN 109026042B CN 201811078397 A CN201811078397 A CN 201811078397A CN 109026042 B CN109026042 B CN 109026042B
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- shield
- arc angle
- angle theta
- propulsion system
- 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.)
- Active
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 12
- 230000005641 tunneling Effects 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims description 18
- 239000002689 soil Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 229920001875 Ebonite Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012795 verification 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
- E21D9/08—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
-
- 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 propelling system for shield anti-unbalance-loading automatic distribution, belonging to the technical field of tunnel engineering. The novel shield anti-unbalance-loading propulsion system provided by the invention has the advantages that the arc angle theta and the azimuth angle of the propulsion system are calculated by the hydraulic control system according to data acquired by the pressure sensors distributed outside the shield machine
Thereby controlling the start or stop of the hydraulic cylinder groups which are circularly, equidistantly and continuously arranged in the propulsion system. The control method can adjust the distribution of the hydraulic cylinders in real time, thereby solving the problem of unbalance loading of shield tunneling.
Description
Technical Field
The invention belongs to the technical field of tunnel engineering, and particularly relates to a propelling system for shield anti-unbalance-loading automatic distribution. The controllable propulsion system is applicable to various complex geological conditions.
Background
The shield is a large-scale engineering machine for tunnel excavation, and has the advantages of high construction speed, no influence of weather and ground traffic, one-step rapid forming and the like. In recent years, the subway construction of first and second urban cities in China basically adopts the shield to carry out tunnel construction, and the shield is widely applied to the construction of various urban and engineering tunnels in China.
The shield propulsion system in each subsystem of the shield is a key subsystem of the shield and mainly bears the propulsion task of the whole shield, one end of a propulsion hydraulic cylinder acts on a shield body to overcome the tunneling load of the shield during shield construction, the other end of the propulsion hydraulic cylinder pushes a pipe sheet which is installed at the rear, and the forward tunneling of the whole shield is realized through the reaction force of the pipe sheet. The existing shield propulsion system is formed by uniformly arranging dozens or dozens of hydraulic cylinders at equal intervals, and for preventing the bottom hydraulic cylinders from generating large unbalance loading in the shield tunneling process, the four-partition control shield propulsion system adopted at present adopts a principle that the quantity of the hydraulic cylinders of partitions is more than that of the upper partitions in terms of the quantity distribution of the hydraulic cylinders, so that the lower-region hydraulic cylinders can bear larger pressure, and the stress of the lower-region hydraulic cylinders is uniform.
In the actual construction process of the shield, it is generally difficult to acquire sufficient and accurate mechanical data information of a constructed rock-soil object, and the effect between the shield and a stratum during tunneling has randomness, while the existing four-partition shield propulsion system cannot better solve the unbalance loading phenomenon caused by the shield facing real-time geological conditions, dead weight of a cutter head, deviation correction and direction change due to the fixed quantity of hydraulic cylinders in each partition.
Disclosure of Invention
In view of the technical problems, the invention provides a propelling system for automatic allocation of shield anti-unbalance loading, and aims to solve the unbalance loading phenomenon caused by the shield system facing real-time geological conditions, cutter self-weight and direction change.
The device comprises a cutter head (1), a shield body (2), a circular partition plate (3), a hydraulic cylinder (5), a hydraulic reversing valve (4) and a hydraulic control system, and is characterized in that the cutter head (1) is arranged at the foremost end of the shield body (2) and is a main component for cutting rock soil by a tunneling system, and the rock soil cut by the cutter head (1) during tunneling is output through a screw conveyor (8); the rear end of the shield body (2) is fixedly connected with the circular partition plate (3), a gasket at the left end of the hydraulic cylinder (5) is fixedly connected with the circular partition plate (3) at a pressure-resistant hard rubber block, the hydraulic cylinder (5) is controlled by a hydraulic reversing valve (4) in a telescopic manner, and the hydraulic reversing valve (4) is controlled by a hydraulic control system in a threshold value; the right end of the hydraulic cylinder (5) is supported on the duct piece (7) through the supporting shoe (6), and the whole shield is pushed to tunnel forwards through the reaction force on the duct piece (7); a plurality of hydraulic cylinders (5) are continuously and uniformly arranged on the propulsion system in an annular, equidistant and uniform manner to form a hydraulic cylinder group.
Further, the method is characterized in that the opening of the hydraulic reversing valve is to calculate the camber angle theta and the azimuth angle according to the mechanical parameters of the geological conditions during shield tunneling
Thus, the number and position of the non-working hydraulic cylinders in the continuous arrangement in the propulsion system are determined, wherein the size of the arc angle theta determines the number and the azimuth angle of the non-working hydraulic cylinders
And determining the position of the non-working hydraulic cylinder, wherein the hydraulic cylinder outside the range of the arc angle theta of the propulsion system is in a normal working state.
Further, the device is characterized in that the hydraulic cylinder (5) is controlled by a hydraulic reversing valve (4), and the arc angle theta and the azimuth angle under different geological conditions are obtained through calculation
Thereby controlling the threshold value of the hydraulic directional control valve (4), the arc angle theta and the azimuth angle under different geological conditions
The difference is different, the larger the difference between the hardness and softness of the upper and lower geologies of the shield equipment is, the larger the value of the arc angle theta is; conversely, the smaller the value of the arc angle θ.
Furthermore, the hydraulic reversing valve (4) is characterized in that under the complex geological condition, the hydraulic cylinders (5) in the arc angle theta are controlled not to work according to the shield tunneling geological difference, under the common stratum with soft top and hard bottom, the hydraulic cylinders (5) in the arc angle theta are in a non-working state, the rest hydraulic cylinders are automatically divided into A, B, C, D, E five zones, and the quantity of the hydraulic cylinders in each zone is increased from top to bottom due to the soft top and hard bottom; the purpose of uniform thrust distribution of the propulsion system is achieved through the layout, and therefore unbalance loading is reduced.
According to shield tunneling geomechanical parametersObtaining different external loads of the shield, substituting the external loads into the established mathematical model, and calculating to obtain the arc angle theta and the azimuth angle
And 5 subarea data, the data information is transmitted to the hydraulic control system to control the working state of the hydraulic cylinder, and the stress distribution of the hydraulic cylinder in the tunneling process of the shield can be adjusted in real time, so that the stress of the shield propulsion system is improved, and the characteristics of uniform distribution are realized.
Soildworks is utilized to establish a specific camber angle theta and azimuth angle
The dynamic simulation is carried out on the shield by leading corresponding external loads into the ADAMS, and the verification proves that the novel control method can actually correct the unbalance loads generated in the shield propulsion process in time.
Compared with the prior art, the invention has the beneficial effects that:
the thrust system for automatically distributing the shield anti-unbalance loading improves the thrust transfer characteristic by adopting the hydraulic directional valve to control the hydraulic cylinder, solves the unbalance loading phenomenon caused by the shield system when the loads such as real-time geological conditions, dead weight, direction change and the like are changed, and increases the geological application range of the shield.
Secondly, this system compares with traditional propulsion system, and the shield constructs the system and can deal with different geological conditions in a flexible way tunneling, and the propulsion system pneumatic cylinder thrust among the shield constructs the system more evenly, and the effectual section of jurisdiction of avoiding breaks.
Thirdly, the propulsion system can achieve the purpose of saving energy to the maximum extent by controlling part of the hydraulic cylinders to be non-working in the process of the shield system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic structural view of the present invention during tunneling;
FIG. 4 is a front view of the tunneling process of the present invention;
in the figure: 1-cutter head, 2-shield body, 3-circular partition plate, 4-hydraulic reversing valve, 5-hydraulic cylinder, 6-supporting shoe, 7-segment, 8-screw conveyer, 9-non-working hydraulic cylinder group and 10-working hydraulic cylinder group.
Detailed Description
The technical solution of the present invention is further described below with reference to examples and drawings.
As shown in fig. 1, the shield mainly comprises a cutter head 1, a shield body 2, a circular partition plate 3, a hydraulic control valve 4, a hydraulic cylinder 5, a pressure-resistant hard rubber block on the circular partition plate 3, the hydraulic cylinder 5 is controlled to stretch by a hydraulic reversing valve 4, the pressure-resistant hard rubber block of a liner at the left end of the hydraulic cylinder 5 is fixedly connected with the circular partition plate 3, the right end of the hydraulic cylinder 5 is propped against a segment (7) through a supporting shoe (6), the cutter head 1 cuts rocks and soil and is conveyed out through a screw conveyor 8, and the right end of the hydraulic cylinder 5 is propped against the segment 7 through.
As shown in figure 2, a plurality of hydraulic cylinders are annularly, equidistantly and continuously and uniformly arranged on the system, the hydraulic cylinders in the arc angle theta are in a non-working state, the rest hydraulic jacks are divided into A, B, C, D, E partitions, and the propulsion system independently controls the hydraulic cylinder group of each partition to work.
As shown in figures 2 and 3, the shield machine is arranged under a complex stratum with soft top and hard bottom for tunneling, a hydraulic cylinder group 9 in an arc angle theta is not activated and is in a non-working state, a hydraulic cylinder group 10 outside the arc angle theta is activated and is in a normal working state, the whole propulsion system except the hydraulic cylinder in the arc angle theta does not work, all hydraulic cylinders are divided into 5 zones for working, under the condition of the stratum with soft top and hard bottom, the number of the hydraulic cylinders in each zone is sequentially increased, and under the arrangement of the controllable propulsion system, the phenomenon of unbalance loading generated by geological conditions, shield dead weight and direction changing in the tunneling process can be solved.
As shown in fig. 4, when shield tunneling is performed under different geology, different external loads are applied and substituted into the established mathematical model, and the non-operation of part of hydraulic cylinders is controlled, namely the non-operation hydraulic cylinders are arranged, the range of the non-operation hydraulic cylinder group is represented by an arc angle theta, and the position of the non-operation hydraulic cylinder group is represented by an azimuth angle theta
And (4) showing.
The invention adopts the hydraulic reversing valve to control the propulsion hydraulic cylinder, and the camber angle 0 and the azimuth angle can be obtained through calculation
And 5 partition data are transmitted to the hydraulic control system to control the working state of a hydraulic cylinder of the system. The stress distribution of the hydraulic cylinder of the shield in the tunneling process can be adjusted in real time, so that the stress of the shield propulsion system is improved, the characteristics of uniform distribution are improved, and the adaptability of the shield system to the stratum is improved.
All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (3)
1. A propulsion system for shield anti-unbalance-loading automatic distribution comprises a cutter head (1), a shield body (2), a circular partition plate (3), a hydraulic reversing valve (4), a hydraulic cylinder (5), a pressure sensor and a hydraulic control system, and is characterized in that the cutter head (1) is installed at the foremost end of the shield body (2) and is a main component for a tunneling system to cut rock soil, and the rock soil cut by the cutter head (1) during tunneling is output through a spiral conveyor (8); the rear end of the shield body (2) is fixedly connected with the circular partition plate (3), a left end gasket of the hydraulic cylinder (5) is fixedly connected with the circular partition plate (3) at a pressure-resistant hard rubber block, the hydraulic cylinder (5) is controlled by a hydraulic reversing valve (4) in a telescopic mode, and the hydraulic reversing valve (4) is controlled by a hydraulic control system in a threshold value mode; the pressure sensor collects data, transmits the data to the hydraulic control system, and calculates current geological condition data; the right end of the hydraulic cylinder (5) is supported on the duct piece (7) through the supporting shoe (6), and the whole shield is pushed to tunnel forwards through the reaction force on the duct piece (7); a plurality of hydraulic cylinders (5) are continuously and uniformly arranged on the propulsion system in an annular, equidistant and uniform manner to form a hydraulic cylinder group; the opening of the hydraulic reversing valve is determined by calculating the arc angle theta and the azimuth angle of the geological condition during the current shield tunneling according to the data collected by the pressure sensor and transmitting the data to the hydraulic control system, and the number and the positions of the non-working hydraulic cylinders continuously arranged in the propulsion system are automatically distributed and controlled, wherein the number of the non-working hydraulic cylinders is determined by the arc angle theta, the positions of the non-working hydraulic cylinders are determined by the azimuth angle, and the hydraulic cylinders outside the range of the arc angle theta of the propulsion system are in a normal working state.
2. The propelling system for shield anti-unbalance-loading automatic allocation according to claim 1, characterized in that the hydraulic cylinder (5) is controlled by a hydraulic directional valve (4), data are collected by a pressure sensor and transmitted to a hydraulic control system, and then an arc angle theta and an azimuth angle are calculated to control the threshold value of the hydraulic directional valve (4), the arc angle theta and the azimuth angle under different geological conditions are different, and the larger the difference between the hardness of the upper and lower geology of the shield equipment is, the larger the value of the arc angle theta is; conversely, the smaller the value of the arc angle θ.
3. The propelling system for shield anti-unbalance-loading automatic distribution according to any one of claims 1-2, characterized in that the hydraulic directional control valve (4) controls the hydraulic cylinders (5) in the arc angle theta not to work under the complex geological conditions according to the shield tunneling geological difference, under the common geological conditions of soft upper part and hard lower part, the hydraulic cylinders (5) in the arc angle theta are in the non-working state, the rest hydraulic cylinders are automatically divided into A, B, C, D, E five areas, and the number of the hydraulic cylinders in each area is increased from top to bottom due to the geological soft lower part; the purpose of uniform thrust distribution of the propulsion system is achieved through the layout, and therefore unbalance loading is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811078397.0A CN109026042B (en) | 2018-09-14 | 2018-09-14 | Propulsion system for shield anti-unbalance-loading automatic distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811078397.0A CN109026042B (en) | 2018-09-14 | 2018-09-14 | Propulsion system for shield anti-unbalance-loading automatic distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026042A CN109026042A (en) | 2018-12-18 |
| CN109026042B true CN109026042B (en) | 2020-07-10 |
Family
ID=64622481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811078397.0A Active CN109026042B (en) | 2018-09-14 | 2018-09-14 | Propulsion system for shield anti-unbalance-loading automatic distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026042B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707392B (en) * | 2019-03-13 | 2020-06-02 | 江苏建筑职业技术学院 | Fine adjustment device for tunneling angle of shield tunneling machine |
| CN110130907B (en) * | 2019-05-21 | 2020-10-02 | 湖南科技大学 | Method for measuring unbalanced load of propulsion system |
| CN111810174B (en) * | 2020-07-24 | 2021-11-19 | 上海隧道工程有限公司 | Method for calculating jacking force distribution of shield propulsion system in push-splicing synchronization mode |
| CN112593959B (en) * | 2020-11-18 | 2023-04-07 | 浙大宁波理工学院 | Impedance control-based shield tunneling machine compliance control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004020397U1 (en) * | 2004-10-20 | 2005-05-19 | Hochtief Construction Ag | Arrangement to be used during start-up of forward thrust of tunneling device, comprising pressure ring held by threaded bars |
| CN101285387A (en) * | 2008-05-22 | 2008-10-15 | 清华大学 | Propelling plant for earth pressure balancing shield |
| JP4206054B2 (en) * | 2004-04-14 | 2009-01-07 | 飛島建設株式会社 | Shield drilling assembly simultaneous construction method |
| CN101408107A (en) * | 2008-11-11 | 2009-04-15 | 浙江大学 | Energy-saving type shield propulsion hydraulic system by using zone control |
| CN201288566Y (en) * | 2008-11-11 | 2009-08-12 | 浙江大学 | Energy-saving shield advance hydraulic system employing zone control |
| CN101649743A (en) * | 2009-09-09 | 2010-02-17 | 清华大学 | Adjustable propulsion mechanism for soil pressure balance type shield |
| CN101713292A (en) * | 2009-10-19 | 2010-05-26 | 清华大学 | Full-time propulsion system structure used in earth pressure balanced shield |
| CN104196540A (en) * | 2014-05-04 | 2014-12-10 | 中铁工程装备集团有限公司 | Automatic and random grouping push control system of shield tunneling machine |
| CN108316935A (en) * | 2018-02-02 | 2018-07-24 | 中铁隧道局集团有限公司 | A kind of shield machine attitude adjusting method of complex controll |
-
2018
- 2018-09-14 CN CN201811078397.0A patent/CN109026042B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4206054B2 (en) * | 2004-04-14 | 2009-01-07 | 飛島建設株式会社 | Shield drilling assembly simultaneous construction method |
| DE202004020397U1 (en) * | 2004-10-20 | 2005-05-19 | Hochtief Construction Ag | Arrangement to be used during start-up of forward thrust of tunneling device, comprising pressure ring held by threaded bars |
| CN101285387A (en) * | 2008-05-22 | 2008-10-15 | 清华大学 | Propelling plant for earth pressure balancing shield |
| CN101408107A (en) * | 2008-11-11 | 2009-04-15 | 浙江大学 | Energy-saving type shield propulsion hydraulic system by using zone control |
| CN201288566Y (en) * | 2008-11-11 | 2009-08-12 | 浙江大学 | Energy-saving shield advance hydraulic system employing zone control |
| CN101649743A (en) * | 2009-09-09 | 2010-02-17 | 清华大学 | Adjustable propulsion mechanism for soil pressure balance type shield |
| CN101713292A (en) * | 2009-10-19 | 2010-05-26 | 清华大学 | Full-time propulsion system structure used in earth pressure balanced shield |
| CN104196540A (en) * | 2014-05-04 | 2014-12-10 | 中铁工程装备集团有限公司 | Automatic and random grouping push control system of shield tunneling machine |
| CN108316935A (en) * | 2018-02-02 | 2018-07-24 | 中铁隧道局集团有限公司 | A kind of shield machine attitude adjusting method of complex controll |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026042A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109026041B (en) | Control method of shield propulsion system for resisting unbalance loading | |
| CN109026042B (en) | Propulsion system for shield anti-unbalance-loading automatic distribution | |
| CN110295915B (en) | Combined rock breaking TBM complex stratum tunneling method for realizing three-way force detection | |
| CN104747200B (en) | Construction method with double-deck supporting and the hard rock mole of variable section of jurisdiction diameter | |
| CN109209411A (en) | A kind of controllable propulsion system for earth pressure balanced shield, EPBS | |
| CN109578000B (en) | Geometric progression layout method for shield propulsion system | |
| CN204511445U (en) | With the hard rock mole of double-deck supporting and variable section of jurisdiction diameter | |
| CN203362169U (en) | Attitude adjusting device of miniature shield machine | |
| CN111648779B (en) | Shield head system capable of effectively reducing surrounding rock disturbance | |
| CN104265315A (en) | Novel hard rock tunnel tunneling machine capable of expanding excavation | |
| CN101922294B (en) | Dynamic coordinate control method of full-face large-scale tunneling equipment | |
| WO2016107435A1 (en) | Method operating outside of passageway for optimizing passageway regional stress field | |
| CN103343691A (en) | Posture adjusting device of minitype shield tunneling machine | |
| AU2016259437B2 (en) | Longwall optimization control | |
| CN106869953A (en) | Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS | |
| CN111648780A (en) | Shield machine special-shaped cutter head capable of effectively stabilizing tunneling speed | |
| CN110778319A (en) | Rectangular heading machine and construction method thereof | |
| CN106761787A (en) | The variable spoke type shield cutter in outline excavation face and its construction method | |
| CN108979653A (en) | A kind of no soil cabin auger micro-disturbance construction shield machine and its working method | |
| CN109441480B (en) | Temporary supporting construction method for backward tunnel face of multi-arch tunnel | |
| CN208380577U (en) | The soil body transportation system of large section earth pressure balance box culvert development machine | |
| CN107083964B (en) | Advanced support method for shield tunnel construction of stratum with uneven hardness | |
| CN102748033A (en) | Filling mechanism for ultra-long jacking-pipe resistance-reducing slurry bin | |
| CN109184705B (en) | Method for controlling stratum deformation in shield tunnel complex tunneling environment | |
| CN103340053A (en) | Green fertilization car |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |