EP4558704A1 - Tunnelbohrmaschine - Google Patents
TunnelbohrmaschineInfo
- Publication number
- EP4558704A1 EP4558704A1 EP23808709.2A EP23808709A EP4558704A1 EP 4558704 A1 EP4558704 A1 EP 4558704A1 EP 23808709 A EP23808709 A EP 23808709A EP 4558704 A1 EP4558704 A1 EP 4558704A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing material
- filling
- boring machine
- tunnel boring
- arrangement
- 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.)
- Granted
Links
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
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
Definitions
- the invention relates to a tunnel boring machine with the features of the preamble of claim 1.
- Such a tunnel boring machine is known from WO 2022/001621 A1.
- the previously known tunnel boring machine has a shield tail seal which has a number of sealing elements pointing radially inwards. Filling chambers are formed between the sealing elements.
- a line arrangement is provided which opens into the filling chambers distributed in the circumferential direction.
- a pump arrangement is connected to the line arrangement which is designed to pump sealing material into the filling chambers.
- quantity testing means are provided which are designed to compare a quantity of sealing material actually pumped and a quantity of theoretically pumpable sealing material.
- a system for an automated lubricant supply for a tunnel boring machine which has a stroke counter for determining the amount of lubricant supplied and in which the supply of lubricant is time-controlled.
- the invention is based on the object of providing a tunnel boring machine of the type mentioned above which is characterised by a relatively uniform and quantitatively predefined discharge of sealant per surface area without the need for manual control, even under changing operating conditions.
- a control unit which, taking into account specific input parameters which change at least partially during propulsion and also depending on the operating time, introduces a predetermined amount in the form of a volume or preferably a mass of actually pumped sealing material into the filling chambers, predetermined constant amounts of sealing material can be introduced into the or each filling chamber for a uniform quantity-related discharge per area even under changing operating conditions such as a decreasing pumping efficiency of the pump arrangement or changing propulsion speeds within the framework of typical operating but relatively small fluctuations.
- Fig. 1 shows a schematic side view of an embodiment of a tunnel boring machine with a shield tail seal
- Fig. 2 shows a side view of the area around the shield tail seal according to the embodiment of a tunnel boring machine according to Fig. 1,
- FIG. 3 in a partially torn side view an embodiment of a brush seal for a shield tail seal according to Fig. 2,
- Fig. 4 shows a schematic front view of a number of injection lines of a line arrangement in the embodiment according to Fig. 1,
- Fig. 5 shows a schematic circuit diagram of a line arrangement and an exemplary pump arrangement for supplying the line arrangement with sealing material
- Fig. 6 in a schematic side view of the shield tail seal according to Fig. 2 with visualization of preferred and as far as possible to be realized exemplary filling pressure conditions in the filling chambers
- Fig. 7 shows in a block diagram essential elements of an exemplary control unit for the embodiment according to Fig. 1 and
- Fig. 8 shows a block diagram of a further development of the exemplary control unit according to Fig. 7.
- Fig. 1 shows a schematic side view of an embodiment of a tunnel boring machine 103, which is equipped with a cutting wheel 109 on a side facing a tunnel face 106.
- the cutting wheel 109 can be used to mine geology present at the tunnel face 106 in an advance direction.
- the tunnel boring machine 103 On the rear side facing away from the cutting wheel 109, the tunnel boring machine 103 has a shield tail 112 which, during operation of the tunnel boring machine 103, covers an area of segment rings 115 which are formed from a number of segments 118 joined together.
- a shield tail seal 121 is arranged in the end region of the shield tail 112 facing away from the cutting wheel 109.
- Fig. 2 shows a side view of the area around the shield tail seal 121 according to the embodiment of a tunnel boring machine 103 according to Fig. 1. From Fig. 2 it can be seen that the shield tail seal 121 has a number of sealing elements, for example on the one hand in the form of a mechanically very stable spring plate seal 203 arranged at the end of the shield tail 112 and on the other hand in the form of brush seals 206 which are arranged at a distance from one another on the side of the spring plate seal 203 facing the cutting wheel 109 (not shown in Fig. 2).
- sealing elements such as pure spring plate seals or pure brush seals 206 can also be provided.
- the spring plate seal 203 and the brush seals 206 are connected to the shield tail 112 in an end region and extend away from the cutting wheel 109 at an angle to the radially inward direction, so that when the tunnel boring machine 109 is in operation, they rest against the radially outward-facing sides of the segments 118. Between the spring plate seal 203 and the adjacent brush seal 206 and between A filling chamber 209, 212, 215 is formed in each of the brush seals 206.
- An annular gap 218 is formed between the radially inward-facing side of the shield tail 112 and the radially outward-facing side of the segments 118 enclosed by the shield tail 112, which is typically under atmospheric pressure.
- this volume can be filled with mortar 224 up to the geology 221 using a mortar feed device (not shown in Fig. 2).
- the mortar 224 exerts mortar pressure on the spring plate seal 203 at the end.
- the end spring plate seal 203 in particular is mechanically loaded with the risk that if the spring plate seal 203 fails, mortar 224 can penetrate into the filling chambers 209, 212, 215 or, in the worst case, even into the annular gap 218, the filling chambers 209, 212, 215 are filled with a sealing material 227 of relatively high viscosity in order to reduce the mortar pressure applied to the spring plate seal 203 up to the end brush seal 206 facing the cutting wheel 109 and to ensure the functionality of the Shield tail seal 121 is reliably maintained.
- a specific quantity, preferably in the form of a specific mass, of sealing material 227 fed into a filling chamber 209, 212, 215 leads to a specific filling pressure in the respective filling chamber 209, 212, 215.
- a residual layer 230 of sealing material 227 remains on the radially outward-facing side of the respective segments 118, the surface-specific mass of which depends on various parameters such as in particular the differential pressure between the outer filling chamber 209 at the front in the direction of advance and the mortar pressure, the stiffness of the spring plate seal 203, the surface quality of the segments 118 and the dimensions of joints formed between segments 118.
- Fig. 3 shows a partially cutaway side view of an embodiment of a brush seal 206 for a shield tail seal 121 according to Fig. 2.
- the brush seal 206 in the embodiment shown in Fig. 3 has a rear-mounted Outer sheet arrangement 303 and an inner sheet arrangement 306 opposite the outer sheet arrangement 303, each with a number of individual sheets.
- the outer sheet arrangement 303 is longer than the inner sheet arrangement 306.
- the outer sheet arrangement 303, the inner sheet arrangement 306 and the interposed wire layer 309 are connected by means of a fastening clamp 312 and a screw connection 315 to a carrier sheet 318 which can be connected to the shield tail casing 112.
- Fig. 4 shows a schematic front view of a line arrangement 403 which is designed to supply sealing material 227 into the filling chambers 209, 212, 215.
- the line arrangement 403 has a number of first injection lines 406, second Injection lines 409 and third injection lines 412, which are designed to feed sealing material 227 into the first filling chamber 209, the second filling chamber 212 and the third filling chamber 215, respectively.
- the injection lines 406, 409, 412 are preferably arranged at equal distances in the circumferential direction in order to bring about an evenly distributed introduction of sealing material 227 into the respective filling chamber 409, 412, 415 in the circumferential direction.
- Fig. 5 shows a schematic circuit diagram of a region of the line arrangement 403 according to Fig. 4 and a pump arrangement 503 for feeding the line arrangement 403 with sealing material 227. From Fig. 5 it can be seen that the line arrangement 403 has a ring line 506 which is connected to the pump arrangement 503 via a feed line 509 for supplying sealing material 227. The ring line 506 can be emptied if necessary via a ring drain line 512 with integrated ring drain tap 515. Injection lines 406, 409, 412, only partially shown in Fig.
- sealing material 227 is fed into the respective filling chamber 209, 212, 215 via the injection lines 406, 409, 412. fed in, whereby different masses of sealing material 227 supplied in each case advantageously also lead to different filling pressures in the filling chambers 209, 212, 215, at least in pairs.
- the pump arrangement 503 shown schematically and purely as an example in Fig. 5 can be supplied with sealing material 227 from a sealant reservoir 525.
- the mass of sealing material 227 present in the sealant reservoir 525 can be detected with an electrically operated fill level sensor 527 as a component of quantity control devices.
- the pump arrangement 503 can be filled with pressure using a two-column ram press 530 and a follower plate 533 connected to the sealant reservoir 525 can be pressed onto the sealing material 227.
- the pump arrangement 503 also has a solenoid valve 536, with which the direction of movement of a piston can be controlled on the basis of a predetermined cycle time, explained in more detail below.
- a stroke counter 539 of the pump arrangement 503 is set up as a further component of quantity control means to detect the piston in an end position and to output this position as a count value.
- Fig. 6 shows in a schematic side view corresponding to Fig. 2 the area around the shield tail seal 121 with a pressure diagram 603 for visualizing in particular preferred and, as far as possible, exemplary pressure conditions in the filling chambers 209, 212, 215.
- the pressure diagram 603 the location Z in the longitudinal extension of the segment 118 is plotted on the abscissa 606 and the pressure P is plotted on the ordinate 609.
- the filling pressure P3 is successively reduced in the second filling chamber 212 and the first filling chamber 209, which are located in front of the third filling chamber 215 in the direction of advance, via decreasing filling pressures P2 and Pl, respectively, in order to place only a relatively low overall load on the brush seals 206.
- Fig. 7 shows in a block diagram essential elements of an exemplary control unit 703, which is typically used in a programmable logic controller, a so-called PLC.
- the stroke counter 539 provides the pump strokes of the pump arrangement 503 carried out during a control interval, while the fill level sensor 527 provides the mass of sealing material 227 actually used.
- a desired mass-related sealing material consumption per area can be specified via an operator input 712, in particular via the whereabouts of sealing material 227 of a predetermined density in the remaining layer 230 and joints between segments 118.
- the mass of required sealing material 227 can be determined via a sealing material calculation module 715, taking into account geometric parameters of the segment rings 115 such as in particular their outer circumference and the specific density of the sealing material 227, and can be fed to a stroke rate sensor 718.
- the output value of the stroke counter 539 can be fed into a target sealing material consumption module 721, with which a theoretical consumption of sealing material 227 can be calculated on the basis of the number of pump strokes and previously known ideal pumping properties of the pump arrangement 503, as they are predetermined based on the maximum usable pump volume considered purely on the basis of the dimensions.
- the actually consumed mass of sealing material 227 in values of the level sensor 527 can be fed into an actual sealing material consumption module 724, with which the actual consumption of mass of sealing material 227 can be calculated.
- the output values of the sealing material consumption modules 721, 724 can be fed into a filling level determination module 727, with which a filling level can be determined as a ratio between the actual and the theoretical consumption of mass of sealing material 227.
- the filling level can be fed into the stroke rate sensor 718 as a further input parameter.
- a sealing material application control display 730 is provided which is connected to the actual sealing material consumption module 724 and visually displays the actual consumption of mass of sealing material 227 per area.
- a driving speed module 733 is present, with which the current driving speed of the tunnel boring machine 103 can be fed to a clock timer 736 of the control unit 703 as a further input parameter.
- the clock timer 736 is connected to the stroke rate sensor 718 in order to use the absolute stroke rate determined by the stroke rate sensor 718 to output a predetermined mass of sealing material 227 per area, taking into account the current Propulsion speed to control the solenoid valve 536 for adjusting the pumping power of the pump arrangement 503 for a predetermined mass of total sealing material 227 to be pumped in the form of an output cycle.
- the output value of the stroke rate sensor 718 can also be fed to a displacement sensor 739 of the control unit 703, with which the control valves 518 can be controlled to feed a predetermined mass of sealing material 227 to be pumped into the respective filling chambers 209, 212, 215 by specifying a mass value in each case, taking into account the distance to be covered by the tunnel boring machine 103.
- the control unit 703 is therefore set up to compensate for typical operating fluctuations for a uniform discharge of sealing material 227 in the residual layer 230 by adapting the actual pumping power of the pump arrangement 503 to changing ambient conditions such as different temperatures and/or to typical operating wear by taking into account the filling level and changing propulsion speeds.
- Only the density of the sealing material 227 used in each case must be specified as an input parameter for particularly high accuracy.
- the specified value can be determined, and in particular a value that is as economical as possible in terms of cost and environmental aspects. low value, with only relatively small fluctuations relatively accurately.
- Fig. 8 shows a block diagram of a further development of the exemplary control unit 703 according to Fig. 7 with additional elements, whereby in the block diagrams according to Fig. 7 and Fig. 8 corresponding elements are provided with the same reference numerals and in order to avoid repetition some of them are not explained in more detail below.
- the control unit 703 of the further development according to Fig. 8 has an overwritable fill level memory 803 in which the fill level originating from the fill level determination module 727 from the previous, completed ring construction is stored and the stored value of which can be made available to the stroke counter 718 during the current ring construction.
- the block diagram according to Fig. 8 shows a tunneling distance sensor 806 of the tunnel boring machine 103, which is connected on the one hand to the control valve 518 and on the other hand to the sealing material application control display 730 in order to refer the output of the sealing material application control display 730 to the actual tunneling distance covered and on the other hand to control the control valve 518 depending on the tunneling distance.
- FIG. 8 shows that in the further training a Deviation check module 809 is present, which is connected to the operator input 712 and to the sealing material application control display 730.
- the deviation check module 809 is used to check the deviation of the operator input
- predetermined mass-related sealing material consumption per area can be determined from the actual mass-related sealing material consumption per area from the sealing material application control display 730.
- the output value from the deviation test module 809 can be fed into a deviation threshold value test module 812, with which the advance of the tunnel boring machine 103 can be interrupted via a stop unit 815 if a predetermined threshold value is exceeded, otherwise the further operation of the tunnel boring machine 103 can be released via a release unit 818.
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)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022131213.5A DE102022131213A1 (de) | 2022-11-25 | 2022-11-25 | Tunnelbohrmaschine |
| PCT/EP2023/081654 WO2024110238A1 (de) | 2022-11-25 | 2023-11-13 | Tunnelbohrmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4558704A1 true EP4558704A1 (de) | 2025-05-28 |
| EP4558704B1 EP4558704B1 (de) | 2026-04-22 |
Family
ID=88839832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23808709.2A Active EP4558704B1 (de) | 2022-11-25 | 2023-11-13 | Tunnelbohrmaschine |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4558704B1 (de) |
| JP (1) | JP2026500596A (de) |
| CN (1) | CN120077189A (de) |
| AU (1) | AU2023384885A1 (de) |
| DE (1) | DE102022131213A1 (de) |
| WO (1) | WO2024110238A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764916A (zh) | 2020-07-02 | 2020-10-13 | 中铁十四局集团有限公司 | 盾构机的盾尾的密封系统的密封方法 |
| CN213392162U (zh) | 2020-09-11 | 2021-06-08 | 中交天和机械设备制造有限公司 | 盾构机的盾尾油脂自动注入系统 |
-
2022
- 2022-11-25 DE DE102022131213.5A patent/DE102022131213A1/de active Pending
-
2023
- 2023-11-13 JP JP2025520136A patent/JP2026500596A/ja active Pending
- 2023-11-13 CN CN202380076450.6A patent/CN120077189A/zh active Pending
- 2023-11-13 WO PCT/EP2023/081654 patent/WO2024110238A1/de not_active Ceased
- 2023-11-13 AU AU2023384885A patent/AU2023384885A1/en active Pending
- 2023-11-13 EP EP23808709.2A patent/EP4558704B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2023384885A1 (en) | 2025-04-24 |
| JP2026500596A (ja) | 2026-01-08 |
| CN120077189A (zh) | 2025-05-30 |
| WO2024110238A1 (de) | 2024-05-30 |
| EP4558704B1 (de) | 2026-04-22 |
| DE102022131213A1 (de) | 2024-05-29 |
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