EP0146918A1 - Système de forage de tunnel pour l'avancement des tunnels par poussage de tubes - Google Patents

Système de forage de tunnel pour l'avancement des tunnels par poussage de tubes Download PDF

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Publication number
EP0146918A1
EP0146918A1 EP84115807A EP84115807A EP0146918A1 EP 0146918 A1 EP0146918 A1 EP 0146918A1 EP 84115807 A EP84115807 A EP 84115807A EP 84115807 A EP84115807 A EP 84115807A EP 0146918 A1 EP0146918 A1 EP 0146918A1
Authority
EP
European Patent Office
Prior art keywords
tool
bell
hollow shaft
tunnel
section
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
Application number
EP84115807A
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German (de)
English (en)
Other versions
EP0146918B1 (fr
Inventor
Martin Dipl.-Ing. Herrenknecht
Thomas Dipl.-Ing. Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herrenknecht GmbH
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Herrenknecht GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Herrenknecht GmbH filed Critical Herrenknecht GmbH
Priority to AT84115807T priority Critical patent/ATE33057T1/de
Publication of EP0146918A1 publication Critical patent/EP0146918A1/fr
Application granted granted Critical
Publication of EP0146918B1 publication Critical patent/EP0146918B1/fr
Expired legal-status Critical Current

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    • 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
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Definitions

  • the invention relates to a tunnel boring system for opening tunnels by means of pipe compression, in particular for tunnel pipes with an inside diameter that cannot be walked on, with a substantially cylindrical tunnel boring machine that can be pressed into the ground in the direction of its longitudinal central axis and that has one of the pipe sizes of a tunnel pipe to be installed at a drill head end has corresponding mining device and which can be brought into a support connection at a drill tail end with an end face of a tunnel pipe section of the tunnel pipe to be pre-pressed, soil removed from the mining device with the addition of water through the interior of the drilling machine and, when the tunnel pipe section is attached to its visual bug end, also through whose interior is conveyed through.
  • the excavation device has essentially plate-shaped or star-shaped rotary tools at the head of the drilling machine, which rotate concentrically to the tunnel axis on a central shaft rotatably mounted in a machine housing.
  • the rotary tools can be designed as scraping, cutting or scraping tools.
  • Such tools which are attached in the circumferential area of a star-like or disk-like support member that essentially covers the tunnel cross-section, scrape or scrape off the material to be removed, usually with constant water supply, and the material falls through the caliber openings provided in the tool-carrying disc (or through specially dimensioned spoke sections in the case of a star-shaped design) and is then removed from the water together with the flushing water, e.g. via centrifugal pumps and hose lines Tunnel bore carried out.
  • the above-mentioned caliber openings are intended to prevent stones and debris of a grain size from getting into the pipes and pumps which discharge the overburden. through which the discharge devices could be damaged.
  • the material that cannot be removed through the caliber openings collects in the rotation area of the stripping tool and, if it accumulates accordingly, can completely put the removal tool out of operation. But even if, despite the accumulation of non-transportable material in the area of the excavation device, it is still possible to remove the working face, the material jam described generally leads to a considerable reduction in the rate of advance, even with a high pipe pre-pressure.
  • such a known tunnel boring system can only be used to mine soil with a very small proportion of small-grained stones, i.e. that the ground condition of the tunnel driving section must be largely homogeneous. If, for example, unexpectedly large pieces of rock or remains of foundations of buildings lie in the tunnel boring section, the tools used and usable in this known type of tunnel boring machine are not able to penetrate the obstacles. If this is the case, the propulsion is
  • Tunnel boring machines that work with screw conveyors are also used to drill tunnels through soft soils and gravel with a small proportion of coarse-grained rock.
  • a screw conveyor rotates in a drill housing or trough, rubs out the material to be mined with mostly armored blades at the front worm gear and transports it to the rear end using the screw.
  • This extraction by means of screw conveyors is only suitable for dry or moist material and is limited to relatively short tunnel bores, since the drilling length can essentially only correspond to the length of the screw.
  • a tunnel boring machine in which no rotating parts are provided in the mining area, but rather a plurality of pivotable nozzles distributed over the circumferential edge of the tunnel cross section, to which water is supplied so that the nozzle jets can detach the soil. The detached material is removed together with the rinse water.
  • Such drilling system can only be used for soils of a very specific composition made of easily rinsable material, at least not for soils with irregularly large rocks.
  • tunnel boring systems used up to now in the introductory outline have more or less well-developed dismantling tools at the head of the drilling machine and can dig up the tunnel cross-section on site by scraping, cutting off or breaking out of the soil.
  • tunneling generally ends because such obstacles cannot be processed. In such a case, when driving tunnels with accessible inner diameters, the obstacle that cannot be processed by the machine would be crushed on site and the tunneling would then continue. This is obviously not possible with tunnel drilling systems of the type mentioned at the beginning for tunnel pipes of inside diameter which cannot be walked on.
  • the invention is therefore based on the object of providing a tunnel boring system, the tunnel boring machine of which is able to mine all types of soils and earth zone compositions and which also has a device for mining all of the large parts of the earth in the mining area ready for direct removal shred.
  • the removal tool bell according to the invention carries a cutting and grinding tool crown with a diameter approximately corresponding to the tunnel cross section to be drilled in each case. With this crown, the material to be mined is scraped, scraped out or cut depending on the nature of the soil.
  • the cutting and grinding tool crown is provided with conveying and comminution tools which immediately follow in the direction of the narrowing bell area, at least for the most part extend the bell wall.
  • the tool sections near the mine which can be designed like a shovel, mainly serve to break down the material on the face and transport it into the interior of the tool bell, while the tool sections further inside the Gloeken mainly serve as crushing, grinding and comminution tools.
  • a grinding tool according to the invention protrudes from the tool bell bottom section into the inside of the tool bell, which, seen in longitudinal section, has such an external profile that, together with the tool bell inner wall that gradually tapered towards the tool bell bottom section, a tapered toward the Bottom section forms gradually reducing annulus. If the earth removed from the tools e.g. with rock fragments, enters this annular space, and if the rock fragments are larger than the clear width of the annular space between the bell inner wall and the grinding tool, the rock is immediately comminuted at least to the grain size limited by the annular space.
  • the tool bell and the grinding tool are rotatably mounted relative to each other, so that rock and rubble stock Different types of parts can be processed by appropriate operation of the shredding tools.
  • the grinding tool is also relatively longitudinally displaceable with respect to the tool bell, depending on the selected axial position, a change in the opening angle of the annular space between the tool bell and the grinding tool can be adjusted according to the most favorable conditions on site or changed during opening. So that on. the material which has been mined and shredded according to the invention can be discharged quickly from the tunnel boring machine, opens into the annular space connected to a pressurized water supply
  • Conveyor nozzles which flush the material into discharge channels so that it can be passed through the interior of the machine, reach the tail end and be transported there.
  • the tunnel boring machine according to the invention can be used universally, which is further substantiated by the following description.
  • the drilling machine of the tunnel boring system is subdivided into a control section at the head end and a trailing section at the tail end, and the control section is relative to the trailing section in relation to FIG the longitudinal central axis can be deflected universally by a few degrees. Because of this subdivision, the control section can drive up tunnel curves in accordance with the respective deflection about the longitudinal central axis.
  • the tool bell of the removal device is connected at its tool bell bottom section to an outer hollow shaft which is rotatably mounted coaxially to the control section longitudinal central axis within the control section, and a rotary drive for the tool bell is provided on the outer hollow shaft.
  • the grinding tool protruding into the interior of the tool bell has a grinding tool head on its section facing the bell opening edge region, which is attached to the end face of an inner hollow shaft that is relatively rotatable and axially displaceable concentrically in the outer hollow shaft.
  • the grinding tool head can carry a concentric grinding tool on the outer circumference with respect to the longitudinal center axis of its inner hollow shaft carrying it or, according to a modified embodiment, can be provided with tools offset eccentrically to the longitudinal center axis, which in addition to the grinding effect also enable a breaking or pre-breaking effect within the tool bell.
  • the inner hollow shaft is guided concentrically in the outer hollow shaft so as to be relatively rotatable and axially displaceable via corresponding bearing arrangements, this results in an extremely compact assembly of these two parts, which are subjected to particularly high stress, in particular under rough conditions for dismantling.
  • the rotary and sliding drives for the inner hollow shaft can be designed for optimal stability and performance despite the narrow interior conditions of the tunnel boring machine for inaccessible tunnel tube diameters, the corresponding drives are located axially behind the rotary drives for the outer shaft at one end of the Outer hollow shaft protruding section of the inner hollow shaft.
  • the delivery nozzles are arranged on the inner wall of the tool bell, and the discharge channels, which allow the dismantled and shredded material to emerge from the annular space of the tool bell, are provided as discharge openings which break through the wall of the inner hollow shaft and are transported away through the interior of the inner hollow shaft to its tail end Enable section.
  • This section of the inner hollow shaft is connected, preferably via a rotary seal housing, to a flexible pipeline for the further transport and removal of the material through the interior of the tunnel pipe sections which may adjoin the machine.
  • the outer hollow shaft, its rotary drives, the inner hollow shaft and their rotary and displacement drives are mounted in or on a supporting housing surrounding the outer hollow shaft.
  • This support housing is attached only to the head-end control section and protrudes into the tail-end trailing section, the drives mentioned being so tightly packed on the support housing that there is a sufficiently large distance between the inner wall surface of the trailing section and the entire circumference of all functional elements arranged on the support housing, which at corresponding swiveling of the head-end control section, via a plurality of control cylinders provided in accordance with the swiveling direction, the entire support housing with the components within the trailing section can be swung out, obviously the largest pivoting movement must be possible at the tail end section.
  • the removal of the dismantled and comminuted material through the interior of the inner hollow shaft uses an otherwise unused but, for reasons of stability, cavity as a transport path, the hollow shaft also offering the advantage of absolute tightness, so that the Drive units experience no functional impairment due to the dismantled material.
  • the space available through the inventive selection of the removal path through the interior of the inner hollow shaft in the interior of the trailing section can thus be used, for example, by accommodating powerful drive units, as happened in the invention.
  • the control section overlaps at least part of the outer shell of the tool bell, as a result of which an outer annular space, which is liquid-tight and pressure-resistant through sealing means, is formed between the control section and the outer wall of the tool bell.
  • an outer annular space which is liquid-tight and pressure-resistant through sealing means, is formed between the control section and the outer wall of the tool bell.
  • a plurality of nozzles of relatively small diameter provided in the bell opening edge richly adjacent bell wall distributed over the circumference and offset in the direction of the longitudinal central axis. These nozzles are connected to the water-fed outer annulus via rinsing channels and, with the appropriate water pressure, ensure that all surfaces on the tool inside the bell are rinsed off quickly and consistently. Some rows of nozzles directly adjacent to the bell opening edge area can additionally support the stripping process by rinsing out the material to be cleared. At the end of the annulus chamber facing the tool bell bottom section, a plurality of rows of nozzles of relatively large cross-section are provided, which are also connected to the outer annulus via corresponding channels through the bell wall.
  • the outer annular space can be divided, for example, by an annular segment into two annular space chambers, the channels of the flushing nozzles in one chamber and the channels of the ones in the other chamber nozzles serving to promote.
  • the tool bell is attached to the outer hollow shaft and the grinding tool head is attached to the inner hollow shaft via corresponding screw connections; so that these parts can be assembled and exchanged from the head end of the tunnel boring machine.
  • tool elements can be mounted with a suitable tool set. If soils containing clay and clay are expected with few stones, it is advantageous to install tools with a high shovel effect, while tools with predominantly stony soil are preferred, in which crushing and grinding properties are paramount.
  • the grinding tool head and the tool bell inner wall can have a similar wall profile or can carry different tools.
  • the inner wall of the tool bell and / or the outer circumferential profile of the grinding tool head can be provided with axially parallel ledge teeth.
  • right-hand or left-hand screw-like ledge teeth can also be used.
  • tools can also be used which are provided with wart teeth on the respective peripheral surface.
  • Hard metal inserts for example hard metal pellets or hard metal round shank chisels, can also be inserted or pressed into the peripheral surface. If necessary, welded-on wear teeth or wear strips, studs and the like can also be used.
  • the inner wall curvature of the tool bell and / or the curvature or inclination of the grinding tool head on its outer circumferential profile can be varied by suitable tool selection, depending on the anticipated conditions of use.
  • the bell shape of the inner wall in conjunction with the dome-like grinding tool head in its basic form, especially when the grinding tool is displaced, allows a wide range of variations for the design of the inner annular space which is used for crushing or grinding.
  • the tunnel boring diameters that are drilled with the tunnel boring machine according to the invention are mainly in a diameter range of 35 cm to 80 cm, and the tunnel boring machine according to the invention removes the accumulated comparatively quickly, the tunnel is driven open at an increased driving speed, especially when the speed is easy to process Earth-moving, extremely smooth instead of, especially since any obstacles are not pushed long in front of the machine, but are ground. Under some operating conditions, it may be helpful to give the tunnel boring machine additional centering in addition to guiding it over the control section and the trailing pipe. For this purpose, the milling tool head can be pushed axially into the face over the plane in which the grinding and milling tool ring rotates, so that the dome-shaped curve of the milling tool exerts a supporting centering effect.
  • discharge ports in the convertible d ung the inner hollow shaft as an axially parallel slot openings to be formed, such that in each displacement position of the inner hollow shaft at least a portion of the discharge openings is washed directly from the Abddydüsen.
  • the tunnel boring system enables tunnel boring at an increased rate of advance over tunnel lengths which could not be driven with previous drilling machines. So that the pipes, usually made of concrete, which adjoin the tail end of the tunnel boring machine can be pushed over long lengths during pipe pre-pressing, intermediate press stations can be provided after a number of tunnel pipe sections, which, in cooperation with the main press station, pre-press the respective tunnel pipe sections.
  • the tunnel boring machine 80 shown in FIG. 1 carries at its drilling machine head end 81 a mining tool bell 6 of the mining device 82, which penetrates into the soil to be extracted and bores a tunnel with the diameter of the pipe size to be laid. Since the excavation device 82 encompasses the entire tunnel cross-section to be drilled, the soil bounded by tunnels through the outer peripheral edge of the excavation device is cut or cut out by a cutting and grinding tool crown 2, which is located at a bell opening edge area 85 (FIG. 2) broken and then into a tool bell inner area 86 introduced.
  • a cutting and grinding tool crown 2 which is located at a bell opening edge area 85 (FIG. 2) broken and then into a tool bell inner area 86 introduced.
  • the excavated soil is then transported essentially up to a tool bell bottom section 88 through the inner region 86 and with the addition of water through discharge openings 17, which are located in the vicinity of the tool bell bottom section 88 in a wall of an inner hollow shaft 25, into the interior 92 introduced this inner hollow shaft through the interior, transported to the end of the drilling machine 84 and discharged from there via a flexible pipeline 56, optionally through tunnel pipe sections 83 attached to the tunnel drilling machine.
  • the tool bell 6 is mounted concentrically to the longitudinal axis L of the drilling machine on a flange section 21 of an outer hollow shaft 27.
  • a rotary drive 37 is provided which drives the outer hollow shaft and thus the tool bell in a clockwise or counterclockwise direction.
  • the inner hollow shaft 25 is mounted and guided concentrically in the outer hollow shaft 27 and has a grinding tool 89 at its end facing the tool bell 6.
  • radial bearings 23 and 41 serve to radially support the inner hollow shaft 25.
  • FIG. 2 it can be seen that the radial bearing 23 is seated on a circumferential surface of the inner hollow shaft 25 sliding guide bushing 22, which allows a relative displacement of the inner hollow shaft 25 in the axial direction to the outer hollow shaft 27 and thus to the tool bell 6.
  • a corresponding plain bearing bush is located also on the further radial bearing 41 shown only in FIG. 1, which is located in the direction of the tail end of the machine behind the outer hollow shaft 27. 1 also shows a rotary drive 54 and a displacement drive 62.
  • the inner hollow shaft 25 can be moved from the position shown in full lines in FIG. 1, in which the grinding tool 89 is in its position retracted into the tool bell 6, and a position indicated by broken lines in FIGS. 1 and 2 are displaced, in which at least the front end of the grinding tool 89 projects beyond the plane occupied by the cutting and grinding tool crown 2.
  • the rotary drive 54 permits a left or right rotation of the inner hollow shaft 25, regardless of the rotation and direction of rotation of the outer hollow shaft 27.
  • the tunnel boring machine 80 consists of two main parts, a head-end control section 93 and a tail-end trailing section 94.
  • FIG. 2 shows how the two sections engage with one another with overlapping circumferential edges 29, 32 and an interposed sealing ring 30.
  • This arrangement consisting of the peripheral edges and the sealing ring serves primarily as a sealing protection, so that no soil and the like can penetrate into the inner region of the trailing section 94.
  • the actual coupling between the control section 93 and the trailing section 94 takes place solely via control cylinders 33, of which only two of a plurality of control cylinders provided over the inner circumference are shown in FIG. 1.
  • control cylinders 33 By selected actuation of these control cylinders, the head-end control section 93 with respect to the Swivel the longitudinal center axis L by a few angular degrees, which makes it possible to drive up tunnel curves.
  • a support housing 95 which encompasses a bearing 36 of the outer hollow shaft 27, a part of the rotary drive 37 for the outer hollow shaft and the radial bearing 41, which serve to support the inner hollow shaft 25, in the manner of a housing shell.
  • the contour of this support housing 95 is shown in FIG. 1 with a dense parallel dashed line.
  • the support housing 95 itself, which thus supports the outer hollow shaft 27, its rotary drive 37, the inner hollow shaft 25 and the rotary and displacement drives 54 and 62, is attached to the head-end control section 93, specifically via a support flange 64 (FIG. 2).
  • the support housing protrudes into the interior of the trailing section 94, so that when the control section is pivoted by means of the control cylinder 33, the support housing 95 is pivoted along with all the components supported on it.
  • the functional elements arranged on the support housing 95 are grouped in an optimally compact manner.
  • the rotary drive 37 comprises tandem hydraulic motors 100, which, viewed in the axial direction, are arranged in a star shape around the outer hollow shaft 27 or the corresponding section of the support housing 95 and, via drive pinions 40, set a drive sprocket 39 placed on the outer hollow shaft in rotation.
  • a corresponding arrangement of hydraulic motors 101 is provided for the rotary drive 54 of the inner hollow shaft 25.
  • a tandem motor arrangement can also be selected here.
  • Lift cylinders 104 which, as can be seen in FIG. 1, serve as displacement drive 62 Lich, attack on the one hand on the support housing 95 and on the other hand on the housing of the rotary drive 54 and, when actuated, cause a relative displacement between the outer hollow shaft 27 and the inner hollow shaft 25, also called telescoping.
  • the slide bearing bushes 22 which guide the inner hollow shaft during the displacement are subject to high loads and, particularly when the hollow shaft is retracted, due to possible material effects on the surface of the hollow shaft.
  • sealing elements 19 are arranged which enclose the inner hollow shaft and keep the surface thereof as free as possible of impurities.
  • high-pressure grease channels can be provided in the bearing area, which enable an additional and controllable addition of lubricant as required.
  • the bell opening edge region 85 (FIG. 2), as mentioned, carries the cutting and grinding tool crown 2. This has an overlap with respect to the outer diameter of the head-end control section 93, that is to say that the overall diameter of the tool bell on the cutting and grinding tool crown 2 is somewhat larger is that of the control section 93, so that the tunnel diameter cut or drilled from the ground permits problem-free re-pressing of the tunnel boring machine and the pipes to be laid.
  • a plurality of blade-like strip elements (see FIG. 4) adjoin the circumference of the inner wall of the tool bell.
  • strip elements can be left or right-handed helical fen or consist of axially parallel strips.
  • the optimal tooling of the tool bell inner wall 87 depends on the respective application. In all circumstances, however, the blades have a double function, namely on their section facing the bell opening edge region 85 they serve primarily as removal and conveying tools, while the ledge sections facing the tool bell bottom section 88 also carry out any necessary size reduction in addition to the removal of the material accomplish.
  • the cutting and grinding tool crown 2 it is possible, for example, to cut or drill through unexpected stone boulders or foundations or parts of large boulders, depending on the location, without removing a major obstacle and also without the need for one To avoid obstacles.
  • the blades in the blade area 1, (FIG.
  • the grinding tool head 11 of the grinding tool 89 shown in FIGS. 5 and 6 is, as a comparison with FIG. 4 shows, with a corresponding outer jacket profile which is formed from strips 12. occupied.
  • the strips or groin teeth are arranged helically to the longitudinal central axis and serve accordingly like that Providing the tool bell in the front area according to FIG. 2 of the grinding tool 89 primarily for conveying the overburden and in the area facing the tool bell bottom section 88 for grinding or crushing for the removal of otherwise too large soil components.
  • annular space 91 is formed between these two tool parts arranged coaxially to one another, which decreases in size in the direction of the tool bell bottom section 88.
  • the size and shape of this annular space 91 can be changed. It is essential that the annular space 91 has a size that is set to the subsequent discharge channels, so that no blocking of the discharge paths by excessively large rocks is possible. It is also important that the mutual assignment of the tool profiles on the inner wall of the bell and on the outer casing of the grinding tool 89 is selected so that the rock to be ground is also gripped on all sides and broken or ground accordingly.
  • FIG. 7 and 8 show several design options for the tool set, the shown setting option of the grinding tool head also being provided for the tool bell 6, which is not shown separately.
  • a grinding tool head has pyramid warts 74, a further prism warts 75 and a third pressed-in hard metal pellet 76.
  • FIG. 8 it is shown how the tool head with pressed hard metal strip pieces 77, with welded-on wear teeth or strips 78 and with inserted ones Carbide round shank chisels 79 equipped can be.
  • FIG. 8 shows several developments are shown in FIG.
  • 71 shows a development of a set of teeth or warts in an axially parallel configuration
  • 72 shows a corresponding development of a set of teeth or warts with right or left screw pitch
  • 73 shows the development of a set of teeth or warts in a staggered arrangement.
  • the grinding tool head 11 is shown as a rotationally symmetrical part. Either the entire part or its tool set could also be arranged eccentrically to the longitudinal center line L, so that in addition to the grinding function of the toothing or the wart set also a crusher or. Pre-breaking effect between the tool bell and grinding tool can be achieved.
  • the tool bell 6 can be unscrewed from the end of the drilling machine 81 by screws 14 from its bearing flange on the outer hollow shaft 27. A corresponding screw connection 13 is used to replace the grinding tool head 11.
  • a flushing water supply a plurality of rows, in the example shown four rows lying in parallel, conveyor channels 99 are provided in the wall of the tool bell in the vicinity of the bottom section 88, which are distributed in the circumferential direction over the tool bell 6.
  • These delivery channels 99 end on their side facing the annular space 91 in delivery nozzles 16 and on their corresponding other end in an annular space chamber 70, in which the rinsing water is relative low pressure is stored.
  • This flushing water flows through the conveying channels 99 and the conveying nozzles 16, which have a corresponding opening width in order to obtain a large water throughput, and flush the conveyed material located in the annular space 91 into the interior 92 of the inner hollow shaft 25, from where it flows through the flexible pipeline provided on the tail end 56 is transported away.
  • four discharge openings 17 are provided, distributed uniformly over the circumference of the inner hollow shaft, which run obliquely towards the interior 92 in the direction of the tail end of the tunnel boring machine, in order to permit the most favorable flow possible.
  • the annulus chamber 70 is a section of an outer annulus 9, which is accommodated within the control section 93, namely between the tool bell outer wall 96 and a control section casing 10 concentrically enclosing this outer wall. Between the control section casing 10 and the outer wall of the removable tool bell 6 Sealing means 4,5,18 are provided, which close the annular space 9 in a liquid-tight and pressure-tight manner.
  • the annular space 9 is divided by an annular segment 69 into the aforementioned annular space 70 for the rinsing water and a second annular space 98. Corresponding sealing elements of the ring segment 69 ensure a pressure-tight closure of the annular chamber 98 within the annular space 9.
  • This annular chamber 98 is also connected to a water supply, but the water in this chamber is at a significantly higher pressure than in the adjacent chamber 70.
  • the annular chamber 98 is located Via nozzle channels 8, which pass through the tool bell wall, in connection with pressure nozzles 97 on the tool bell inner wall 87, which are primarily under high pressure in the removal area, especially in the blade area 1 discharge the water from said annulus 98. Because of the pressure conditions described and the choice of narrow cross sections for the nozzles 97, sharp water jets emerge from them, which. serve to keep the tool equipment and the entire interior of the tool bell free from adhering soil, so that the tool function is not impaired, and furthermore to flush the face as far as possible, in order to support the removal of the material to be removed.
  • nozzles also exert a certain cooling effect when grinding and crushing the material on the tools and on the cutting and grinding tool crown 2 and support the grinding of rock.
  • a number of rows of pressure nozzles 97 are shown in FIG. a row of nozzles facing the head end is fed via a pressurized water channel 3. If the conditions of use make it necessary that only very specific selected pressure nozzles come into operation, the pressure water nozzle channels which are not required can be shut off by means of nozzle sealing plugs 68, if necessary before the fitting of the suitable tool bell 6.
  • the grinding tool 89 can be displaced on the inner hollow shaft with respect to its direction of rotation, its speed of rotation and its axial position relative to the tool bell 6 and its speed of rotation and direction of rotation, practically all conceivable operating conditions can be mastered with the tunnel boring machine 80 in the manner described. Overall, the tunnel boring machine opens up the possibility of adequately responding to all obstacles that arise during tunneling via the remote-controlled operation of the drives, and thereby the To control the tunnel boring machine so that the stress limits of the tools are not exceeded.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP84115807A 1983-12-23 1984-12-19 Système de forage de tunnel pour l'avancement des tunnels par poussage de tubes Expired EP0146918B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115807T ATE33057T1 (de) 1983-12-23 1984-12-19 Tunnelbohrsystem zum auffahren von tunneln mittels rohrvorpressung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6914/83 1983-12-23
CH691483 1983-12-23

Publications (2)

Publication Number Publication Date
EP0146918A1 true EP0146918A1 (fr) 1985-07-03
EP0146918B1 EP0146918B1 (fr) 1988-03-16

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EP84115807A Expired EP0146918B1 (fr) 1983-12-23 1984-12-19 Système de forage de tunnel pour l'avancement des tunnels par poussage de tubes

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EP (1) EP0146918B1 (fr)
AT (1) ATE33057T1 (fr)
DE (1) DE3469934D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537379A1 (de) * 1985-10-21 1987-04-23 Herrenknecht Gmbh Tunnelbohrmaschine
WO2002066780A1 (fr) * 2001-02-21 2002-08-29 Lovat Mts Gmbh Micro Tunnelling Systems Dispositif de forage avec insert de broyage
EP1416119A1 (fr) * 2002-10-30 2004-05-06 Claude Louis Jean Bresso Dispositif d'évacuation des déblais d'un tunnelier de creusage de galeries
KR101247664B1 (ko) * 2005-10-25 2013-04-01 씨알티 커먼 레일 테크놀로지스 아게 연료 분사 시스템용 인젝터 및 이러한 인젝터를 가지는연료 분사 시스템
CN112160762A (zh) * 2020-10-13 2021-01-01 盾构及掘进技术国家重点实验室 一种高压水射流与滚刀复合破岩的掘进机刀盘

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29516058U1 (de) * 1995-10-10 1995-12-14 Noell Service Und Maschinentechnik Gmbh, 30853 Langenhagen Microtunnel-Bohrmaschine mit Brecher und pneumatischem Bohrgutabtransport

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US2756037A (en) * 1953-12-21 1956-07-24 Max B Kirkpatrick Mining machines having oppositely rotating boring heads
FR1538551A (fr) * 1967-07-26 1968-09-06 Perfectionnements aux perceuses de tunnels, souterrains, ou analogues
DE1458675A1 (de) * 1964-11-05 1969-12-04 Dravo Corp Verfahren zum Abteufen von Schaechten oder zum Auffahren von Strecken od.dgl. in Bergbau- und Tunnelbetrieben sowie Maschinen zur Durchfuehrung des Verfahrens
US3491843A (en) * 1966-04-01 1970-01-27 Jose Molina Rodriguez Mechanism for widening galleries applicable to drilling machines
FR2349000A1 (fr) * 1976-04-21 1977-11-18 Helvoirt C Dispositif pour perforer un trou dans une digue ou un autre element du meme type
EP0042993A1 (fr) * 1980-06-30 1982-01-06 Kabushiki Kaisha Iseki Kaihatsu Koki Procédé et machine pour le percement de tunnels avec bouclier

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756037A (en) * 1953-12-21 1956-07-24 Max B Kirkpatrick Mining machines having oppositely rotating boring heads
DE1458675A1 (de) * 1964-11-05 1969-12-04 Dravo Corp Verfahren zum Abteufen von Schaechten oder zum Auffahren von Strecken od.dgl. in Bergbau- und Tunnelbetrieben sowie Maschinen zur Durchfuehrung des Verfahrens
US3491843A (en) * 1966-04-01 1970-01-27 Jose Molina Rodriguez Mechanism for widening galleries applicable to drilling machines
FR1538551A (fr) * 1967-07-26 1968-09-06 Perfectionnements aux perceuses de tunnels, souterrains, ou analogues
FR2349000A1 (fr) * 1976-04-21 1977-11-18 Helvoirt C Dispositif pour perforer un trou dans une digue ou un autre element du meme type
EP0042993A1 (fr) * 1980-06-30 1982-01-06 Kabushiki Kaisha Iseki Kaihatsu Koki Procédé et machine pour le percement de tunnels avec bouclier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537379A1 (de) * 1985-10-21 1987-04-23 Herrenknecht Gmbh Tunnelbohrmaschine
WO2002066780A1 (fr) * 2001-02-21 2002-08-29 Lovat Mts Gmbh Micro Tunnelling Systems Dispositif de forage avec insert de broyage
EP1416119A1 (fr) * 2002-10-30 2004-05-06 Claude Louis Jean Bresso Dispositif d'évacuation des déblais d'un tunnelier de creusage de galeries
FR2846703A1 (fr) * 2002-10-30 2004-05-07 Claude Bresso Agencement d'abattage de la matiere dans un sol, tel qu'un tunnelier de creusage de galeries
KR101247664B1 (ko) * 2005-10-25 2013-04-01 씨알티 커먼 레일 테크놀로지스 아게 연료 분사 시스템용 인젝터 및 이러한 인젝터를 가지는연료 분사 시스템
CN112160762A (zh) * 2020-10-13 2021-01-01 盾构及掘进技术国家重点实验室 一种高压水射流与滚刀复合破岩的掘进机刀盘

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ATE33057T1 (de) 1988-04-15
EP0146918B1 (fr) 1988-03-16

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