Groove wall milling device and method for milling milled groove in ground

Abstract

The invention relates to a groove wall milling device, comprising a groove wall milling device, which is constructed from at least two milling modules, and a support structure for suspending the groove wall milling device and for moving the groove wall milling device in the vertical direction in order to form a milled groove in the ground, according to the invention, the support structure is designed to horizontally convey the separated milling modules to a working region where the milling groove is to be created, and the support structure is formed by means of module units, each of which has an operating unit in a support frame for operating the groove wall milling device. According to the invention, the support frames of the modular units can be arranged in a line in order to form a linear support structure, and can be arranged at an angle to each other in order to form an angled support structure. The invention relates to a method for milling a milling groove in the ground, in particular by means of such a groove wall milling device.

Description

TECHNICAL FIELD

[0001] The invention relates to a trench wall milling device (Schlitzwandfräsvorrichtung, sometimes referred to as underground continuous wall milling device) according to the preamble of claim 1, 8 and 11, with a trench wall milling cutter (Schlitzwandfräse, sometimes referred to as underground continuous wall milling cutter), which is constructed from at least two milling modules and has a carrier structure for suspending the trench wall milling cutter and moving the trench wall milling cutter in the vertical direction in order to form a milling trench in the ground, wherein the carrier structure is configured for transporting the separate milling modules to a work area, at which the milling trench is to be created, and is formed using module units, which each have a running unit for operating the trench wall milling cutter in a carrier frame.

[0002] Furthermore, the invention relates to a method for milling a milling trench in the ground using a trench wall milling device according to the preamble of claim 13, 16 and 17, in which method a carrier structure is formed and assembled from module units and the trench wall milling cutter is arranged at the carrier structure and lowered into the ground in the vertical direction, wherein the ground material is milled away in the work area and the milling trench is thus formed. The trench wall milling cutter is constructed from at least two milling modules, which are transported separately from one another along the carrier structure to the work area and are connected to one another at the work area in order to form the trench wall milling cutter, and in order to operate the trench wall milling cutter, the module units are each provided with a running unit in the carrier frame. BACKGROUND

[0003] In order to create a trench in the ground, it is known to provide a trench wall milling device, as is known, for example, from DE 10 2004 013 790 A. Here, a so-called trench wall milling cutter is arranged in a vertically adjustable manner at a support column or a jib. The support column or the jib at the carrier device here usually has a height of 15 m to 30 m or more. The height of the support column is mainly determined by the height of the trench wall milling cutter.

[0004] With such a trench wall milling device, a trench wall (Schlitzwand, sometimes referred to as underground continuous wall) or a sealing wall (Dichtwand, sometimes referred to as impervious wall) can be created which can reach depths of up to 100 m and more. Such trench walls or sealing walls are used, for example, for supporting building pits or for creating groundwater barriers. It is also possible to exploit mineral resources using such a milling cutter.

[0005] In certain cases, it is necessary to create a sealing wall in or near a building, in a tunnel or in narrow spatial conditions. For this purpose, a carrier device with a large support column and a large trench wall milling cutter cannot be used.

[0006] A compact trench wall milling apparatus for creating trenches is known from EP 05 18 297 B1. This trench wall milling apparatus has a track-guided carriage with a bracket and cantilever, which is only slightly above the vertical length of the trench wall milling machine. Rope reels for carrying ropes and connecting cables, and hose reels for supplying hoses, are supported near the ground at the support bracket. The trench wall milling machine is limited to basic components such as milling wheels, drives, and pumps, with the guide frame constructed relatively small.

[0007] Another compact slot wall milling apparatus is known from EP 3 208 384 B1. In this apparatus, the compact slot wall milling machine is adjustablely supported under a yoke formed by two side-by-side support devices. The two support devices are connected to each other via a swing joint.

[0008] In these known compact slot wall milling devices, the usable height is essentially limited by the height of the slot wall milling machine. Here, the slot wall milling machine cannot be arbitrarily reduced in size because specific dimensions are required for the milling wheel, drive, pump, and especially the guide frame.

[0009] A slot wall milling machine is known from DE 60 2004 008 375 T2, in which the maintenance time for changing the cutting teeth at the milling wheel can be reduced. This is achieved by replacing the entire cutting head at the milling frame instead of replacing individual cutting teeth.

[0010] A type of slot wall milling device is known from EP 3 719 207 B1. Summary of the Invention

[0011] The present invention is based on the objective of describing a groove wall milling apparatus and a method for milling grooves in land, which enables efficient milling even in particularly confined space conditions.

[0012] This task is solved on the one hand by using the groove wall milling apparatus according to claim 1, 8 or 11, and on the other hand by using the method according to claim 13, 16 or 17. Preferred embodiments of the invention are described in the corresponding dependent claims.

[0013] According to a first aspect of the invention, the groove wall milling apparatus is characterized in that the support frames of the modular units can be arranged in a line to form a linear support structure, and can be arranged at an angle to each other to form an angled support structure.

[0014] The method for this purpose is characterized by arranging the modular units at an angle to each other to form an angled load-bearing structure. Specifically, during the execution of the method, the modular units can be moved or repositioned, with individual or all modular units moving successively through angled sections, such as tunnels. Here, the load-bearing structure can be arranged in a straight line during operation, and then arranged at an angle before or after. However, the load-bearing structure can also be arranged at an angle during operation.

[0015] Angled load-bearing structures can have one or more angles or angular regions. An angular region is located between two sections of the load-bearing structure, each section comprising at least one modular unit. The sections of the load-bearing structure can be mechanically connected or separated via special angular members (Winkelstück, elbow), where the connection is then provided only via one or more lines, particularly at least one flexible hose line, energy line, and / or data line. Preferably, in the angular region, line extensions can be inserted and / or one or more extension elements for the lines can be hooked or arranged as needed. The load-bearing structure may consist of only two sections with one or more load-bearing frames for modular units, each with an angular region, thus giving the load-bearing structure a hook shape, such as an L-shape or V-shape. However, more than two sections with multiple angular regions and one or more load-bearing frames for modular units can also be arranged, where the load-bearing structure can be C-shaped, U-shaped, W-shaped, or S-shaped. In particular, the individual sections or load-bearing frames can be oriented differently from each other, allowing the load-bearing structure to adopt an arcuate orientation, particularly a circular arc orientation, or another curved or wavy orientation. In this way, the load-bearing structure can be flexibly matched to different spatial and site conditions, such as in tunnels or pits.

[0016] Passageways for personnel can be constructed within the supporting frame of the modular unit. In corner areas, passageways can be connected to each other via walkways, with or without railings, that can be inserted into or pulled out or flipped out of the supporting frame.

[0017] Preferably, the supporting frames of the modular units can have the same cross-sectional dimensions and can be detachably connected to each other via connecting devices, particularly pin connections or threaded connections. In particular, a central modular unit can be constructed to suspend and move a slot wall milling machine in the vertical direction. Additional modular units with their own supporting frames can be constructed to be arranged on either side of the central modular unit and / or in different arrangements, allowing for a high degree of flexibility. A defined aspect ratio for the modular units can be preset, particularly based in principle on the standard container size and the container models for which it is subdivided. Preferably, the length of the modular unit can be between one and three times the width of the modular unit or the standard container.

[0018] In principle, the angle can be arbitrary, but is preferably an acute angle, especially 90 degrees. In particular, a rotating device and / or a transferring device can be arranged in or at the bottom of the trench milling apparatus, which can be used to move at least one module unit to an angled position. The angle can also relate to the main longitudinal direction, especially the extension direction of the milled trench to be created.

[0019] Another advantageous design of the invention is that the load-bearing structure has one or more angles for forming a hook shape, particularly forming an arcuate or wavy orientation of the load-bearing structure. Here, the various sections of the modular unit or the various load-bearing frames can be oriented relative to each other at the same or different angles, such that the load-bearing structure as a whole can adopt an arcuate orientation, especially a circular arc orientation, or another curved or wavy orientation. Each load-bearing frame of the modular unit can be at an angle relative to the load-bearing frames of adjacent modular units, including modules arranged with a large radius. In particular, it is possible to arrange two or more, preferably relatively short, load-bearing frames or modular units relative to each other in almost any arrangement order during operation.

[0020] The slot wall milling machine can be configured to operate in both straight and angled load-bearing structures to create milled slots. This also allows operation in narrow, corner areas, such as in tunnels.

[0021] According to another aspect of the invention, the slot wall milling apparatus is characterized in that each module unit has a lifting device for raising and lowering the support frame of the module unit substantially vertically between the operating position and the traveling position, and at least two module units have traveling devices for traveling the module units substantially horizontally in the traveling position. This also makes it feasible for the slot wall milling apparatus to travel, in particular, around corner areas.

[0022] The method for this purpose is characterized in that each module unit has a lifting device that allows the supporting frame of the module unit to rise or fall substantially vertically between the operating position and the traveling position, and at least two module units have a traveling device that allows the module units to travel substantially horizontally in the traveling position.

[0023] Preferably, each module unit has a traveling device. The traveling unit can be constructed in any suitable manner, particularly having at least one thrust cylinder (especially a hydraulic cylinder) and / or roller drive. The module unit is preferably supported on rollers for traveling, said rollers being guided particularly along tracks in the ground and / or in the top area.

[0024] According to another aspect of the invention, the slot wall milling device is characterized in that at least one module unit has a hydraulic unit as an operating unit, the hydraulic unit being configured to generate hydraulic energy, particularly for driving the milling wheel of the slot wall miller and / or for suction pumps for suctioning milling debris.

[0025] Therefore, the hydraulic unit is directly integrated into the load-bearing structure of the trench wall milling device. According to one improvement, it is particularly advantageous that the hydraulic unit has at least one hydraulic pump driven by at least one electric motor to generate hydraulic energy. In this way, long hose lines can be avoided, especially in narrow tunnels.

[0026] The method for this purpose is characterized in that at least one module unit is equipped with a hydraulic unit as an operating unit, through which hydraulic energy is generated, particularly for driving the milling wheel of the slot wall milling machine and / or for suction pumps for suctioning milling debris.

[0027] Another basic concept can be seen as follows: the slot wall milling machine is disassembled into at least two milling modules that can be detachably connected to each other. Furthermore, a support structure is provided for suspending the slot wall milling machine and moving it vertically to form a milled slot, wherein the support structure additionally has a guide device for conveying the separated milling modules. Therefore, it is no longer necessary to transport the fully prepared slot wall milling machine to the work area and create the milled slot there. Instead, the slot wall milling machine is transported to the work area as a disassembled unit of milling modules, and assembled into a complete slot wall milling machine there. For this purpose, the support structure can be constructed with corresponding guide or transport devices. Preferably, the support structure can have a structural height less than the height of the prepared slot wall milling machine. The support structure only needs to be equal to or higher than the height of a single milling module.

[0028] Therefore, milling can also be performed in principle at locations where only a very low working height is available, even lower than the height of the assembled slot wall milling machine. This is particularly possible when a so-called guide slot, for example, with a depth of 1m to 4m, is pre-fabricated in the work area, so that one or more milling modules can be inserted into the guide slot during the assembly of the slot wall milling machine.

[0029] The trench wall milling apparatus according to the invention can be used not only in tunnels or buildings. Due to its extremely low structural height (which can be less than 5m and even less than 3m), the entire trench wall milling apparatus can be equipped with or enclosed by a line-of-sight protection sleeve (sometimes called a privacy protection sleeve), a dustproof sleeve, and / or a soundproof sleeve. It is even feasible to mount the entire trench wall milling apparatus in one or two to three standard shipping containers. This is particularly advantageous when milling in urban areas, residential areas, airports or other infrastructure projects, buildings, or other sensitive construction sites.

[0030] According to an improved embodiment of the invention, at least one milled groove is filled with a coagulable suspension to form a trench wall in the soil, the suspension hardening into the trench wall. Filling with the coagulable suspension can be performed during milling using a so-called single-phase method, or by replacing the supporting suspension with the coagulable suspension at the end using a so-called two-phase method.

[0031] To produce a coagulable suspension, at least a portion of milled land material can be used, which is mixed directly in the tank or in a preparation facility outside the milling tank with a coagulable liquid to form a coagulable suspension. Attached Figure Description

[0032] The present invention will now be further described with reference to preferred embodiments, which are schematically illustrated in the accompanying drawings. In the drawings: Figure 1 A side view of the groove wall milling apparatus according to the invention is shown in a first arrangement of the modular unit; Figure 2 A side view of the groove wall milling apparatus according to the invention is shown in a second arrangement of the modular unit; Figure 3 A side view of the groove wall milling apparatus according to the invention is shown in a third arrangement of the modular unit; Figure 4 A side view of the groove wall milling apparatus according to the invention is shown in a fourth arrangement of the modular unit; Figure 5 A schematic top view of the module unit is shown as it is shifted around the corner area at different stages according to the present invention; Figure 6 Another schematic top view of the module unit is shown as it is shifted around the corner area at different stages according to the present invention; Figure 7 A perspective view of the traveling device at a module unit of the groove wall milling apparatus according to the invention is shown; Figure 8 Showing Figure 1A perspective enlarged view of the first milling module of the groove wall milling device; and Figure 9 Showing Figure 1 A magnified perspective view of the second milling module of the groove wall milling device. Detailed Implementation

[0033] exist Figures 1 to 4 Various arrangement possibilities for forming the modular units 60 of the groove wall milling apparatus 10 according to the invention are presented. In the presented implementation possibilities, the groove wall milling apparatus 10 has a total of six modular units 60a to 60f. A milling module 40 is located in the central modular unit 60a, which is positioned directly above the milling groove, while a second milling module 50 for forming the groove wall milling cutter 30 is located in the adjacent second modular unit 60b.

[0034] According to Figure 1 In this embodiment, the third module unit 60c is connected to the second module unit 60b, and the third module unit is equipped with an operating unit for controlling the groove wall milling device 10. At least one drum is rotatably supported in each of the other module units (fourth to sixth) 60d to 60f, which can be configured to deliver supply hoses, suction hoses, and / or energy lines and data lines. Furthermore, a seventh module unit (not shown) with a hydraulic unit can be arranged adjacent to the sixth module unit 60f.

[0035] Each module unit 60 has a support-like load-bearing frame 62, which may have different lengths but have the same cross-section. The load-bearing frames 62 of each module unit 60 can be connected to each other longitudinally via a detachable connecting device to form the load-bearing structure 20 of the groove wall milling device 10.

[0036] according to Figure 2 The layout largely corresponds to Figure 1 The groove wall milling device 10, wherein, due to the compatible design of the modular unit 60, the sixth modular unit 60f with a flexible reel is arranged on the axially opposite side relative to the central first modular unit 60a and is placed therein in order to form the load-bearing structure 20.

[0037] According to Figure 3 In the modified arrangement, the third module unit 60c with the operating unit is also arranged in a way that the first module unit 60a is shifted from the right to the upper left about the center, due to the compatible design of the module unit 60c. In this way, due to the modularity and replaceability of the individual module units 60, almost any layout of the module units 60 used to form the groove wall milling device 10 can be achieved.

[0038] To reposition the groove wall milling device 10, such as Figure 4As schematically presented, the sixth module unit 60e (along with any other module units 60) can be detached from the remaining support structure 20 and moved, displaced, and rotated individually.

[0039] The modular structure of the slot wall milling device 10 allows for efficient movement and displacement, particularly in tunnels 5 with angled tunnel regions 7 (especially corner regions), such as... Figure 5 and 6 As schematically illustrated. Due to the modular structure of the slot wall milling device 10 with individual module units 60, the module units can be moved individually and transported efficiently around the angled tunnel region 7. Rotating or transferring devices (not shown) can be arranged in the angled tunnel region 7, which can be constructed independently of or as part of the slot wall milling device 10.

[0040] With its modular structure, the trench wall milling device 10 can also be arranged at an angle, especially in the tunnel 5, or positioned and used along the angled tunnel area 7. The load-bearing structure 20 can also be constructed with multiple angled sections (Anwinkelungen, sometimes called bends).

[0041] To enable the movement of a single module unit 60, a traveling device 70 can be arranged at one or all of the module units 60, the traveling device being combined with Figure 7 Schematic illustration and explanation. The traveling device 70 may in particular have a setting carriage 72, which is linearly guided at the support frame 62 via a linear guide 76 and has rollers 74 rotatably supported at its lower end. For traveling, the rollers 74 may be provided with roller drivers (not shown) for rotating and driving the rollers 74.

[0042] Via at least one lifting device 78 (which may in particular be configured with a hydraulic cylinder), the setting carriage 72 can be vertically adjusted between a lower traveling position and an upper stationary or resting position. If the lifting device 78 and thus the setting carriage 72 retract upwards, the module unit 60 is placed on the ground and thus secured. By extending the lifting device 78, the setting carriage 72 is pushed downwards against a preferably unpresented track by rollers 74. As a result, the supporting frame 62 is lifted off the ground and removed, thus allowing the module unit 60 to travel.

[0043] The first milling module 40 is in Figure 8 This is presented in more detail below. Two pairs of milling wheels 42 are rotatably supported at a base frame 44 that is approximately U-shaped in cross-section. Here, each pair of milling wheels 42 is rotatably supported at a central milling shield 43, which is positioned on the underside of the base frame 44. The milling wheels 42 have removal teeth on their outer sides in a generally known manner for removing soil material.

[0044] A suction pipe 45 is provided between two pairs of milling wheels 42 that rotate in opposite directions relative to their center for suctioning the milled soil material along with surrounding support fluid or milling fluid. A milling driver 46 is mounted on each pair of milling wheels 42 at the base frame 44. In principle, the driver can also be integrated into the milling wheel 42. Furthermore, a vertical and a horizontal surface 48 are provided on the base frame 44 as a first connecting surface, in which through holes 49 for bolt connections can be provided. A receiving portion 41 is used for connection to a supply or operating unit.

[0045] according to Figure 9 A second milling module 50 is presented, which consists of a box-shaped guide frame 54. The guide frame 54 corresponds approximately in its cross-section to the milling cross-section of the first milling module 40, such that the slot wall milling cutter is guided within the milling slot itself via the guide frame 54. For position correction, a plate-shaped setting element 56, which is deployable by means of a hydraulic cylinder in a generally known manner, is provided, and a certain positional adjustment relative to the wall of the milling slot can be achieved by means of the plate-shaped setting element.

[0046] A second connecting surface 58 is provided at the guide frame 54, which allows for precise positioning of the first connecting surface 48 at the first milling module 40. A drive unit 52 configured as a pump is housed inside the guide frame 54. A retaining device 55 for holding a support rope is provided in the central region on the upper side of the guide frame 54.

[0047] The first milling module 40 and the second milling module 50 can be mechanically connected to each other.

Claims

1. A groove wall milling device, equipped with A slot wall milling machine, which is constructed from at least two milling modules (40, 50), and A support structure (20) for suspending the trench wall milling tool and moving the trench wall milling tool in the vertical direction to form a milled trench in the land. in, The support structure (20) is configured to transport the separated milling modules (40, 50) horizontally to the work area where the milling grooves are to be created, and The supporting structure (20) is formed using modular units (60), each of which has an operating unit within the supporting frame (62) for operating the slot wall milling machine. Its features are, The load-bearing frames (62) of the module unit (60) can be arranged in a line to form a linear load-bearing structure (20), and can be arranged at an angle to each other to form an angled load-bearing structure (20).

2. The groove wall milling device according to claim 1, characterized in that, The supporting frames (62) of the module units (60) have the same cross-sectional dimensions and can be interconnected by connecting devices.

3. The groove wall milling device according to claim 1 or 2, characterized in that, The central module unit (60a) is configured to suspend the slot wall milling machine and move the slot wall milling machine in the vertical direction, and The additional module units (60b to 60f) with their supporting frames (62) are configured to be compatible so as to be arranged on both sides of the central module unit (60a) and / or arranged in different arrangements from each other.

4. The slot wall milling apparatus according to any one of claims 1 to 4, characterized in that, The angle mentioned is an acute angle, especially a 90-degree angle.

5. The slot wall milling apparatus according to any one of claims 1 to 4, characterized in that, It is equipped with a rotating device and / or a transfer device, which can be used to move at least one module unit (60) to an angled position.

6. The slot wall milling apparatus according to any one of claims 1 to 5, characterized in that, The load-bearing structure (20) has a single angle to form a hook shape, or has multiple angles, in particular forming an arc or wave-shaped orientation of the load-bearing structure (20).

7. The slot wall milling apparatus according to any one of claims 1 to 6, characterized in that, In both the linear support structure (20) and the angled support structure (20), the groove wall milling machine can operate to create milled grooves.

8. A groove wall milling apparatus, particularly according to any one of claims 1 to 7, comprising... A slot wall milling machine, the slot wall milling machine being constructed from at least two milling modules (40, 50), and A support structure (20) for suspending the trench wall milling tool and moving the trench wall milling tool in the vertical direction to form a milled trench in the land. in, The support structure (20) is configured to transport the separated milling modules (40, 50) to the work area where the milling grooves are to be created, and The supporting structure (20) is formed using modular units (60), each of which has an operating unit within the supporting frame (62) for operating the slot wall milling machine. Its features are, Each module unit (60) has a lifting device (78) for raising and lowering the support frame (62) of the module unit (60) substantially vertically between the operating position and the traveling position, and At least two module units (60) have a traveling device (70) for traveling the module units substantially horizontally in the traveling position.

9. The groove wall milling device according to claim 8, characterized in that, Each module unit (60) has a traveling device (70).

10. The slot wall milling apparatus according to claim 8 or 9, characterized in that, The traveling device (70) has at least one thrust cylinder and / or a roller driver for the rollers (74).

11. A slot wall milling apparatus, particularly according to any one of claims 1 to 10, comprising... A slot wall milling machine, which is constructed from at least two milling modules (40, 50), and A support structure (20) for suspending the trench wall milling tool and moving the trench wall milling tool in the vertical direction to form a milled trench in the land. in, The support structure (20) is configured to transport the separated milling modules (40, 50) to the work area where the milling grooves are to be created, and The supporting structure (20) is formed using modular units (60), each of which has an operating unit within the supporting frame (62) for operating the slot wall milling machine. Its features are, At least one module unit (60) has a hydraulic unit as an operating unit, which is configured to generate hydraulic energy, in particular for driving the milling wheel (42) of the groove wall milling machine and / or a suction pump for suctioning milling debris.

12. The groove wall milling device according to claim 11, characterized in that, The hydraulic unit has at least one hydraulic pump, which is driven by at least one electric motor to generate hydraulic energy.

13. A method for milling a milling groove in land using a groove wall milling device (10) according to any one of claims 1 to 12, wherein: - The load-bearing structure (20) is formed and assembled from modular units (60), and - A groove wall milling tool is positioned at the supporting structure (20) and lowered vertically into the ground, whereby the soil material is milled away in the work area, thus forming the milled groove. - in, The slot wall milling machine is constructed from at least two milling modules (40, 50), which are separately conveyed to the work area along the support structure (20) and interconnected therein to form the slot wall milling machine. - in, In order to operate the groove wall milling machine, each module unit (60) is provided with an operating unit in the supporting frame (62). Its features are, The module units (60) are arranged at an angle to each other to form an angled load-bearing structure (20).

14. The method according to claim 13, characterized in that, The milling is performed in a tunnel (5) with at least one angled tunnel region (7), and the angled bearing structure (20) is arranged in the angled tunnel region (7).

15. The method according to claim 14, characterized in that, A rotating device and / or a transferring device are arranged in the angled tunnel region (7) to rotate at least one module unit (60) by the angle and / or transfer it in order to pass through the angled tunnel region (7).

16. A method for milling a milling groove in land using a groove wall milling apparatus (10) according to any one of claims 13 to 15, particularly according to any one of claims 1 to 12, wherein: - The load-bearing structure (20) is formed and assembled from modular units (60), and - A groove wall milling tool is positioned at the supporting structure (20) and lowered vertically into the ground, whereby the soil material is milled away in the work area, thus forming the milled groove. - in, The slot wall milling machine is constructed from at least two milling modules (40, 50), which are separately conveyed to the work area along the support structure (20) and interconnected therein to form the slot wall milling machine. - in, In order to operate the groove wall milling machine, each module unit (60) is provided with an operating unit in the supporting frame (62). Its features are, Each module unit (60) has at least one lifting device (78) by which the supporting frame (62) of the module unit (60) is raised or lowered substantially vertically between the operating position and the traveling position, and At least two module units (60) have a traveling device (70) which enables the module units (60) to travel substantially horizontally in the traveling position.

17. A method for milling a milling groove in land using a groove wall milling device (10) according to any one of claims 13 to 16, particularly according to any one of claims 1 to 12, wherein: - The load-bearing structure (20) is formed and assembled from modular units (60), and - A groove wall milling tool is positioned at the supporting structure (20) and lowered vertically into the ground, whereby the soil material is milled away in the work area, thus forming the milled groove. - in, The slot wall milling machine is constructed from at least two milling modules (40, 50), which are separately conveyed to the work area along the support structure (20) and interconnected therein to form the slot wall milling machine. - in, In order to operate the groove wall milling machine, each module unit (60) is provided with an operating unit in the supporting frame (62). Its features are, At least one module unit (60) is equipped with a hydraulic unit as an operating unit to generate hydraulic energy, particularly for driving the milling wheel (42) of the groove wall milling machine and / or for suction pumps for suctioning milling debris.

18. A method for creating a milled groove in the ground from a tunnel using a groove wall milling apparatus (10) particularly according to any one of claims 1 to 12, wherein, The module units are brought to the work area individually or in connection, particularly on a track. Assemble the groove wall milling device (10) in the work area. Create milling grooves, Selectively, hardened material, preferably reinforcing elements, are introduced into the milling groove. Separate the milling module. Separate at least two module units. At least one module unit is moved to an angled tunnel area and rotated there, and then moved to another straight tunnel area. The separated module units are reconnected to each other. Reconnect the separated milling modules, and Create a new milling slot.

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