METHOD AND DEVICE FOR CREATING A FOUNDATION ELEMENT IN THE GROUND FROM A GROUND MORTAR

Description

[0001] The invention relates to a method for creating a foundation element in the ground from a soil mortar, with a soil removal device having at least one rotatingly driven processing tool, wherein the at least one processing tool is moved substantially vertically to the ground and soil material is removed by the at least one rotatingly driven processing tool while forming a hole in the ground, a setting suspension is supplied into the hole and the removed soil material remains at least partially in the hole and is mixed in situ by the at least one rotatingly driven processing tool with the supplied suspension to form the soil mortar, wherein the formed soil mortar hardens in the ground after the at least one rotatingly driven processing tool is withdrawn from the hole to form the foundation element, wherein at least the vertical movement of the at least one processing tool,The rotary movement of the at least one machining tool, the supply of suspension and at least one dimensioning of the foundation element constitute process parameters, according to the preamble of claim 1.

[0002] The invention further relates to a device for creating a foundation element in the ground from a soil mortar, comprising a soil removal device with at least one rotatingly driven processing tool, wherein the device is configured to move the at least one processing tool substantially vertically to the ground and to remove soil material by means of the at least one rotatingly driven processing tool while forming a hole in the ground, to supply a settable suspension into the hole by means of a supply device and to mix the supplied suspension with the removed soil material in situ in the hole by means of the at least one rotatingly driven processing tool to form the soil mortar, wherein the formed soil mortar hardens in the ground after the at least one rotatingly driven processing tool is withdrawn from the hole to form the foundation element.wherein at least the vertical movement of the at least one machining tool, the rotary movement of the at least one machining tool, the supply of suspension and at least one dimensioning of the foundation element constitute process parameters, according to the preamble of claim 10.

[0003] Foundation elements made from soil mortar are particularly economical and ecological. Unlike conventional mortar, which mixes a binder with a liquid and added aggregate, especially sand or gravel, soil mortar uses the soil material directly excavated during soil preparation as its aggregate. This eliminates the costs associated with extracting and transporting aggregate from external sources to the construction site. Furthermore, using soil material directly generated during soil preparation for the soil mortar also reduces disposal costs for removing excavated material from the site and for landfilling the removed soil.

[0004] Creating a foundation element, particularly a foundation pile or a diaphragm or cutoff wall, from soil grout requires increased effort during the formation process to ensure sufficient quality and avoid unnecessary excess consumption of setting grout. Furthermore, the operator faces particular challenges when creating a hole in the ground where the foundation element is formed in situ from the soil grout directly within the hole. Sufficient rotational speed of the processing tool and an appropriate feed rate for the setting grout are crucial for achieving high-quality foundation elements. These factors can vary depending on local conditions and the drilling depth. This demands a high level of concentration and considerable experience from the operator.

[0005] EP 1 452 645 B2 discloses a generic method for constructing a diaphragm wall in the ground, in which a diaphragm wall cutter with rotating milling wheels is lowered into the ground, removing and crushing soil material. The removed soil material is mixed with a setting slurry within the milled trench, forming soil mortar. Before the soil mortar hardens, the diaphragm wall cutter is withdrawn from the mortar-filled trench. Furthermore, it is possible to insert support beams into the diaphragm wall using a crane before the soil mortar has hardened.

[0006] Such a method for creating a retaining wall in the ground from a soil mortar is also known as the CSM™ method.

[0007] It is known, for example from DE10 2004 005 967 A1, to form a support or borehole wall in the ground from a soil mortar using a drilling and mixing screw, and in particular an arrangement of parallel drilling and mixing screws. In this process, the soil material removed during drilling is mixed with a setting liquid within the borehole to form a soil mortar. Such a method is known in particular under the name MIP™.

[0008] The invention is based on the Task The aim is to specify a method and a device with which a foundation element can be produced in the ground from a soil mortar particularly efficiently and with high execution quality.

[0009] The problem is solved, firstly, by a method having the features of claim 1 and, secondly, by a device having the features of claim 10. Preferred embodiments of the invention are specified in the dependent claims.

[0010] The method according to the invention is characterized in that the method is carried out automatically at least in sections using a control device, wherein at least one method parameter is entered into the control device as a preset value and that, depending on the at least one preset value entered, at least one remaining method parameter is set and controlled by the control device.

[0011] A fundamental idea of ​​the invention is to avoid leaving the process of creating a foundation element in the ground from a soil mortar solely to the experience of a machine operator, but rather to provide a control device with which the process can be carried out partially or fully automatically. The control device is designed such that at least one preset value is specified as a process parameter by the machine operator or a central control unit, while the remaining essential process parameters are then determined and controlled by the control device according to a control program.The control device can preferably be designed in such a way that, depending on the construction site and in particular depending on the specifications of the device operator or a central office, it is possible to freely set which process parameter(s) serve as the setpoint value and which process parameters are determined and adjusted by the control device depending on this.

[0012] A control logic or control program for the control unit can be created by storing formulas or, in particular, pre-calculated tables within the control unit. For example, if a vertical movement and / or a rotational speed of the machining tool is specified as a target value, a feed quantity of settable suspension can be controlled. Alternatively, a feed quantity or delivery rate of settable suspension can be specified, while the control unit controls a suitable rotational speed and / or a suitable vertical movement of the machining tool. In the case of a vertical movement, the control unit can control lowering, pulling, or preferably both.

[0013] The inventive method enables the particularly efficient production of foundation elements from a soil mortar with a high and largely consistent quality. For the purposes of this invention, the term "foundation elements" is to be understood generally and includes not only foundation elements but also shoring, sealing, support, and block elements, as well as other elements that are created in the ground. Such foundation elements made of soil mortar can also be referred to as soil mixture elements.

[0014] Key general process parameters for creating a foundation element from a soil mortar can include, in particular, the vertical movement of the at least one processing tool, a rotary movement of the at least one processing tool, the supply of suspension and at least one dimensioning of the foundation element.

[0015] According to a further development of the invention, the process parameters include at least one of the following parameters, or additionally comprise them: rotational speed of the machining tool, direction of rotation of the machining tool, torque of the machining tool, number of rotations per depth stroke of the machining tool, vertical movement speed or vertical feed force when lowering or pulling the machining tool, feed rate of suspension, feed quantity of suspension, or a combination of these parameters. The parameters "rotational speed of the machining tool, direction of rotation of the machining tool, torque of the machining tool, and number of rotations per depth stroke of the machining tool" represent, approximately, specific details of the general process parameter "rotational movement of the at least one machining tool".The parameters "vertical movement speed or vertical feed force when lowering or withdrawing the machining tool" are assigned to the process parameter "vertical movement". The control unit can be connected to appropriate sensors for directly acquiring or determining the process parameters, as well as to appropriate adjustment devices on the drilling rig, in order to control and influence, in particular, corresponding drive devices such as a feed drive, a rotary drive, a feed pump, etc. The parameters "suspension feed rate and suspension feed quantity" refer to the general process parameter "suspension feed". The process parameter "foundation element dimensions" can refer to the diameter of the foundation element, its axial length / depth, and specific external contours such as cylindrical, conical, or with a disc-shaped bearing surface.

[0016] Another preferred embodiment of the invention consists in the at least one rotary-driven processing tool comprising a drilling tool which is driven to rotate about a substantially vertical drilling axis, with the hole being created by drilling. The drilling axis and the direction of advance are particularly aligned. The method can be carried out by a well-known earth auger with one or more parallel, rod-shaped processing tools designed for removal and mixing.

[0017] Alternatively, an advantageous embodiment of the invention comprises a milling wheel driven by a rotary motion, which is driven to rotate about a substantially horizontal milling wheel axis, with the hole being created by milling. The horizontal milling wheel axis and the vertical feed direction are perpendicular to each other. The at least one milling wheel can, in particular, be arranged on a so-called trench cutter. Preferably, two milling wheels are arranged as a milling wheel pair on a common bearing plate located between the two milling wheels. More preferably, two such pairs of milling wheels are arranged on the underside of a support frame of a trench cutter, so that when the trench cutter is lowered or sunk into the ground, an approximately rectangular milled hole is created.

[0018] The milling device can preferably be lowered into the ground by means of a support cable solely due to its own weight, or via a guide rod, by means of which a feed force can preferably be applied. Preferably, the settable slurry is introduced into the milled slot in the area of ​​the at least one milling wheel. The rotation of the at least one milling wheel removes and crushes the existing soil material, which is then mixed with the supplied slurry to form a soil mortar.

[0019] A preferred embodiment of the method according to the invention further comprises at least one rotatingly driven processing tool comprising at least one removal element by which soil material is removed and comminuted, and / or at least one mixing element by which the removed soil material is mixed with the supplied suspension. The at least one additional mixing element can be a mixing paddle or a mixing blade on a vertically oriented drill rod or on the outer circumference of the at least one milling wheel. The drill rod is preferably tubular, with a central feed channel for supplying the suspension. In the case of a trench cutter, scraper elements can also be arranged on the frame, which mesh with removal teeth on the milling wheel circumference to achieve a particularly good mixing effect.

[0020] According to a further development of the invention, it is preferred that the control unit receives preset values ​​for the supply of suspension into the hole and the movement of the at least one rotatingly driven processing tool, and that, depending on the entered preset values, the control unit sets a substantially vertical movement of the at least one rotatingly driven processing tool. The rotation of the processing tool can refer to a rotational speed, a torque, and / or a specific ratio between rotational speed and feed rate. If, for example, loose soil is encountered, a greater vertical movement can be set or achieved with a specific rotational movement. Conversely, if firmer soil is encountered, the axial feed rate must be reduced accordingly to maintain a desired rotational movement, in particular a set rotational speed.

[0021] A further preferred embodiment of the invention can be seen in that the control device sets a vertical lowering of the at least one rotatingly driven processing tool, provided this is not a predefined value, and / or a vertical pulling of the at least one rotatingly driven processing tool, provided this is not a predefined value. Depending, for example, on a predefined rotational speed or a predefined torque, the control device can set a suitable vertical lowering of the rotatingly driven processing tool. The vertical lowering can relate to a ratio between a lowering and a quantity of suspension supplied. The same applies to a vertical pulling of the rotatingly driven processing tool, so that a high-quality floor mortar can be produced with consistent quality during the execution of the process.

[0022] In particular, according to a further development of the inventive method, it is preferred that the control device sets a rotation of the processing tool and / or a feed rate and / or a feed quantity of suspension, provided these are not predefined values. In particular, by controlling and setting these parameters via the control device, a particularly high and consistent mortar quality can be achieved.

[0023] To control and adjust the rotary motion of the machining tool, the control device can, in particular, control a rotary drive. With regard to the vertical movement, the control device can control a vertical drive, in particular an actuating cylinder or a cable pull mechanism for vertical movement.

[0024] Regarding the control of the suspension quantity, one embodiment of the invention offers the advantage of using a control device to operate a suspension pump, which supplies the suspension to the hole. The suspension pump can be a positive displacement pump, particularly a peristaltic or screw pump. The control device is specifically connected to the pump drive, allowing the amount of suspension supplied to be adjusted directly based on the movement of the machining tool.

[0025] The invention further comprises a device for creating a foundation element in the ground from a soil mortar, which is characterized in that a control device is provided and designed with which the creation of the foundation element can be carried out automatically at least in sections, wherein at least one process parameter is entered into the control device as a preset value, and depending on the entered preset values, the control device sets a substantially vertical movement of the at least one rotary-driven processing tool.

[0026] The device is specifically designed for carrying out the previously described method according to the invention. The advantages described above can be achieved with this device.

[0027] In principle, the device for creating a foundation element can be designed in any suitable form. According to one embodiment of the invention, it is advantageous that the device is designed as a drilling rig in which the at least one rotatingly driven processing tool comprises a drilling tool which is driven to rotate about a substantially vertically oriented drilling axis. In a simple case, the drilling tool can be a continuous auger. Preferably, the drilling tool can have a removal device on its underside for removing soil material and, adjoining this above, further elements for conveying and / or mixing the removed soil material with a suspension, such as mixing paddles.Preferably, the drilling tool can include a central feed channel through which suspension can be fed from above and introduced into the surrounding borehole via at least one lower outlet opening and / or at least one lateral outlet opening along the central drill string.

[0028] In a further development of the invention, it is particularly preferred that the drilling device has several drilling tools arranged parallel to one another. This allows elongated boreholes to be created in a transverse direction in the ground. The individual drilling tools can be designed and coordinated such that the individual boreholes at least partially overlap to form an elongated bore slot.

[0029] Alternatively, according to one embodiment of the device according to the invention, it is preferred that the device be designed as a milling machine, in particular as a diaphragm wall milling machine, in which the at least one rotatingly driven machining tool has a milling wheel which is driven to rotate about a substantially horizontally oriented milling axis. Milling teeth and preferably also mixing elements are arranged on the outer circumference of a milling wheel hub, so that soil material can be removed by the milling wheel and mixed with supplied settable slurry to form the soil mortar. The slurry is preferably supplied close to the at least one milling wheel.

[0030] A particular advantage is that the milling machine has several milling wheels, especially two pairs of milling wheels arranged parallel to each other. Particularly with two such pairs of milling wheels on the underside of a support frame of a milling device, a roughly rectangular milled hole can be created when the milling device is lowered vertically into the ground, extending vertically downwards into the soil. The milling machine or milling device is thus designed as a so-called diaphragm wall cutter. By creating a series of correspondingly produced milled holes, a milled slot of virtually any length can be created in the ground, which is then filled with soil mortar to form a diaphragm wall.

[0031] The device can be stationary or mobile. In a mobile configuration, the device has a chassis, in particular a tracked chassis. Preferably, a mast can be arranged on a rotatably mounted upper structure, along which the machining tool can be guided so as to be vertically displaceable.

[0032] A preferred embodiment of the invention further comprises a suspension pump for supplying suspension into the hole, the suspension pump being controlled by the control unit. By means of the suspension pump, settable suspension can be fed from a surface of the soil, for example from a preparation plant or a reservoir, to the working tool in the soil. The control unit can, in particular, control both a rotary drive for the working tool and a drive for the suspension pump in a coordinated manner, so that a supply of settable suspension to the hole for producing soil mortar is always ensured as required. In principle, the control unit can also be connected to a preparation plant for preparing the suspension, which is located upstream of the suspension pump.In this way, the control unit can coordinate the entire device for creating a foundation element, the suspension pump and the preparation plant, so that the preparation and feeding of suspension into the ground is achieved in accordance with demand and / or capacity for the efficient production of a foundation element.

[0033] To illustrate the invention and the method according to the invention, the following preferred embodiments are given when constructing a foundation pile from a soil mortar.

[0034] To create the foundation element and form the necessary soil mortar, a setpoint of 980 l / m (liters per meter) of slurry is specified. A further process parameter is a maximum advance or extraction speed of 0.5 m / min (meters per minute) for the soil preparation tool, particularly a drilling tool. Another process parameter is a maximum delivery rate of 525 l / min (liters per minute) for the slurry pump. To ensure the required slurry volume of 980 l / m of the foundation element is achieved, the control unit sets the feed rate to 0.43 m / min. This prevents the maximum advance rate from being used, while still utilizing the maximum delivery rate of the slurry pump and ensuring the specified slurry volume per meter is reached.

[0035] In another embodiment, if the amount of suspension to be installed is only 450 l / m of the foundation element, a theoretically conceivable advance rate of 0.94 m / min would result with a maximum pump delivery rate of 425 l / min. However, the control unit sets the advance rate to 0.5 m / min, the maximum possible advance rate for the existing device, according to the preset value of 0.5 m / min, while the delivery rate is adjusted accordingly so that the target quantity is achieved.

[0036] The invention is further explained below with reference to preferred embodiments, which are shown schematically in the drawings. The drawings show: Fig. 1 A perspective view of a first embodiment of a device according to the invention, which is designed as a milling machine; Fig. 2 An enlarged detail view of the milling cutter of the device. Fig. 1 in a partially cut-away side view; Fig. 3 a schematic representation of the production of a foundation element in the ground with the milling machine of Fig. 2 Fig. 4 a schematic side view of the device of Fig. 1 during the creation of a foundation element in the ground; Fig. 5 a side view of another device according to the invention, which is designed as a drilling device; Fig. 6 an enlarged front view of the drilling tools which are used in the device of Fig. 5 are used; and Fig. 7 a schematic screen representation of a control device for the invention.

[0037] A device 30 according to the invention for creating a foundation element in the ground, which is specifically designed as a diaphragm wall cutter 50, is described in Fig. 1 The device 30 preferably comprises a carrier unit 32 with a chassis 33, which may in particular be designed as a tracked chassis. A superstructure 34 may preferably be arranged on the chassis 30, which may preferably be rotatably mounted about a vertical axis of rotation. A mast 35, which is substantially vertical during operation, may be attached to the carrier unit 32, in particular to the superstructure 34.

[0038] In the device 30, designed as a diaphragm wall cutter 50, a milling cutter 60 with a guide rod 52 is slidably arranged along the mast 35 as a soil removal device 40. This processing device 40 can have milling wheels 64 as a processing tool 42 for removing soil material, as described in more detail below in connection with Fig. 2will be explained.

[0039] The milling machine 60 according to Fig. 2 The frame 61 has a compact cross-sectional dimension, which is smaller than the cross-section of the milled hole produced by the milling cutter 60. Two adjacent plate-shaped bearing plates 62 are attached to the underside of the frame 61, and milling wheels 64 are mounted on the side surfaces of these plates.

[0040] The milling wheels 64 on a bearing plate 62 are each coaxial with each other, so that a pair of milling wheels is formed on each bearing plate 62. Along the outer circumference of each milling wheel 64, removal elements for material removal, in particular milling soil material, are formed in a generally known manner. The milling wheels 64 are driven in pairs by an associated drive 63, the two drives 63 preferably being arranged in the housing-like frame 61 of the milling machine 60.

[0041] The frame 61 is mounted on a guide rod 52, in which a suspension feed 54 runs for supplying a settable suspension. The tubular suspension feed 54 opens below the frame 61 between the two pairs of milling wheels 64. During milling operation, the soil material removed by the milling wheels 64 can thus be mixed directly in the area of ​​the milling wheels with the settable suspension flowing from the suspension feed 54 by the movement of the milling wheels, forming a soil mortar in situ. The radially projecting removal elements 66 can also directly serve as mixing elements for mixing the milled material with the suspension. Preferably, additional paddle-like mixing elements can also be arranged on the milling wheels 64.

[0042] Mixing can also be supported by plate-like scrapers 68, which are attached to the underside of the frame 61 and extend into the area of ​​the row-arranged removal elements 66 for scraping off adhering soil material. The rotational movement of the milling wheels 64 and the arrangement of the scrapers 68 particularly facilitate the conveyance of the mixture of milled material and suspension upwards past the frame 61 into a rear area of ​​the milling slot.

[0043] The process and procedure for forming a foundation element 8 in the soil 1 is shown schematically in the Figures 3 and 4further illustrated. The milling machine 60 with the rotating milling wheels 64 is lowered essentially vertically into the ground 1 via the guide rod 52, whereby a hole 3 is created in the ground 1 by the rotating milling wheels 64. The soil material removed during milling is mixed in situ in the hole 3 by the milling wheels 64 with settable slurry supplied via the slurry feed 54 to form a soil mortar 5, which flows past the frame 61 of the milling machine 60 and can thus fill and support the hole 3 in the ground 1, as can be clearly seen in Fig. 3 This is made clear.

[0044] Once a final depth is reached, further homogenization of the soil mortar 5 in hole 3 can be achieved, if necessary, by further vertical up-and-down movement of the milling cutter 60 within hole 3. After completion of the machining, the milling cutter 60 is withdrawn from hole 3, as described in Fig. 4 As shown. The ground mortar 5 in hole 3 can set to form the foundation element 8.

[0045] What next? Fig. 4 As can be seen, the milling cutter 60 can be guided by the guide rod 52 along the mast 35 on the carrier device 32 of the device 30.

[0046] A feed device 20, which may in particular include a suspension pump 22, supplies a substance via a feeder that is only partially in Fig. 4 The illustrated feed line 24 conveys a settable suspension, such as a cement suspension, from a reservoir (not shown) or a mixing and preparation plant to the upper end of the guide rod 52 and into the tubular suspension feeder 54. A control device (not shown) allows the vertical traverse movement of the milling cutter 60, the rotary movement of the milling wheels 64, and the delivery rate of the feeder 20 to be coordinated and controlled as required.

[0047] In connection with the Figures 5 and 6A further embodiment of the device 50 according to the invention is described, which is designed as a drilling rig 70. The drilling rig 70 can also preferably have a carrier unit 32 with a chassis 30, which can in particular be designed as a tracked chassis. A superstructure 34 can preferably be arranged on the chassis 30, which can preferably be rotatably mounted about a vertical axis of rotation. A mast 35, which is substantially vertical during operation, can be attached to the carrier unit 32, in particular to the superstructure 34.

[0048] A drill carriage 72 can be linearly displaceable and guided along the mast 35. A soil removal device 40 can be arranged on the drill carriage 72, which in the illustrated embodiment is designed as a drilling device 80 with three adjacent drilling tools 82. The drilling tools 82 can each be rod-shaped with a lower drill head for removing soil material and an adjoining conveying and mixing screw. Other configurations of the at least one drilling tool 82 are possible, for example, with separate conveying and mixing segments. The preferably three adjacent drilling tools 82 can create an elongated borehole 3 in the ground 1.

[0049] The soil material removed by the respective drill heads is conveyed upwards by the augers into a rear section of the hole 3. The drill bits 82 can be designed with a hollow inner tube through which a binding suspension can flow into a lower section of the drill bits 82 and out into the hole 3 via outlet openings (not shown). The suspension is supplied from the carrier unit 32 to the upper end of the drill bits 82 in the area of ​​the drill drives 83 via a hose-like supply line 24. Additional outlet openings for the suspension to exit in the area of ​​the augers can also be provided along the rod-shaped drill bits 82.

[0050] The excavated soil material, which is at least partially conveyed upwards by the drilling tools 82, can be mixed with the supplied settable slurry to form the soil mortar 5 by the rotary motion of the drilling tools 82 and, in particular, the augers. The soil mortar 5 thus produced in situ can harden in the borehole to form a desired foundation element 8.

[0051] According to Fig. 7 A possible representation 90 on a screen or a possible log graph is shown by way of example. This can be displayed and / or printed out by the control unit of the device 50 to a device operator on a screen of the machine during the execution of the method according to the invention. In a left first section 91 of the representation 90, a depth profile of the machining tool 42 over time can be shown. According to the representation 90 Fig. 7Specifically, it can be seen that the processing tool 42 is lowered from the surface to a depth of about 12 meters within approximately 50 minutes, largely uniformly, and then withdrawn from the final depth to the surface in the following approximately 20 minutes.

[0052] In the subsequent second section 92, the quantity of suspension introduced and incorporated into hole 3 at each depth can be displayed. The amount of suspension incorporated is shown as bar 95 in depth increments of 0.5 meters each, with the second section 92 referring to the introduction of suspension during the lowering of the working tool.

[0053] In contrast, in the subsequent third section 93, the amount of suspension incorporated in each depth section, which is also 0.5 meters each, when the processing tool is pulled, can be shown as bar 95.

[0054] Furthermore, the total amount of suspension incorporated over each depth section during sinking and withdrawal of the working tool 42 can be shown in the subsequent right-hand fourth section 94. It should be noted that in the Fig. 7 The quantity scale with respect to the X-axis differs in sections 92, 93 and 94, while the depth sections with respect to the Y-axis may be the same in sections 91, 92, 93 and 94.

[0055] The control system allows for the application of either the same amount of suspension in each depth section, or a predetermined amount of suspension that varies for each depth section, after sinking and extraction. Using the evaluation software, comparable graphs can also be generated for the tool revolutions performed per meter of element depth. During operation, the operator sees comparable diagrams for the suspension quantity and – depending on the process – also for the tool revolutions displayed on the machine's work screen.

Claims

1. Method for producing a foundation element (8) in the ground (1) from a soil mortar (5), having a ground removal device (40) with at least one rotationally driven processing tool (42), wherein - the at least one processing tool (42) is moved substantially vertically relative to the ground (1) and ground material is removed by the at least one rotationally driven processing tool (42) by forming a hole (3) in the ground (1), - a settable suspension is fed into the hole (3) and - the removed soil material remains at least partially in the hole (3) and is mixed in situ by the at least one rotationally driven processing tool (42) with the supplied suspension to form the soil mortar (5), - wherein the soil mortar (5) formed, after the at least one rotationally driven processing tool (42) has been withdrawn from the hole (3), hardens to the foundation element (8) in the ground (1), - wherein at least the vertical movement of the at least one machining tool (42), the rotary movement of the at least one machining tool (42), the supply of suspension and at least one dimensioning of the foundation element (8) represent method parameters, characterised in that the method is carried out automatically with a control device at least in portions, wherein at least one method parameter is entered into the control device as a default value, and in that at least one remaining method parameter is set and controlled by the control device in dependence on the at least one default value entered.

2. Method according to claim 1, characterised in that the method parameters comprise or additionally have at least one of the following parameters: rotational speed of the machining tool (42), direction of rotation of the machining tool (42), torque of the machining tool (42), number of rotations per depth feed of the machining tool (42), vertical movement speed or vertical feed force when lowering or pulling the machining tool (42), feed rate of suspension, feed quantity of suspension, or a combination thereof.

3. Method according to claim 1 or 2, characterised in that the at least one rotationally driven machining tool (42) comprises a drilling tool (82) which is rotationally driven about a substantially vertically directed drilling axis, wherein the hole (3) is produced by drilling.

4. Method according to claim 1 or 2, characterised in that the at least one rotationally driven machining tool (42) comprises a milling wheel (64) which is driven in rotation about a substantially horizontally oriented milling wheel axis, wherein the hole (3) is produced by milling.

5. Method according to one of claims 1 to 4, characterised in that at least one rotationally driven processing tool (42) has at least one removal element (66), by means of which soil material is removed and is comminuted, and / or has at least one mixing element through which the removed soil material is mixed with the fed suspension.

6. Method according to any one of claims 1 to 5, characterised in that a feed of suspension into the hole (3) and a movement of the at least one rotationally driven processing tool (42), in particular a rotation of the at least one rotationally driven processing tool (42), are entered into the control device as default values, and in that a substantially vertical movement of the at least one rotationally driven processing tool (42) is set by the control device in dependence on the default values entered.

7. Method according to any one of claims 1 to 6, characterised in that a vertical lowering of the at least one rotationally driven machining tool (42) is set by the control device, if this is not a default value, and / or a vertical pulling of the at least one rotationally driven machining tool (42) is set, if this is not a default value.

8. Method according to any one of claims 1 to 7, characterised in that a rotation of the processing tool (42) and / or a feed rate and / or a feed quantity of suspension is set by the control device, if these are not default values.

9. Method according to any one of claims 1 to 8, characterised in that the control device controls the feed device (20), in particular a suspension pump (22), through which suspension is fed into the hole (3).

10. Device for creating a foundation element in the ground (1) from a soil mortar (5), in particular according to any one of claims 1 to 9, with a soil removal device (40) with at least one rotationally driven processing tool (42), wherein the device (30) is configured, - to move the at least one processing tool (42) substantially vertically relative to the ground (1) and to remove ground material by means of the at least one rotationally driven processing tool (42) by forming a hole (3) in the ground (1), - to feed a settable suspension into the hole (3) by means of a feeding device (20), and - to mix, in situ in the hole (3) by the at least one rotationally driven processing tool (42), the supplied suspension with removed soil material to form the soil mortar (5), - wherein the soil mortar (5) formed, after the at least one rotationally driven processing tool (42) has been withdrawn out of the hole (3), hardens to the foundation element (8) in the ground (1), - wherein at least the vertical movement of the at least one machining tool (42), the rotary movement of the at least one machining tool (42), the supply of suspension and at least one dimensioning of the foundation element (8) represent method parameters, characterised in that a control device is provided and configured, with which the creation of the foundation element (8) can be carried out automatically at least in portions, wherein at least one method parameter is entered into the control device as a default value, and in that a substantially vertical movement of the at least one rotationally driven machining tool (42) is set by the control device depending on the default values entered.

11. Device according to claim 10, characterised in that the device (30) is configured as a drilling device (70), in which the at least one rotationally driven machining tool (42) comprises a drilling tool (82) which is driven in rotation about a substantially vertically directed drilling axis.

12. Device according to claim 11, characterised in that the drilling device (70) has a plurality of drilling tools (82) which are arranged parallel next to each other.

13. Device according to claim 10, characterised in that the device (30) is configured as a milling machine, in particular a diaphragm wall milling machine (50), in which the at least one rotationally driven machining tool (42) has a milling wheel (64) which is driven in rotation about a substantially horizontally directed milling wheel axis.

14. Device according to claim 13, characterised in that the milling machine has a plurality of milling wheels (64), in particular two pairs of milling wheels, which are arranged parallel next to each other.

15. Device according to any one of claims 10 to 14, characterised in that a suspension pump (22) is arranged for feeding suspension into the hole (3), wherein the suspension pump (22) is controlled by the control device.