DE19822290A1 - Method of vibration compression of cohesive and non-cohesive materials, e.g. loose rock, achieves an optimal vibration process - Google Patents

Abstract

The method involves adding media with a process-controlled vibrator (6). The delivered medium is used to both drive the vibrator and to vary the compressibility of the compression material. The added material can be a liquid and/or gas. The achieved degree of compression is continuously measured and fed to the process controller. An Independent claim is also included for an arrangement for implementing the method.

Description

The invention relates to a method and a device for vibrating pressure and vibrating stuffing of binding and non-binding compaction material, in particular of Loose rock, with the note specified in the preamble of claim 1 or 10 to paint. Such methods and devices are for example in the Offenle publication DE 196 28 769 A1 and in the company publication: Bauer, Schroben hausen "Foundation and soil compaction with deep vibrators". Doing so a process-controlled vibrator, as described for example in DE 196 28 769 A1 ben is in the compaction material with the addition of media (gas, liquid) drive. The provision of energy for the vibrator drive (electrical, hydraulic) and for the supplied media is done separately. It also describes how to Optimizing the way the vibrator works, using energy for the vibrating process on the desired degree of compaction of the material to be compacted is voted. The vibration frequency is controlled by a built-in frequency converter changed so that this coincides with a natural frequency of the continuum mung is brought.

The volume flow, the composition (gas, liquid) and the pressure of the Media supplied are regulated during the shaking process.

Disadvantages of the vibrators and vibrating methods described above are that the energy Feeder for the vibrator drive and for the volume flows to be compressed different compressed media (gas, liquid) from different sources. This is the optimization of the shaking process with one process-controlled vibrators significantly more difficult. The regulation of the vibrating frequency and the regulation of the volume flows of the supplied media and the coordination on the material to be compacted happens in different energy flows men.

The task is therefore to specify a method or a device with which eliminates the disadvantages mentioned above and the vibrating process is optimized.

The object is achieved with a method according to claim 1 or a device Claim 10 solved. Further refinements according to the invention are in the Subclaims specified. By optimizing the way the vibrator works the energy used for the vibrating process on the desired compaction degree of the cohesive and non-cohesive compaction material to be compressed Right. The optimization of the operation of the vibrator is achieved in that the Volume flow of the supplied media (gas, liquid) both to drive the Vibrators used as well as dosed on the compaction material. As a vibrator drive are machines based on the static principle (e.g. screw motors) or work according to the dynamic principle (e.g. turbines) and with liquid and / or gas operated, used.

The volume flows of the supplied media are from above ground, e.g. B. by a Flushing pump unit, liquid and / or, for. B. by an air compressor, gas generated and fed to the vibrator suspension. The volume flows of the liquid and / or the gas can be regulated, shared with appropriate facilities and / or be merged.  

By regulating the volume flows, the frequency of the vibrator becomes simultaneous varies. This enables the vibrating frequency to match the natural frequency of the compaction agree good things. The mechanical waves in the compaction material by vibration sensors, these being geophones, and the process control of the vibrator. By tracking the frequency of the vibrator that can vibrate to the respective natural frequency of the compaction material System are kept in constant resonance.

Partial flows of the media (liquid, gas) are on the vibrating plate and / or in the Annular space directed between the nozzle tube and the wall of the vibrating hole. This will the willingness of the material to be compacted in general has a considerable influence. The regulation of the vibrating frequency and supply of partial flows of the media (Liquid, gas) on the compaction material are now from the volume flows directly dependent on the media supplied above ground. Optimizing the vibrator process is thereby significantly qualified.

The dosing of fluids, the combination of gaseous and liquid Media for a volume flow is possible and depends on the type of the compaction material and the vibrator drive used.

The invention largely contributes to the automation of the vibrating process.

Embodiment

The invention will be explained below using an example. In addition to that associated drawings show:

Fig. 1 principle of a process-controlled vibrator,

Fig. 2 equipment for operation of the process controlled vibrator,

Fig. 3 Schematic representation of the peripheral devices for a frequency-controlled operation of the process-controlled vibrator.

The implementation of the method for vibrating pressure and vibrating plug compression of binding and non-binding compaction material ( 29 ) is realized with the use of the equipment shown in FIGS. 1, 2, 3.

The unbalance ( 11 ) of the vibrator ( 31 ) is driven by a hydrostatic drive, e.g. B. a screw motor ( 6 ) or by a hydrodynamic drive z. B. a turbine. When using a screw motor, a cardan shaft ( 8 ) is required. The adaptation of the possible engine speeds to the required speeds of the unbalance ( 11 ) is carried out, for example, by a planetary gear ( 9 ) which, for. B. is connected via a clutch ( 10 ) to the unbalance ( 11 ). The vibrator housing is equipped on the outside with stabilizers ( 12 ) and stabilizing ribs ( 7 ). Via the media outlets ( 13 and 4 ), for example in FIG. 1, they emerge towards the material to be compacted and / or into the annular space ( 30 ). An elastic connecting member ( 5 ) connects the vibrator ( 31 ) to the vibrator suspension ( 26 ). To operate the engine, a pressure line ( 2 ) and a return line ( 1 ) must be connected to the vibrator. Furthermore, the media liquid and / or gas are supplied via appropriate media lines ( 3 ). All feed and return lines are guided in coordination with the carrier device for the vibrator ( 35 ) as flexible lines ( 18 , 19 , 20 , 22 , 23 ) for the vibrator suspension, which also contains a device for connection to the carrier device ( 25 ).

A piston pump ( 16 ) is used to drive the motor ( 6 ) (e.g. screw motor) and draws the medium out of the suction tank ( 14 ) via the suction line ( 15 ). A volume flow can be branched off from the pressure line of the pump ( 16 ) via a control valve ( 17 ) via the pressure line ( 20 ) in order to change the willingness to compress the material to be compressed ( 29 ). A further pump can be added using a separate pump ( 21 ) and an air compressor ( 24 ).

The data recorded during operation of the vibrator by the vibration sensors ( 34 ) are registered and evaluated by the electronic data processing and control system ( 27 ).

The necessary addition of the rolled material ( 33 ) takes place from the surface of the compacted material ( 28 ) z. B. over the annulus.

Reference list

1

Return line from the engine

2nd

Pressure line to the engine

3rd

Media lines

4th

Media outlets

5

Elastic connecting link

6

Drive of the vibrator (e.g. screw motor)

7

Stabilizing ribs

8th

PTO shaft when using a screw motor

9

Planetary gear

10th

clutch

11

Unbalance

12th

stabilizer

13

Media outlets

14

Suction tank

15

Suction line

16

Piston pump

17th

Control valve

18th

Flexible return line

19th

Flexible pressure line

20th

Flexible pressure line for adding liquid

21

Pump for adding liquid

22

Flexible pressure line

23

Compressed air hose

24th

Air compressor

25th

Connection to the carrier device

26

Vibrator suspension

27

Electronic data processing and control system

28

Surface of the compaction material

29

Compaction material

30th

Annulus

31

Jogger

32

Vibration hole sole

33

Rolly material

34

Vibration sensor

35

Carrier device

Claims (14)

1. Process for vibrating pressure and vibrating plug compaction of cohesive and non-cohesive compaction material, in particular loose rock, with the addition of media, with a process-controlled vibrator, characterized in that the media supplied are used both to drive the vibrator and to change the compaction readiness of the compaction good be used. 2. The method according to claim 1, characterized in that the supplied Media are liquid and / or gas. 3. The method according to any one of claims 1 and 2, characterized in that the reached degree of compaction of the compaction material during compaction process is permanently determined and transferred to the process control. 4. The method according to any one of claims 1 to 3, characterized in that the Volume flows and / or the pressure of the media supplied liquid and / or Gas to be matched to the vibrating process. 5. The method according to any one of claims 1 to 4, characterized in that the mechanical energy supplied to the compaction material to the required Degree of compaction is currently coordinated. 6. The method according to any one of claims 1 to 5, characterized in that the mechanical energy supplied to the compaction material via the volume flows and / or the pressure of the media liquid and / or gas is regulated. 7. The method according to any one of claims 1 to 6, characterized in that about the volume flows and / or the pressure of the supplied media the vibrators frequency is regulated. 8. The method according to any one of claims 1 to 7, characterized in that the seismic waves forced by the shaking process in the compaction material received by vibration sensors and by a registration and Evaluation unit are registered and evaluated, whereby at least the Vibration frequency of the vibrator varies and to the respective natural frequency of the Compaction material is tracked. 9. Device for performing the method according to one of claims 1 to 8 with a process-controlled vibrator, characterized in that for the drive of the vibrator uses machines that are based on the static (e.g. screw moto ren) or the dynamic principle (e.g. turbines) and work with liquid and / or gas operated. 10. Device according to claim 9, characterized in that the volume flows the supplied media liquid and / or gas are regulated. 11. The device according to claim 9, characterized in that the pressures of the fed media are regulated.   12. Device according to one of claims 9 to 11, characterized in that the device contains measuring devices which are used during the compression process ses permanently determine the degree of compaction of the compaction material. 13. Device according to one of claims 9 to 12, characterized in that the data of the temporary degree of compaction during the vibrating process in the process control are transferred. 14. Device according to one of claims 9 to 13, characterized in that the vibration sensors are geophones.