FI123285B - Method and arrangement for soil consolidation in a state to be consolidated - Google Patents

Description

Method and arrangement for soil consolidation in a state to be consolidated

The present invention relates to a method for soil consolidation in a consolidation state, wherein the consolidation agent is fed from a feeder 5 to mixing means arranged on a soil consolidation unit, , horizontally and / or perpendicular to or substantially perpendicular to said vertical and 10 planes.

In addition, the present invention relates to an arrangement for soil consolidation in a consolidable state comprising a consolidation agent supply unit 15 having a consolidation agent mixing means and a feed container from which the consolidating agent can be fed to the soil mixing means, the consolidating agent mixing means is movable, optionally, at any point in the space to be reinforced in a vertical, horizontal and / or perpendicular or substantially perpendicular to said vertical and horizontal plane.

c \ j Soil consolidation devices having a ^ 25 boom-like consolidating agent supply unit are known in the art. At its other end, reinforcing agent mixing means known per se are provided. The other end c3 of the boom is typically connected to a relatively easy to move heavy vehicle such as a boom for moving a bucket or the like of a tractor or excavator. In this way, the excavator, and thus the reinforcing material supply unit, is relatively easy to bring into the space to be reinforced or otherwise adjacent to the soil to be modified. One such device is disclosed in US 4,652,180.

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Soil consolidation includes, but is not limited to, the following measures taken on the soil: Preparation of load-bearing slabs or pavements 5 by introducing into the soil alloying agents such as cement and the necessary chemicals to cure and stabilize the mix; stabilization, whereby additives are mixed with contaminated soil to cure the soil and bind the particulate matter to the soil thus stabilized.

10 The problem with such an arrangement is that the reach of the excavator or similar mixing means connected to the excavator is limited and very much determined by the dimensions of the excavator. Therefore, for example, stabilization or other soil tillage may be carried out on a supporting platform which bears the weight of the excavator 15 adjacent to the space to be strengthened. Thus, it is impossible to stabilize large areas at once, which may leave discontinuities in the soil to be stabilized, which may impair the stability of the stabilization. The discontinuity points are generally two contiguous points between the stabilized point at different times in the stabilized state, whereby discontinuous points may be formed between them, particularly in the vertical plane.

A further problem with the prior art arrangement is that soil consolidation, such as stabilization, may remain incomplete. That is, any point in the space c \ j may not be stabilized because when controlling the mixing means, the excavator may be left untreated by the user. To this end, i

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9 a reinforcing material supply unit (e.g., a stabilizer unit) is provided

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cv nowadays using a positioning device such as a gps

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On the basis of the information, the user of the reinforcing agent supply unit manually goes through the stabilization mode. This requires a great deal of experi- ence and a variety of knowledge from the user of the device in order to be sure that the reinforcement will be perfectly complete.

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In addition, JP 5919614 A discloses a typical arrangement for column reinforcement. It combines track-type vehicles sideways side by side with the implement mounted on it. The vehicles are placed on soft, reinforcing ground. This vehicle arrangement 5 is not suitable for traveling on very soft ground, which limits the export of the machine to the required position in the space to be consolidated.

It is an object of the present invention to provide a method and arrangement for removing or substantially reducing the aforementioned drawbacks.

To achieve the aforementioned purposes of the invention, the present method is characterized in that the carrier bridge of the transfer means extends beyond the space to be reinforced, and the first transfer means for moving and the reinforcing material supply unit with the mixing means with the second transport means perpendicular to or substantially perpendicular to said plane passing through said vertical and horizontal planes, and pi-c \ j widening width, δ cvj 25 io In addition, for the purposes of the above-mentioned invention,

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for an arrangement employing the method of the present invention characterized in that the transfer means include a support bridge disposed extending over the space to be reinforced, and first transfer means arranged in connection with the support bridge for moving the reinforcing agent mixing means vertically and / or horizontally, and means for supporting the support bridge. for moving the support bridge and reinforcing material supply unit 4 and mixing means perpendicular to or substantially perpendicular to said plane passing through said vertical and horizontal, and to correspond to the longitudinal width of the stabilization bracket bridge.

Compared to the prior art, the method and arrangement of the invention provide the advantage that the mixing means can be introduced in a simple manner at each point of the entire space to be reinforced. The application of the method and arrangement does not require any particular experience or other specialized knowledge of the user, since control is entirely within the basic coordinate system, whereby the position coordinates of the reinforcing agent mixing agent are always known. Therefore, it is also known with certainty which part of the space to be reinforced has been reinforced and which has not yet been reinforced. Further, the transfer means included in the method and arrangement of the present invention enable so-called. layer-by-layer reinforcement, in which the entire space to be reinforced can be stabilized in the height (vertical) direction one layer at a time. Vertical discontinuities are thus avoided.

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Preferred embodiments of the present invention are disclosed in the dependent claims.

cm The invention will now be further described with reference to the accompanying drawings, in which: 00 cp

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Fig. 1 shows the transfer means according to the present invention for stabilization for moving the unit in stabilization mode, and o m

Fig. 2 shows an alternative arrangement o applying the method of the present invention, which differs from Fig. 1 only in that the support bridge 2 is not supported at one end by a support.

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Figure 1 thus shows an arrangement applying the method. In this exemplary embodiment, the arrangement includes a stiffness unit 10 (stabilized space) provided with reference numeral 4 and transfer means of the stabilization unit 4 denoted by reference numeral 1.

The stabilization space is designated by reference numeral 10. Here, the stabilization space 10 is delimited by a bearing ground 11 and 12, as well as a bearing ground not shown herein and a rear wall which may also be a bearing ground. The spaces 10 may be stabilized and may also be adjacent to each other, such as 10,10b, and may be separated from each other either by naturally harder or load-bearing soil or by artificially introduced or locally-supported load-bearing material 11, e.g., cast concrete slabs or concrete slabs.

The stabilizer (reinforcing agent) is preferably fed from the feed vessel 9b brought in proximity to the transfer means 1 via the feed pipe 8 to the stabilizer mixing means 7.

The following is a more detailed description of the transfer means shown in Figure 1.

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Preferably, the transfer means include a support bridge 2 extending over the stabilization space 10, first transfer members 3 and second transfer members 5, which in turn are movable in relation to the support bridge 2. In turn, the support bridge 2 is supported by second transfer members 5 against the ground. between the two stabilizing states 10 and 10a

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9 against the bearing material 11 formed.

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The second transfer means 5 are disposed in the lower part of the support bridge 2 and are arranged here in the region of both ends of the support bridge 2, in this case g 30 one at each end. Further, the support bridge 2 is preferably formed of o g modules 2a which can be longitudinally connected to one another.

In this case, the length A of the support bridge 2 and the distance A between the other transfer members 5 may be adapted to correspond to the longitudinal width of the support bridge 2 of the stabilizing space 10. Modules 2a are also easy to transport on site for assembly.

It should be noted that the second transfer means 5 are preferably arranged to be movable or movable with respect to the support bridge 2, for example by means of non-shown guides arranged at the lower part of the support bridge 2. In this case, the arrangement of Fig. 2 can be applied in which the support bridge 2 is supported at one end by two transfer means 5 to the ground 11, whereby the other end provided by the stabilization means 4 and the transfer means 3 is supported above the stabilization space 10. The supported end of the support bridge 2 may be provided with a counterweight (not shown) in a manner known from crane booms, or it may be supported on a rail fastened to the ground.

Typically, the support bridge 2 may be formed about 20-40 m long, but depending on the structure and application of the support bridge 2, the length may be different, e.g., 15 m or 50-60 m. The second transfer members 5 are preferably transport trolleys and / or guides.

First displacement members 3 are provided in connection with the support bridge 2 for moving the stabilizer unit 4 and thus also the stabilizer mixing means 7 vertically and / or horizontally (here, in the direction defined by the longitudinal plane of the support bridge, which may practically deviate horizontally).

w 25 i oo o Other transfer means include a transfer trolley 5. The transfer trolley 5 is arranged

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cv along the earth support bridge 2 over the stabilization space 10 (this direction of motion is indicated by the double arrow x in the figure). Also, this transfer carriage 5 is arranged to run preferably on rings, rollers and / or guides 6.

The stabilization unit 4 is arranged in connection with a transfer carriage 5 belonging to the second transfer means. The stabilizing unit 4 includes an elongated body 4a arranged to move in connection with the first transfer carriage 3 in a vertical direction e.g. This direction is indicated by the vertical double arrow y in the figure. Thus, the stabilizer mixing means 7 are arranged to move by means of the first displacement means 3 in the x- and y-5 directions (horizontal and vertical) and by the second transmission means 5 in a direction perpendicular or substantially perpendicular to said plane passing through the x and y directions. is perpendicular or substantially perpendicular to the paper plane in the z direction). The mixing means 7 can be moved individually or simultaneously in each of the above directions. However, it is preferred that the horizontal displacement direction is the same as the displacement direction of the support bridge 2, whereby the horizontal displacement direction can be selected to remain substantially the same in different positions of the support bridge 2. The length B of the body 4a of the stabilization unit 4 is selected such that the mixing means 7 at the lower end of the body 4a can be introduced to the desired depth relative to the ground. The length B of the hull is typically 2 to 12 meters, which also substantially corresponds to a depth downwardly of the mixing means relative to the ground level.

The stabilizer is supplied from a feed vessel 9b provided in the feeder carriage 9, which is preferably arranged on a movable carriage such as a roller carriage or a truck trailer 9a or the like. The supply is known in itself by means of compressed air generated by the compressor in the supply carriage 9. It is preferable that the feed pipe 8 is arranged along the length c1 to the transport means 1, in this case 25 transferred to the supporting bridge 2 belonging to the transport means 1.

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One advantage of the method and arrangement of the invention is that the mixing | the means being released to process the material g to be treated by the transfer means 1 at any point in the stabilization space 10 and the position to be treated is not dependent on the progress of a treatment such as stabilization from the edge of the space 10 as before. This inventive feature can be applied e.g. by stabilizing the space 1 by the so-called layer-by-laeyer method, in which the stabilization space stabilization 8 can be done layer by layer, whereby no vertical discontinuities occur. In the figures, these layers are designated by reference numerals a, b, c and d.

The invention also achieves accurate pillar stabilization. In column stabilization, the space to be reinforced is a set of pre-defined positions to be reinforced, each of which requires only vertical movement, but between which backward-dimensioned motions are required in horizontal coordinate system. If necessary, mixing tools can be changed to suit column stabilization.

10 The system can be automated so that the equipment can be driven without any occupation. For example, mirrors are mounted at both ends of the bridge 2 and control is performed by known PLC control which obtains control information by means of distance measurement and laser utilizing said mirrors.

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The present invention is not limited to the exemplary embodiment shown, but can be applied in many ways within the scope of the appended claims. Although the method and arrangement for soil stabilization have been applied in the embodiments, the invention is not limited thereto, but generally relates to the consolidation of the space to be consolidated.

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Claims (7)

A method for stabilizing soil in a space (10) to be stabilized, in which method stabilizing substance is measured from a feeder vessel (9b) into the ground with mixing means (7) arranged on a feeding unit (4) for the stabilizer. the blank, the stabilizer blank feed unit (4) is placed in conjunction with sealing means (1) and the stabilizer blank feed unit (4) arranged for the stabilizer blank is moved with the displacer (1) selectable space in the space (10) to be stabilized, vertical (y), horizontal (x) and / or in a direction perpendicular or substantially perpendicular to a pane that travels through said vertical and horizontal direction, characterized in that a support bridge (2) associated with the displacement means (1) is positioned so that it extends over the space (10) to be stabilized and adjacent to the support bridge the first displacement is placed. means (3) for moving the mixing means (7) for the stabilizer blank vertically (y) and / or horizontal (x), and on the displacement means (1) are placed second displacement means (5) and with the other displacement means (5) the support bridge (5) is displaced. 2) and the feeding unit (4) of the stabilizer with mixer (7) in a direction which is perpendicular or substantially perpendicular with respect to a pane passing through said vertical (y) and horizontal (x) direction, and that the other offset means (5) are arranged on both ends of the support bridge (2) to support the support bridge (2) against the supporting material (11) or ground (12) cm, the distance (A) of the other displacement members (5) being apart from each other. fitted to correspond to the width of the stabilizer compartment (10) support bridge (2) 9. longitudinal direction. CO CM Method according to claim 1, characterized in that the first g and / or second displacement means (3, 5) include a displacement wagon or g displacement wagons which move by means of wheels, rollers and / or conductor I (6). Method according to claim 1 or 2, characterized in that an elongated stabilizer supply tube (8) is placed between the feeding vessel (9b) and the mixing means (7), which moves part of its longitudinal distance adjacent the closure means (1). ). 5 4. Arrangements for stabilizing soil in a space (10) to be stabilized, the arrangement comprising a stabilizer supply unit (4), in which stabilizer blending agent (7) and a feeding vessel (9b) are provided , from which vessel stabilizer can be measured into the ground with mixing means (7), displacement means (1) located in conjunction with the stabilizer blank feed unit (4) with which the stabilizer blank feed unit (4) is arranged the stabilizing agent blending means (7) are removably selectable at any height in the space (10) to be stabilized, vertical (y), horizontal (x), and / or in a direction perpendicular or substantially perpendicular to a pane. said vertical and horizontal direction, characterized in that the displacement means (1) include a support bridge (2), which is positioned so that it extends over the space (10) to be stabilized, and in a first displacement means (3) for moving the mixing means (7) for the stabilizer blank vertically (y) and / or horizontal (x) and arranged in conjunction with the support bridge (2) displacement means (5) for displacing the support bridge (2) and the feeding unit (4) for the stabilizer and the mixing means (7) in a direction which is perpendicular or substantially perpendicular with respect to a pane passing through said vertical (y) ° and road direction (x) direction, and the other displacement means (5) are arranged on both ends of the support bridge (2) to support the support bridge (2) against c3 bearing material (11) or ground (12), wherein the other closure means | the distance (A) from the web (5) from each other is adapted to correspond to the width of the longitudinal support bridge (2) of the stabilization space (10). S 30 01 o Arrangement according to claim 4, characterized in that the first and / or second sealing means (3, 5) belong to a displacement carriage or displacement carriages which move by means of wheels, rollers and / or conductors (6). Arrangement according to claim 4 or 5, characterized in that between the feeder vessel (9b) and the mixing means (7) is placed an elongated stabilizer supply tube (8), which extends part of its longitudinal distance in connection with the displacing means ( 1). Arrangement according to any of the preceding claims 4-6, characterized in that the supply vessel (9b) is located in a separate movable carriage (9) with means for pressurizing air for supply of stabilizing means by means of compressed air. CM δ CM CO o CO CM X cc CL o m δ σ> o o CM