DE102013210341A1 - sealing system - Google Patents

Abstract

The present invention is concerned with the sealing of sole and slope areas of a body of water in a water-bearing state. In order to provide a seal which is suitable for different flow rates, a sealing system (10) has a working platform (12), which is arranged above a water area (24) of a water area (26) to be sealed. A first feeder (14) removes webs of a flexible concrete formwork sheath (30) on a work surface (28). The webs are connected by a connecting device (16) to a continuous sealing surface (33). A lowering ramp (18) is fixed to the work platform with a first end (34) and may be lowered toward the body bottom by a second end (36) opposite the first end (36) to slope obliquely in the lowered state (P1) to extend down. The lowering ramp supports the sealing surface when it is introduced into the water and when it is deposited on the bottom of the water. A second feeder (20) inserts a concrete material into cavities in a central area (38) of the concrete formwork shroud on the lowering ramp to lower the sheathing casing over the lowering ramp to rest on a body surface (40). The work platform is moved along the water with a movement device (22).

Description

The present invention relates to the sealing of sole and slope areas of a body of water in a water-carrying state, and in particular relates to a sealing system and a method of sealing.

An example of a body of water are channels that are used, for example, to carry or transport water, for example, to supply water to a hydroelectric power station. Channels are also known for other purposes, for example as irrigation channels or as drinking water transport channels. In addition, canals are also known as waterways. In order to avoid or reduce loss of water, for example, by seeping into the adjacent soil, or seals are provided in the sole and slope area. For the subsequent sealing, for example, for remedial purposes, seals are applied, for example, on the bases after the area, for example, at channels, drained. However, it has been shown that the draining is associated with a lot of effort. Therefore sealing methods are used in which the water does not have to be drained. For example, is from the DE 20 2008 014492 U1 a method is known in which a channel seal is first composed outside of the water of individual segments and then lowered by means of a generated differential water level into the water on the surfaces to be sealed. The lowering by means of a differential water level means, however, with larger flow rates, and even with fluctuating flow rates, that additional measures must be provided to provide a bridging, z. B. in the form of a bypass.

There is therefore a need to provide a water-tight seal of a body of water suitable for different flow rates.

This object is achieved by a sealing system for sealing sole and slope areas of a water body in a water-bearing state and a method for sealing sole and slope areas of a water body in the water-bearing state according to one of the independent claims. Exemplary embodiments are presented in the dependent claims.

It should be noted that the features and advantages described below apply to both the sealing system and the method. Features, relationships and beneficial effects and aspects described in connection with the sealing system also apply to the method, and vice versa.

According to the invention, a sealing system is provided for sealing sole and slope areas of a body of water in a water-bearing state. The sealing system includes a work platform, a first feeder, a connector, a lowering ramp, a second feeder, and a moving device. The work platform is arranged above a water area of a water body to be sealed and comprises a work surface. The first feeding device is designed to apply webs of a concrete formwork envelope to the work surface, wherein a sheet-like flexible concrete formwork cover with a plurality of cavities for receiving a concrete material is provided as the concrete formwork cover. The connecting device is designed to connect the plurality of webs of the concrete formwork shell to a continuous sealing surface. The lowering ramp is attached at a first end to the work platform and lowerable with a second end, which is opposite to the first end, in the direction of the body of water. In the lowered state, the lowering ramp extends from the working platform obliquely downwards in the direction of the water bottom. The lowering ramp is designed to at least partially support the sealing surface when it is introduced into the water and when it is deposited on the bottom of the river. The second feeding device is designed to introduce a concrete material into at least a part of the cavities in a middle region of the concrete formwork cover located on the lowering ramp for a successive lowering of the concrete formwork covering over the lowering ramp to the resting on a body surface. The movement device is designed to move the work platform along the water body.

The term "water" refers in particular to canals, but also to other aquiferous structures, and in particular to stagnant water, for example, water storage tanks. The term "waters" also refers to port areas.

The provision of a concrete formwork envelope and the subsequent filling of the cavities of the concrete formwork envelope and simultaneous lowering and laying on the surface to be sealed means z. B., that the water in its actual function, namely to lead water, during the sealing is only minimally limited. Since the concrete shuttering shell is provided on the work platform and there the connection of individual tracks, or segments to a larger area is made, a continuous sealing surface can be generated, which is then introduced into the water. The provision on the work platform has the advantage that the joining of individual segments in a controlled area above the water takes place, so that connecting individual segments at the base of the water body is no longer required. Filling the concrete formwork envelope with concrete material means, on the one hand, that the concrete formwork shell is lowered to the bottom of the water body and, on the other hand, that the concrete formwork shell is also securely held there due to its own weight, or permanently provides a secure seal there. Here, the concrete formwork envelope and the still liquid or at least viscous concrete during application can adapt to any contours of the base and then harden in this adapted form.

By "work platform" is meant a surface that allows working, for example, assembling webs into a large seal and filling the concrete formwork envelope. The work platform is designed, for example, floating. The working platform is in another example with adjustable in height supports on the river bottom, z. B. at a channel on the channel bottom, or the waters or channel bevels supported. In another example, the work platform is formed on the lateral water or canal shore areas, z. B. as a transverse bridge platform that rests on waters or Kanalböschungskronenbereichen.

The "first feeder" includes, for example, storage devices for storing webs of the concrete formwork envelope, e.g. B. mounted on rollers tracks. The first feeding device may for example comprise the bearing device or be connectable to a bearing device, for. B. with a mobile storage device, for. B. on a truck or trailer on the shore area, or even on a ship or pontoon floating on the water.

In one example, the feeder provides webs of the concrete formwork sheath. For example, the first feeder removes webs of the concrete formwork envelope.

The "connection device" may be a work surface area that serves to interconnect webs, e.g. B. to be welded, sewn or glued. The connection takes place outside the water level and also without filled support material.

In one example, the connection device interconnects a plurality of webs of the concrete formwork shell. The webs are connected to a continuous sealing surface, which is adapted to the dimensions of the watercourse, in particular the channel cross section. For example, the sealing surface has a width which corresponds to the base surface length of the water cross section, z. B. the channel cross section corresponds, d. H. the length of the lateral slopes or banks and the length along the waters / channel base across a waterway / channel direction.

In one example, the lateral segments of the sealing surface are rolled up after being joined to the central region.

In one example, the sealing surface located on the work platform forms a continuous seal or area with the already laid areas. With the connecting device can thus assemble a continuous seal. The connection is made by connecting the individual tracks together outside the water.

The "lowering ramp" refers to a device having a tiltable surface on which the material in the form of the concrete formwork sheath can be unfolded, and also at least partially filled, from the area of the working surface downwards. The lowering ramp extends in the flow direction, for example from above obliquely downwards. In one example, the lowering ramp is held at its lower end, or the lower region, with buoyancy means, and a space is provided between the lower end and the waterway or channel bottom.

In one example, a partial region of the continuous sealing surface is deposited on the lowering ramp.

In one example, the lowering ramp is formed with a smooth surface that forms a slide for the successive insertion of the concrete formwork sheath. The concrete formwork shell can be at least partially filled with support material slide down the slope in the direction of the body of water or canal. The smooth surface is formed for example by an exchangeable plastic sealing strip. In another example, the smooth surface is formed by metal plates or formwork panels.

The "second feeder" refers to a device by means of which a carrier material can be introduced into the concrete formwork sheath. As a support material, for example, concrete is provided. In one example, the material bentonite is provided for the concrete material. The second delivery device can In this case, for example, have a bearing device or be connectable to a storage device. The second delivery device may also be configured as a pumping device to convey material from a deposit to the filling location, e.g. B. as a concrete pump or cleaning pump. The concrete material may also be referred to as a support material or filler material or sealing material.

In one example, the second delivery device delivers a support to the sealing surface and inserts the support into the concrete formwork sheath, i. H. in the trained with appropriate recordings sealing surface. For example, the second feeder feeds bentonite and introduces bentonite into the concrete formwork envelope.

The term "concrete material" is also understood as meaning other bulk materials which can be introduced as bulk material and which in the filled state have a composite effect (sealing effect) which is greater than the composite action as bulk material. The term "concrete material" is also understood to mean bulk material that can be introduced into the casings.

The term "concrete formwork envelope" refers to a mat-shaped material which has, similar to a quilt, at least one intermediate space which can be filled with a filling material as a cavity. To increase the stability of the cavity may have subdivisions. Concrete formwork covers are known as construction elements for building with water, z. B. for the attachment of dams. There are two interconnected, z. B. woven fabric provided, z. As synthetic fabrics, for example, serve as formwork for the introduced concrete or mortar. In the filled and set condition, the mat-shaped concrete formwork envelope is, for example, of a relatively uniform thickness. The concrete formwork sheath serves as a lost formwork. In another example, two spaced apart walls delimiting the cavity are connected to connection areas, e.g. B. bulkheads or spacers made of tension elements and / or pressure elements.

As concrete formwork casings Incomat ^® mats from Huesker Synthetic GmbH are used in one example. Of course, other products from other manufacturers can be used.

As a concrete formwork envelope, in another example, two sealing sheets (KDB, plastic sealing sheets) are locally bonded together to form voids therebetween.

The "movement device" refers to a device that allows the entire work platform to be moved, or at least the part with the ramp and, if there is a concrete formwork cover that is already connected to the concrete formwork cover in the water, also the adjoining area of the work platform.

By way of example, the movement device is designed to move the working platform along the body of water for a successive sealing of the sole and slope areas in a water-conveying state.

In one example, the moving device is a winch device with ropes, chains or other pulling elements that can be connected to fixed points on the shore or the water / canal bottom, so as to increase the working platform e.g. B. against the flow direction of a water to be rehabilitated, z. B. a channel to draw. In another example, winches are temporarily anchored on the shore, which the work platform along the water body, z. B. along the channel. In a further example, a mobile substructure is provided as a movement device, with which the working platform can be supported and moved on the bottom of the water or the channel bottom, the lateral slopes or the lateral bank areas.

The water is, as already mentioned, for example, a channel. The water direction is then a channel direction, the river bottom a channel bottom, the water bottom a channel bottom, and the water surface area a channel base.

For example, in a channel, the first end of the lowering ramp is opposite the second end in the channel direction.

The term "body of water" includes sole areas and lateral embankment areas. The surface of the river bed is also called the water bottom.

The term "above a water area" refers to providing a dry area of the work surface, for example, to apply material and also to perform the appropriate work. In this case, the surface can actually be arranged above the water level, or also, in the case of lateral enclosures, at least to a certain extent below the surrounding water level. In any case, the work platform is located in the upper part of the water level.

According to one example, the concrete formwork sheath has lateral areas extending in Water direction connect laterally to the central area, and are rolled up during the lowering of the lowering ramp.

This makes it possible to provide a transversely enlarged seal above the water level, which in a reduced area when introduced into the water, i. H. when lowering, the water flow is impaired.

According to one example, after laying the central area, the lateral areas can be rolled out under water, and the concrete formwork sheath can also be filled with concrete material in the lateral body water areas for sealing lateral bank slopes of the water body.

By the term lateral slope of the bank, for example, the lateral body water basins, i. H. the lateral embankment areas of the water body, such as a channel understood.

According to one example, the first end of the lowering ramp is held temporarily releasably on the work platform and is at least vertically movable in the released state. The lowering ramp can be lowered into the water with its first end and can be erected again with the first end and can be reconnected to the working platform.

The lowering ramp can be aligned, for example, in the water parallel to the flow direction, z. B. to minimize the water / channel cross-section, for example, for situations in which an increased amount of water through the water, z. B. should flow through the channel. The lowering ramp can be, for example, lay flat on the bottom of the water, for example, the channel bottom, z. B. for a rest phase of the work, for example, overnight.

For example, the lowering ramp is lowered to a state in which it is substantially aligned approximately parallel to the water flow. The term "approximately" includes, for example, a range of a maximum of ± 30 °, z. B. ± 15 °, or a maximum of ± 10 °, or a maximum of ± 5 °.

In one example, the working area in the longitudinal direction of the body of water, such as the channel, is at least as long as the lowering ramp is wide.

The lowering ramp can continue to be attached to the work platform when lowering the upper end, z. B. be suspended, for example, be articulated connected. The lowering ramp, d. H. Work ramp can also lower and erect itself.

According to one example, for a temporary interruption of the sealing process, part of the not yet laid concrete formwork shell remains on the lowering ramp and is temporarily fixed on the lowering ramp. The lowering ramp can be lowered with the concrete formwork sheath into the water in the direction of the water bottom.

In one example, the lowering ramp with the Betonschalungshülle on the water bottom, z. B. channel bottom are stored.

In one example, the not yet laid concrete formwork sheath is connected before lowering with ropes to lift or pull at least one not yet laid area of the concrete formwork sheath from the water to the work platform.

According to one example, floating bodies are provided on the lowering ramp, and for lowering the lowering ramp at least a part of the floating bodies is floatable. According to one example, the lowering ramp is adjustably held on the working platform in its inclination.

According to one example, drainage devices are provided on the work platform with which the filled concrete formwork cover can be lowered in a controlled manner.

As discharge devices, for example, rope winches are provided on the working platform at an end region which is arranged opposite the lowering ramp.

According to one example, the body of water is a canal, a waterway and / or a harbor area.

• a) Ausbringen von mehreren Bahnen einer Betonschalungshülle auf einer Arbeitsfläche, wobei die Arbeitsplattform oberhalb eines Wasserbereichs eines abzudichtenden Gewässerbereichs angeordnet ist und eine Arbeitsfläche umfasst, und wobei als Betonschalungshülle eine bahnenförmige flexible Betonschalungshülle mit einer Vielzahl von Hohlräumen zur Aufnahme eines Betonmaterials vorgesehen ist;
• b) Verbinden der mehreren Bahnen der Betonschalungshülle zu einer Abdichtfläche;
• c) Anordnen wenigstens eines Teils der Abdichtfläche auf einer Absenkrampe, die sich schräg nach unten in Richtung des Gewässerbodens erstreckt und die Abdichtfläche beim Einbringen in das Wasser und beim Ablegen auf dem Gewässergrund unterstützt;
• d) Einbringen eines Betonmaterials in wenigstens einen Teil der Hohlräume in einem mittleren Bereich der auf der Absenkrampe befindlichen Betonschalungshülle; und
• e) sukzessives Absenken der Betonschalungshülle über die Absenkrampe bis zur Auflage auf einer Gewässergrundfläche.

According to the invention, a method is also provided for sealing sole and slope areas of a water body in a water-bearing state. The method comprises the following steps:

• a) applying a plurality of webs of a concrete formwork sheath on a work surface, wherein the work platform is located above a water area of a water body to be sealed and a work surface, and wherein as concrete shuttering shell a sheet-shaped flexible concrete formwork sheath is provided with a plurality of cavities for receiving a concrete material;
• b) connecting the plurality of webs of the concrete formwork sheath to a sealing surface;
• c) arranging at least a portion of the sealing surface on a lowering ramp which extends obliquely downward in the direction of the water bottom and the sealing surface when introduced into supports the water and when depositing on the riverbed;
• d) placing a concrete material in at least a portion of the cavities in a central region of the concrete formwork shroud located on the lowering ramp; and
• e) successive lowering of the concrete formwork covering the lowering ramp to the support on a body of water surface.

According to one example, the concrete formwork sheath has lateral areas which laterally adjoin the middle area in the water direction and are rolled up over the lowering ramp before lowering and are deposited together with the central area. After depositing the filled seal on the bottom of the water, the lateral areas are filled with a concrete material.

According to one example, the work platform in the water direction for a continuous sealing of the water surface in water-bearing state is successively moved along the water.

For example, a successive sealing of the body surface in a water-bearing state is made possible.

For example, the working platform is pulled counter to a flow direction, wherein the inflowing water causes a buoyancy force against the dead weight of the working platform. To influence the effect of the inflowing water can be provided on the bottom adjustable Wasserleitvorrichtungen.

• i) Auslegen eines freien Endes der zusammengesetzten Abdichtfläche auf der Plattform, wobei das freie Ende auf die Fläche des mittleren Bereichs bezogen quadratisch ist;
• ii) Aufrollen der sich anschließenden seitliche Bereiche zu zwei Rollen, die zunächst in Richtung des Gewässers ausgerichtet sind;
• iii) Legen der ersten der beiden Rollen mit ihrem von der Absenkrampe entfernten Ende in Richtung des Endes der anderen Rolle, welches andere Ende zur Absenkrampe hinweist, so dass die erste Rolle quer zu einer Gewässerrichtung ausgerichtet auf der Absenkrampe liegt; außerdem ist ein Legen der anderen Rolle vorgesehen, so dass diese ebenfalls auf der Absenkrampe quer zur Gewässerrichtung ausgerichtet liegt;
• iv) Legen des von der Arbeitsplattform abstehenden Endes der Abdichtfläche auf die Absenkrampe, wobei an den entfernt liegenden Enden Befestigungsvorrichtungen ausgebildet sind, um die Rollen später wenigstens teilweise wieder auf die Arbeitsplattform zu ziehen; und
• v) temporares vertikales Lösen der Absenkrampe an ihrem oberen Ende von der Arbeitsplattform und Eintauchen der Absenkrampe in das Wasser mit ihrem oberen Ende zusammen mit der aufgelegten zusammengerollten und gefalteten Betonschalungshülle.

According to one example, the following steps are provided for temporarily interrupting the laying of the concrete formwork envelope:

• i) laying a free end of the composite sealing surface on the platform, the free end being square with respect to the area of the central region;
• ii) rolling the adjoining lateral areas to two rollers, which are initially aligned in the direction of the water;
• iii) placing the first of the two rollers with their end remote from the lowering ramp toward the end of the other roller, which points other end towards the lowering ramp, so that the first roller is oriented transversely to a water direction on the lowering ramp; In addition, a laying of the other role is provided so that it is also aligned on the lowering ramp transversely to the water direction;
• iv) placing the end of the sealing surface protruding from the working platform onto the lowering ramp, fastening devices being formed at the distal ends for later retracting the rollers at least partially back onto the working platform; and
• v) temporarily vertically releasing the lowering ramp at its upper end from the working platform and immersing the lowering ramp in the water with its upper end together with the laid-up rolled-up and folded concrete formwork sheath.

The flip of the roll is a mirroring along a diagonal.

After lowering the lowering ramp can be raised at its upper end again and connected to the working platform to spread the sealing surface in the reverse order, for example, to connect more segments or webs.

In one example, the direction of the body of water is aligned with the direction of the inclined lowering ramp.

In one example, it is provided that portions of the sole (which are actually concreted on the sloping ramp) are first rolled out on the sole and then filled by means of divers via filling supports. This procedure mainly affects areas that are difficult to access, such as inlet and outlet structures, bridges, etc. The filler necks are sewn directly onto the upper shell.

According to one aspect, it is provided that the seal in the form of a concrete shuttering shell can be made continuously on a working platform for as large a range as possible in order to simultaneously be gradually lowered onto the waterbed. The lowering is supported by the parallel filling of the concrete formwork envelope with concrete. At the same time the seal is held by the dead weight at the bottom of the water. This can be a large-scale continuous sealing accomplish that can be provided during ongoing operation of the water, especially in water-transporting channels.

It should be noted that the features of the embodiments and aspects of the devices and the system also apply to embodiments of the method. In addition, even those features can be freely combined with each other, in which this is not explicitly mentioned, with synergetic effects that go beyond the addition of the various features.

Hereinafter, reference will be made to embodiments of the invention with reference to the accompanying drawings. Show it:

1 a schematic longitudinal section through a sealing system for sealing sole and slope areas of a water body in water-bearing state;

2 another example of a sealing system in a perspective sketch of a discharged concrete formwork shell;

3 a further embodiment in a sectional view through a channel cross-section;

4 a further embodiment in a schematic longitudinal section with a releasably held lowering ramp;

5 Another example of a planned concrete formwork shell, in which for a temporary interruption of laying the free end is collapsed, wherein 5A shows a first state and

5B a subsequent second state;

6 a schematic overview of process steps of an example of a method for sealing sole and slope areas of a water body in water-bearing state;

7 another example of a method;

8th another example of a method; and

9 a further embodiment of a sealing system in a schematic longitudinal section in 9A , a perspective top view in 9B and a cross section in 9C ,

1 shows a schematic longitudinal section through a sealing system 10 of sole and slope areas of a water body in a water-bearing state. The sealing system 10 has a work platform 12 , a first feeding device 14 , a connection device 16 , a lowering ramp 18 , a second feeder 20 and a moving device 22 on. The work platform 12 is above a water area 24 a sealed water area 26 arranged and includes a work surface 28 ,

The first feeder 14 serves to create sheets of a concrete formwork envelope 30 on the work surface 28 deploy. As a concrete formwork cover 30 is a web-shaped flexible concrete formwork sheath with a plurality of cavities (not shown here) provided for receiving a concrete material. The connection device 16 serves the multiple tracks of the concrete formwork envelope 30 to a continuous sealing surface 33 connect to. The feeding of the concrete formwork sheath webs is with a first arrow 32 indicated.

The lowering ramp 18 is with a first end 34 at the work platform 12 attached and with a second end 36 that's the first end 34 opposite, in the direction of the body of water lowered. In the lowered state P1, the lowering ramp extends 18 from the work platform 12 sloping down towards the water's bottom, as in 1 is shown. The lowering ramp 18 supports the sealing surface 33 when introduced into the water and when depositing on the bottom of the river at least partially.

The second feeder 20 serves a concrete material in at least a part of the cavities in a central area 38 (please refer 2 ) on the lowering ramp 18 located concrete formwork shell 30 bring in for a successive lowering of the concrete formwork envelope 30 over the lowering ramp 18 until the application on a water surface 40 , The feeding of the concrete material is with a feed line 42 and a second arrow 44 indicated schematically. The concrete formwork cover 30 is in one area on the work platform 12 represented by a simple line, and in the area of the lowering ramp 18 with a double line, creating cavities 46 be hinted that can be filled with the concrete material, or filled.

The movement device 22 serves to the work platform 12 , and with it the lowering ramp 18 to move along the water to z. B. to allow a successive sealing of the sole and slope areas in water-bearing state.

In 1 For example, it is shown that the sealing surface 33 in a first area 46 on the ground 40 rests. A first movement arrow 48 implies that the work platform by the moving device 22 (with a view to 1 ) can be moved to the right, to a subsequent area, which is currently still on the lowering ramp 18 is located on the bottom of the water.

In an example that is in 2 is shown in a perspective view, without going into further details of the aforementioned construction, or the system, the concrete formwork shell 30 lateral areas 50 on, which in the water direction laterally to the middle area 38 and while lowering over the lowering ramp 18 rolled up what is in 2 with reference number 50a is indicated. It is also in 2 shown that in the laid out state, the lateral areas 50 also rolled out to lateral bank slopes can be applied adapted, which with reference numerals 50b is indicated.

According to another example, in 3 in a cross section through a channel 52 is shown are the lateral areas 50 after laying the middle area 38 Rollable, what with a rolled-up structure 54 in the left area and a first arrow shown there 56 is indicated. In the right area is a rolled-out state 58 shown, in which the cavities are already filled with concrete material or filled to lateral bank slopes 60 of the body of water, such as the canal 52 to seal.

In 4 Another example is shown where the first end 34 the lowering ramp on the working platform 12 is held temporarily releasably and in a dissolved state P2 is at least vertically movable, what with a double arrow 62 is indicated. The lowering ramp 18 is with the first end 34 lowered into the water and with the first end 34 also erectable and with the work platform 12 connectable again. For example, a vertical connection 64 is provided. In another example, it is provided that the lowering ramp 18 can straighten itself up or lowers itself.

In 4 is the lowering ramp 18 on the riverbed 40 shown lying.

If at the same time as the lowering of the feeding of the concrete formwork sheath is interrupted, and the free end, ie the not yet laid and filled end of the concrete formwork sheath on the lowering ramp 18 remains and is fixed there, a state of the system can be made available in which the water cross section in the flow direction is only minimally affected, for example, for night situations, or for situations with increased flow, for example in a power plant canal.

The lowering ramp 18 For example, with floats 66 be trained as in 1 is indicated, so that the lowering ramp 18 for lowering by flooding the floats can be successively moved down. It should be noted that the floats are an option.

Like also in 1 indicated, the lowering ramp can 18 adjustable in inclination on the work platform 12 be held, what with a double arrow 68 is indicated. The adjustability of the inclination is provided as an option.

That already related to 4 mentioned temporary interruption is in the following also with reference to 5 explained. In 5a is shown in a perspective sketch, a first state in which the concrete formwork sheath 30 is introduced both in the water, and in particular in the first area 46 filled with concrete material rests on the ground, and with an intermediate area 70 on the lowering ramp 18 is arranged. Another area 72 is located on the work platform (not shown) 12 , This further area 72 is in the longitudinal direction of the seal, ie the concrete formwork envelope 30 at a free end 74 designed so that this on the work platform 12 located area 72 in the middle area 38 the concrete formwork envelope 30 has a square shape. At a minimum, the length should not be greater than the width, the length being indicated by L and the width by B. In other words, the condition shown indicates that there is continuous joining of individual sheets of the concrete formwork envelope 30 is interrupted to provide the free end. The side areas are shown rolled up, only for the area on the work platform 12 is shown. Of course, there are also lateral areas of the concrete formwork envelope 30 in the area of the lowering ramp 18 rolled up. With a first movement arrow 76 is indicated that now one of the two lateral rollers with their free end in the direction of the area of the lowering ramp 18 folded diagonally, or stowed away. This is followed by a similar laying over the diagonal of the other area, with a second movement arrow 78 is indicated. Thereafter, both side rollers are parallel to each other in the transverse direction of the concrete formwork envelope, as in 5B is indicated where two rollers are arranged parallel to each other. For a better understanding, the first folded roll is by reference number 80 designated and the second with reference numeral 82 , From the middle area 38 which was originally completely on the work platform 12 was, is only a triangular area 84 present, here several surfaces of the concrete formwork envelope 30 folded over each other. After the two rollers are arranged parallel to each other, the triangular-shaped end 84 in the direction of the lowering ramp 18 folded, what with a third movement arrow 86 is indicated. In a variant, not shown, it is provided that the triangular end 84 in the direction of the lowering ramp 18 rolled up, ie in the direction of the movement arrow 86 , so that then three instead of the two rollers shown are arranged at the upper end of the lowering ramp. The two or three rolls can be side by side or on top of each other. The orientation is, for example, in Essentially parallel to each other. After all, it is located on the work platform 12 located area of the concrete formwork envelope 30 on the lowering ramp 18 , If now at the free ends, in particular the roll ends, ropes are attached, the lowering ramp can 18 be lowered, for example, a temporary interruption, z. B. for night situations, to provide. Instead of ropes, other holding or fastening means can be used. The ropes above serve the concrete shuttering shell 30 back to the work platform 12 to be able to roll out in order to continue with the further connection or installation.

Subsequently, ie after lowering the lowering ramp 18 , can the lowering ramp 18 again with her first end 34 be pivoted upward to subsequently reverse the laying steps, ie the folding of the triangle and the folding of the two rollers, in reverse order, so again an area on the working platform 12 spread. After that, you can connect again with the connection device 16 accomplish a continuous bonding of the geomembranes.

• – In einem ersten Schritt 102 werden mehrere Bahnen einer Betonschalungshülle auf einer Arbeitsfläche ausgebracht. Die Arbeitsplattform ist oberhalb eines Wasserbereichs eines abzudichtenden Gewässerbereichs angeordnet und umfasst eine Arbeitsfläche. Als Betonschalungshülle ist eine bahnenförmige flexible Betonschalungshülle mit einer Vielzahl von Hohlräumen zur Aufnahme eines Betonmaterials vorgesehen.
• – In einem zweiten Schritt 104 erfolgt ein Verbinden der mehreren Bahnen der Betonschalungshülle zu einer Abdichtfläche.
• – In einem dritten Schritt 106 wird wenigstens ein Teil der Abdichtfläche auf einer Absenkrampe, die sich schräg nach unten in Richtung des Gewässerbodens erstreckt, angeordnet, wobei die Absenkrampe die Abdichtfläche beim Einbringen in das Wasser und beim Ablegen auf dem Gewässergrund unterstützt.
• – In einem vierten Schritt 108 wird ein Betonmaterial in wenigstens einen Teil der Hohlräume in einem mittleren Bereich der auf der Absenkrampe befindlichen Betonschalungshülle eingebracht.
• – In einem fünften Schritt 110 wird die Betonschalungshülle über die Absenkrampe bis zur Auflage auf einer Gewässergrundfläche sukzessive abgesenkt.

In 6 is a procedure 100 for sealing sole and slope areas of a water body in a water-bearing state. The procedure 100 includes the following steps:

• - In a first step 102 several sheets of concrete formwork sheath are spread on a work surface. The work platform is arranged above a water area of a water body to be sealed and comprises a work surface. As a concrete formwork sheath a sheet-like flexible concrete formwork sheath is provided with a plurality of cavities for receiving a concrete material.
• - In a second step 104 a connection of the plurality of webs of the concrete formwork sheath takes place to a sealing surface.
• - In a third step 106 At least a part of the sealing surface is arranged on a lowering ramp which extends obliquely downward in the direction of the water bottom, the lowering ramp supporting the sealing surface when introduced into the water and when being deposited on the bottom of the water.
• - In a fourth step 108 a concrete material is introduced into at least a portion of the cavities in a central region of the concrete formwork shroud located on the lowering ramp.
• - In a fifth step 110 The concrete formwork cover is lowered successively over the lowering ramp to the support on a water surface.

The first step 102 is also referred to as step a), the second step 104 as step b), the third step 106 as step c), the fourth step 108 as step d) and the fifth step 110 as step e).

In another example, that in 7 is shown, the concrete formwork sheath on lateral areas, which laterally adjoin the middle region in the water direction, and before lowering over the lowering ramp in a further step 112 rolled up and stored together with the middle area. After placing the filled seal on the river bottom, the lateral areas with a concrete material in a further step 114 filled.

According to an example not shown further, the working platform in the water direction for a continuous sealing of the body surface in water-bearing state is successively moved along the water.

• – Für ein temporares Unterbrechen des Verlegens der Betonschalungshülle ist ein erster Zusatzschritt 116 vorgesehen, in dem ein freies Ende der zusammengesetzten Abdichtfläche auf der Plattform ausgelegt wird, wobei das freie Ende auf die Fläche des mittleren Bereichs bezogen quadratisch ist, bzw. wenigstens eine Länge aufweist, die maximale der Breite entspricht.
• – In einem zweiten Zusatzschritt 118 werden die sich anschließenden seitlichen Bereiche zu zwei Rollen aufgerollt, die zunächst in Richtung des Gewässers bzw. der bereits verlegten Abdichtungsbahnen ausgerichtet sind.
• – In einem dritten Zusatzschritt 120 ist vorgesehen, dass die erste der beiden Rollen mit ihrem von der Absenkrampe entfernten Ende in Richtung des Endes der anderen Rolle, welches andere Ende zur Absenkrampe hinweist, gelegt wird, so dass die erste Rolle quer zu einer Gewässerrichtung bzw. der Abdichtungsbahn ausgerichtet auf der Absenkrampe liegt. Außerdem wird die andere Rolle so gelegt, dass diese ebenfalls auf der Absenkrampe quer zur Gewässerrichtung ausgerichtet liegt.
• – In einem vierten Zusatzschritt 122 wird das von der Arbeitsplattform abstehende Ende auf die Absenkrampe gelegt. Dabei sind an den entfernt liegenden Enden Befestigungsvorrichtungen, z. B. Seile, ausgebildet bzw. vorgesehen, um die Rollen später wenigstens teilweise wieder auf die Arbeitsplattform zu ziehen.
• – In einem fünften Zusatzschritt 124 ist ein temporares vertikales Lösen der Absenkrampe an ihrem oberen Ende von der Arbeitsplattform und ein Eintauchen der Absenkrampe in das Wasser mit ihrem oberen Ende zusammen mit der aufgelegten zusammengerollten und gefalteten Betonschalungshülle vorgesehen.

In 8th another example of the method is shown in which further steps are provided:

• - For a temporary interruption of laying the concrete formwork shell is a first additional step 116 in which a free end of the composite sealing surface is laid out on the platform, wherein the free end is square with respect to the surface of the central region, or at least has a length which corresponds to the maximum of the width.
• - In a second additional step 118 the subsequent lateral areas are rolled up into two rolls, which are initially aligned in the direction of the water body or the already laid waterproofing membranes.
• - In a third additional step 120 it is provided that the first of the two rollers is placed with its end remote from the lowering ramp towards the end of the other roller, which other end points to the lowering ramp, so that the first roller transversely to a water direction or the sealing sheet aligned on the Lowering ramp is located. In addition, the other role is placed so that it is also aligned on the lowering ramp transversely to the water direction.
• - In a fourth additional step 122 the end projecting from the working platform is placed on the lowering ramp. Here are at the remote ends fastening devices, eg. As ropes, trained or provided to later pull the roles at least partially back on the work platform.
• - In a fifth additional step 124 is a temporary vertical release of the lowering ramp at its upper end from the working platform and immersing the lowering ramp in the water is provided with its upper end together with the laid rolled-up and folded concrete formwork sheath.

The first additional step 116 is also referred to as step i), the second additional step 118 as step ii), the third additional step 120 as step iii), the fourth additional step 122 as step iv) and the fifth additional step 124 as step v).

In a further, not shown example, it is provided that in a further additional step, the lowering ramp is moved back up in the direction of the work platform to unfold the folded concrete formwork shell again so that it is spread on the working platform to the side rollers to then add further web segments.

In 9 is another embodiment of the sealing system 10 shown. 9A shows a longitudinal view, 9B a perspective top view and 9C a transverse view, for example, in connection with a sealed channel. 9A shows the work platform 12 as floating pontoons 202 , where additionally railings 204 can be seen. The lowering ramp 18 is made up of several, floatable bodies 206 composed. There are also side upstands 208 hinted that guiding the concrete formwork envelope 30 serve. The sealing system 10 is also with winch constructions 210 formed at the two ends. There is also another wind 212 represented, for example, as a discharge device is provided in order to lower the filled concrete formwork sheath controlled. Furthermore, a compressor 214 indicated. With an arrow 216 For example, the direction of flow of a sealed channel is indicated.

It should be noted that the other, already mentioned devices, in particular the first feeding device 14 , the connecting device 16 , the second feeder 20 are not shown, but are of course provided.

In 9B can be seen that in an area around the lowering ramp 18 pontoons are provided as a kind of enclosure of this area around, for example, to provide there devices for raising and lowering the lowering ramp, which in 9A with a line 218 is indicated.

In 9C is shown that the lowering ramp 18 is formed with a width corresponding to the width of the channel base. The work platform 12 however, is formed with a larger width.

The embodiments described above can be combined in different ways. In particular, aspects of the method may also be used for embodiments of the devices as well as use of the devices, and vice versa. In addition, it should be noted that "encompassing" does not exclude other elements or steps, and "a" or "an" does not exclude a multitude. It should also be appreciated that features or steps described with reference to any of the above embodiments and aspects may also be used in combination with other features or steps of other embodiments and aspects described above. Reference signs in the claims are not to be considered as limiting.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202008014492 U1 [0002]

Claims (13)

Sealing system ( 10 ) for sealing sole and slope areas of a water body in a water-bearing state, comprising: - a working platform ( 12 ); A first feeding device ( 14 ); A connection device ( 16 ); - a lowering ramp ( 18 ); A second delivery device ( 20 ); and a movement device ( 22 ); wherein the work platform above a water area ( 24 ) of a watercourse to be sealed ( 26 ) and a work surface ( 28 ); wherein the first feeding device is formed webs of a concrete formwork envelope ( 30 ) to be applied to the work surface, wherein as concrete formwork sheath a sheet-shaped flexible concrete formwork sheath is provided with a plurality of cavities for receiving a concrete material; wherein the connecting device is formed, the plurality of tracks of the concrete formwork sheath to a continuous sealing surface ( 33 ) connect to; the lowering ramp having a first end ( 34 ) is attached to the work platform and with a second end ( 36 ), which is opposite to the first end, is lowered in the direction of the body of water, wherein the lowering ramp extends in the lowered state (PI) from the working platform obliquely downward in the direction of the water bottom, and wherein the lowering ramp is formed the sealing surface when introduced into the water and at least partially assisting in depositing on the body of water; wherein the second feeding device is formed a concrete material in at least a part of the cavities in a central region ( 38 ) to bring in the concrete formwork cover located on the lowering ramp for a successive lowering of the concrete formwork cover over the lowering ramp to the support on a water surface ( 40 ); and wherein the movement means is adapted to move the work platform along the water. Sealing system according to claim 1, wherein the concrete formwork envelope has lateral areas ( 50 ), which laterally adjoin the central region in the water direction, and which are rolled up during the lowering over the lowering ramp. Sealing system according to claim 2, wherein the lateral areas are rolled out after laying the central area under water; and wherein the concrete formwork envelope can also be filled with concrete material in the lateral body water basins for sealing side bank slopes ( 60 ) of the water. A sealing system according to claim 1, 2 or 3, wherein the first end of the lowering ramp is temporarily releasably held on the work platform and in the released state (P2) is at least vertically movable; and wherein the lowering ramp is lowerable with its first end into the water and with the first end upright again and can be reconnected to the working platform. Sealing system according to the preceding claim, wherein for a temporary interruption of the sealing process, a part of the not yet laid concrete formwork shell remains on the lowering ramp and is temporarily fixable on the lowering ramp; and wherein the lowering ramp is lowered with the concrete formwork sheath in the water in the direction of the body of water. Sealing system according to one of the preceding claims, wherein at the lowering ramp floats ( 66 ) are provided; and wherein for lowering the lowering ramp, at least a part of the floats is floodable. Sealing system according to one of the preceding claims, wherein the lowering ramp is adjustable in its inclination ( 68 ) is held on the work platform. Sealing system according to one of the preceding claims, wherein on the working platform discharge devices ( 212 ) are provided, with the filled concrete formwork cover is controlled lowered. Sealing system according to one of the preceding claims, wherein the water is a channel, a waterway and / or a harbor area. Procedure ( 100 ) for sealing sole and slope areas of a water body in a water-bearing state, the method comprising the following steps: a) spreading ( 102 ) of a plurality of webs of a concrete formwork sheathing on a work surface, the work platform being located above a water area of a watering area to be sealed and comprising a work surface, and wherein as concrete formwork sheath is provided a sheet-shaped flexible concrete formwork sheath having a plurality of cavities for receiving a concrete material; b) Connect ( 104 ) of the plurality of sheets of the concrete formwork sheath to a sealing surface; c) Arranging ( 106 ) at least a portion of the sealing surface on a lowering ramp, which extends obliquely downwards in the direction of the water bottom and supports the sealing surface when introduced into the water and when depositing on the bottom of the water; d) introduction ( 108 ) a concrete material in at least a part of the cavities in a middle region of the concrete formwork envelope located on the lowering ramp; and e) successive lowering ( 110 ) of the concrete formwork covering the lowering ramp to the support on a water surface. A method according to claim 10, wherein the concrete formwork sheath has lateral areas which laterally adjoin the central area in the water direction and are rolled up over the lowering ramp before being lowered ( 112 ) and stored together with the middle area; and wherein after depositing the filled seal on the bottom of the water, the lateral areas are also filled with a concrete material ( 114 ). A method according to claim 10 or 11, wherein the working platform in the water direction for a continuous sealing of the body surface in water-bearing state is successively moved along the water. Method according to one of claims 10, 11 or 12, wherein the following steps are provided for temporarily interrupting the laying of the concrete formwork envelope: i) laying out ( 116 ) a free end of the composite sealing surface on the platform, the free end being square with respect to the area of the central region; ii) rolling up ( 118 ) of the adjoining lateral areas to two rollers, which are initially aligned in the direction of the water; iii) laying ( 120 ) of the first of the two rollers with its end away from the lowering ramp towards the end of the other roller, which points other end towards the lowering ramp, so that the first roller is aligned transversely to a water direction on the lowering ramp, and laying the other roller, so that this is also aligned on the lowering ramp transversely to the water direction; iv) laying ( 122 ) of the working platform protruding end of the sealing surface on the lowering ramp, wherein at the distal ends fastening devices are formed to later at least partially pull the rollers back onto the work platform; and v) temporary vertical release ( 124 ) the lowering ramp at its upper end from the working platform and immersing the lowering ramp in the water with its upper end together with the laid rolled up and folded concrete formwork sheath.

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