DE588407C - Method for pressing a detergent into damaged structures, stone or the like. - Google Patents

Description

Kr

. .., ■! , U-IJ

If cracks, crevices or cavities are to be filled or sealed in watertight or statically endangered, cracked components or in water-bearing, fissured mountains, a sufficient prior flushing is absolutely necessary. B. acids contain.
If weathering or decomposition substances adhere to the walls of the crevices or cavities, sealing or static restoration of the structural or rock part weakened by the crevices or cavities is not possible, since the injected filler or sealant does not adhere to the healthy ones , bare walls, which is absolutely necessary to establish a solid and permanent connection. If they are not removed, the decomposition substances can continue to exert their explosive effect, all the more so as the crystallization pressure no longer finds any free space to expand due to the filling of the gaps or cavities.

So the pressing in of filler or sealant shouldn't be in vain, but rather the one . The structural or rock part in question is actually consolidated or permanently sealed in '30 the cracks, gaps or cavities must be flushed thoroughly before pressing.

So far the procedure has been so that by means of a pipe inserted into a borehole the flushing agent is injected after the borehole on the surface by means of a has been sealed around the press tube arranged ring wedge. The detergent should thereby through the opening into this borehole and with adjacent boreholes in Connected cracks, gaps or cavities through into these neighboring ones Drilled holes are pressed and thereby the loose components lying on his way with rinse out. But since the detergent flow naturally follows the path of the is looking for the least resistance, this method only removes the larger cracks, Gaps or cavities are flushed, while the smaller ones are not flowed through by the flushing agent flow will.

The recognition of this inadequacy of the previous rinsing method led to the invention out, which consists essentially in that by means of two introduced into a borehole and then closed off a space in the borehole with compressed air inflated hoses so that the detergent then pressed into this space only enters the cracks and gaps opening into this space or cavities can penetrate. To this

*) The patent seeker stated as the inventor:

Dr.-Ing. Wilhelm KUe in Kiel.-

In this way, it is possible to effectively flush all cracks, gaps or cavities one after the other, since the detergent is forced to pass through the cracks, gaps or cavities opening into the respective closed space.
The use of hoses inflated with compressed air is known per se in civil engineering, specifically also in connection with compression pipes introduced into boreholes. So far, such compressed air hoses have only been used to seal the borehole from the outside, but not to close off a space * 5 within the borehole for the purpose of effective flushing of the cracks, gaps or cavities opening into this borehole.

In the drawing, there is an exemplary embodiment of one for practicing this method ao suitable device shown.

To introduce the flushing agent, e.g. compressed water or compressed air, into the borehole, a flushing pipe a is used, which is provided at the lower end with a screw-off cover b, at the upper end with a hose coupling c for connection to a flushing agent line and in the middle part with openings d , through which the flushing agent enters the borehole. A second hose coupling. ^ Connects a compressed air line with the tube f arranged in the flushing tube α , which serves to introduce compressed air into the two hoses g ¹ and g * which are attached to the flushing tube at a distance from one another. For this purpose, the compressed air line is at h ¹ and h ^? guided through the tube α. The hoses are attached airtight to the flushing pipe at their ends by means of screw connections i (FIG. 2).

After the flushing pipe has been inserted into a borehole to such a depth that the openings d face the crevices or cavities which open into the borehole and are to be flushed, the two hoses g ⁴ and g ^{2 are} inflated with compressed air, thereby opening the borehole part enclosed by them seal against the rest of the borehole. Then is forced through the flush pipe "the detergent therefore, that through the openings d only concluded by the inflated Schjäuche part of the well enters and from here the thoroughly flushed through this hole portion which opens gaps or voids in ^x, after which it flows through adjacent holes into which these gaps or cavities open.

The lowest gaps or cavities opening into the borehole can also be flushed after the openings d have been closed by means of a hinged closure jacket k (FIG. 3) and after the pipe closure b has been removed. Here, both hoses g ¹ and g ² seal off the washing area from the outside. This is of particular advantage because the deeper cracks or gaps, which are usually finer and therefore cause greater flow resistance, can then be flushed with greater pressure.

By means of also lockable orrings arranged above the hose g ^l , after the borehole wall has been sealed by an annular wedge j, the gaps or cavities opening into the borehole between the hose g ¹ and this wedge can be flushed.

For flushing very deep boreholes, e.g. B. in dam walls or in the mountains from the tunnel, the flushing pipe is expediently at the top with one or more extension pipes Mistake.

With such a device, individual cracks, gaps or cavities can be rinsed at any number of depths and accordingly at greater depths with greater, made at a shallower depth with less pressure, also alternating high and low will.

The hoses ² are expediently made of rubber and clamped airtight at their ends, as shown in FIG. 2, for example. The locking sleeve /, which can be tightened by means of the nut m , presses the hose end g, which was previously slipped over the annular cone η, with its internally grooved claw firmly against the externally grooved annular cone n To prevent annular cones, an elastic seal p pressed on by the nut ο is arranged on the outside of this.

In order to protect against excessive inflation, the hoses are expediently surrounded with a hemp net q , which is also clamped in by the screw connection.

In wells that exhibit strong broken or their walls are very sharp-edged deep indentations and protrusions, it is recommended, for the protection of the hose or a hose r to put over it.

Claims (5)

Patent claims: i. Method for pressing a flushing agent into cracks, crevices or cavities of damaged structures, rock or the like by means of pipes inserted into boreholes, characterized in that by means of two hoses (g ¹ , g ² ) which are introduced into a borehole and then inflated with compressed air in this borehole a space is closed, so that thereupon forced flushing agent through the pipe (α) into this space is only to penetrate into the cracks, crevices or cavities opening into this space. 2. Apparatus for performing the method according to claim i, characterized in that on the tube (α) are used to inject the detergent, two hoses surrounding this tube (g ¹ , - g ² ) are attached at a distance from each other, which can be inflated by means of compressed air and lay against the wall of the borehole. 3. Apparatus according to claim 2, characterized in that in the tube (α) serving for introducing the flushing agent there is arranged a line (/) serving to supply compressed air, which is passed through the tube wall and inside the hoses (g ^l , g ² ) flows out. 4. Apparatus according to claim 2, characterized in that the .. Einr pipe between the hoses with openings (ei) for the flushing agent is provided, through which the detergent in the closed off by the hoses Space between pipe and borehole wall occurs. 5. Apparatus according to claim 4, characterized in that the openings (d) of the flushing pipe lying between the hoses can be closed and the flushing pipe has further closable openings outside the hoses. 1 sheet of drawings