PROCEDURE FOR THE PRODUCTION OF A DRAINAGE CHANNEL AT A WALL

The invention refers to a procedure for the production of a drainage channel at a wall, in particular to sealing and Dränieren of an underground cavity approximately from the mountain penetrating water. With the building of tunnels and underground plants frequently WasserinfHtrationen from the mountain arise into the tunnel and/or into the underground cavity, which must be derived or displaced. This is among other things necessary, if the tunnel receives a final lining from concrete. Penetrating water, dripping water or sources obstruct the lining work and/or not possibly make it. The well-known lining work presupposes a damp to dry underground, since flowing water or more easily mountain printing ffir the lining freshly brought in concrete out-washed and the endgiltige lining would already destroy before its hardening. For deriving or displacing the water infiltrating into the tunnel are become known to the today following procedures. Sprayed on after one of these procedures spraying concrete or Gunit (fine spraying concrete), which a setting accelerator is admitted, on the tunnel wall up to a sufficient thickness, in order to close the Wasserzufluß off from the mountain into the tunnel. Is thereby however so high water pressure can develop itself that from the spraying concrete layer whole plates are ahgesprengt. By the high water pressure the water can flow meanwhile also by finest Haarrlsse in the spraying concrete layer through into the inside of the tunnel. This procedure has meanwhile the advantage that it is relatively easily executable, as the tunnel wall within the range of the Wasserinffltration spray overs only with spraying concrete become must, which stands arbeitsteehnisch no special problems. In a further procedure oblong rigid Eternitoder ringsegmentförmige in the cross section flexible Kunststoffsehalen within the water entrance range is presented on the tunnel wall and fastened by hand with a cement with setting accelerator to it. With the help of these bowls a drainage line system at the tunnel wall is developed, which spray overs after the provisional attachment with Zementmörtei additionally with spraying concrete in sufficient thickness becomes. The structure of high water pressure behind the spraying concrete layer by the infiltrating water is excluded by this procedure. The substantial disadvantage is in that the attachment of the drainage lines is extremely labor-consuming. After a further, the so-called “Oberhasli procedure” the drainage channel is developed by means of a high elastic rubber hose etappenweise. The rubber hose is put to the tunnel wall and with spraying concrete spray overs. Before the spraying concrete is completely hardened, the hose is pulled out. By the longitudinal expansion arising when pulling out the diameter of the Gummisehlauches is reduced, so that this tears off from the spraying concrete. Afterwards in the same way the continuation of the drainage channel is formed. The disadvantage of this procedure consists of that the Gummischlaueh must be held by hand against the tunnel wall, until it spray overs with spraying concrete becomes. It is from there an manual work-intensive procedure. A further disadvantage consists of that only 32 rubber hoses with a diameter up to 20 mm are suitable, why no drainage channels with larger diameter can be manufactured. A further disadvantage consists of that with strongly uneven tunnel wall of the Dr'änagekanal in stages from only 20 to 30 cm length can be gehfldet gradually, which raises the price of the procedure extraordinarily slowed down and accordingly. The invention places itself the task to create a procedure with which the drainage channel without manual work and regarding the diameter can be manufactured within wide limits variable. According to invention this task is solved thereby that from snow the drainage duct cross section and the Dränageka l nge appropriate strand at the wall is arranged that the strand and the wall range bordering laterally on the strand are covered with a fast tying, fine spraying concrete in sufficient thickness, and that one lets or out-melts the strand thereafter under the influence 4s of the warmth fuses taken up from the environment. Further characteristics of the invention are more near described in the following with reference to the designs. Fig.1 a cross section points by a tunnel with a only partly attached drainage channel, Fig.2 a same representation as Fig.1 of the finished lined tunnel, Fig.3 a cut along the line III III after Fig.2 and Fig.4 a side view of a remark example of a s0 device to the execution of the procedure, partly cut. In the Fig.1 and 2 a cross section is represented by a tunnel. The Hinwelsziffer designates --1-- the tunnel surrounding mountain and the reference number --2-- the grown tunnel wall. At the foot of the tunnel is a raised lane --7-- planned, along which laterally Rigolen --6-- for the discharge of the infiltrating water run. To would drive off by the tunnel wall --2-- into the tunnel of penetrating water crawler-type vehicle-like strands become one behind the other in longitudinal direction of the tunnel within the range of the Inffltrationsstellen in a distance of preferably 300 mm --3-- from snow with a nozzle --9-- sprayed on. The snow crawler-type vehicle is preferably 100 mm broad and s 30 mm highly. To the production of the Schneeraupa visible in Fig.1 --3-- became to basing the tunnel wall with the Rigole --6-- (in the picture left) begun, and the snow crawler-type vehicle --3-- with the nozzle --9-- progressively from bottom to top on the wall --2-- sprayed on. As soon as the snow crawler-type vehicle up to its target cross section is sprayed on, becomes by means of a second spraying nozzle - =10-= this and the laterally bordering range of the Tunnelwaud --2-- with spraying concrete or Gunit --4-- in sufficient thickness i0 spray overs. A Abbindebesehleuniger is admitted to the spraying concrete. As setting accelerators sodium silicate can be used. Further suitable setting accelerators are available in the trade under the designations “Barra” and “Sigunit”. To basing the snow crawler-type vehicle became, before spraying the spraying concrete or Gunits on a discharge pipe ==8 and/or 11== into the crawler-type vehicle --3-- put, which into the Rigole --6-- flows. The temperature of the mountain - =1-= on the one hand and the spraying concrete is or Gunits --4-- on the other hand cause a melting of the snow crawler-type vehicle --3--, so that under the spraying concrete or Gunit a channel develops, by that the water into the pipe - =8 and/or 11-- and from this into the Rigole --6-- to flow off can. The snow crawler-type vehicles --3-- can under itself parallel network-like on the tunnel wall --2-- are arranged, depending upon the requirements given by local conditions. Between the finished and with spraying concrete or Gunit snow crawler-type vehicles spray overed --3-- and/or by this after that fuses formed drainage channels on the tunnel wall - =2== is likewise sprayed on a sufficiently thick layer by spraying concrete or Gunit, so that a continuous, homogeneous impervious layer develops (Fig.3). From the mountain --1-- against the tunnel flowing water becomes at this layer laterally in one by the snow crawler-type vehicles --3-- formed drainage channels turned back. aS after it the concrete lining can on this impervious layer --5-- are applied. The production of the snow a commercial ice producer becomes --12-- (on the market available under the name “Scotsman”) uses. This supplies the ice in the form of cubes, pieces of broken glass or flakes. The ice falls over an air-lock --13-- into a blowing air line --14-- and becomes therein into a storage vessel --15-- transported. From there the ice becomes over one of an engine --16-- propelled Austragschne ke ==17-- proportions one of an l Iotor - =18-= propelled milling cutter --19-- supplied. From the milling cutter --19-- withdrawing snow falls into a compressed air line --20-- and becomes in this from compressed air to the nozzle --9-- transported, where he withdraws with large speed and is blown on the tunnel wall ==2=. Depending upon Austrittgesehwindigkeit of the snow this becomes more or less hard. , The finely bundled jet withdrawing from the nozzle =-9== permits precise laying on to the snow crawler-type vehicle --3--. Per minute about 2 m of the crawler-type vehicle become --3-- sprayed on. Within a further minute usually is the spraying concrete or Dichtungsgunit --4-- to spray on, there the snow crawler-type vehicle only during this time interval a sufficient adhesion at the tunnel wall --2-- exhibits. On squirt the spraying concrete or Gunits effected with commercial Spritzmaschlnen. The fast using rope procedure in the snow crawler-type vehicle --3-- ensures the drain of the anfalienden drainage water. With strongly water-leading sources the crawler-type vehicle becomes --3-- first up to the water discharge position led, and seizing the source becomes only after that fuses of the snow crawler-type vehicle --3-- made. Depending upon the desired snow temperature those can the snow to the nozzle --9-- transporting compressed air to be more or less cooled.