摘要:
An apparatus, system and method for removing and treating contaminated materials on a bottom of a body of water and introducing growth packets to revitalize the treated bottom of the body of water. The structure may comprise a vessel with an open face. The vessel may be lowered down to the bottom of the body of water with the face facing down. As a result, the vessel and the bottom form an isolated space. The structure may comprise at least one agitating device(s) for stirring up the materials inside the vessel so as to form a mixture containing the sediment materials which in turn contain the contaminants. Multiple at least one pipe(s) may be coupled to the vessel for transporting the mixture out of the vessel for processing (filtering, treating with chemicals, etc.) so as to neutralize or eliminate the contaminants in the mixture. Then, the treated mixture can be returned to the inside of the vessel via the at least one pipe(s).
摘要:
Die Erfindung bezieht sich auf eine Erdbohrvorrichtung mit einem Drehantrieb und einem mit dem Drehantrieb über eine Welle verbundenen Bohrkopf. Die Erfindung zeichnet sich dadurch aus, dass die Welle zumindest teilweise axial längs eines Rohrs mit zwei Rohrenden verläuft, dessen erstes Rohrende mit einer Unterdruckquelle verbindbar ist und dessen zweites Rohrende eine Rohröffnung vorsieht, über die der Bohrkopf zumindest teilweise das Rohr überragt, dass der Bohrkopf wenigstens zwei mit der Welle verbundene Stegabschnitte vorsieht, die mit radialer Erstreckung an der Welle angebracht sind und in Projektion zur Rohrachse die Rohröffnung lediglich teilweise bedecken, dass die Stegabschnitte jeweils mit einem axial orientierten Flächenabschnitt verbunden sind, dessen radial nach außen orientierte Oberfläche bei Rotation des Bohrkopfes in gleitenden Kontakt mit der Rohrinnenwand oder einer Innenwand einer koaxial mit dem zweiten Rohrende verbundenen Hülse tritt, dass die axial orientierten Flächenabschnitte jeweils mit einem das Rohr oder die Hülse axial überragenden Schenkel verbunden sind.
摘要:
An assembly for mounting an excavating tooth (30) particularly suited for a dredge cutterhead includes a base (52), an adapter (34), and a lock (36). The base (32) includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading.
摘要:
La présente invention concerne une bouche d'aspiration pour une machine d'excavation de tranchée travaillant dans un liquide de forage et comprenant un châssis sur lequel sont montés deux ensembles, rotatifs de coupe à axes parallèles, ladite bouche étant destinée à être montée à l'extrémité inférieure du châssis entre les deux ensembles rotatifs de coupe. La bouche (40) comprend une paroi externe (42) définissant un volume interne (56), une ouverture supérieure (54) raccordable à une conduite d'aspiration et au moins une ouverture inférieure (58) symétrique par rapport au premier plan médian vertical du châssis parallèle aux axes de rotation, et s'étendant selon la direction desdits axes de rotation, par quoi ladite ouverture (58) est sensiblement orthogonale à l'écoulement du liquide de forage entraîné par la rotation desdits ensembles de coupe.
摘要:
The invention concerns a method for mining sand or gravel from a sand or gravel deposit at the bottom of a body of water, comprising the following steps: i) providing mining machinery capable of conveying sand or gravel from a mining position at the bottom of said water to a desired location, said mining position being at a level relatively lower than the upper limit of said deposit of sand or gravel to be mined; ii) providing water injection means capable of injecting water into the sand or gravel deposit iii) injecting water into said deposit by said injection means such that said injection is performed substantially directly into the surface of said deposit, in an amount and at a rate selected so that the sand or gravel and the injected water form a liquefied layer, said liquefied layer being capable of flowing under the influence of gravity from the place of said deposit to the lower level mining position, and iiii) mining said sand or gravel by means of said mining machinery, after said sand or gravel has flown from said deposit to said mining position.
摘要:
An excavation system (800) is described which comprises a bucket (802), defining an outlet (804) at its base (806), in fluid communication with a suction tube (102) in fluid communication with a jet pump (107), configured to create a suction in the suction tube. A related method of excavating is also described.
摘要:
A method of, and apparatus for, lining the interior surface (13) of a passageway (15) such as a pipeline, involving progressive installation of a liner (11) on the interior surface (13) of the passageway (15) or on a substrate applied to the interior surface of the passageway by adhesively bonding the liner (11) in position. The liner (11) is bonded to the inner surface (13) of the passageway (15), or onto a substrate applied to the inner surface of the passageway, using a substance which hardens and which together with the liner (11) forms a rigid structure. The apparatus (10) includes a body (23) adapted to be moved along the passageway (15) to progressively install the liner (11). The body (23) also applies the adhesive for the bonding process.