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9766results about "Underwater structures" patented technology

Construction method of hydroelectric power station surge chamber vertical shaft under soft rock geological condition

The invention relates to a method for constructing a drilled shaft of a surge chamber in a hydropower station under the condition of weak rock geology; the excavation diameter of the drilled shaft is more than or equal to 20 meters; and the depth of the drilled shaft is more than or equal to 50 meters. The method comprises the following steps: firstly, a safe prestress reinforcing measure is adopted; a prestress anchor rope is arranged in a side slope of the drilled shaft; the deep rock holes in the periphery of the drilled shaft are subjected to consolidation and grouting; the periphery of the drilled shaft is cast with reinforced concrete for locking a mouth, etc; the construction sequence of excavating the drilled shaft comprises that: a raise-boring machine drills a guide hole of phi 216 millimeters from top to bottom; the raise-boring machine enlarges and excavates a small guide well of phi 1, 400 millimeters; a slag slipping guide well of phi 2, 500 millimeters is enlarged and excavated manually from bottom to top; and the slag slipping guide well is enlarged and excavated from top to bottom. The slag slipping guide well is excavated by manual drilling and blasting; slag is naturally slipped and mechanically loaded in the bottom of the well; a large well is enlarged and excavated through drilling and blasting by a manual air drill; and the skimmed slag in a hydraulic backhoe well slips to the bottom of a passage through the slag slipping guide well and is mechanically loaded in the bottom of the well. The construction method has the characteristics of having reasonable construction arrangement, alternately and simultaneously carrying out a plurality of construction types and saving the construction period.
Owner:SINOHYDRO BUREAU 5 +1

Anchor device with an elastic expansion sleeve

The invention relates to an anchor device, for stabilizing an excavation wall and to be inserted into a hole, bored in an excavation wall. Said anchor device comprises a rigid elongated rod which defines a distal end, to be inserted into the bored hole and a proximal end, opposed to the distal end, a support member, mounted on the rod in the vicinity of the proximal end thereof and provided for resting against an outer surface of the wall of rock and an anchor head, mounted on the rod and to be inserted into the hole, bored in the excavation wall. Said anchor head comprises a flexible expandable member, mounted on the rod, made of plastic and capable of radially expanding and stretching and an activating member, movably mounted on the rod, said activating member being capable of moving relative to the rigid rod and to the expandable member and capable of contacting the same in order to exert a pressure. For anchoring the anchor head into the excavation wall at the bored hole, the activating member and the expandable member are displaced relative to one another, such as to contact each other and to allow the activating member to exert a pressure upon the expandable member, in order to cause the radial expansion of at least one portion thereof, so that said portion of the expandable member makes frictional contact on a part of the inner surface, defining the hole bored in the excavation wall.
Owner:BRUNEAU MARCELLIN

Three-dimensional reinforced rigid-soft composite ecological retaining wall and construction method

The invention relates to a three-dimensional reinforced rigid-soft composite ecological retaining wall and a construction method. The retaining wall is characterized by comprising an upper portion soft ecological retaining wall body and a lower rigid retaining wall body, wherein the upper portion soft ecological retaining wall body and the lower rigid retaining wall body are connected through anchor bars. All layers of filling materials of the upper portion soft ecological retaining wall body are connected through connecting buckle parts, and water draining pipes, the connecting and fixing ends of horizontal ribbing bodies and inclined tie bars are evenly arranged on the lower rigid retaining wall body. A wall heel of a foundation of the retaining wall extends backwards to the edge of a stable soil body, vertical reinforcing piles are arranged at the bottom of the retaining wall, the horizontal ribbing bodies are laid in the filling materials behind the retaining wall, the wall toe of the retaining wall is filled back with a wall foot pressing soil body, and vertical ribbing bodies are vertically arranged at the connection position between the filling materials behind the retaining wall and an original soil body. The retaining wall structurally combines the advantages of a rigid retaining wall and the advantages of a soft retaining wall, achieves ecological slope protection, reduces pressure of soil behind the retaining wall, enhances structural integrity and has good technical and economical benefits.
Owner:SHENZHEN FUTIAN JIANAN CONSTR GRP

Access panel

An access panel for providing access to cables, services or the like through an opening in a floor having a floor covering, is disclosed. The access panel includes a floor frame (10) located in the opening and a lid (100) supported on the frame (10). The frame (10) has a support flange (26) extending around its periphery which extends between the floor covering and the floor deck. The flange (26) provides a ramped edge tapered substantially uniformly over a distance of between 10 and 20 times the maximum thickness of the flange (26). The outermost part of the flange (26) is typically formed from a flexible polymeric material. A rib (20) extends around an aperture in the frame (10) and the height of the rib (20) is lower than the load bearing surface of the floor. The hinge (24, 120) is generally square and defines a pivot surface which extends parallel to and is spaced inwardly from an inner edge of the frame (10). A lid (100) for closing the aperture defines a bearing surface (120) which is adapted to slidably engage on the pivot surface (24) to allow the lid (100) to bear and pivot about the pivot surface (24). The lid (100) includes hatches (104, 106) which are moveable between an open position in which there is an aperture in the lid (100) through which cable services may extend and a closed position in which there is no aperture. Locking means (124, 126) are provided between the hatch (104, 106) and the frame (10) to lock the hatch (104, 106) in place in both the open and closed positions.
Owner:CABSCAPE HLDG
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