摘要:
Waves are amplified by the gradual decrease of the depth, and when the waves reach to a vertical wall 10 of a reef 2, the breaking waves are generated by sudden decrease of the water depth. As the breaking waves rush into the upper portion of the reef 2 and pass through the slant slits 14, and wave energy are absorbed by the reef 2 and the seat water returns back to the ocean through an opening 11. The sand brought into a reef 2 with the waves are washed away by the return flow 11 so that the sand is not deposited within the reef 2 and the space in the reef 2 is always clear. The return flow promotes generation of the breaking waves. The breaking waves are introduced into the slit, the beach erosion is prevented, and also the calm sea area utilized for the marine leisure is created. The seawater in the reef with sufficient air flows to the sea area behind the breakwater through the paths 19. The sea water containing sufficient oxygen is supplied to the bottom layer behind the breakwater without disturbing the surface so that the oxygen is supplied to the seawater behind the breakwater.
摘要:
The present invention provides a nitrogen oxide removal equipment, a nitrogen oxide removal method, a container used for the removal of nitrogen oxide, and a method for filling the container. A nitrogen oxide removal equipment 94 according to the present invention supplies gas with the unevenness of flowing amounts eased to an absorption unit 94a via a gas rectification means 108 for supplying gas to a large-area side of solid absorbent layers, the absorption unit 94a being provided with solid absorbent layers including a plurality of low-profile solid absorbents 95 constituting the nitrogen oxide absorption means. Nitrogen oxide contained in gas effectively passes through the solid absorbent layers and removed.
摘要:
In the building demolishing method, a large-sized heavy machine is not required and scaffolding which is necessary for demolishing a building is always secured. The guide columns 2 are erected at predetermined intervals around a lateral periphery of the building a to be demolished, the shield which is slidable up and down as guided by the guide columns 2 are assembled on a ground or at a level of a low story of the building a to surround the lateral periphery of the building, and the demolishing machines 8-10 are stored in the shield 1. The guide column member 2a is extended upward and the shield 1 is ascended as guided by guide columns 2 to cover a lateral periphery of an highest story of the building a. The building a is demolished by the demolishing machines 8-10, and every time one floor is demolished, the shield 1 storing the demolishing machines 8-10 is descended as guided by the guide column 2 and the guide column is shortened. These operations are repeated to demolish the building a.
摘要:
A method for searching a reinforcing steel embedded in a reinforced concrete. The method is comprised of magnetizing the reinforcing steel in the concrete under the action of lines of magnetic force radiated from a direct or alternating current magnetic field. After completion of the magnetization of the reinforcing steel, the lines of magnetic force are sensed by the sensor coil of a reinforcing steel searching instrument thereby to detect the existence and condition of the reinforcing steel embedded in the concrete at a high sensitivity and precision.
摘要:
A method for searching a reinforcing steel embedded in a reinforced concrete. The method is comprised of magnetizing the reinforcing steel in the concrete under the action of lines of magnetic force radiated from a direct or alternating current magnetic field. After completion of the magnetization of the reinforcing steel, the lines of magnetic force are sensed by the sensor coil of a reinforcing steel searching instrument thereby to detect the existence and condition of the reinforcing steel embedded in the concrete at a high sensitivity and precision.