Seite - 1428 - in Book of Full Papers - Symposium Hydro Engineering

3.1. THE CONSTRUCTION DESIGN OF VERTICAL OPTICAL FIBER The optical fibers are alternately in odd and even layers. The odd layers of optical fibers are embedded only in odd-numbered layers and the even layers of optical fibers are embedded in even-numbered layers only (Fig.4). Fig.4 Layout diagram of odd and even layers of optical fiber (unit: m) 3.2. THE CONSTRUCTION DESIGN OF CONCRETE BLOCK OPTICAL FIBER Fig.5 The "Z" shaped alignment of optical fiber in odd and even concrete block In elevation below 871m, in each concrete block, the optical fibers start from the downstream surface to the upstream surface. The starting point is 1m away from the downstream and 3m away from the transverse joint. when the optical fiber arrives at half of the length of concrete block, it needs to turn to another transverse joint till the distance away from the joint is 3m. Ensuring the turning radius of the fiber is greater than 16cm.The entire fiber is "Z-shaped" (Fig.5). 734.0 ZQ7 ZH7 735.0 725.0 7#11 7#12 7#13 7#14 7#15 746.4 752.3 745.0 748.0 751.0 754.0 757.0 760.0 Optical fiber 734.0 ZQ7 ZH7 735.0 725.0 7#11 7#12 7#13 7#14 7#15 745.0 748.0 751.0 754.0 757.0 760.0 749.3 755.3 Optical fiber terminal point starting point 1#thermometer 2#thermometer 3#thermometer “U” bar Optical fiber terminal point starting point 1#thermometer 2#thermometer 3#thermometer “U” bar Optical fiber 1428