| 摘要 |
PROBLEM TO BE SOLVED: To provide a reinforcement method for a rockfall prevention fence capable of increasing height and enhancing strength. ! SOLUTION: With a retaining wall block B comprising a penetration hole 10 into which a prop 1 and a column pipe 20 is inserted, under a state where a new retaining wall block B is arranged on the upper surface of existing retaining wall W and the prop 1 is inserted into the penetration hole 10, the prop 1 is covered with a column pipe 20, the column pipe 20 is engaged with the penetration hole 10 and fixation agent is introduced into the hollow part of the column pipe 20 so that the column pipe 20 is fixed on the existing prop 1 and the retaining wall block B. In addition, a hollow space 11 of the retaining wall block B is filled up with the fixation agent so as to be fixed on the existing retaining wall W. Furthermore, a new wire 2 and a guard net 3 are attached on the column pipe 20. When the fixation agent is introduced into the hollow part of the column pipe 20 a |
