대심도 빗물저류배수시설 감세지 유무에 따른 바닥면 압력변화에 대한 실험 연구

Abstract

To prevent against urban floods, deep rainwater storage and drainage system have emerged as the ultimate solution for urban floods. In this study, we analyzed the changes in floor pressure depending on the with or without of the plunge pool and the depth through hydraulic experiments. The hydraulic experiment was conducted on a total of 28 types which 4 plunge pool depths and 7 inflow conditions. The experimental results show that the deeper the ground plunge pool depth, the lower the standard deviation and variance of the bottom pressure and the more the pressure stabilizes, but the effect of the hydrostatic pressure on the plunge pool depth increases the overall pressure. In addition, when hydrostatic pressure is included, the bottom pressure is 2.0 to 1.4 times the hydrostatic pressure, and when hydrostatic pressure is excluded, it is analyzed to be 1.0 to 0.4 times the hydrostatic pressure. If further research is conducted on changes in bottom pressure according to the depth of the vertical shaft - depth of the plunge pool, it is believed that economic and safety design guidelines for deep rainwater storage and drainage system can be presented.