Analysis of the application of injection wells in the Undip Tembalang campus area as an effort to reduce drainage flow loads

Abstract

Increased infrastructure development in the Undip Tembalang Campus Area causes an increase in the frequency of floods and inundation, as well as a decrease in groundwater availability Undip still uses groundwater wells as the primary source to meet clean water needs. One alternative to groundwater conservation is to inject rainwater using infiltration wells. The hydrology analysis was carried out using the EPA SWMM 5.2 software, while the hydraulic analysis was carried out by dredging the sediment along the channel. Calculation of planned infiltration wells is calculated according to SNI 03-2453-2002. The dimensions of this infiltration well are designed to be 1 m in diameter and 18 m deep. Based on the results of the analysis, it found that runoff in the Undip Campus Area was 66,467.97 litres/second. The calculation results show that the Undip Campus Area requires 1350 infiltration wells with a rainwater harvesting volume of 14148 m3. The total runoff that can be reduced using infiltration wells is 45,978.74 litres/second or 69% of the total runoff. This plan is hoped to be an alternative water source in the Undip Tembalang Campus Area.