Analisa Stabilitas Bendung Gerak pada Proyek Pembanguan Bendung Sei Padang D.I Bajayu Tebing Tinggi Sumatera Utara

Abstract

The Gated Weir at The Sei Padang D.I. Bajayu is built in the river basin (RB) of Padang Tebing Tinggi. This weir is designed to accommodate irrigation (D.I Paya Lombang 1588 Ha, D.I Langau 2000 Ha and D.I Bajayu 4000 Ha) and The Flood Control of Tebing Tinggi city. The Gated Weir at The Sei Padang D.I. Bajayu should be designed with a durable structure. The stability of the weir is also very necessary because the weir works to raise the height of the air face. The targets to be known are gravity, sludge, hydrostatic, lift, and soil used as a reference for checking arches and slip styles. Based on the results of the analysis to achieve stability above the value at the normal time of the rolling force is 1.734 and the factor of slip hairstyle is 2.395. Based on these results, It can be concluded that the weirs are safe for bolsters and sliding force by applying to the level for the rolling force Sfg is > 1.5 and the slip force is Sfge > 1.5.