STUDY PERENCANAAN BANGUNAN BRONJONG PADA SUNGAI OGAN DI KELURAHAN SUKAJADI KECAMATAN BATURAJA TIMUR KABUPATEN OKU

Abstract

This research was conducted in Sukajadi Village, Baturaja Timur District, OKU Regency. Data analysis techniques in this study using quantitative analysis techniques are techniques used to analyze quantitative information (data that can be measured, tested and informed in the form of equations and tables). Based on calculations using the Direct Stages Method for the 50-year return period, it is obtained that the discharge Q50 in sections I – I = 1,253,300 m3/s, Q50 in sections II – II = 1,281,300 m3/s, and Q50 in sections III – III = 1,285 ,200 m3/s on the Ogan River. Based on the flood return discharge obtained, the stability of the gabion strength is calculated, against the flood discharge that occurs, and a control analysis is carried out on the stability of the gabion crib in section II, it is obtained that the holding moment is 67,100 tons meters and the overturning moment 8,487 tons meters, and the magnitude of the vertical force = 37,400 tons and horizontal force = 5,004 tons, in sections II-II obtained a holding moment of 62,700 tons meters and a rolling moment of 8,926 tons meters, and the magnitude of the vertical force = 35,200 tons and horizontal forces = 5,579 tons, in sections III-III obtained a holding moment of 50,325 ton meter and overturning moment 12,621 ton meter, and the magnitude of vertical force = 29,700 ton and horizontal force = 5,513 ton, capable of resisting overturning, eccentricity, soil bearing capacity and against shear. The design and size of gabions that are suitable for this planning study are gabions of form I code D with a stone size of 40 cm. The gabion structure is composed of several gabion boxes with dimensions of 2.0 x 1.0 x 1.0 m. The laying of the gabion building on the cliff of the Ogan river in Sukajadi Village starts from crossing the A11 – A19 rivers along the 100 m. The budget for planning the construction of gabions on the Ogan river bank in Sukajadi Village is IDR 188,250,000.00. Planning for the construction of gabions on the Ogan river bank in Sukajadi Village will be carried out within one month and will begin in July the first week.