Pengendalian Banjir Di Kecamatan Gresik

Setiawan, Oky and Achmad, Zainuddin R.M (2014) Pengendalian Banjir Di Kecamatan Gresik. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Permasalahan banjir merupakan salah satu permasalahan umum yang sering terjadi di sebagian wilayah Indonesia, misalnya di Kecamatan Gresik Kabupaten Gresik. Perkembangan di Kota Gresik terjadi karena adanya pertumbuhan jumlah penduduk yang pesat, yang membutuhkan berbagai infrastruktur baru seperti perumahan, jalan, perkantoran, pabrik dan lain-lain. Lahan yang semula rendah dan kosong ditimbun untuk dibangun berbagai infrastruktur tersebut dan kawasan kecamatan Gresik yang semula tidak padat tumbuh menjadi semakin padat. Perkembangan Kawasan kota Gresik ternyata diikuti oleh munculnya genangan banjir dibeberapa tempat, hal ini terjadi karena perkembangan kawasan kota tidak diikuti oleh pembangunan sistim drainasenya yang memadai. Saluran drainase kota Gresik yang sebagian besar terletak di daerah dataran rendah sehingga pada saat elevasi air Sungai yang berada disekitar wilayah Gresik seperti Kali Lamong cukup tinggi maka saluran drainase khususnya saluran Primer Pulo Pancikan tidak dapat berfungsi lagi. Akibatnya setiap musim hujan Kabupaten Gresik selalu tergenang banjir. Untuk mengatasi genangan banjir penampang saluran pada sistim drainase Pulo pancikan harus dinormalisasi. Untuk menormalisasi jaringan saluran drainase telah dihitung Kapasitas maksimum saluran (Full bank capacity), dan debit banjir rencana. Saluran drainase tersier direncanakan dengan debit banjir periode ulang 2 tahun, saluran sekunder dengan periode ulang 5 tahun dan saluran drainase primer direncanakan dengan debit banjir periode ulang 10 tahun. Perbandingan antara besarnya kapasitas maksimum saluran dengan debit banjir rencana, menunjukkan bahwa dari total 28 ruas saluran, sebanyak 12 ruas saluran terjadi luapan banjir. Hal ini menunjukkan bahwa sebagian besar penampang saluran eksisting terlalu kecil sehingga harus dinormalisasi berdasarkan debit banjir rencana. Untuk merencanakan dimensi saluran menggunakan rumus Manning. Koordinasi antar instansi terkait dan peran masyarakat juga perlukan dalam mencegah masalah banjir. Selain itu, penanggulangan banjir harus dilakukan secara komprehensif dengan mempertimbangkan beberapa studi kelayakan seperti aspekteknis, sosial, ekonomi, hukum, kelembagaan dan lingkungan. Oleh karena itu, kerjasama dan koordinasi antar instansi terkait dan masyarakat sangat diperlukan dalam penanggulangan banjir dengan cara normalisasi afvoor, sistem tampungan, dan sistem drainase pompa. ====================================================================== The problem of flooding is one of the common problems that often occur in parts of Indonesia, such as in Sub Gresik Gresik. Developments in Gresik is due to the rapid population growth, which requires a variety of new infrastructure such as housing, roads, offices, factories and others. Land that once low and empty stockpiled to build the infrastructure and the region of Gresik districts previously not grow into increasingly dense solid. Gresik city area development was followed by the rise of floodwaters in some places, this happens because of the development of the city region is not followed by the development of an adequate drainage system. Gresik city drainage channels which are mostly located in low-lying areas so that when the river water elevation that was around the area of Gresik as time Lamong high enough then the primary drainage channel especially Pulo Pancikan can not function anymore. Consequently every rainy season Gresik always flooded. To cope with the channel cross-section floodwaters at Pulo pancikan drainage system must be normalized. To normalize the drainage network has calculated the maximum channel capacity (Full bank capacity), and the flood discharge plan. Tertiary drainage channels planned to discharge flood return period of 2 years, the secondary channel with a return period of 5 years and the primary drainage channel is planned to discharge flood return period of 10 years. Comparison between the magnitude of the maximum capacity of the channel with the flood discharge plans, showed that of a total of 28 sections of channels, as many as 12 sections of an overflow flood channels. This indicates that most of the existing channel cross section is too small and should be normalized based on flood discharge plan. To plan the dimensions of the channel using the Manning formula. Coordination among relevant agencies and the role of the public also need to prevent flooding problems. In addition, flood prevention must be done in a comprehensive manner by considering several feasibility studies as aspekteknis, social, economic, legal, and institutional environment. Therefore, cooperation and coordination between relevant agencies and the community is necessary in the prevention of flooding by normalization afvoor, bin systems, drainage systems and pumps.

Item Type: Thesis (Diploma)
Additional Information: RSS 627.4 Set p
Uncontrolled Keywords: Banjir, Penanggulangan Banjir, Kabupaten Gresik, Flood, Flood, Gresik regency.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > (D3) Diploma
Depositing User: Mrs Anis Wulandari
Date Deposited: 24 Aug 2017 02:56
Last Modified: 24 Aug 2017 02:56
URI: http://repository.its.ac.id/id/eprint/48751

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