IDENTIFIKASI GERAKAN MASSA TERHADAP KERUSAKAN JALAN RAYA SUKOREJO-WELERI KILOMETER 6-16 KABUPATEN KENDAL
DOI:
https://doi.org/10.21831/gm.v14i1.13780Abstract
Abstrak
Penelitian ini bertujuan mengetahui: (1) Karakteristik gerakan massa, meliputi tipe, jumlah, dan distribusi keruangan, (2) Faktor yang penyebab dan pemicu gerakan massa, (3) Jenis kerusakan jalan pada setiap gerakan massa. Populasi dalam penelitian ini adalah lahan di sekitar jalan raya Sukorejo-Weleri Km 6-16. Sampel diambil secara purposive sampling yaitu tempat yang mengalami gerakan massa. Analisis data dengan analisis deskriptif, tetangga terdekat, dan analisis tabel. Hasil penelitian: (1) Gerakan massa terdiri atas tiga tipe, yaitu longsor rotasional, rayapan, dan jatuhan. Pola distribusi menyebar. (2) Longsor rotasional disebabkan kemiringan lereng miring-curam, solum tanah tebal, kekar, dan batuan melapuk sangat lanjut. Pemicu utamanya pemotongan kaki perbukitan. Rayapan disebabkan kemiringan lereng miring-curam dan kembang kerut tanah. Pemicu utamanya pembuatan teras bangku. Jatuhan disebabkan kemiringan lereng curam-sangat curam dan banyak rekahan batuan. Pemicunya air hujan yang masuk melalui rekahan. (3) Kerusakan jalan disebabkan longsor rotasional adalah timbunan material dan amblesan, rayapan berupa retakan dan jalan bergelombang, jatuhan berupa timbunan batuan.
Kata kunci: gerakan massa, jalan raya, kerusakan jalan
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Geo Media: Majalah Ilmiah dan Informasi Kegeografian is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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