EVALUASI PENURUNAN KONSOLIDASI TANAH DI SEMARANG UTARA BERDASARKAN KORELASI N-SPT DENGAN mv
DOI:
https://doi.org/10.22441/jrs.2018.v07.i1.01Keywords:
penurunan tanah, konsolidasi, Semarang Utara, tanah endapan, mudah mampatAbstract
Dampak negatif penurunan tanah di Kota Semarang bagian utara telah dirasakan oleh masyarakat selama bertahun-tahun. Penurunan tanah yang dibarengi dengan abrasi pantai, intrusi air laut dan banjir pasang air laut ke permukiman penduduk semakin memperparah kerusakan fisik dan lingkungan. Kondisi tanah penyusun yang didominasi oleh tanah endapan alluvium dengan konsistensi sangat lunak sampai medium dan mudah mampat mendorong proses konsolidasi diprediksi akan terus berlangsung untuk waktu yang sangat lama. Oleh sebab itu, perlu dilakukan kajian geoteknik berkelanjutan untuk mengevaluasi penurunan konsolidasi di Semarang Utara. Tujuan penelitian ini adalah untuk memprediksi besar dan laju penurunan tanah akibat konsolidasi. Adapun parameter konsolidasi untuk setiap kedalaman lapisan tanah yang ditinjau ditentukan dari hasil korelasi antara N-SPT dengan mv. Hasil perhitungan dengan metode 1 D Terzaghi menunjukkan bahwa besar penurunan tanah cukup bervariatif untuk jangka waktu sangat lama, tergantung pada ketebalan lapisan konsolidasi dan beban permukaan. Simulasi numeris menggunakan SIGMA/W diberikan sebagai perbandingan dalam perhitungan ini.Downloads
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