Analisis Rembesan Pada Perencanaan Pembangunan Bendungan Logung,  Kabupaten Kudus, Jawa Tengah

Setyawati, Heni; Najib, Najib; Hidayatillah, Ahmad Syauqi

doi:10.14710/jgt.1.3.2018.99-106

Cited by 3 publications

(2 citation statements)

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“…Permasalahan yang umumnya terjadi ditubuh bendungan maupun dibawah tubuh bendungan adalah rembesan, karena aliran rembesan tersebut dapat membawa butiran halus material penyusun dan jika berlangsung terus menerus menyebabkan erosi pondasi [8]. Erosi bawah tanah atau piping yang terjadi dibawah tubuh bendungan harus dilakukan pengecekan karena akan menyebabkan keruntuhan [9].…”

Section: Tahapan Analisisunclassified

Angka Keamanan Piping di Bawah Tubuh Bendungan dengan Metode Harza

Kusumastuti

Alghoida

2021

forummekanika

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Abstract Dams have many benefits such as irrigation, flood prevention, power generation and even tourism, especially in areas where the dam is located. So that the benefits received can last a long time, in the planning, it must be analyzed for stability, seepage discharge that occurs and the safety of the piping. The piping hazard safety figures in this study were calculated using the Harza method for maximum water level conditions, normal water levels, fast receding and empty dams at sta 0 + 150, sta 0 + 200, sta 0 + 250 and sta 0 + 300. Based on the calculation results, it is found that the safety of piping hazards without filters with the grouting method do not meet the requirements safety factor, especially in conditions of maximum water level, normal water level and fast receding. In order for the safety of piping hazard in order to meet the requirements, a filter is applied under the dams. The filter is applied so that the piping hazard safety figure meets the requirements of all water level conditions and all station is 80 cm deep. Keywords: safety factor, piping, Harza method, filter ABSTRAK Bendungan memiliki banyak manfaat seperti irigasi, pencegah banjir, pembangkit listrik bahkan pariwisata khususnya pada wilayah dimana bendungan tersebut berada. Agar manfaat yang diterima dapat berlangsung lama maka dalam perencanaannya wajib dianalisis terhadap stabilitas, debit rembesan yang terjadi maupun keamanan dari piping. Angka keamanan bahaya piping pada penelitian ini dihitung dengan menggunakan metode Harza untuk kondisi muka air maksimum, muka air normal, surut cepat dan bendungan kosong di sta 0+150, sta 0+200, sta 0+250 serta sta 0+300. Berdasarkan hasil perhitungan didapatkan bahwa angka keamanan bahaya piping tanpa penggunaan filter dengan metode grouting tidak memenuhi persyaratan angka keamanan khususnya pada kondisi muka air maksimum, muka air normal dan surut cepat. Agar angka keamanan bahaya piping memenuhi persyaratan maka diaplikasikan filter dibawah tubuh bendungan. Filter yang diaplikasikan agar angka keamanan bahaya piping memenuhi persyaratan diseluruh kondisi muka air dan seluruh sta adalah dengan kedalaman 80 cm. Kata kunci: angka keamanan, piping, metode Harza, filter Abstract Dams have many benefits such as irrigation, flood prevention, power generation and even tourism, especially in areas where the dam is located. So that the benefits received can last a long time, in the planning, it must be analyzed for stability, seepage discharge that occurs and the safety of the piping. The piping hazard safety figures in this study were calculated using the Harza method for maximum water level conditions, normal water levels, fast receding and empty dams at sta 0 + 150, sta 0 + 200, sta 0 + 250 and sta 0 + 300. Based on the calculation results, it is found that the safety of piping hazards without filters with the grouting method do not meet the requirements safety factor, especially in conditions of maximum water level, normal water level and fast receding. In order for the safety of piping hazard in order to meet the requirements, a filter is applied under the dams. The filter is applied so that the piping hazard safety figure meets the requirements of all water level conditions and all station is 80 cm deep. Keywords: safety factor, piping, Harza method, filter ABSTRAK Bendungan memiliki banyak manfaat seperti irigasi, pencegah banjir, pembangkit listrik bahkan pariwisata khususnya pada wilayah dimana bendungan tersebut berada. Agar manfaat yang diterima dapat berlangsung lama maka dalam perencanaannya wajib dianalisis terhadap stabilitas, debit rembesan yang terjadi maupun keamanan dari piping. Angka keamanan bahaya piping pada penelitian ini dihitung dengan menggunakan metode Harza untuk kondisi muka air maksimum, muka air normal, surut cepat dan bendungan kosong di sta 0+150, sta 0+200, sta 0+250 serta sta 0+300. Berdasarkan hasil perhitungan didapatkan bahwa angka keamanan bahaya piping tanpa penggunaan filter dengan metode grouting tidak memenuhi persyaratan angka keamanan khususnya pada kondisi muka air maksimum, muka air normal dan surut cepat. Agar angka keamanan bahaya piping memenuhi persyaratan maka diaplikasikan filter dibawah tubuh bendungan. Filter yang diaplikasikan agar angka keamanan bahaya piping memenuhi persyaratan diseluruh kondisi muka air dan seluruh sta adalah dengan kedalaman 80 cm. Kata kunci: angka keamanan, piping, metode Harza, filter

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Section: Tahapan Analisisunclassified

Angka Keamanan Piping di Bawah Tubuh Bendungan dengan Metode Harza

Kusumastuti

Alghoida

2021

forummekanika

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“…The Tugu Dam in Trenggalek Regency, built on the Keser River, is part of a national strategic project to develop the potential of water resources in the Brantas River Region, namely flood control Baku water supply and potential for mini-hydropower plants [1]. With the construction of the Tugu Dam, it is hoped that it will provide benefits in the field of irrigation and the provision of clean water for the community around the dam to benefit the welfare and prosperity of the downstream community [2].…”

Section: Introductionmentioning

confidence: 99%

Curtain Grouting To Reduce Seepage Foundation Access Road To The Top Of The Dam At Tugu Dam

Supriono

Candra

Poernomo

2022

UKaRsT

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The construction of a complementary access road to the top of the dam is to the left of the Tugu dam pedestal. Based on geological studies, it is feared that there is a potential for seepage that passes through the left pedestal through joints, fractures, and fault areas/rock layers below the foundation surface. To anticipate this, the allowable seepage requirement is the lugeon value (Lu) < 3. This study aims to determine the geological conditions and the amount of seepage before and after foundation repairs are carried out using the grouting method. The type of this research is field research, qualitative descriptive because this research tries to collect lugeon population and cement material absorbed into the rock from water pressure test and grouting injection work by grouping each type of hole, pilot hole, primary hole, secondary hole, tertiary hole, and check hole. The study results by taking rock cores found that the constituent rocks were volcanic breccia units and colluvial rocks. Furthermore, a water pressure test before grouting with a water passing value of (k) = 6.62E-05 to 4.73E-04 cm/sec or with a lugeon value (Lu) of 5.07 to 36.21. After repairing the foundation using rim curtain grouting, the seepage that occurs decreases with a water passing value (k) = 1.96E-05 to 3.03E-05 cm/sec or lugeon (Lu) 1.50 to 2.32, so the requirements the target value of Lu < 3 was achieved with the effectiveness in the good category.

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A study of cavitation on the spillway of Krueng Kluet Dam using physical laboratory model

Athqa,

Azmeri

2023

AIP Conference Proceedings

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Analisis Rembesan Pada Perencanaan Pembangunan Bendungan Logung, Kabupaten Kudus, Jawa Tengah

Cited by 3 publications

References 0 publications

Angka Keamanan Piping di Bawah Tubuh Bendungan dengan Metode Harza

Angka Keamanan Piping di Bawah Tubuh Bendungan dengan Metode Harza

Curtain Grouting To Reduce Seepage Foundation Access Road To The Top Of The Dam At Tugu Dam

A study of cavitation on the spillway of Krueng Kluet Dam using physical laboratory model

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