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All Journal TEKNIK EMPATI Bhamada: Jurnal Ilmu dan Teknologi Kesehatan (E-Journal) Bhamada: Jurnal Ilmu dan Teknologi Kesehatan (E-Journal)

Najib Najib

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Author-ID : 2617594

Engineering Environmental Science Health Professions Medicine & Pharmacology Nursing Public Health Social Sciences

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PERHITUNGAN POTENSI BAHAN TAMBANG SIRTU DI WILAYAH SUNGAI DI KABUPATEN PEKALONGAN Najib Najib
TEKNIK Vol 30, No 3 (2009)
Publisher : Diponegoro University

Pekalongan Residence has a relatively many sand and gravel deposits particularly in river area. Nowadays,many locations have been exploited by local residences or investors from other regions. Even though theexploitation has running, up to now the local government doesn’t know yet how many reserve indicationmaterial deposits in that area. As the result of that condition, it is called for the research to determine thepotential of mining resources in river area. The factors estimate the mining potential based on geologicconditions such as elevation and deposit types. This research use grid and trapezium method. Based onlaboratories tests showed that the dominant materials in that area is up to sand size(around 87 – 98%). Thepotential of deposits is divided into three i.e. river part, levee part and land part. The total of potential in eachdistrict are Kesesi (515.625 m3), Kajen (78.295m3), Karanganyar (1.938.751m3), Wonopringgo( 1.334.375 m3),Doro( 1.984.375 m3), Talun( 1.355.625 m3), Karangdadap( 140.150 m3) and Kedungwuni( 130.000 m3).

PENYUSUNAN DOKUMEN POTENSI BAHAN TAMBANG DI LUAR WILAYAH SUNGAI KABUPATEN PEKALONGAN Najib Najib
TEKNIK Vol 31, No 2 (2010)
Publisher : Diponegoro University

Besides in River area, Pekalongan Regency estimated has mineral potential in some areas outside of that area.Yet local government doesn’t have data about the potency of that mineral. In consequence, it is needed toconducts mapping of mineral potency outside of river circumstance that the result will be used by localgovernment either guide taking policy in exploitation or regulation to that activity. This research used somesteps i.e. measurement and mapping phase, analysis and data processing (hypothetic reserve calculation andlaboratory mineral tests such as AAS, petrography and shear strength) and data compilation. The potency ofminerals and rocks is disseminated in 14 districts in Pekalongan Regency. Types of those mine materials areAndesite, Diorite, Limestone, Tras, Clay, Ochre, Gold and iron sand. Mining systems possibly conducted are PitType System, Eunuch Hill System and Cave System.

PENYUSUNAN RENCANA INDUK PENANGANAN KAWASAN RAWAN BENCANA DI KABUPATEN SINTANG, KALIMANTAN BARAT Najib Najib; Wahju Krisna Hidayat
TEKNIK Vol 30, No 2 (2009)
Publisher : Diponegoro University

Sintang Residence is a region which has susceptible region of natural disaster mainly landslide and flood.As the result of that vulnerability, it is needed to do the research to determine zonation of susceptibility ofdisaster. Zonation of landslide is based on four parameters such as slope, annual rainfall, geology factorsand land use. Zonation of flood is based on monthly/daily rainfall, land use, topographic condition andflood terrains. Based on secondary data and primary data, Sintang residence can be divided into threesusceptibility landslide zones, i.e. intermediate, low and very low susceptible landslide zones. Susceptibleflood zones are divided into three zones i.e. high, intermediate and low susceptible flood zone. Landslidesin that area are happened due to some factors; among other things are the rocks weathered, high slopedirection and no retaining wall. Flood is happened mostly due to the position of residences which straightforward or less height toward river water level and that location near with the rivers. Flood occupied theresidences mostly pass terrain edge river or pass by Sub River or rubbish ditch that ended in the mainriver. The purposes of mitigation those disasters based on the land use

STUDI KERUSAKAN LINGKUNGAN AKIBAT PENAMBANGAN BGGC WILAYAH SUNGAI DI KABUPATEN PEKALONGAN Najib Najib
TEKNIK Vol 32, No 2 (2011)
Publisher : Diponegoro University

Pekalongan Residence has a relatively many sand and gravel deposits particularly in river area. Nowadays,many locations have been exploited by local residences or investors from other regions. Sand and gravel miningis being done since 1980s, that’s why it can created devastated land in that surrounding area of mining. As theresult of that condition, it is called for the research to determine how devastated land condition during or aftermining. Factors used in this research to determine devastating land are mining technique, rate of mining, depthof slope mining, width of mining hole, relief of digging base, characteristics of material slope, tilt of diggingslope, reserving of top soil and overburden, erosion stage, vegetation cover, reclamation. Devastated landbased on mining has vary in low and high scale. In the gullies river,most of them in low devastated landcondition. Meanwhile, devastated land in border of river vary in low up to high. Several places which are havehigh devastated land are Sastrodirjan (Wonopringgo District), Dororejo(Doro District) and Krompeng (TalunDistrict). In deposit bar, has low up to high devastated land. High devastated land are Pododadi (Karanganyardistrict), Sastrodirjan (Wonopringgo district) and Kaligawe (Karangdadap district).

STUDY OF THE PIEZOMETRIC SURFACE AND HYDROCOMPACTION AT CONFINED AQUIFER CAUSED THE LAND SUBSIDENCE IN SEMARANG Fahrudin Fahrudin; Najib Najib
TEKNIK Vol 32, No 1 (2011)
Publisher : Diponegoro University

Semarang city has experienced of the land subsidence that be caused by intake groundwater in confined aquiferabundant. The land subsidence happened during range of time 20 years, it’s critical boundary so that result theenvironmental damage. Hence needed a study of cause of the land subsidence. This study aim to know theposition of piezometric surface and also explain the mechanism hydrogeology when happened the landsubsidence. The study of spreading aquifer has been done by the analysis of secondary data which is in the formof drilling log data, piezometric surface and soil mechanics test obtained from PLG (Environmental Center ofGeology) Bandung. Later then, between the land subsidence and piezometric surface be overlay becamezonation. From the data made a analysis of cause of the land subsidence. This aquifer has the land subsidence.The land subsidence explainable with the experienced phenomenon fact for example degradation of piezometricsurface at confined aquifer and process of hydrocompaction. That process influenced by two factors that areassess the pore number (e) and specific gravity (Gs). The degradation of piezometric surface formed the trapezeof water table until 20 m from sea level with the mean 0.7 - 1.1 m/year. Hydrocompaction cause the degradationof number of mean pore 0.145 - 0.5 and specific gravity 0.009 - 0.073 . The degradation of piezometric surfaceand process the hydrocompaction cause the fast of land subsidence around 0.5 - 1.75 cm/year.

Co-Authors Arri Handayani Fahrudin Fahrudin Junaedi Junaedi Mujahidatul Musfiroh Retno Setyowati Wahju Krisna Hidayat

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