Atık Barajı Sızıntı Analizi Geçirimlilik Kazılabilirlik Taşıma Kapasitesi
Gümüştaş Madencilik A.Ş.
Yazarlar, bu çalışmayı destekleyen, çalışma süresince bütün olanaklarından yararlandığı Gümüştaş Madencilik A.Ş.’ye, yardımlarını esirgemeyen Genel Koordinatör Erdal Güldoğan’a, Uğur Ölgen ve Korhan Çubukçu’ya teşekkür eder.
In this study, excavatability, bearing capacity and
permeability characteristics of rock masses along the Gümüştaş Waste Storage
Dam II site were evaluated. For the excavations to be carried out to increase
the volume of the waste storage area, the excavation classes of the rock masses
were determined as “Hammer “for andesitic breccia and “Hammer&Blasting” for
andesite. The bearing capacity of
andesite (bedrock) has been determined with the help of empirical equations and,
allowable bearing capacity and ultimate bearing capacity were calculated as
10.44MPa and 31.07MPa, respectively. The permeability has been assessed by the
Lugeon Tests conducted in the geotechnical drill holes located in the andesite
and andesitic breccia rock masses and with the aid of the seepage analysis
based on the finite element method and, the bedrock mass has been defined as
low permeable. Low permeable rock masses would possibly cause the chemical
wastes to be collected in the waste dam reservoir area to pollute the
groundwater. To prevent the seepage, impermeable natural clay material of 35-40cm
thickness should be laid and compressed along the dam axis and reservoir area.
This suggestion was modeled with the aid of the finite element method, for the
case that the reservoir area was completely filled with wastewater and, the
permeability value was determined as 5x10-11m/s as a result of the seepage
analysis. In addition, seepage values in the discharge section at a depth of
10m from the foundation vary between 1.69x10-17m3/s and
3.44x10-16m3/s. These values are quite small but, are
indicators of a possible seepage. To eliminate this possible seepage, the
geotextile materials (geosynthetic clay membrane, Geomembrane, and drainage
geocomposite) should be laid over the compressed natural clay layer, and thus mixing
of the chemical wastewater, which collected after flotation, into the
groundwater will be prevented.
Waste Dam Permeability Excavatability Seepage Analysis Bearing Capacity
Birincil Dil | Türkçe |
---|---|
Konular | Mühendislik |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 15 Temmuz 2020 |
Gönderilme Tarihi | 15 Şubat 2020 |
Kabul Tarihi | 21 Nisan 2020 |
Yayımlandığı Sayı | Yıl 2020 Cilt: 10 Sayı: 3 |