BİR MADEN SAHASINDA KAYA KÜTLESİ HİDROLİK İLETKENLİĞİNİN ÇOKLU REGRESYON YÖNTEMİ İLE KESTİRİMİ

Öz

Yeraltı suyunun madencilik faaliyetlerinden kazı faaliyetlerinden kazı ve tahkimat sistemlerine doğrudan etkisi bulunmaktadır. Bu nedenle kaya kütle permeabilitesinin araştırılması ve incelenmesine ihtiyaç duyulmaktadır. Lugeon testi bir kaya kütlesinin permeabilitesinin ölçülmesinde kullanılan yerinde deneylerden biridir. Süreksizliklerin konumu, sıklığı, açıklığı, yüzey kalitesi, dolgu varlığı ve tipi kaya kütlesinin geçirgenliğinde önemli rol oynar. Yaygın olarak kullanılan RQD (Kaya Kalite Göstergesi) ve Dc (RMR sisteminin süreksizlik durum puanı) kaya kütlesinin permeabilitesinin kestiriminde kullanılmak üzere seçilmiştir. Buna ek olarak süreksizliklerin birbirine olan temasını doğrudan etkileyen arazi gerilmesi, derinlik dikkate alınarak kestirim çalışmalarına dâhil edilmiştir. Kaya kütlesinin permeabilitesi karmaşık bir mekanizmaya sahip olduğu öngörülerek, çoklu regresyon yöntemi kaya kütle parametreleri ile Lugeon değerinin ilişkilendirilmesinde kullanılmıştır. Sunulan eşitlikler benzer saha koşullarında kullanılabilse de arazi testlerinin temel alınması gerektiği hatırlanmalıdır.

Anahtar Kelimeler

• Kaya kütlesi permeabilitesi,kaya kütlesi,yeraltı suyu,Lugeon

ESTIMATION OF ROCK MASS PERMEABILITY IN A MINE SITE BY USING MULTIPLE REGRESSION METHOD

Öz

Groundwater has a direct impact on the excavation operations and support systems of underground mining activities. Therefore, it is necessary to investigate the rock mass permeability. Lugeon test is one of the in-situ tests being used for measurement of the rock mass permeability. Discontinuity orientation, spacing, aperture, surface quality, the presence and type of filling play important role in the permeability of the rock mass. Commonly used parameters, RQD (Rock Quality Designation) and Dc (Discontinuity Condition Rating of the RMR) were selected for prediction of the rock mass permeability. Additionally, the field stress directly influencing the interlocking of the discontinuities is taken into account in terms of depth and included in the predictions. Foreseeing that the rock mass permeability has a complex mechanism, multiple regression methods were employed in order to relate rock mass parameters with Lugeon value. Although the presented equations can be used in similar field conditions, it must be recalled that the in-situ testing remains to establish a basis for the investigations.

Anahtar Kelimeler

• Rock mass permeability,rock mass,groundwater,Lugeon

Kaynakça

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