Causes of Bursa Yıldırım district Mollaarap landslide and its improvement studies

Yıl 2020, Cilt: 26 Sayı: 8, 1408 - 1412, 10.12.2020

Özkan Coruk Aydın Kavak

Öz

The slopes at the north of Uludağ, where there is an unplanned and dense settlement, have landslide potential in terms of engineering geology. In this study, the causes of the landslide occurring as a result of the uncontrolled excavation carried out on the slope with landslide potential and the improvement or control studies were investigated. With the disturbance of the slope stability, settling and deformations on the upper part of the slope increased, and then 8 decares of area was affected by the flow and sliding mass movements on the slope, and approximately 80 houses in this section were evacuated for safety purposes. As a result of the researches and investigations made in the landslide field, an engineering geology model is revealed Geotechnical properties of geological units and the depth of slip surface were determined by the field and laboratory studies. Prevention and support projects are prepared according to geotechnical properties. As a first measure within the scope of the project, the construction of the support structure consisting of double rows of bored piles in the toe cut was then controlled by the production of a three levelled support structure. This study is a typical example where uncontrolled excavations without consideration of engineering geology and geotechnical conditions cause serious costs and other grievances.

Anahtar Kelimeler

Landslide, Uncontrolled excavations, Landslide control methods

Kaynakça

• [1] Di Martire D, De Rosa M, Pesce V, Santangelo MA, Calcaterra D. “Landslide hazard and land management in high-density urban areas of Campania region, Italy”. Natural Hazards and Earth System Sciences, 12(4), 905–926, 2012.
• [2] Nolesini T, Frodella W, Bianchini S, Casagli, N. “Detecting Slope and Urban Potential Unstable Areas by Means of Multi-Platform Remote Sensing Techniques: The Volterra (Italy) Case Study”. Remote Sensing Open Access Journal, 8(9), 746-764, 2016.
• [3] Bandara RMS, Jayasingha P. “Landslide disaster risk reduction strategies and present achievements in Sri Lanka”. Geosciences Research, 3(3), 21-27, 2018.
• [4] Kenar, F, Pehlivan, Ş, Kandemir, Ö, Tok, T, Korhan, Ç. 1:100 000 ölçekli Türkiye Jeoloji Haritaları, Bursa-H22 Paftası. Ankara, Türkiye, MTA Yayını, 2013.
• [5] Emre, Ö, Doğan, A, Duman, TY, Özalp, S. 1:250.000 Ölçekli Türkiye Diri Fay Haritası Serisi, Bursa (NK 35-12) Paftası. Ankara, Türkiye, MTA Yayını, 2011.
• [6] Coruk Ö, Kavak A. “Bursa ili, Yıldırım ilçesi, Mollaarap mahallesi, Hüsamettin Tekke sokak ile Gürgür sokak arasındaki kazı şevinde oluşan heyelana ait teknik değerlendirme raporu”. KOÜ-TTO-2018-SÖZ-22, AR-GE Projesi, 2018. (Unpublished).