Thesis:

MSc:

"Assessment of Stability of Slopes at TKİ - Himmetoğlu Open Pit Mine by Using Deterministic and Probabilistic Methods.", 1999. Hacettepe University, Dept. of Geological Engineering, Ankara, 167pp. (in Turkish).

PhD:

"An Investigation on the Applicability of Acoustic Emission (AE) Technique in the Determination of In-situ Stresses", 2006. Hacettepe University, Dept. of Geological Engineering, Ankara, 206pp. (in Turkish).

Papers Published in International Journals:

Ulusay, R., Gökçeoğlu, C., Sönmez, H. and Tuncay, E., 2001. Causes, mechanism and environmental impacts of instabilities at Himmetoğlu coal mine and possible remedial measures. Environmental Geology, 40(6), 769-786.

Tuncay, E., and Ulusay, R., 2001. Deterministic and probabilistic treatments of multiplanar pitwall failures at Himmetoğlu (Turkey) coal mine. Canadian Geotechnical Journal, 38(4), 828-849.

Ulusay, R., Aydan, Ö., Erken, A., Tuncay, E., Kumsar, H., and Kaya, Z. 2004. An overview of geotechnical aspects of the Çay-Eber (Turkey) earthquake. Engineering Geology, 73(1-2), 51-70.

Sönmez, H., Tuncay, E., Gökçeoğlu, C., 2004. Models to predict the uniaxial compressive strength and the modulus of elasticity for Ankara agglomerates. International Journal of Rock Mechanics and Mining Science. 41(5), 717-729.

Ulusay, R., Tuncay, E., Sönmez, H., and Gökçeoğlu, C., 2004. An attenuation relationship based on Turkish strong motion data and iso-acceleration map of Turkey. Engineering Geology, 74(3-4), 265-291.

Sönmez, H., Gökçeoğlu, C., Tuncay, E., Medley, E, W, and Nefeslioglu, H.A., 2004. Relationships between volumetric block portion and overall UCS of a volcanic Bimrock. Felsbau Rock and Soil Engineering - Journal for Engineering Geology, Geomechanics and Tunnelling, 5, 27-34.

Ulusay, R., Tuncay, E., Sönmez, H., and Gökçeoğlu, C., 2005. Reply to Discussion by G. Kalkan and P. Gülkan on “Attenuation relationship based on Turkish strong motion data and iso-acceleration map of Turkey” by Ulusay et. al., Eng. Geol., 74: 265-291 (2004). Engineering Geology, 79(3-4), 291-292.

Ulusay, R., Tuncay, E., Sönmez, H., and Gökçeoğlu, C., 2005. Reply to Discussion by K. Kayabali on “Attenuation relationship based on Turkish strong motion data and iso-acceleration map of Turkey” by Ulusay et. al., Eng. Geol., 74: 265-291 (2004). Engineering Geology, 79(3-4), 296-299.

Sönmez, H., Gökçeoğlu, C., Medley, E, W, Tuncay, E., and Nefeslioglu, H.A., 2006. Estimating the uniaxial compressive strength of a volcanic bimrock. International Journal of Rock Mechanics and Mining Science, 43, 554-561.

Ulusay, R., Gökçeoğlu, C., Topal, T., Sönmez, H., Tuncay, E., Ergüler, Z.A. ve Kaşmer, Ö., 2006. Assessment of the environmental and geo-engineering problems for the possible abandoned rock-hewn settlement in Ürgüp (Cappadocia), Turkey. Environmental Geology, 50, 473-494.

Ulusay, R., Tuncay, E., and Hasancebi, N., 2007. Liquefaction assessments by field-based methodologies for the foundation soils at Demirözü dam site (NE Turkey). Bulletin of Engineering Geology and Environment, 66, 361-375.

Tuncay, E. and Ulusay, R., 2008. Relation between Kaiser Effect (KE) levels and prestresses applied in laboratory. International Journal of Rock Mechanics and Mining Science, 45(4), 524-537.

Tuncay, E., 2009. Rock rupture phenomenon and pillar failure in tuffs in the Cappadocia region (Turkey). International Journal of Rock Mechanics and Mining Science. 46(8), 1253-1266.

Tuncay, E., and Hasançebi, N., 2009. The effect of length to diameter ratio of test specimens on uniaxial compressive strength of rock. Bulletin of Engineering Geology and the Environment, 68(4), 491-497.

Ulusay, R, Tuncay, E., Hasançebi, N. 2010. Geo-engineering properties and settlement of peaty soils at an industrial site (Turkey). Bulletin of Engineering Geology and the environment, 69, 397-410.

Tuncay, E., and Obara, Y., 2012. Comparison of stresses obtained from Acoustic Emission and Compact Conical-Ended Borehole Overcoring techniques and an evaluation of Kaiser Effect level. Bulletin of Engineering Geology and the Environment. 71(2), 367-377.

Ulusay, R, Ekmekçi, M., Tuncay, E., Hasançebi, N. 2014. Improvement of slope stability based on integrated geotechnical evaluations and hydrogeological conceptualisation at a lignite open pit. Engineering Geology, 181, 261-280.

Tuncay, E., and Ulusay, R., 2017. Assessment of the mechanism of a slope failure in a hydroelectric power plant site and considerations on some remedial measures. Environmental and Engineering Geoscience, 23(1), 23-41.

Solak, K.C, Tuncay, E., and Ulusay, R., 2017. An investigation on the mechanisms of instabilities and safe design of the south slope at a lignite pit (SW Turkey) based on a sensitivity approach. Bulletin of Engineering Geology and the Environment, 76(4), 1321-1341.

Tuncay, E., 2018. Assessments on slope instabilities triggered by engineering excavations near a small settlement (Turkey). Journal of Mountain Science, 15(1), 114-129.

Tuncay, E., Tunar Özcan, N., Kalender, A., 2019. An approach to predict the length to diameter ratio of a rock core specimen for uniaxial compression tests. Bulletin of Engineering Geology and the Environment, 78(7), 5467-5482.

Kong, R., Tuncay, E., Ulusay, R., Zhang, X., and Feng^, X.T., 2021. An experimental investigation on stress-induced cracking mechanisms of a volcanic rock. Engineering Geology, 280, Article 105934.

Papers Published in National Journals:

Tuncay, E. ve Ulusay, R., 2000. Probabilistic kinematical approach for the assessment of discontinuity controlled slope failures and an application. Yerbilimleri (Earthsciences), Bulletin of Earth Sciences Application and Research Center of Hacettepe University, 22, 205-222. (in Turkish)

Tuncay, E. ve Ulusay, R., 2002. Acoustic Emission (AE) technique: 1- Basic principles and its areas of application in rock Engineering. Yerbilimleri (Earthsciences), Bulletin of Earth Sciences Application and Research Center of Hacettepe University, 25, 65-82. (in Turkish)

Tuncay, E., Ulusay, R., Watanabe, H., Tano, H., Aydan, Ö., and Yüzer, E., 2002. Acoustic Emission (AE) technique: 2- A preliminary investigation on the determination of in-situ stresses by AE technique in Turkey. Yerbilimleri (Earthsciences),  Bulletin of Earth Sciences Application and Research Center of Hacettepe University, 25, 83-98. (in Turkish)

Tuncay, E., 2018. Acoustic emission (AE) technique and its use in the field of geo-engineering. Yer Mühendisliği, 11, 36-45. (in Turkish)

Proceedings (International Symposiums and Congress):

Ulusay, R., Gökçeoğlu, C., Sönmez, H., and Tuncay, E., 2001. Assessment of slope deformations and redesign studies at Himmetoğlu lignite open pit, Turkey. Proceedings of ISRM Regional Symposium, EUROCK’2001, A Challenge for Society, P. Sarkka & P. Elloranta (Eds.), June 3-7, 2001, Espoo, Finland,  873-878.

Aydan, Ö., Ulusay, R., Tuncay, E. ,Sönmez, H., and Kumsar, H., 2003. Liquefaction phenomenon in the earthquakes of Turkey, including recent earthquakes between 1992 and 1999. International Workshop on the North Anatolian, East Anatolian and Dead Sea Fault Systems: Recent Progress in Tectonics and Paleoseismology, and Field Training Course in Paleoseismology, 31 August-12 September, METU, Ankara, Abstracts, p 47.  

Ulusay, R., Tuncay, E., Watanabe, H., Tano, H., and Aydan, Ö., 2003. The measurement of the stress state of Turkey by Acoustic Emission (AE) method. Proc. of the 3rd International Symposium on Rock Stress, RS KUMAMOTO ’03, K. Sugawara, Y. Obara, A. Sato (eds.), November 4-6, Kumamoto, Japan, 255-260.

Watanabe, H., Tano, H., Aydan, Ö., Ulusay, R., Tuncay, E., Bilgin, H.A., and Seiki, T., 2003. The measurement of the in-situ stress state by Acoustic Emission (AE) method in weak rocks. Proc. of the 3rd International Symposium on Rock Stress, RS KUMAMOTO ’03, K. Sugawara, Y. Obara, A. Sato (eds.),November 2-4, Kumamoto, Japan, 389-394.

Tuncay, E., Watanabe, H., and Tano, H., 2003. An overview and a study on the stress measurement by Acoustic Emission method. An International Colloquium on the Instrumentation and Monitoring of Landslides and Earthquakes in Japan and Turkey, Nihon University, H. Tano and Ö. Aydan (eds), Nowember 8, 2003, Koriyama, Japan, 123-132.

Kayabaşı, A., Sönmez, H., Gökçeoğlu, C., Tonoz, M.C., Tuncay, E., and Nefeslioğlu H.A., 2004. Mechanism and activity of a complex landslide. 5^th International Symposium on Eastern Mediterranean Geology, A.A. Chatzipetros and S.B. Pavlides (eds), April 14-20, Thessaloniki, Greece, Abstracts, Vol. 2, 715-718.

Tuncay, E., 2005. A preliminary study on evaluation of microseismic events along a fault segment using acoustic emission system. Earthquake Engineering Workshop, 21-23 March, 2005, Athens, Greece. 

Sönmez, H., Gökçeoğlu, C. , Kasapoglu, K.E., Tuncay, E., 2005. Suggested empirical equations for estimating modulus of elasticity of intact rock . EUROCK 2005, Proc. of the International Symposium of the ISRM, P. Konecny (ed), May 18-20, Brno, Czech Republic, 563-571.

Tuncay, E. and Ulusay, R. 2006. Comparisons between Kaiser Effect levels and pre-stresses applied to rock specimens in laboratory conditions. Proc. of Annual Meeting of Mining and Material Processing Institude of Japan, June 2, Fukuoka, Japan, 37-39.

Ulusay, R., Tuncay, E., Watanabe, H., Tano, H., and Aydan, Ö., 2008. Studies on in-situ stress measurements in Turkey. Proc. of the First Collaborative Symposium of Turk-Japan Civil Engineers, June 5, İstanbul, Turkey, 107-116.

Tuncay, E. and Tunar Özcan, N. 2011. An evaluation on the effect of test core shape on uniaxial compressive strength and elastic modulus of rock. Proc. of Environmental Geosciences and Engineering Survey for Territory Protection and Population Safety, EngeoPro2011, September 6-8, Moscow, Russia, 591-595.

Ulusay, R., Ekmekçi, M., Tuncay, E., Hasançebi, N., 2013. Slope optimization and design based on geotechnical and hydrogeological assessments for a new deep open pit coal mine. EUROCK2013, Rock mechanicas for Resources, Energy and Environment, Eds: M. Kwasniewski, D. Lydzba. Wroclaw, Poland, 703-708.

Proceedings (National Symposiums and Congress):

Ulusay, R., Gökçeoğlu, C., Sönmez, H. ve Tuncay, E., 1999. The investigation of active-passive wedge failure mechanism in slopes by using back-analysis and monitoring techniques: A practise in Himmetoğlu open pit. Heyelan'99, Abstracts of 3rd National Landslide Symp., May 13-15, 1999, Adana, p.18. (in Turkish)

Ulusay, R., Aydan, Ö., Kumsar, H. Sönmez, H. ve Tuncay, E., 2000. The liquefaction phenomenon observed at last earthquakes in Turkey and a general review on liquefaction potential in West Anatolian. BADSEM 2000 – Proceedings of Symposium on Earthquake Potential of the West Anatolian Region, May 24-27, 2000, İzmir, 323-336. (in Turkish)

Aydan, Ö., Ulusay, R., Tuncay, E., Kumsar, H., Yılmazoğlu, M., and Yüzer, E., 2001. Effective stress state of West Anatolia. JEOTEKNİK-III, Proceedings of Symposium on Earthquake-Geotechnicque of İzmir and Its Vicinity. Ö. Orhun ve Y. Tuner (eds.), Nov 12-16, 2001, İzmir, on CD, 1-14. (in Turkish)

Aydan, Ö., Watanabe, H., Tano, H., Tuncay, E., Ulusay, R., ve Bilgin, H.A., 2002. Stress state in Orhaneli open-pit lignite mine and its close vicinity. ROCKMEC’2002, 6th Proceedings of Regional Rock Mechanics Symposium, C. Şensöğüt, İ. Özkan (eds), October 10-11, Konya, 25-32 (in Turkish)

Ulusay, R., Aydan, Ö., Erken, A., Kumsar, H., Tuncay, E., Kaya, Z., 2003. The properties of 2002 Çay-Eber earthquake and the evaluation of local site conditions. Proceedings of 5th National Conference on Earthquake Engineering, B. Taşkın, H. Boduroğlu, P Özdemir (eds), May 26-30, Istanbul, on CD, No:AT-115, 1-10 (in Turkish)

Sönmez, H., Kaşmer, Ö. ve Tuncay, E., 2003. Determination of ultimate bearing capacity of Ankara aglomerate by using different methods. 10th years Symp. of Deth. of Geological Engineering of Mersin University, H. Çelebi, Z. Demirel, G.E. Nalcıoğlu, H. Koç (eds), October 15-18, Mersin, Turkey, Abstracts, p 131 (in Turkish)

Sönmez, H., Gökçeoğlu, C., Kasapoğlu, K.E., Tuncay, E. ve Zorlu, K., 2004. Kaya malzemesinin elastisite modülünün kestirimi için görgül bir eşitlik. KAYAMEK’2004, Proceedings of Regional Rock Mechanics Symposium, A. Ceylanoğlu, B. Erdem (eds), October 21-22, Sivas, 93-99 (in Turkish)

Ulusay, R., Tuncay, E., Sönmez, H. ve Gokçeoğlu, C., 2006. Türkiye için azalım ilişkisi ve eş-ivme haritası önerisi. 59. Türkiye Jeoloji Kurultayı Bildiri Özleri Kitabı, 374-375. (in Turkish)

Ulusay, R., Tuncay, E., Hasançebi, N., 2007. Doğu Karadeniz Bölgesindeki bir baraj yerinde sıvılaşma potansiyelinin farklı yöntemlerle değerlendirilmesi. Erdoğan Yüzer Mühendislik Jeolojisi Sempozyumu, M. Erdoğan ve H.T. Yalçın (eds), Bildiriler Kitabı, 6-7 Eylül, İstanbul, 243-252. (in Turkish)

Tuncay, E., Ulusay, R., 2007. Türkiye’ye ait veriler esas alınarak önerilmiş SPT-CPT ilişkileri. Erdoğan Yüzer Mühendislik Jeolojisi Sempozyumu, M. Erdoğan ve H.T. Yalçın (eds), Bildiriler Kitabı, 6-7 Eylül, İstanbul, 233-242. (in Turkish)

Aydan, Ö., Tano, H., Watanabe, H., Ulusay, R., Tuncay, E., 2007. Kapadokya Bölgesi’nde antik ve güncel kaya yapılarının kaya mekaniği açısından değerlendirilmesi. Kapadokya Yöresinin Jeolojisi Sempozyumu, 17-20 Ekim, Niğde, Bildiriler CD’si, 1-11. (in Turkish)

Tuncay, E., Tunar Özcan, N. ve Kalender, A., 2015. Tek eksenli sıkışma dayanımı deneyinde örneğin boy/çap oranının belirlenmesi için yeni bir yaklaşım. MÜHJEO’2015, Ulusal Mühendislik Jeolojisi Sempozyumu, R. Ulusay, M. Ekmekçi, H. Ersoy ve A. Fırat Ersoy (eds), Bildiriler kitabı, 3-5 Eylül, Trabzon, 246-253. (in Turkish)

Solak, K.C., Tuncay, E. ve Ulusay, R., 2017. TKİ Hüsamlar linyit açık işletmesi güney şevlerindeki duraysızlık mekanizmaları. MÜHJEO2017, Ulusal Mühendislik Jeolojisi ve Jeoteknik Sempozyumu, T. Çan, H. Tağa, H. Ersoy (eds), Bildiriler kitabı, 12-14 Ekim, Adana, 66-73. (in Turkish)

Fidan Üzgün, A., Tuncay, E., 2019. Tek Eksenli Sıkışma Dayanımının Farklı Boy/Çap Oranlarındaki Örneklerden Belirlenmesi Yaklaşımının Değerlendirilmesi. MÜHJEO2019, Ulusal Mühendislik Jeolojisi ve Jeoteknik Sempozyumu, H. Kumsar, S.B. Çelik, T. Çan, M. Mutlutürk (eds), Bildiriler Kitabı, 3-5 Ekim, Denizli, 39-46. (in Turkish)

Seminar-Course Notes:

Ulusay, R., Gökçeoğlu, C., Sönmez, H. ve Tuncay, E., 2001. Additional notes to referenced publication for the education seminar about “The data collection and evaluation techniques for the geotechnical investigations”. Türkiye’nin Afet Yönetim Sisteminin İyileştirilmesi Projesi Kapsamında Afet İşleri Genel Müdürlüğü Personeli Eğitim Kursu, Eylül 2001, Ankara, 183s. (in Turkish)

Tuncay, E., 2006. An Investigation on the Applicability of the Acoustic Emission Technique to Determine in-situ stresses. Seminer, Kumamoto University, Civil and Environmental Engineering, Kumamoto, Japan.

Tuncay, E., 2012. Kayaç Mekaniği Ders Notları. Hacettepe Üniversitesi, Jeoloji Mühendisliği Bölümü, 260s. http://yunus.hacettepe.edu.tr/~etuncay/Kaya_Mekanigi_Ders_Notu_Ergun_Tuncay.pdf.(in Turkish)

Ulusay, R., ve Tuncay, E., 2013. Jeoteknik Veri Toplama ve Değerlendirme Teknikleri Ders Notları. Hacettepe Üniversitesi, Jeoloji Mühendisliği Bölümü, 582s. http://yunus.hacettepe.edu.tr/~etuncay/Jeoteknik_Veri_Toplama_ve_Degerlendirme_Teknikleri.pdf (in Turkish)

Ulusay, R., ve Tuncay, E., 2016. Bilimsel Anlatım İlkeleri Ders Notları. Hacettepe Üniversitesi, Jeoloji Mühendisliği Bölümü, 362s. http://yunus.hacettepe.edu.tr/~etuncay/JEO492_Bilimsel_Anlatim_ Ilkeleri_Ders_Sunum_Notlari.pdf (in Turkish)

Tuncay, E., 2017. Length to Diameter Ratio (L/D) of Core Specimen: A Suggestion for L/D Classification to be Used for Unconfined Compression Test. Seminer, Northeastern University, Shenyang, China.