Predictive Models for Roadheaders' Cutting Performance in Coal Measure Rocks

Roadheaders offer a unique capability and flexibility for the excavation of soft to medium strength rock formations, hence; are extensively used in underground mining and tunneling operations. A critical issue in successful roadheader application is the ability to evaluate and predict the machine performance. The main objective of this research study is to investigate the cutting performance of roadheaders in coal measure rocks by paying special attention to the influence of discontinuity orientation (alpha angle) and the specific energy. With this respect, a database was established from detailed field data including the measured instantaneous cutting rates (ICR) and geomechanical parameters of the coal measure rocks for each cutting condition in the tunnels. The database was then analyzed by utilizing the statistical method in order to yield new predictive models. The influence of alpha angle (the angle between tunnel axis and the planes of weakness) on roadheader performance was investigated and the correlation between them was found to be good (R²=0.96). The analysis of the specific energy also showed that there is a relatively good relation (R²=0.91) between this parameter and ICR. Finally, the new predictive models for ICR (with respect to alpha angle and specific energy) showed to have highly correlated relationships within the limits of measured values and hence may successfully be used to evaluate the performance of medium-duty roadheaders in coal measure rocks.

[1]  Ömer Feyzi Gürer,et al.  Origin of the Upper Cretaceous–Tertiary sedimentary basins within the Tauride–Anatolide platform in Turkey , 2002, Geological Magazine.

[2]  Robert B. Kidd,et al.  Heterogeneity and lithotype distribution in ancient deep-sea canyons: Point Lobos deep-sea canyon as a reservoir analogue , 1998 .

[3]  Clifford Alfred Pequignot.  Tunnels and tunnelling , 1963 .

[4]  Arthur B. Cummins,et al.  SME mining engineering handbook , 1973 .

[5]  Christian J. Strohmenger,et al.  Early diagenesis in Pleistocene coral reefs, southern Sinai, Egypt: response to tectonics, sea‐level and climate , 1997 .

[6]  Jamal Rostami,et al.  Performance prediction: a key issue in mechanical hard rock mining , 1995 .

[7]  James Derek Fairhead,et al.  Chronology and geodynamic setting of Cretaceous-Cenozoic rifting in West and Central Africa , 1992 .

[8]  J. Golonka.  Plate tectonic evolution of the southern margin of Eurasia in the Mesozoic and Cenozoic , 2004 .

[9]  Jonathan P. Turner,et al.  Sedimentary basin inversion and intra-plate shortening , 2004 .

[10]  Arnold H. Bouma,et al.  Sedimentology of some Flysch deposits : a graphic approach to facies interpretation , 1962 .

[11]  Philip H. Heckel,et al.  Recognition of Ancient Shallow Marine Environments , 1972 .

[12]  李幼升,et al.  Ph , 1989 .

[13]  A. Angelucci,et al.  FOLDING OF THE MESOZOIC COVER IN SW SOMALIA: A COMPRESSIONAL EPISODE RELATED TO THE EARLY STAGES OF INDIAN OCEAN EVOLUTION , 1988 .

[14]  Jean Lajoie,et al.  Sand and Sandstone , 1974 .

[15]  D. Graf,et al.  Sedimentary geology. , 1979, Science.

[16]  John F. Casey,et al.  A structural record of the emplacement of the Pozanti-Karsanti ophiolite onto the Menderes-Taurus block in the late Cretaceous, eastern Taurides, Turkey , 1995 .

[17]  F. Fournier,et al.  Paleoenvironments and high-frequency cyclicity from Cenozoic South-East Asian shallow-water carbonates: a case study from the Oligo-Miocene buildups of Malampaya (Offshore Palawan, Philippines) , 2004 .

[18]  Aral I. Okay,et al.  Obduction, subduction and collision as reflected in the Upper Cretaceous–Lower Eocene sedimentary record of western Turkey , 2001, Geological Magazine.

[19]  H. Copur,et al.  Some geological and geotechnical factors affecting the performance of a roadheader in an inclined tunnel , 2004 .

[20]  R. J. Dunham.  Classification of Carbonate Rocks According to Depositional Textures , 1962 .

[21]  O. Z. Hekimoglu,et al.  From research into practice: In-situ studies for design of boom tunnelling machine cutting heads , 1990 .

[22]  Michael A. Hamilton,et al.  Timing of high-grade metamorphism in central Turkey and the assembly of Anatolia , 2004, Journal of the Geological Society.

[23]  M. Gül,et al.  Effects of antecedent topography on reefal carbonate deposition: Early-Middle Miocene of the Adana Basin, S Turkey , 2007 .

[24]  OkanTuysuz Erdinc Yigitbas S. Can Genc Yucel Yilmaz,et al.  AAPG Memoir 68: Regional and Petroleum Geology of the Black Sea and Surrounding Region. Chapter 11: Geology and Tectonic Evolution of the Pontides , 1997 .

[25]  P. Turner,et al.  Tertiary evolution of the Sivas Basin, central Turkey , 1991 .

[26]  P. A. Ziegler,et al.  Late Cretaceous and Cenozoic intra-plate compressional deformations in the Alpine foreland—a geodynamic model , 1987 .

[27]  Murat Gül,et al.  The sedimentary characteristics of Dagpazari patch reef (Middle Miocene, mut-içel/Turkey) , 2003, Carbonates and Evaporites.

[28]  A. Şengör,et al.  Palaeotectonic evolution of the Tuzgölü basin complex, Central Turkey: sedimentary record of a Neo-Tethyan closure , 1984, Geological Society, London, Special Publications.

[29]  N. Görür,et al.  Cretaceous to Miocene Palaeogeographic Evolution of Turkey: Implications for Hydrocarbon Potential , 2001 .

[30]  O. Z. Hekimoglu,et al.  Effect of angle of wrap on cutting performance of drum shearers and continuous miners , 2004 .

[31]  Alastair H. F. Robertson,et al.  Introduction: aspects of the geological evolution of the Eastern Mediterranean , 1984, Geological Society, London, Special Publications.

[32]  A. Koçyi̇ği̇t,et al.  A new intracontinental transcurrent structure: the Central Anatolian Fault Zone, Turkey , 1998 .

[33]  H. Copur,et al.  Roadheader applications in mining and tunneling industries , 2000 .

[34]  I Mcfeat-Smith,et al.  ROCK PROPERTY TESTING FOR THE ASSESSMENT OF TUNNELLING MACHINE PERFORMANCE , 1977 .

[35]  Haluk Temiz,et al.  Tectonics of the Sivas Basin: The Neogene Record of the Anatolian Accretion Along the Inner Tauric Suture , 1996 .

[36]  P. A. Ziegler,et al.  Compressional intra-plate deformations in the Alpine foreland—an introduction , 1987 .

[37]  O. Z. Hekimoglu,et al.  Laboratory and in situ investigations of tracking cutters for computer-aided design of shearer drums , 2003 .

[38]  A. Şengör,et al.  TECTONIC EVOLUTION OF THE CENTRAL ANATOLIAN BASINS , 1998 .

[39]  Nuh Bilgin,et al.  ROADHEADERS GLEAN VALUABLE TIPS FOR ISTANBUL METRO , 1990 .

[40]  William Bosworth,et al.  Senonian basin inversion and rejuvenation of rifting in Africa and Arabia: synthesis and implications to plate-scale tectonics , 1997 .

[41]  Saffet Yagiz,et al.  Utilizing rock mass properties for predicting TBM performance in hard rock condition , 2008 .

[42]  I. Smith,et al.  Correlation of rock properties and the cutting performance of tunnelling machines , 1977 .

[43]  G. Shanmugam,et al.  Ten turbidite myths , 2002 .

[44]  John F. Casey,et al.  Geochemical characteristics of accreted material beneath the Pozanti-Karsanti ophiolite, Turkey: Intra-oceanic detachment, assembly and obduction , 1996 .

[45]  O. Z. Hekimoǧlu.  THE RADIAL LINE CONCEPT FOR CUTTING HEAD PICK LACING ARRANGEMENTS , 1995 .

[46]  Maurice E. Tucker,et al.  Principles of sedimentology and stratigraphy , 1995 .

[47]  Yücel Yılmaz,et al.  Tethyan evolution of Turkey: A plate tectonic approach , 1981 .

[48]  Nuh Bilgin,et al.  A Model to Predict the Performance of Roadheaders And Impact Hammers In Tunnel Drivages , 1996 .

[49]  Kourosh Shahriar,et al.  A model to predict the performance of roadheaders based on the Rock Mass Brittleness Index , 2011 .

[50]  M. Cemal,et al.  GEOCHRONOLOGICAL DATA FROM THE SOUTHERN PART (NİĞDE AREA) OF THE CENTRAL ANATOLIAN MASSIF , 1986 .

[51]  Matthew Clark,et al.  The role of the Early Tertiary Ulukisla Basin, southern Turkey, in suturing of the Mesozoic Tethys ocean , 2002, Journal of the Geological Society.

[52]  William Bosworth,et al.  Mesozoic and early Tertiary rift tectonics in East Africa , 1992 .

[53]  J. D. van Wees,et al.  Dynamics of intra-plate compressional deformation: the Alpine foreland and other examples , 1995 .

[54]  Matthew Clark,et al.  Uppermost Cretaceous-Lower Tertiary Ulukisla Basin, south-central Turkey: sedimentary evolution of part of a unified basin complex within an evolving Neotethyan suture zone , 2005 .