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Application of decision tree to selection of MTBM for adverse geological conditions

International Journal of Mining Science and Technology 2013年第4期23卷 499-507页

作者： jafarimoghaddam alireza Khademi Hamidi Jafar Najaf Mohammad Member of Young Researchers Club Islamic Azad University Mining Engineering Department Faculty of Engineering Tarbiat Modares University Department of Civil Engineering University of Texas at Arlington

So many potential risks can be identifed for application of trenchless technology especially using microtunneling *** changes in ground conditions,such as encountering boulders,tree roots,ground water and man-made structures such as old foundations are the principal geotechnical risks,which affect the selection of an appropriate microtunnel boring *** the other hand,the performance of each microtunneling technique will differ while encountering such ***,predicting the potential hazards provides a better safety and risk management *** this study,a couple of potentially hazardous situation,which are commonly associated with ground conditions,were identifed and investigated.A decision tree aid methodology was proposed based on geotechnical risk assessment for selection of proper microtunneling *** on the approach the most appropriate microtunneling technique has the minimum risk level either before or after hazards mitigation *** order to check the effciency of the approach in practice,selection of microtunnel boring machine for Hamadan sewerage pipeline project was ***,an earth pressure balance(EPB)MTBM was selected for the project.

关键词： Trenchless technology Microtunnel boring machine(MTBM) Diffcult ground conditions Geotechnical risk Decision tree

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