The Experts below are selected from a list of 64689 Experts worldwide ranked by ideXlab platform
Quansheng Liu - One of the best experts on this subject based on the ideXlab platform.
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Full-Scale Rotary Cutting Test to Study the Influence of Disc Cutter Installment Radius on Rock Cutting Forces
Rock Mechanics and Rock Engineering, 2018Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Xiaoxuan Kong, Jianping Liu, Xiaobo ZhangAbstract:Disc Cutters mounted on the cutterhead of tunnel boring machine (TBM) can be divided into center cutter, face cutter and gauge cutter according to their installment radius. Due to the differences in rock cutting condition, disc cutter turning radius and cutterhead stiffness distribution, they show very different characteristics in the magnitude of disc cutter normal and rolling forces. For the realistic modeling of whole cutterhead, full-scale rotary cutting test using disc cutter with different installment radius is a useful and inspiring way to study the influence of disc cutter installment radius on rock cutting forces. By conducting full-scale rotary cutting test, two main conclusions are obtained. First, disc cutter normal and rolling forces both decrease rapidly and then remain nearly stable when disc cutter installment radius increases. Second, the normal and rolling forces of the innermost disc Cutters are two to four times higher than those of the outermost disc Cutters. This study verifies the very uneven distribution of the disc cutter cutting forces on the cutterhead, and it can contribute to better arrangement of the disc Cutters to ensure that they subject to similar loading and wear conditions and also can offer suggestions for field TBM operation to avoid severe overloading of the inner disc Cutters.
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a wear rule and cutter life prediction model of a 20 in tbm cutter for granite a case study of a water conveyance tunnel in china
Rock Mechanics and Rock Engineering, 2017Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Jianping Liu, Xiaoping Zhang, Qiuming GongAbstract:Disc cutter wear is one of the comprehensive results of the rock–machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc Cutters. However, use of large-diameter disc Cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40–100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
Yucong Pan - One of the best experts on this subject based on the ideXlab platform.
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Full-Scale Rotary Cutting Test to Study the Influence of Disc Cutter Installment Radius on Rock Cutting Forces
Rock Mechanics and Rock Engineering, 2018Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Xiaoxuan Kong, Jianping Liu, Xiaobo ZhangAbstract:Disc Cutters mounted on the cutterhead of tunnel boring machine (TBM) can be divided into center cutter, face cutter and gauge cutter according to their installment radius. Due to the differences in rock cutting condition, disc cutter turning radius and cutterhead stiffness distribution, they show very different characteristics in the magnitude of disc cutter normal and rolling forces. For the realistic modeling of whole cutterhead, full-scale rotary cutting test using disc cutter with different installment radius is a useful and inspiring way to study the influence of disc cutter installment radius on rock cutting forces. By conducting full-scale rotary cutting test, two main conclusions are obtained. First, disc cutter normal and rolling forces both decrease rapidly and then remain nearly stable when disc cutter installment radius increases. Second, the normal and rolling forces of the innermost disc Cutters are two to four times higher than those of the outermost disc Cutters. This study verifies the very uneven distribution of the disc cutter cutting forces on the cutterhead, and it can contribute to better arrangement of the disc Cutters to ensure that they subject to similar loading and wear conditions and also can offer suggestions for field TBM operation to avoid severe overloading of the inner disc Cutters.
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a wear rule and cutter life prediction model of a 20 in tbm cutter for granite a case study of a water conveyance tunnel in china
Rock Mechanics and Rock Engineering, 2017Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Jianping Liu, Xiaoping Zhang, Qiuming GongAbstract:Disc cutter wear is one of the comprehensive results of the rock–machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc Cutters. However, use of large-diameter disc Cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40–100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
Jianping Liu - One of the best experts on this subject based on the ideXlab platform.
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Full-Scale Rotary Cutting Test to Study the Influence of Disc Cutter Installment Radius on Rock Cutting Forces
Rock Mechanics and Rock Engineering, 2018Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Xiaoxuan Kong, Jianping Liu, Xiaobo ZhangAbstract:Disc Cutters mounted on the cutterhead of tunnel boring machine (TBM) can be divided into center cutter, face cutter and gauge cutter according to their installment radius. Due to the differences in rock cutting condition, disc cutter turning radius and cutterhead stiffness distribution, they show very different characteristics in the magnitude of disc cutter normal and rolling forces. For the realistic modeling of whole cutterhead, full-scale rotary cutting test using disc cutter with different installment radius is a useful and inspiring way to study the influence of disc cutter installment radius on rock cutting forces. By conducting full-scale rotary cutting test, two main conclusions are obtained. First, disc cutter normal and rolling forces both decrease rapidly and then remain nearly stable when disc cutter installment radius increases. Second, the normal and rolling forces of the innermost disc Cutters are two to four times higher than those of the outermost disc Cutters. This study verifies the very uneven distribution of the disc cutter cutting forces on the cutterhead, and it can contribute to better arrangement of the disc Cutters to ensure that they subject to similar loading and wear conditions and also can offer suggestions for field TBM operation to avoid severe overloading of the inner disc Cutters.
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a wear rule and cutter life prediction model of a 20 in tbm cutter for granite a case study of a water conveyance tunnel in china
Rock Mechanics and Rock Engineering, 2017Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Jianping Liu, Xiaoping Zhang, Qiuming GongAbstract:Disc cutter wear is one of the comprehensive results of the rock–machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc Cutters. However, use of large-diameter disc Cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40–100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
Xingxin Peng - One of the best experts on this subject based on the ideXlab platform.
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Full-Scale Rotary Cutting Test to Study the Influence of Disc Cutter Installment Radius on Rock Cutting Forces
Rock Mechanics and Rock Engineering, 2018Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Xiaoxuan Kong, Jianping Liu, Xiaobo ZhangAbstract:Disc Cutters mounted on the cutterhead of tunnel boring machine (TBM) can be divided into center cutter, face cutter and gauge cutter according to their installment radius. Due to the differences in rock cutting condition, disc cutter turning radius and cutterhead stiffness distribution, they show very different characteristics in the magnitude of disc cutter normal and rolling forces. For the realistic modeling of whole cutterhead, full-scale rotary cutting test using disc cutter with different installment radius is a useful and inspiring way to study the influence of disc cutter installment radius on rock cutting forces. By conducting full-scale rotary cutting test, two main conclusions are obtained. First, disc cutter normal and rolling forces both decrease rapidly and then remain nearly stable when disc cutter installment radius increases. Second, the normal and rolling forces of the innermost disc Cutters are two to four times higher than those of the outermost disc Cutters. This study verifies the very uneven distribution of the disc cutter cutting forces on the cutterhead, and it can contribute to better arrangement of the disc Cutters to ensure that they subject to similar loading and wear conditions and also can offer suggestions for field TBM operation to avoid severe overloading of the inner disc Cutters.
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a wear rule and cutter life prediction model of a 20 in tbm cutter for granite a case study of a water conveyance tunnel in china
Rock Mechanics and Rock Engineering, 2017Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Jianping Liu, Xiaoping Zhang, Qiuming GongAbstract:Disc cutter wear is one of the comprehensive results of the rock–machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc Cutters. However, use of large-diameter disc Cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40–100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
Qiuming Gong - One of the best experts on this subject based on the ideXlab platform.
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a wear rule and cutter life prediction model of a 20 in tbm cutter for granite a case study of a water conveyance tunnel in china
Rock Mechanics and Rock Engineering, 2017Co-Authors: Yucong Pan, Quansheng Liu, Xingxin Peng, Jianping Liu, Xiaoping Zhang, Qiuming GongAbstract:Disc cutter wear is one of the comprehensive results of the rock–machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc Cutters. However, use of large-diameter disc Cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40–100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
