一种基于TBM掘进参数的现场岩石强度快速估算模型
发布时间：2019-07-04 06:17
【摘要】：基于隧道掘进机(tunnel boring machine,TBM)现场实际掘进参数与岩石强度的相关性,提出一种现场岩石强度快速估算模型。该模型详细分析了开敞式TBM现场实际掘进参数的趋势,建立了其与岩石单轴抗压强度(uniaxial compressive strength,UCS)的拟合关系式;根据回归系数R2排序:0.761 2(贯入度指数)0.759 5(推力)0.691 5(掘进比能)0.598 6(扭矩)0.561 5(贯入度),确定采用贯入度指数(field penetration index,FPI)快速估算岩石强度UCS。与以往岩石强度经验模型对比,该估算模型更具针对性和适用性。研究成果为TBM工程岩石强度的快速估算提供了一种新的切实可行的思路。
[Abstract]:Based on the correlation between the actual excavation parameters and rock strength of tunnel roadheader (tunnel boring machine,TBM), a rapid estimation model of rock strength in situ is proposed. The model analyzes in detail the trend of the actual driving parameters of the open TBM field, and establishes the fitting relationship between the model and the uniaxial compressive strength (uniaxial compressive strength,UCS of the rock. According to the order of regression coefficient R2: 0.761 2 (penetration index) 0.759 5 (thrust) 0.691 5 (heading specific energy) 0.598 6 (torque) 0.561 5 (penetration), it is determined that rock strength UCS. is estimated quickly by penetration index (field penetration index,FPI). Compared with the previous empirical model of rock strength, the estimation model is more targeted and applicable. The research results provide a new and feasible idea for the rapid estimation of rock strength in TBM project.
【作者单位】： 中国葛洲坝集团第三工程公司;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;
【分类号】：U455.31
，
本文编号：2509693
[Abstract]:Based on the correlation between the actual excavation parameters and rock strength of tunnel roadheader (tunnel boring machine,TBM), a rapid estimation model of rock strength in situ is proposed. The model analyzes in detail the trend of the actual driving parameters of the open TBM field, and establishes the fitting relationship between the model and the uniaxial compressive strength (uniaxial compressive strength,UCS of the rock. According to the order of regression coefficient R2: 0.761 2 (penetration index) 0.759 5 (thrust) 0.691 5 (heading specific energy) 0.598 6 (torque) 0.561 5 (penetration), it is determined that rock strength UCS. is estimated quickly by penetration index (field penetration index,FPI). Compared with the previous empirical model of rock strength, the estimation model is more targeted and applicable. The research results provide a new and feasible idea for the rapid estimation of rock strength in TBM project.
【作者单位】： 中国葛洲坝集团第三工程公司;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;
【分类号】：U455.31
，
本文编号：2509693
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