旋挖钻机钻进入岩判定与地层识别方法  

Formation identification method based on embedding judgment of rotary drilling rig

作　　者：许明[1,2] 刘先珊[1,2] 周泽宏 张林[4] 牛万保 张同乐 XU Ming;LIU Xianshan;ZHOU Zehong;ZHANG Lin;NIU Wanbao;ZHANG Tongle(Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education,Chongqing University, Chongqing 400045, China;School of Civil Engineering, Chongqing University, Chongqing 400045, China;State Grid Chongqing Transmission and Transformation Co. Ltd, Chongqing 400039, China;State Grid Chongqing Electric Power Company, Chongqing 400015, China)

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]重庆大学土木工程学院,重庆400045 [3]国家电网重庆市送变电公司,重庆400039 [4]国家电网重庆市电力公司,重庆400015

出　　处：《中南大学学报（自然科学版）》2017年第12期3344-3349,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51478065);中央高校基本科研业务费项目(106112014CDJZR200015;106112014CDJZR200014)~~

摘　　要：为了提高旋挖钻机施工效率和持力层辨识准确度,采用旋挖钻机钻进过程实时监测系统,对钻进过程中的直测参数和派生参数进行采样和分析,根据钻机工作参数和地层岩土体物理力学参数的固有特性、统计特性,建立钻进过程地层识别系统模型,把地质条件和钻机的工况参数联系起来。研究结果表明:地层结构的变化必然使钻进参数发生变化,进而使旋挖钻机显示出与不同埋置深度地层相适应的动态特征,利用岩土层承载能力评价的特征值——地层比功可概括地反映各类地层的质量好坏,通过与一桩一孔勘察结果进行对比,证明基于随钻参数的持力层判定方法有效。In order to improve the efficiency of the construction and increase the identification accuracy of bearing layer,the direct measurement parameters and the derivation parameters of rotary drilling rig were recorded and analyzed using real time monitoring system for drilling process.The drilling parameters and the physical and mechanical stratum parameters reveal inherent characteristics and statistical properties.The formation identification system relating geological conditions with the parameters of drilling was proposed.The results show that the drilling parameters definitely change with the variation of stratigraphic structure.The rotary rig shows different dynamic characteristics according to different embedded depths.All kinds of strata can be reflected in general based on specific energy to evaluate the bearing capacity.Compared with the survey results,the formation identification method based on drilling parameters of rotary drilling rig has been proved to be effective.

关 键 词：旋挖钻机 工况参数 持力层 地层比功 

分 类 号：U451.5[建筑科学—桥梁与隧道工程]