首页 | 本学科首页   官方微博 | 高级检索  
     检索      

金刚石钻进能量与花岗岩地层风化程度的关系
引用本文:谭卓英,岳中琦,谭国焕,李焯芬.金刚石钻进能量与花岗岩地层风化程度的关系[J].北京科技大学学报,2008,30(4):339-343.
作者姓名:谭卓英  岳中琦  谭国焕  李焯芬
作者单位:1. 北京科技大学金属矿山高效开采与安全教育部重点实验室,北京,100083;北京科技大学土木与环境工程学院,北京,100083
2. 香港大学土木工程系,中国香港
基金项目:国家自然科学基金 , 香港特别行政区政府研究资助基金 , 香港赛马会慈善资助基金
摘    要:基于钻进过程监测系统在充填土-风化花岗岩地层中对液压旋转钻进的监测数据,对金刚石钻进系统的能量进行了分析.结果表明,钻进系统的能量分布与在普通风化花岗岩地层中的结果一致,黏滞能、动能以及钻进总能量与岩石的风化程度呈负相关,轴力功与岩石的风化程度呈正相关,说明金刚石钻进能量与岩石风化程度具有很好的响应关系.动能、轴力功及黏滞能受钻进方式影响,用于地层识别将受严格的可比条件限制.金刚石钻进比功随岩石风化程度的增强而减少,在不同风化程度的岩层中具有很好的分区性.而且,在充填土及全风化、强风化花岗岩地层中,金刚石旋转钻进比功值明显低于冲击凿碎比功,在微风化的坚硬岩中,旋转钻进比功则明显高于冲击凿碎比功.

关 键 词:风化花岗岩  旋转钻进  钻进比功  充填土  岩石可钻性  实时分级
修稿时间:2007年3月4日

Relationship between diamond penetrating energy and weathered degree in granite formation
TAN Zhuoying,YUE Z.Q.,THAM L. G.,LEE C. F..Relationship between diamond penetrating energy and weathered degree in granite formation[J].Journal of University of Science and Technology Beijing,2008,30(4):339-343.
Authors:TAN Zhuoying  YUE ZQ  THAM L G  LEE C F
Institution:TAN Zhuoying,YUE Z.Q.3,THAM L. G.,LEE C. F.
Abstract:Based on experimental data from a drilling process monitoring system instrumented with a hydraulic rotary drill rig in fill-weathered granite formation,the diamond penetrating energy was analyzed.The result shows that the distribution of the penetrating energy in fill-weathered granite formation agrees with that in common weathered granite formation.A negative correlation between the viscous energy,kinetic energy,total penetrating energy and the weathered degree of granite existed,and a positive correlation between the thrust force energy and the weathered degree was presented,which indicates that there is a well response between the penetrating energy and the weathered degree of rock.However,the kinetic energy,thrust force energy and viscous energy are limited in identification of formation because of different effects in various drilling modes.The specific energy of diamond drilling(SEDD)increased with the weathered degree of rock and the values of SEDD can be classified into corresponding range according to the weathered degree of rock.It is shown that the SEDD in rotary drilling is apparently less than the specific energy of percussive drilling(SEPD)in both fill soil and very strongly weathered granite formation.Reversely,the SEDD is much more than the SEPD in lightly weathered hard rock.
Keywords:weathered granite  rotary drilling  specific energy of penetrating  fill soil  rock drillability  real-time classification
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号