D0I:10.13374/1.issm100I103.2008.04.036 第30卷第4期 北京科技大学学报 Vol.30 No.4 2008年4月 Journal of University of Science and Technology Beijing Apr.2008 金刚石钻进能量与花岗岩地层风化程度的关系 谭卓英)岳中琦) 谭国焕)李焯芬) 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，北京1000832)北京科技大学土木与环境工程学院，北京100083 3)香港大学土木工程系，中国香港 摘要基于钻进过程监测系统在充填土一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、动能以及钴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 分类号TU413.3 Relationship between diamond penetrating energy and weathered degree in granite formation TAN Zhuoying').YUEZ.Q.3).THA M L.G.3.LEE C.F.3 1)Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines.University of Science and Technology Beijing.Beijing 100083.China 2)School of Civil and Environmental Engineering.University of Science and Technology Beijing Beijing 100083.China 3)Department of Civil Engineering.University of Hong Kong.Pokfulam Road.Hong Kong.China 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 pene- trating energy in fill-weathered granite formation agrees with that in common weathered granite formation.A negative correlation be- tween the viscous energy,kinetic energy,total penetrating energy and the weathered degree of granite existed.and a positive correla- tion 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. KEY WORDS weathered granite:rotary drilling:specific energy of penetrating:fill soil:rock drillability:real-time classification 通过仪器钻进系统，可以获得钻机工作参数进而获得有关地层丰富的地质信息，研究表明，钻进 参数如有效轴压力、钻具转速及钻孔速率与岩石地 收稿日期：2007-03-04修回日期：2007-05-10 层强度及风化程度之间存在很好的响应关系]. 基金项目：国家自然科学基金重大资助项目(N。.50490271);香港特 在采用浇注混凝土试块对煤层顶、底板地层特性进 别行政区政府研究资助基金项目(No-HKU7005/01E):香港赛马会 行的模拟实验亦表明，基于钻进物理参数对模拟地 慈善资助基金项目 作者简介：源卓英(1965一)男，教授，博士， 层进行识别与分类，其误差低于5%1，然而，由于 E-mail:markzhy-tan@163.com 地质环境的复杂性以及钻进作业的随机性，钴进参金刚石钻进能量与花岗岩地层风化程度的关系 谭卓英1‚2） 岳中琦3） 谭国焕3） 李焯芬3） 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 2） 北京科技大学土木与环境工程学院‚北京100083 3） 香港大学土木工程系‚中国香港 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 分类号 TU413∙3 Relationship between diamond penetrating energy and weathered degree in granite formation T A N Zhuoying 1‚2）‚Y UE Z．Q．3）‚T HA M L．G．3）‚LEE C．F．3） 1） Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines‚University of Science and Technology Beijing‚Beijing100083‚China 2） School of Civil and Environmental Engineering‚University of Science and Technology Beijing‚Beijing100083‚China 3） Department of Civil Engineering‚University of Hong Kong‚Pokfulam Road‚Hong Kong‚China ABSTRACT Based on experimental data from a drilling process monitoring system instrumented with a hydraulic rotary drill rig in fil-l weathered granite formation‚the diamond penetrating energy was analyzed．T he result shows that the distribution of the pene￾trating energy in fil-l weathered granite formation agrees with that in common weathered granite formation．A negative correlation be￾tween the viscous energy‚kinetic energy‚total penetrating energy and the weathered degree of granite existed‚and a positive correla￾tion 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．T he 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． KEY WORDS weathered granite；rotary drilling；specific energy of penetrating；fill soil；rock drillability；rea-l time classification 收稿日期：2007-03-04 修回日期：2007-05-10 基金项目：国家自然科学基金重大资助项目（No．50490271）；香港特 别行政区政府研究资助基金项目（No．HKU7005／01E）；香港赛马会 慈善资助基金项目 作者简介：谭卓英（1965－）‚男‚教授‚博士‚ E-mail：markzhy－tan＠163．com 通过仪器钻进系统‚可以获得钻机工作参数进 而获得有关地层丰富的地质信息．研究表明‚钻进 参数如有效轴压力、钻具转速及钻孔速率与岩石地 层强度及风化程度之间存在很好的响应关系［1－6］． 在采用浇注混凝土试块对煤层顶、底板地层特性进 行的模拟实验亦表明‚基于钻进物理参数对模拟地 层进行识别与分类‚其误差低于5％［7］．然而‚由于 地质环境的复杂性以及钻进作业的随机性‚钻进参 第30卷 第4期 2008年 4月 北 京 科 技 大 学 学 报 Journal of University of Science and Technology Beijing Vol．30No．4 Apr．2008 DOI:10．13374／j．issn1001－053x．2008．04．036