煤田地质与勘探2017，Vol.45Issue(4)：163-169,7.DOI:10.3969/j.issn.1001-1986.2017.04.029
浅孔复杂地层Φ110型绳索取心钻具的研制与应用
Research and application of wire-line coring drilling tools for shallow hole in heterogeneous layers
摘要
Abstract
For existing single core barrel drilling tools is simple in structure,there are many problems when it comes to shallow hole with heterogeneous layers,such as low coring rate,collapse of hole wall without protecting,confusing soil sample,bad water resisting and ineffective coring protection,we develop a kind of wire-line coring drilling tools for shallow hole in heterogeneous layers.It consists of outer tube assembly,inner tube assembly and fisher.The paper described its structure characteristics and working principle in detail.The theoretical formula for falling velocity of inner tube was deduced,ABAQUS was adopted to analyze the damage mechanism and breaking reason for damageable parts-hanging ring and seat ring in wire-line coring drilling tools.Adding weighting mechanism to the fisher,the theoretical formula for weighting mass was deduced.Field test shows that this Φ110 wire-line coring drilling tools can accomplish shallow hole drilling work,protect the hole wall effectively and improve the core recovery.关键词
浅孔钻探/取样钻具/绳索取心/打捞器加重/悬挂机构Key words
shallow exploratory boring/coring drilling tools/wire-line coring/weighting on fisher/suspension mechanism分类
天文与地球科学引用本文复制引用
周云,张绍和..浅孔复杂地层Φ110型绳索取心钻具的研制与应用[J].煤田地质与勘探,2017,45(4):163-169,7.基金项目
中南大学中央高校基本科研业务费专项基金项目(2016zzts439)The Fundamental Research Funds for the Central Universities of Central South University(2016zzts439) （2016zzts439）
