探矿工程-岩土钻掘工程Issue(7)：38-41,4.
顶驱车载钻机空气潜孔锤钻进用低压防喷装置的研制
Development of Low Pressure Blowout Preventer for Air DTH Hammer Drilling Used on Top Drive Truck Driller
摘要
Abstract
In order to prevent working environment pollution, a blowout preventer is necessary to carry high-speed upward downhole dust or slurry away from the hole top during DTH hammer drilling.Comprehensively considering the main factors of the structure characteristics of hole top workbench for truck driller, the shape features of matched drill pipe with taper at the joint, the drilling process characteristics and the mount-dismount operating conditions, a low pressure blowout preventer for air DTH hammer drilling used on top drive truck driller was designed with the advantages of simple structure and con-venient installation.The borehole entrance sealing was conducted by interference fit between rubber sealing plug and drill-ing pipes, the sufficient compensation quantity of rubber sealing plug is effective for sealing of those pipes with large outside diameter difference;the rubber sealing plug can be easily replaced while adding drilling pipes;2 diversion ports were set up to reduce returned fluid pressure drop.It is showed by the field application that the blowout preventer can effectively prevent the dust or slurry leakage and obviously improve the construction environment.关键词
车载钻机/空气潜孔锤钻进/密封胶芯/低压防喷装置Key words
truck driller/air DTH hammer drilling/rubber sealing plug/low pressure blowout preventer分类
天文与地球科学引用本文复制引用
赵江鹏,王四一,张晶,刘祺..顶驱车载钻机空气潜孔锤钻进用低压防喷装置的研制[J].探矿工程-岩土钻掘工程,2015,(7):38-41,4.基金项目
国家科技重大专项资助项目“中硬煤层大功率定向钻进技术与装备”（编号2011 ZX05040－004－003）；第一批安全科技“四个一批”项目“煤矿快速救援关键技术与装备研发”；中煤科工集团西安研究院技术创新项目“煤矿区应急救援大直径钻孔成孔工艺技术研究” （）
