铀矿地质2024，Vol.40Issue(1)：181-188,8.DOI:10.3969/j.issn.1000-0658.2024.40.015
地浸砂岩型铀矿松散岩层单动双管取心钻具的研制与试验
Research and Test of Swivel Type Double Tube Core Barrel in the Loose Bed of In-situ Leachable Sandstone-type Uranium
摘要
Abstract
In order to solve the problems of poor quality,low efficiency and difficult in core sampling by single-tube core barrels in the loose bed such as deep target/ore host layer,a swivel type double tube core barrels with hydraulically-driven core-out structure and quick release connector were studied and tested by designing and improving the swivel structure,hydraulically-driven core-out structure and quick release connectors.Two types of SD110 swivel type double tube core barrels with hydraulically-driven core-out and quick release functions were developed and tested.The results show that the SD110 swivel type double tube core barrels can hydraulically drive core out of barrel rapidlly on the surface without removing the inner tube and improve the core-outing efficiency of the double-tube drilling tools;the SDKC110 type drilling tools can quickly disassemble and replace the inner tube to achieve parallel core-outing and drilling operations.Compared with the single-tube core barrels,the average round trip meterage of SD series double-tube drilling tools increased by 28.62%and the average rate of penetration increased by 11.61%;While to the conventional swivel type double tube core barrels,the core-outing operation time of SD series reduced by 32.69%.Thefore SD series swivel type double tube core barrels are suitable for core drilling applications in loose rock,which can effectively improve core drilling efficiency and quality.关键词
单动双管钻具/液力退心/快速拆卸/设计与试验Key words
swivel type double tube core barrel/core-outing operation/quick-release/research and test分类
天文与地球科学引用本文复制引用
李博,刘晓阳,王琳,邓氚军,杨爱军..地浸砂岩型铀矿松散岩层单动双管取心钻具的研制与试验[J].铀矿地质,2024,40(1):181-188,8.基金项目
中国核工业集团"第四代铀矿勘查关键技术研究与示范"项目(编号:2021-143)资助. （编号:2021-143）
