| 砂卵石层旋冲挤密钻进机具研究与应用 |
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| 引用本文： | 时元玲,孙友宏,王清岩,邓树密. 砂卵石层旋冲挤密钻进机具研究与应用[J]. 探矿工程(岩土钻掘工程), 2014, 41(4): 64-66,78 |
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| 作者姓名： | 时元玲 孙友宏 王清岩 邓树密 |
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| 作者单位： | 吉林大学建设工程学院,吉林大学建设工程学院,吉林大学建设工程学院,中国水利水电第十工程局 |
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| 基金项目： | 中国水利水电第十工程局技术开发课题,贵州省科技攻关课题 |
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| 摘 要： | 针对松散地层自稳能力差,因钻孔掉块、缩径等引起提钻遇卡的问题,设计了PDH-130型新型双向旋冲挤密钻具,利用浮动芯管改变活塞配气行程,实现正向冲击回转挤密钻进及提钻时的反冲击功能。根据现场试验情况,对双向冲击矛结构进行了改进,以满足砂土、砂卵石等复杂地层旋冲挤密钻进施工要求。
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| 关 键 词： | 旋冲挤密钻进 双向冲击矛 复杂地层 |
| 收稿时间： | 2014-01-15 |
| 修稿时间： | 2014-01-15 |
Research and Application of Rotary-percussion-extruding Drilling Equipment in Gravel with Sand Formation |
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| SHI Yuan-ling,SUN You-hong,WANG Qing-yan and DENG Shu-mi. Research and Application of Rotary-percussion-extruding Drilling Equipment in Gravel with Sand Formation[J]. Exploration Engineering （Rock & Soil Drilling and Tunneling）, 2014, 41(4): 64-66,78 |
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| Authors: | SHI Yuan-ling SUN You-hong WANG Qing-yan DENG Shu-mi |
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| Affiliation: | College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,Sinohydro Bureau 10 Co., Ltd. |
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| Abstract: | To deal with the poor self-stability of loose formation and drill tools sticking caused by block-falling and hole shrinkage, new PDH-130 bidirectional rotary-percussion-extruding mole is designed by using the floating core tube to change impact piston stroke and achieve the reverse impact function when normal rotary-percussion-extruding drilling and drill pipe lifting are conducted. On the basis of the field tests, improvement is made on the structure of PDH-130 bidirectional impact mole to meet the construction requirements of rotary-percussion-extruding drilling in sand, gravel and other complex formations. |
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| Keywords: | rotary-percussion-extruding drilling bidirectional impact mole complex formation |
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