CN109930994B - 连续取芯反循环钻头、连续取芯装置及连续取芯方法 - Google Patents
连续取芯反循环钻头、连续取芯装置及连续取芯方法 Download PDFInfo
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CN111335836B (zh) * | 2020-03-04 | 2022-02-15 | 生态环境部华南环境科学研究所 | 一种提高取样完整性的地质钻探取芯器及其取样方法 |
CN111577187A (zh) * | 2020-05-09 | 2020-08-25 | 田欣浩 | 一种用于松散破碎地层的水平定向无粘结性土取样钻具 |
CN117030337B (zh) * | 2023-10-08 | 2023-12-26 | 中佳勘察设计有限公司 | 一种带切断功能的取土器 |
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