三层管压卡取样钻具在岱海取样工程中的应用

Application of Press-fitting Sampling Drilling Tool of Three Layer Pipes in Daihai Lake

摘要:

当前环境问题受到人们越来越多的重视，而必不可缺的取样工程则成为环境科学研究领域中的关键。要想获得理想的环境取样效果，必须克服松散地层存在的堵心、丢心、样品被冲刷、孔壁坍塌等现象的发生。隔水式三层管压卡取样钻具主要是针对松散软地层取样而设计的。经岱海湖泊取样实践证明，取样器性能可靠，达到了预期目的，能够满足环境科学钻探100%取心率的要求。

Abstract:

The current environmental issue is gained more and more attention by people; indispensable sampling project becomes a key of study on environmental science. To get a good environmental sampling result, the phenomenon of the core blocking, core lost, samples being washed, the hole wall collapsing, and so on must be overcome. Press-fitting sampling drilling tool of three layer pipes of water insulation style is mainly designed for loose and soft formation sampling. It has been proved by practice in Daihai Lake that press-fitting sampling drilling tool of three layer pipes has a very reliable performance and can meet the requirements of coring rate of 100% in environmental science core drilling.