新疆阿尔塔什河床深厚覆盖层的钻探研究

河床深厚覆盖层的钻探工作始终是困扰阿尔塔什水利枢纽工程的主要问题之一,在其可行性研究阶段,根据已有地层的复杂特性,采用双管单动半合管、植物胶跟管钻进、及时调整护壁浆液的特性等方法,深厚覆盖层的钻探工作取得了长足的进展,使得问题得到较好地解决,本文对其进行了详细的分析和研究,供同行参考。

Research on Drilling for Deep Overburden Layer of Aertashi River in Xinjiang

The drilling for deep overburden layer of the riverbed is one of the major engineering questions in Aertashi Hydro Project.In the feasibility study stage,the drilling is made by using such methods as single acting and half enclosing with two tubes,drilling with vegetable gelatin following the tube,timely adjusting the slurry of the sidewall and so on based on the complexity of the strata,and the great progress has been achieved in the drilling for deep overburden layer,then,the engineering question in drilling has been better solved.The analysis and study about it are made here in detail,providing references for similar projects.