通过对在钢筋混疑土、花岗岩等建筑物上钻孔特点的分析，本文设计了一种新型的取芯式薄壁金钢石钻头。
A new type of thin-wall diamond core drill bit is developed through the analysis of drilling feature on the r.
经无损检测和钻孔取芯检测，碾压沥青混凝土心墙的容重、孔隙率和渗透系数均满足设计要求。
Nondestructive detection and core sample detection show that the unit weight, porosity and permeability of the core are in accord with the design requirement.
主要探讨低应变动力检测法、钻孔连续取芯法在深层搅拌水泥桩检测中的应用。
In this paper, the application of low stress dynamic detecting and drillings to get continuous cores in the testing of deeply stirring cement piles is discussed.
应用推荐