Experimental study on the machining performance of the brazed diamond drill bits

钎焊金刚石取孔钻加工实验研究

There are not detailed specifications and regulations about verifying and evaluating core sample in base bore-hole sampling,so it is necessary to discuss the applicability,verification index and quality evaluation about bore-hole core sample verification.

有关路面基层钻孔取样后芯样的检验和评定方法,在现行规范中没有具体的说明和规定,故有必要对钻孔芯样检验方法的适用性、检验指标及质量评定进行探讨,以供同行参考。

The application of core-drilling methodin quality inspection of pile;

如何用钻孔取芯法检测桩身质量

Through bearing plate test,core-drilling method,grout amount analysis and other methods grouting effect is evaluated.

对高填方桥台台背注浆加固的具体措施及施工技术进行了介绍,并通过承压板试验、钻孔取芯法以及注浆量分析法几种方法对注浆效果进行了评价,阐述了其质量保证措施及安全保证措施,对于改善桥头跳车及竣工后沉降量具有重要意义。