全长胶结锚索用于采矿工业已有20多年,现在是支护大型地下巷道的主要手段之一。以前都是通过实验室试验来评价各种人工控制因素,如水泥砂浆质量、钢绳去锈和去油脂、安装排气管和注浆管等对锚索最终粘结能力的影响。然而,实验室结果和锚索较短埋长的现场试验结果之间的吻合性差,妨碍了实验室结果作为实际设计工具应用。两者之间的差异,可以提出以下两种解释:(1)拔出锚索的程序不同,尤其是锚索的自由端在试验过程中回转;(2)实验室和现 Full-length cemented cables have been used in the mining industry for more than two decades and are now one of the major means of supporting large underground tunnels. In the past, various laboratory controls were used to evaluate various factors such as the quality of cement mortar, the rust removal and degreasing of steel ropes, the installation of exhaust pipes and grouting pipes, etc. on the ultimate bonding ability of the cables. However, the poor agreement between the laboratory results and the field test results for the shorter anchor lengths prevented laboratory results from being used as a practical design tool. The difference between the two can be put forward in the following two explanations: (1) The procedure for pulling out the anchor cable is different, especially the free end of the anchor cable is rotated during the test; (2) The laboratory and the present