【摘要】 采用冲击载荷下的弹性波理论对冻土可钻性进行了理论分析 ,并分析了影响冻土可钻性的主要因素 ,即温度、波速、冲击韧性和凿碎比功 ,进行了冻结粘土在 7个不同温度下的可钻性试验 ,结果表明利用凿碎比功来确定冻土的可钻性 ,数据稳定 ,和钻眼相关性好 ,能较好的反映冻土可钻性。试验得出的结论对现场施工具有一定的参考价值更多还原

【Abstract】 In this paper the drillability of frozen clay is analyzed by using the elastic wave theory under an impact load. The main factors affecting the drillability of frozen soil are determined, namely temperature, wave velocity, impact inductility and chiseling specific work. The drillability tests of frozen clay are carried out under the seven different temperatures. The results show that it is appropriate to define drillability using the chiseling specific work factor because it has a good relationship with drill hole and can reflect the drillability of frozen clay quite well. The test results provide a good guideline for drilling in frozen soil.更多还原