岩土工程学报Issue(9)：1705-1713,9.DOI:10.11779/CJGE201409018
滚刀线性侵入试验中岩石破裂模式研究
Linear cutting experiments on crack modes of rock under indentation of a single disc cutter
摘要
Abstract
In order to study the crack modes of Beishan granite under the indentation of a single disc rolling cutter, a series of linear cutting experiments are conducted on the Mechanical Rock Fragmentation Experimental Platform developed by Beijing University of Technology. During the experiment, a constant cross-section disc cutter with a diameter of 17 inches (432 mm) is used and a block of Beishan granite with the size of 1000×1000×600 mm is adopted. After the tests, it is found that there is a cracked part beneath the groove with varied fragmentation degree. Based on the observed crack mode and crack density, the rock sample is classified into re-compacted zone, crushed and cracked zone and intact rock zone, then the sizes and areas of these zones are summarized accordingly. Meanwhile the ultrasonic velocity tests and rebound tests are conducted to obtain the properties of different zones. Finally, it is found that these test results agree well with the fragmentation degrees of different zones. In addition, as the time of cutting increases, the areas of these zones expand significantly, while the properties of the corresponding zones almost keep constant.关键词
盘形滚刀/线性侵入试验/破裂分区/分区特性/北山花岗岩Key words
disc cutter/linear cutting experiment/zoning of cracked area/property of cracked zone/Beishan granite分类
建筑与水利引用本文复制引用
姚羲和,赵晓豹,龚秋明,马洪素,李晓昭,唐伟,卢广亮,何冠文..滚刀线性侵入试验中岩石破裂模式研究[J].岩土工程学报,2014,(9):1705-1713,9.基金项目
国防科技重点项目（科工二司[2012]491号）；国防科技重点项目 （）
