摘要
为研究压头压入时声发射图像与岩石破碎过程的关系，采用6种脆性和塑性岩石进行了试验。试验得到的声信号频率和平均幅度的图像表明：较硬的脆性岩石的压入破碎过程可分为微裂纹和微孔隙闭合、弹性变形，以及破碎后等五个阶段；而对于较软的塑性岩石则难以划分破碎阶段。另外还发现岩石压入硬度与声发射的峰值平均幅度有良好的相关关系。这种关系可能用来预测岩石可钻性。
: In order to study the relations between sonic emission image and rock fragmentation
during indentation head pressing in rock, six kinds of brittle or plastic rocks have been tested. The
sonic signal frequency and the average range image from the tests indicate that indentation of hard
brittle rocks can be divided into five stages, including micro crack and pore close, elastic deforma-
tion, post fragment, etc. Meanwhile, for the soft plastic rocks it is difficult to make a division in
such kind. In addition, a favorable interrelation was found between the hardness of rock's indenta-
tion and average peak value of sonic emission, which can be used for classification of rock
driliability.
出处
《探矿工程》
1992年第2期3-6,共4页
Exploration Engineering(Drilling & Tunneling)
