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利用声发射方法测量地应力,是最近这几年才发展起来的一种新技术,虽然目前尚处于试验室的研究阶段,但已显示出许多优(?)。比起目前普遍采用的钻孔应力解除法,以及仍在发展中的水压致裂法(hydraulic fractuiing method),它只有成本低、省时间,操作简单方便等优点,而其准确性也符合工程技术问题的要求,因此正受到越来越大的重视。目前欧、美、日本各国,均有不少学者从事这方面的研究工作。本人在外进修期间,有机会参与了这一研究活动,现将声发射法的基本原理以及目前的发展状况,做一简单介绍。
The measurement of geostress using acoustic emission is a new technique developed in recent years. Although it is still in the research stage of the laboratory, it has shown many advantages (?). Compared with the commonly used drilling stress relief method and the still developing hydraulic fracturing method, it has the advantages of low cost, time saving, simple and convenient operation, and its accuracy is in line with engineering Technical requirements, it is receiving more and more attention. At present, many scholars in Europe, the United States and Japan are engaged in research in this field. During my study abroad, I had the opportunity to participate in this research activity. Now I will briefly introduce the basic principles of the AE method and its current development.