论文部分内容阅读
引言美国矿业局长期以来致力于改进地压控制方法的研究。到目前为止,此种研究主要是针对金属矿的,目的在于从根本上改变采矿方法以解决地压控制问题。这是一举两得的事,既能改善安全条件,又可提高生产率。由于煤矿安全问题的日益重要与紧迫,根据1969年联邦煤矿卫生与安全条例,矿业局对于地压控制的研究有了很大的发展。以
Introduction The United States Department of Mines has long been committed to improving the study of ground pressure control methods. So far, such studies have been geared toward metallogenes with the aim of fundamentally changing mining methods to address the problem of ground pressure control. This is a double benefit. It can both improve safety conditions and increase productivity. Due to the increasing importance and urgency of coal mine safety issues, according to the regulations of the Federal Coal Mine Health and Safety in 1969, the Bureau of Mines has greatly developed the research on underground pressure control. To