喷射混凝土支护技术已在国内外井巷工程中获得广泛的应用。国外对于湿式喷射的研究已有三十多年历史,国内已搞了十多年。到目前为止,国内外已研制成功二、三十种喷射机。本文从其中挑出六、七种有代表性的湿喷机,对它们的基本结构、工作原理及其发展趋向作一简介。 Sprayed concrete support technology has been widely used in domestic and foreign roadway engineering. Foreign research on wet jet has more than 30 years of history, has been engaged in more than 10 years. So far, two or thirty kinds of jet engines have been successfully developed at home and abroad. This paper picks out six or seven representative wet spraying machines, and gives an introduction to their basic structure, working principle and development trend.