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一、前言高温蒸汽（ｔ≤３００℃，Ｐ≤１．３ＭＰａ）管道采用直埋敷设方式埋设管道，国内从五十年代起虽已有使用，但是真正使用得比较多的是在１９９０年以后。１９９４年中国城镇供热协会在编制行业“九五科技发展规划时，将高温蒸汽管道直埋技术的开发与研究列入了重...
I. INTRODUCTION High-temperature steam (t≤300°C, P≤1.3MPa) Pipes are laid by direct burial, but they have been used domestically since the 1950s, but they have been used more often since 1990. In 1994, the China Urban Heat Supply Association included the development and research of high-temperature steam pipe direct burial technology in the preparation of the “Ninth Five-Year Plan for Science and Technology Development...