摘要
石膏质岩分布广泛,其膨胀特性对公路隧道支护结构的设计影响巨大。为了研究石膏质岩的膨胀特性,以宜巴高速公路凉水井隧道区出露的石膏质岩为研究对象,通过硬石膏岩粉末进行模拟研究,分别开展了自由膨胀率、膨胀率及膨胀力试验,在此基础上分析了石膏质岩膨胀特性的影响因素。
Gypsum rock is widely distributed. Its expansion characteristics have a big effect on the design of highway tunnel supporting structure. In order to study the expansion characteristics of gypsum rock, we take the gypsum rock exposed in Liangshuijing tunnel area of the Yichang - Badong Expressway for example, using anhydrite powder to conduct simulation study, the free swelling rate, swelling rate and expansion force test are carried out respectively, based on which, the influencing factors of gypsum rock expansion characteristics are analyzed.
出处
《路基工程》
2017年第3期147-150,共4页
Subgrade Engineering
关键词
石膏质岩
膨胀特性
影响因素
试验研究
tunnel project
gypsum rock
expansion characteristics
influencing factors
