引江济淮试验工程膨胀岩膨胀特性试验研究

摘要

The swelling properties of remodeled swelling rock were carried out in the test section project of leading water from Yangtze to Huaihe River. By the test of free swelling ratio, swelling ratio under different pressure and saturated direct shear test, the properties of swelling ratio under different initial water content and different pressure were explored; the relationship between expansion ratio with initial expansion rate was analyzed. The conclusion show that initial expansion rate is quadratic positive correlated with expansion ratio, the strength parameters are negative correlated with expansion ratio.%对引江济淮试验工程的膨胀岩进行膨胀特性试验研究.通过对膨胀岩重塑样进行无荷、有荷膨胀率及饱和直剪试验,探究不同初始含水率和荷载下的膨胀率变化规律;分析了膨胀率与初始膨胀速度、强度参数间的关系,得出初始膨胀速度与最终膨胀率成二次函数正相关,强度参数随膨胀率的增大而减小.