裂隙岩体水汽场湿度季节变化规律研究

裂隙岩体水汽场湿度指标是裂隙岩体水汽场性质的一个重要组成部分。通过在河南省宜阳市锦屏山四个季度(2015～2016年)的野外监测,得到春、夏、秋、冬四个季节裂隙岩体水汽场温湿度监测数据,研究了裂隙岩体水汽场湿度季节变化规律。结果表明,横向上,在裂隙岩体浅部区域(孔深小于50cm),湿度季节变化规律为春季到夏季增大,夏季到冬季持续减小,冬季到春季增大;在裂隙岩体深部区域(孔深大于80cm),湿度季节变化规律为春季到秋季持续增大,秋季到冬季减小,冬季到春季增大。纵向上,春季、夏季、秋季裂隙岩体内水汽在水汽分压作用下由岩体上部向下部运移;冬季水汽在水汽分压作用下由岩体下部向上部运移。

Study of Seasonal Variation Law of Water Vapor Field Humidity in Fractured Rock Mass

The water vapor field humidity index of fractured rock mass is an important part of the water vapor field properties of fractured rock mass. Through field monitoring in the four quarters of Jinping Mountain in Yiyang from 2015 to 2016, monitoring data of temperature and humidity of water vapor field in fractured rock mass in spring, summer, autumn and winter were obtained. And then the seasonal variation of water vapor field humidity in fractured rock mass was studied. The results show that in the horizontal direction, in the shallow part of the fractured rock mass (monitoring hole depth less than 50 cm), the seasonal variation of humidity increases from spring to summer, and decreases continuously from summer to winter, and increases from winter to spring. In the deep part of the fractured rock mass (monitoring hole depth greater than 80 cm), the seasonal variation of humidity increases from spring to autumn, decreases from autumn to winter, and increases from winter to spring. In the longitudinal direction, the water vapor in the fractured rock in spring, summer and autumn is transported from the upper part of the rock mass to the lower part under the action of water vapor partial pressure; the winter water vapor migrates from the lower part of the rock mass to the upper part under the action of water vapor partial pressure.