摘要
目前,注浆法已普遍应用于矿层开采后覆岩发生了较严重的垮塌、滑落采空塌陷区,或经稳定性评价处于欠稳定的公路路基部位。由于掺有水玻璃的水泥浆液以其具有凝固速率可控性强、材料来源广以及浆液不流失等特点,能起到及时填充、加固、防水堵漏等目的,因而在采空区治理工程中得到了广泛的应用。依托山西吕梁环城高速公路郭家沟1号大桥桥下采空区治理工程,在1∶1~1∶1.5的水固比范围内,进行了纯水泥浆液和水泥-水玻璃浆液的黏度和结石率室内对比试验,研究发现同比例浆液在掺加水玻璃前后结石率差异值越来越小,黏度差异值却越来越大。
Relying on a highway bridge under the mined-out area treatment engineering in Shanxi Province, this paper carried out the viscosity and stone rate indoor contrast experiment of pure cement slurry and cement- water glass slurry within a certain water solid ratio range. The research found that the difference of stone rate was getting smaller and smaller, viscosity difference value was bigger and bigger with the same proportion of slurry before and after mixing with the water glass.
出处
《山西交通科技》
2017年第1期19-21,60,共4页
Shanxi Science & Technology of Transportation
关键词
采空区
水泥浆液
水泥-水玻璃浆液
黏度
结石率
mined-out area
cement slurry
cement-water glass slurry
viscosity
stone rate
