巷道底板泥岩泥化物固化体的力学性能  

Mechanical Properties of Stabilized Slaking Mudstone(SSM) on Roadway Floor

作　　者：车平[1] 黄宏伟[1] 薛亚东[1] 张日晨 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]神华集团神东煤炭公司研究院,内蒙古鄂尔多斯017209

出　　处：《建筑材料学报》2007年第6期657-663,共7页Journal of Building Materials

摘　　要：为避免煤矿巷道底板泥岩泥化物清淤抛弃产生的环境污染问题,提出了将泥岩泥化物快速固化后作为巷道路面基层材料的处理方法,并为此研制了一种高效固化剂.通过不同固化剂掺量、不同养护龄期泥岩泥化物固化体的无侧限抗压试验,对该固化体的强度与变形规律进行了研究.研究结果表明:对于掺15.0%(质量分数)固化剂的泥岩泥化物固化体,其3 d无侧限抗压强度可达28 d的85%,即该固化体具有十分明显的快硬早强特性,可以作为巷道路面的基层材料;最低固化剂掺量与龄期相关,并与龄期呈对数关系,与固化系数呈线性关系.Mudstone floor of coal mine may become softer and weaker due to argillization, especially to be exposed to a very humid working environment for just several days. In order to stabilize slaking mudstone efficiently instead of removing it, a new type of solidifying-agent was developed. To identify the mechanical properties of stabilized slaking mudstone and possibility as base material of roadway floor,a series of experiments were carried out on specimens prepared at different dosages of solidifying-agent and curing time. The test results show that the 3 d unconfined compressive strength of stabilized slaking mudstone with 15.0%（by mass） dosage of solidi flying-agent can get 85% of 28 d unconfined compressive strength. The analytical results show that it is possible for stabilized slaking mudstone to be used as base material. And, the treatment avoids the environmental pollution created by disposal method of slaking mudstone. Through analyzing the test results, it is concluded that the minimum solidifying-agent dosage is an agerelated factor. The minimum solidifying-agent dosage relating to curing time reduces linearly with solidification coefficient and reduces with curing time by following a logarithmic function.

关 键 词：泥岩泥化 泥岩泥化物固化体 巷道底板 最低固化剂掺量 力学性质 

分 类 号：TU411[建筑科学—岩土工程]