高强高抗渗冻结井壁混凝土配制及其试验研究  

High Strength High Permeability Frozen Shaft Lining Concrete Preparation and Its Experimental Study

作　　者：薛维培 姚直书[1] 宋海清[1] 彭世龙 孔干 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《煤炭技术》2018年第1期22-25,共4页Coal Technology

基　　金：国家自然科学基金面上项目(51674006);安徽省高校学科(专业)拔尖人才学术资助项目(gxbj ZD09);安徽理工大学青年教师科学研究基金项目(QN2017211)

摘　　要：为解决特厚冲积层井筒支护难题及冻结壁解冻后井壁渗漏水严重的问题,采用原材料优选、提高胶凝材料用量、增大砂率和降低水胶比等方法,开展正交试验得到了最优配合比。再由物理力学性能试验结果得到了冻结井壁混凝土立方体标准抗压强度与棱柱体轴心抗压强度、弹性模量之间的换算关系,以及劈裂抗拉强度、泊松比等参数,为工程应用提供了设计依据。In order to solve problem of wellbore support in special thick alluvium, and serious problem of seepage in shaft after thawing, using raw materials optimization, improve gelled material consumption, increase the methods of sand ratio and reduce the water cement ratio, orthogonal experiment was carded out to Obtain the optimal mix proportion. Based on the results of physical and mechanical properties, conversion relationship between cube compressive strength and compressive strength and elastic modulus of frozen shaft lining concrete is obtained, and splitting tensile strength, Poisson＇s ratio and other parameters, which provide the basis for engineering application.

关 键 词：特厚冲积层 冻结井壁 配合比 

分 类 号：TD265[矿业工程—矿井建设]