钻探工程2024，Vol.51Issue(3)：37-44,8.DOI:10.12143/j.ztgc.2024.03.005
钻遇复杂溶洞群注浆处置材料室内试验研究
Indoor experimental study of grouting and disposal materials for drilling complex cavern clusters
摘要
Abstract
Taking a shield tunneling project section in Xiaoshui as a case study,research was conducted to solve the key problem of the proportioning of grouting materials under karst geological conditions.A series of pre-tests were carried out in the pre-test period using raw materials such as clay,sand,gravel and cement,on the basis of which orthogonal tests on the factors of paste slurry proportioning were carried out by means of in situ soil extraction.The test results show that the dry clay and water-cement ratio are the factors that have the greatest influence on the compressive strength of the paste;The main influencing factor of the slump of the paste is the water-cement ratio,and the mixing amount of dry clay and sand contributes to the slump quite a lot;In terms of the compressive strength,the degree of contribution is in the order of the water-cement ratio>dry clay>sand.Considering the performance parameters and economy of paste slurry,it is recommended to choose No.6(A2B1C3)paste slurry as the filling grouting material for this construction.The results of the study show that the preparation of paste slurry using clay and mechanism sand from the construction site can meet the requirements of the Design Institute for the performance index of karst filling materials.关键词
注浆工程/注浆材料/溶洞群/膏浆配比/盾构施工Key words
grouting engineering/grouting material/cavern clusters/paste slurry proportioning/shield tunneling分类
天文与地球科学引用本文复制引用
魏涛,刘利松,严文钦,王乐,吉文龙,孙平贺..钻遇复杂溶洞群注浆处置材料室内试验研究[J].钻探工程,2024,51(3):37-44,8.基金项目
国家自然科学基金(编号:414010113) （编号:414010113）
