人工砂在隧道喷射混凝土支护中的应用  

APPLICATION OF ARTIFICIAL SANDS IN SHOTCRETE SUPPORT OF TUNNEL

作　　者：王朝东[1] 徐光苗[1] 陈建平[2] 

机构地区：[1]中国科学院武汉岩土力学研究所,武汉430071 [2]中国地质大学,武汉430075

出　　处：《岩石力学与工程学报》2003年第10期1749-1752,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：人工砂是机制砂和混合砂的总称,在砂源缺乏地区经常在建筑、矿山、水利工程中得到使用。河南焦晋高速公路孤山隧道利用人工砂的一种即机制砂进行了喷射混凝土支护。通过试验和工程实践,对人工砂的物理力学特性进行了分析研究,并对人工砂代替天然砂在隧道喷射混凝土支护中的技术可行性、经济可行性和实施可行性等的优缺点进行了对比。结果表明,人工砂代替天然砂用于隧道喷射混凝土支护技术可行、经济节省、安全可靠,值得进一步推广使用。Artificial sand is the generalization of machine-made sand and mixed sand,and has been widely used in construction,mining and irrigation works in the region of scarcity of natural sand. One kind of artificial sands,machine-made sand,has been used in shotcrete supporting for Gushan tunnel of Jiaojin thruway,He′nan province. Based on the testing and practice results of this project,the physical properties of artificial sands and feasibilities to replace natural sands with artificial sands in three aspects of technology,economy and implementation for shotcrete support of tunnel are studied. The results show that the proposed technique is feasible,thrifty and reliable,so that it merits popularization.

关 键 词：人工砂 隧道 喷射混凝土 支护 建筑材料 天然砂 

分 类 号：U455.71[建筑科学—桥梁与隧道工程]