人民长江2024，Vol.55Issue(8)：174-179,186,7.DOI:10.16232/j.cnki.1001-4179.2024.08.023
盾构机扁齿型和球齿型镶齿滚刀破岩性能对比研究
Comparative study on rock breaking performance of flat tooth and ball tooth inserted disc cutter
摘要
Abstract
With the maturity of the shield machine construction technology,the shield machine plays a critical role in the water conservancy tunnel projects.However,series of problems such as severe cutter wear,intensified cutter consumption and low exca-vation efficiency are prone to occur during the construction of shield tunneling machines under complex geological conditions.To clarify the change rule of rock breaking performance under different rock properties,improve the rock breaking efficiency and serv-ice life of inserted tooth disc cutter,and to ensure the safe and efficient construction of water conservancy tunnel projects,based on a nonlinear finite element dynamics software,we carried out a simulation on rock breaking performance under different rock char-acteristics for inserted tooth disc cutter of flat tooth and ball tooth respectively.The optimal combinations of two types of tooth disc cutters and penetration under different rock properties were investigated through several sets of simulations,and the simulation re-sults were verified by indoor rock-breaking tests.The results indicated that under the geological conditions of tuff,there was less difference between breaking load of flat tooth and ball tooth of inserted disc cutter,but the breaking efficiency of ball tooth inserted disc cutter was higher.Under the geological conditions of sandstone and granite,the ability of flat tooth disc cutter to penetrate into the rock was stronger,and the efficiency of rock breaking could be further improved.In addition,under different rock characteris-tics,the specific energy consumption of the two types of tooth disc cutters showed a trend of decreasing and then increasing with deepening of penetration,and the minimum value occurred around the penetration degree of 6 mm.The results of this study can provide a reference for the selection of shield machine cutters for tunneling projects,and promote the development and application of tooth disc cutters.关键词
盾构机/镶齿滚刀/岩石特性/破岩性能/有限元方法Key words
shield machine/inserted disc cutter/rock property/rock breaking performance/finite element method分类
建筑与水利引用本文复制引用
陈辰,郭宏海,傅杰,罗星臣..盾构机扁齿型和球齿型镶齿滚刀破岩性能对比研究[J].人民长江,2024,55(8):174-179,186,7.基金项目
安徽省科技重大专项(202003a05020040) （202003a05020040）
湖南省长沙市岳麓山大学科技城管理委员会"揭榜挂帅"项目"掘进机高性能长寿命刀具" （）
