世界核地质科学2025，Vol.42Issue(2)：329-342,14.
基于线性破岩试验的小直径盲井掘进机边缘滚刀破岩振动特征分析
Analysis for the vibration characteristics of gage cutter of small diameter blind shaft boring machine based on linear cutting test
摘要
Abstract
The Beishan high-level radioactive waste disposal pit in China is planned to be excavated by a small-diameter blind shaft boring machine,and the gage cutter is the key component of the boring machine to control the accuracy of the hole and the most vulnerable to loss.Its reasonable design and layout are the premise to realize the efficient excavation of the high-level radioactive waste disposal pit.In this paper,the linear cutting test of gage cutter is carried out for Beishan granite by using 11 inch round edge cutter preselected by small diameter blind shaft boring machine.The rock breaking process and vibration characteristics of gage cutter under different penetration depth and installation angle are analyzed.The test results show that under the same penetration depth,the average normal force of the 20° installation angle cutter is generally larger,the lateral force is smaller,but the average rolling force of the two cutters are closer.Under the same penetration depth,the average peak value of triaxial vibration acceleration of gage cutters with different installation angles is the largest in the lateral vibration acceleration,followed by the normal vibration acceleration and the tangential vibration acceleration.The larger the installation angle,the greater the difference in the triaxial vibration acceleration of the gage cutters,the greater the lateral vibration intensity,and the higher the frequency of the lateral high-amplitude vibration.With the increase of penetration depth,the triaxial vibration acceleration of the gage cutter increases,and the frequency of strong vibration in the rock breaking of the gage cutter increases.The influence of penetration depth on the lateral vibration acceleration of the gage cutter is more significant than that in the normal and tangential vibration accelerations.This study can also provide a reference for the optimal layout of the cutterhead of small-diameter blind shaft boring machine.关键词
小直径盲井掘进机/边缘滚刀/安装倾角/贯入度/振动特征Key words
small-diameter blind shaft boring machine/gage cutter/installation angle/penetration depth/vibration characteristics分类
土木建筑引用本文复制引用
马函,殷丽君,龚秋明,马洪素..基于线性破岩试验的小直径盲井掘进机边缘滚刀破岩振动特征分析[J].世界核地质科学,2025,42(2):329-342,14.基金项目
中国国家原子能机构核设施退役治理专项(编号:科工二司[2020]194号)资助 Supported by the National Atomic Energy Agency of China Special Fund for Decommissioning of Nuclear Facilities Research Project Science and Industry Division(No.科工二司[2020]194) （编号:科工二司[2020]194号）
