本文采用ABAQUS数值软件,对钾盐矿开挖过程进行单齿模拟,通过调整贯入度,锥齿顶角,安装倾角,双齿间隔,得出最优参数.数值模拟研究表明,贯入度4 mm,锥齿顶角90,安装倾角15是最优齿形参数,双齿间隔在16 mm为最优安装间隔.Bevel teeth have a wide range of applications in various rock breaking excavation scenarios...
针对TBM穿越断层破碎带围岩破碎易卡机的问题,依托新疆某供水隧洞,通过现场试验,数值模拟和现场监测的方法系统对比分析了地表预注浆的加固效果.研究结果表明:TBM穿越断层破碎带发生塌方卡机的风险较大.地表预注浆加固增强了断层破碎带围岩的完整性与稳定性,降低了隧洞开挖引起的围岩收敛变形,变形降幅可达70.44%.地表预注浆...
Tunnel boring machines (TBMs), a type of engineering machinery, have been widely applied in the construction of tunnels, such as water conveyance, highway, and railway tunnels [1]. With the development of information technology [2] and construction of big data management platforms [1], the In...
Rock-breaking efficiency of full-face rock tunnel boring machine (TBM) is closely related to the performance of the disc cutter and the characteristics of the rock mass. In the point of view of mesomechanics, the particle flow code (PFC) is used to establish a numerical model of the rock ...
Our products are widely used in public utilities, constructions of tunnels, highways, subways, mines, metallurgy and other civil engineering applications. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always availabl...
在综合考虑围压及刀具切削顺序的前提下,利用二维离散单元法建立双把TBM刀具切削节理不发育岩石的仿真模型,模拟出岩石裂纹的生产与扩展全过程。根据获得的裂纹扩展形态以及破碎块形成规则,总结归纳出四种典型破碎模式,并从刀具破岩效率、岩石裂纹扩展能力以及岩石破碎块度三个方面对刀具破岩机理进行进一步研究。仿真结果...
Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers. Relat...
the hydraulic doors provided essential access for breaking the boulders to a size that allowed for their passage to successfully complete the tunnel. When the crew ran into unanticipated potentially petroleum contaminated area (PPCA) ground conditions, the crew persevered by using a full-face mask...
Project case analysis of abnormal cutter wear In TBM tunneling, the loss of disc cutter is the most serious as a component in direct contact with the rock. The cutter failure form is mainly divided into two aspects, normal wear and abnormal damage. Normal wear is also called uniform wear, ...
School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 02841, Korea Heeyoung Chung, In-Mo Lee & Jee-Hee Jung Advanced Infrastructure Research Team, Korea Railroad Research Institute, Uiwang, 16105, Korea Jeongjun Park Corresponding author Correspondence to Jeongjun Park...