为解决极端软硬不均、极硬岩（硬度超过180 MPa）等复杂地质条件下，隧道掘进机破岩过程中刀具破岩效率低及“啃不动”的问题，采用滚刀岩机作用综合试验台，搭载高压水射流装置，采用不同的水射流参数及掘进参数对花岗岩试样开展破岩试验，研究不同条件下水射流辅助机械滚刀破岩对掘进参数及效率的影响。通过试验获得水射流破岩合理的靶距与压力，探明水射流与机械滚刀交叉轨迹复合破岩、同轨迹复合破岩相对于纯机械滚刀破岩刀盘推力、转矩及破岩效能的变化特性。
When tunnel boring machine tunneling in complex
geological conditions, such as extremely uneven soft and hard rock with hardness
exceeding 180 MPa, the cutter′s rock breaking efficiency is low
and cutterhead jams occur. To address these issues, a rockbreaking test is conducted on granite samples using a disc cutter
rockmachine interaction comprehensive test platform
equipped with a highpressure water jet device. The
influence of water jetassisted mechanical disc cutter
rockbreaking on tunneling parameters and efficiency
under various conditions is investigated using various water jets and tunneling
parameters. The reasonable target distance and pressure of water jet rockbreaking are obtained, as well as the crosstrack
of the water jet and mechanical disc cutter, the change characteristics of
thrust, torque, and rockbreaking efficiency of the
cutterhead of the same track composite rockbreaking
and relatively pure mechanical disc cutter rockbreaking
are validated.
