中文摘要：

提出一种适用于TBM工法修建高地应力深部斜井的管片衬砌配合碎石可压缩层的让压支护技术。结合台格庙矿区TBM施工的长距离斜井工程,采用有限差分与离散元的耦合计算方法,从围岩塑性区发展、管片衬砌接触力、管片衬砌弯矩和轴力分析碎石可压缩层的让压效果,从碎石可压缩层的压缩变形路径和颗粒移动特征角度揭示碎石可压缩层的让压机制。研究结果表明：碎石可压缩层的密实度和地层的地应力分布情况影响其让压效应,密实度主要影响接触力的大小,而地应力条件主要影响接触力的形状,从而影响管片衬砌的内力分布形状和大小;碎石可压缩层的让压机制由相互嵌挤作用和错动移位作用两部分组成。不同地应力组合和不同的密实度时,嵌挤作用和错动移位作用各自发挥的程度不同,从而引起碎石的压缩变形路径差异,最终导致不同的让压效果。研究结果对未来TBM工法修建深部斜井的支护结构型式设计具有一定参考价值。

英文摘要：

A yielding technology of segment lining combined with compressible crushed stone was proposed,which was suitable for deep inclined shaft construction using TBM method under high in-situ stress. The long distance inclined shaft constructed with TBM in Taigemiao mine area was investigated. The yield effect of compressible crushed stone was analyzed from several respects of the plastic zone development of surrounding rock,radial contact force behind segment lining,bending moment and axial force in segment lining. The yield mechanism of compressible crushed stone was revealed from the compressive deformation path and movement characteristics. The results showed that the in-situ stress distribution and compactness of crushed stone affected the yield result. The compactness affected the value of contact force while the in-situ stress condition affected the shape of the contact force,which affected the distributions and values of internal forces in segment lining eventually. The yield mechanism of crushed stone layer consists of two parts：mutual wedging action and dislocation displacement effect. The effects of the two parts varied with the compactness of crushed stone layer and the in-situ stress value and distribution,which caused the difference of the compressive deformation path,so that led to the different yield effect eventually.