摘 要 　　　大坡度隧道（巷道）的掘进过去很少用到盾构，一般用钻爆法等传统方法施工，随着国家建设的快速进行，这些方法由于施工速度慢，已经不再满足要求快速、经济的大坡度隧道（巷道）的建设需求。与此同时，盾构法安全、高效、快速、环保等优点在施工领域得到了更大的体现，运用盾构法在大坡度隧道（巷道）中施工是一种必然趋势。当然，不能否认，由于理论水平较低，施工经验也严重欠缺，运用盾构法对大坡度隧道（巷道）施工还有许多问题需要研究和解决，其中管片衬砌结构的受力和围岩稳定性的问题对工程建设影响很大，研究它们具有深远的意义。 　　　本文依托新街台格庙矿区的大坡度巷道建设项目，探讨了大坡度隧道（巷道）管片参数的选型；提出了大坡度隧道（巷道）外荷载及管片受力的计算公式；通过运用惯用法，对新街台格庙矿区盾构管片受力进行了计算，得到了埋深对管片受力的影响规律；然后对坡角增大后管片受力进行计算，比较后得到了坡角对管片受力的影响规律；提出了大坡度隧道（巷道）盾构推力的计算公式，并对新街台格庙矿区盾构推力进行了计算，得到了埋深对盾构推力的影响规律；然后计算了坡角增大后的盾构推力，比较总结出了坡角对盾构推力的影响规律；运用FLAC3D对大坡度隧道（巷道）周边围岩变形情况进行了模拟，得到了新街台格庙矿区的围岩变形情况；通过与增大坡角后的围岩变形情况进行对比，得到了坡角对围岩变形的影响规律。 　　　本文得到了大坡度隧道（巷道）在管片受力、盾构推力和围岩稳定性方面随着埋深与坡角的变化而呈现的规律，对相关基础理论研究具有一定的借鉴意义，对施工具有一定的参考价值。

Abstract 　　　Generally, some traditional methods such as drilling and blasting method have been widely used in large slope tunnel drivage while Shield has rarely been used. Due to the low speed in large slope tunnel constructions, and they are no longer satisfying the construction requirements of large slope tunnels along with the rapid development of national construction. However, Shield, with its’ advantages as safety, efficient, express, pro-environment, etc., has obvious benefits in the field of construction, and it has become an irresistible trend to apply Shield in the construction of large slope tunnels. We cannot deny that due to the low level of theory and the serious lack of construction experience, a lot of problems need to be solved when Shield have been used in large slope tunnel. Segment mechanics and surrounding rock stability have a great influence on engineering construction, study them has profound significance. 　　　This thesis set the construction of the large slope tunnels in Xinjietaigemiao mine as a background, the type selection of segments in large slope tunnels is discussed, the calculation formulas of the external load and segment mechanics in large slope tunnels is identified, by using GUANYONGFA, the segment mechanics is calculated, and the influencing rule of burial depth on segment mechanics is concluded. Then the influencing rule of slope angle on segment mechanics was summarized after the calculation of segment mechanics when increasing the angle between the large slope tunnel and the ground surface. A suitable formulas for the calculation of Shield thrust in large slope tunnels is put forward. And through calculating the Shield thrust in Xinjietaigemiao mine area, the influencing rule of burial depth on Shield thrust is concluded. Then the influencing rule of slope angle on Shield thrust is summarized after the calculation of Shield thrust when increasing the angle between the large slope tunnel and the ground surface. The adjoining rock stability of large slope tunnels is simulated with the use of FLAC3D, from which the deflection of surrounding rock in Xinjietaigemiao mine area is found. Then through a comparison with the deflection when increasing the slope angel, the influencing rule of the increased slope angle of large slope tunnels on deflection is concluded. 　　　This thesis got the rules of segment mechanics, Shield thrust and adjoining rock stability as increased burial depth and increased slope angle, for related basic theoretical research, it has certain reference meaning, and construction, it has certain teaching value.