【作者】 谭玉强；

【导师】 宋建波；

【作者基本信息】 贵州大学 ， 地质工程， 2009， 硕士

【摘要】 如何正确评价层状岩质的边坡稳定性、以及如何采取合理的支护方法,已成为山区工程建设中迫切需要解决的问题。本文在前人研究的基础上,划分了层状岩质边坡的类型,分析了其变形机理,建立了相应的判别依据,讨论了层状岩质边坡的稳定性评价理论及支护方法,最后通过实际工程进行了验证。论文取得如下成果:(1)以边坡结构参数(边坡走向与岩层走向之间的夹角、边坡倾角、岩层倾角及其倾向之间的关系)为依据,将层状岩质边坡划分为水平坡、顺向坡、切向坡、垂向坡和反倾坡5种类型。(2)分析了层状岩质边坡的变形机理,将其归纳为滑移—压致拉裂、滑移—拉裂、滑移—弯曲、弯曲—拉裂、滑移—拉裂—剪切、蠕滑—拉裂和碎裂—滑移7种失稳机理,并建议了7种失稳机理的稳定性判别依据。(3)根据层状岩质边坡的变形破坏机理,将层状岩质边坡划分为平面滑动、弧面滑动、楔体(块体)滑动、倾倒破坏和溃屈破坏5种破坏模式,并用数值模拟软件对其进行了验证,说明了破坏模式划分方案的合理可行性。(4)以极限平衡理论和块体理论探讨了层状岩质边坡的稳定性评价理论。针对层状岩质边坡划分的5种破坏模式,建议了稳定性计算方法及稳定性系数的计算公式。(5)根据层状岩质边坡的特点,建议了5种常用的边坡支护方法及4种常用的边坡防护方法,并论述了其设计方法及适用条件。(6)对某层状岩质边坡进行了稳定性评价分析,并采用建议的支护及防护方法进行了边坡处理,与实际相符合。本论文根据层状岩体的特点,较系统地研究了层状岩质边坡的变形失稳机理、破坏模式划分方案、稳定性评价理论、支护及防护设计方法,对解决山区工程建设中遇到的层状岩质边坡问题具有一定的参考价值。更多还原

【Abstract】 It is a instancy problem that how to estimate the stability of layered rock slope rightly and adopt reasonable protection methods in engineering constructions with mountain. The paper carves up the types of layered rock slope, analyses its distortion mechanism, establishs corresponding criterion, discusses the stable appraisal theory and supporting design methods of the layered rock slope, go along validate through some engineering. The paper gain some harvest as follows:(1) Based on side slope structural parameter(angle between side slope trend and rock bed trend, side slope inclination angle, the rock bedded inclination angle and tendency relations), layered rock slope is carved into five types, including arrange slope, shear slope, droop slope, reverse slope.(2) Based on distortion mechanism, layered rock slope is carved up seven loseing steady mechanism including slippage-rip inhbitted, slippage-rip, slippage-bend, bend-rip, slippage-rip-cut, wriggle-rip, chip-slippage, and make suggestions seven criterion to seven lose steady mechanism.(3) Based on the distortion mechanism, layered rock slope is carved up five destroy pattern,including plane slippage, arc slippage,wedage slippage, dumpage slippage, bend destroy, and go along with simulate and turn out that it is feasibility.(4) Using limit-balance thoery and block thoery, discuss stability evaluation means and suggest five stablity calculate means, stablity expressions to five five destroy pattern.(5) Based on the characteristics, suggest five protection methods and four defend methods frequently, and discuss design method,apply condition each kind of way.(6) Go along stability evaluation and deal with the slope within adopt propositionaly timbering, defend method to some layered rock slope answer for the fact. It indicates that it is right and viable.The paper bases the bedded rocks’ feature to the bedded rocks nature side slope from the distortion mechanism to destroy pattern, stable evaluation, supporting method, defend method design, go along study completely and by the numbers. The accomplish of the paper has some referential value to the layered rock slope problem which in mountains engineering construction.更多还原