冲孔陶土纠偏法的分析与改进

冲孔掏土纠偏法是一种对现场依赖很强,有很多施工盲点的纠偏方法。利用弹塑性分析、数值分析和有限元理论研究地基土体的稳定性,阐述了工程中出现的非正常现象的原因并提出设计公式,进而提出并实现预先设计。利用一个基于MATAB和ANASYS的复合程序流,将预先设计转化为顺序式设计流程。

过岭滑坡形成原因分析及防治处理建议

在山区高速公路的工程地质勘察过程中,经常性遇到各类山体滑坡,给地质选线及工程建设带来巨大影响,本文以宁上高速公路过岭滑坡为例,介绍该滑坡的形态及岩土特征,并进行针对性稳定分析,提出建议处理措施。

基于BIM新技术的陡坡填方梁场设计方法研究

桥梁工程中,预制梁场合理的布置和科学的规划对保证桥梁工程进度、控制成本有着非常重要的意义。对于复杂地形如陡坡及填方条件下梁场的稳定性分析至关重要,针对该条件下地形数据采集存在的局限性,地质条件的准确分析也存在困难。本文提出一种三维地形及地质建模方法,通过多源数据融合构建真实地形地质三维模型并进行陡坡及填方稳定性分析。结果表明,该方法对于复杂地形条件下大型预制梁场的选址及规划具有指导性意义。

Determination and stability analysis of ultimate open-pit slope under geomechanical uncertainty

In open-pit mines,pit slope as one of the important parameters affects the mine economy and total minable reserve,and it is also affected by different uncertainties which arising from many sources.One of the most critical sources of uncertainty effects on the pit slope design is rock mass geomechanical properties.By comparing the probability of failure resulted from deterministic procedure and probabilistic one,this paper investigated the effects of aforesaid uncertainties on open-pit slope stability in metal mines.In this way,to reduce the effect of variance,it implemented Latin Hypercube Sampling(LHS)technique.Furthermore,a hypothesis test was exerted to compare the effects on two cases in Middle East.Subsequently,the investigation approved high influence of geomechanical uncertainties on overall pit steepness and stability in both iron and copper mines,though on the first case the effects were just over.