According to the characteristics of basalt in guizhou province , in combination with weathering features of basalt , the design of trenches and side - slope are discussed , especially the design of side - slope of the contacting part between basalt and limestone is studied , in order to make the roadbed design safe and reasonable and reach the requirement 摘要根据贵州省玄武岩出露特点，结合玄武岩的风化特点，探讨玄武岩路段路堑边坡设计，特别是对玄武岩与灰岩接触部位的边坡设计提出了重点研究，使路基设计既安全合理，又达到环境保护的要求。
The slope geometry is variable quantities , and the reliable safety and reliability are main limiting factors . according to the above factors , a optimized model for designing high loess slope is established . this model ' s concept is precise , and its physical meaning is confirm , people who do designing work can see this model as a means 最后，为了使边坡设计获得最佳工程效果，本文在崔政权建立的优化公式： c = a + pf ? b的基础上，全面考虑施工造价和风险造价，运用数学原理和优化理论，用费用?效益分析方法，以最小总期望造价为目标函数；以坡型、坡比为设计变量，以安全可靠为主要约束条件，建立了黄土高边坡的优化模型。
The following two chapters make of the third part . chapter five analyses the failure factors of test model and identifies the valid scope of two - part wedge theory . chapter six extends the valid scope of two - part wedge theory , and puts forward integer slide theory , then uses the extended theory calculating a concrete project , seismic design suggestions are proposed finally 第三部分包括第五章和第六章，第五章对试验模型的破坏影响因素进行数值分析，确定了“双滑楔体”理论的适用范围，并对各种破坏因素进行了分析；第六章拓广“双滑楔体”理论适用范围，补充介绍了整体滑动理论，应用拓广后的理论计算实际工程，为实际工程的基坑边坡设计提供参考依据。
