In accordance with the construction of xi ' ning - huangyuan first class highway and machangyuan - ping ' an high - speed highway , based on a good deal of investigation , this paper studies the geologic character and the main physical mechanics of the collapsibility loess in qinghai . this paper also studies the foundation treatment effect with dynamic consolidation , impact rolling , lime pile and lime - soil cushion . to dynamic consolidation , much attention is given to the relationship between the ramming energy and the effective depth 本文结合西湟一级公路、马平高速公路建设，对青海地区湿陷性黄土进行了大量勘探调查，总结研究了青海地区湿陷性黄土的地质结构特点、主要的物理力学性质及其规律；并通过现场试验，系统地研究了强夯、冲击碾压、灰土挤密桩和灰土换填等地基处理方法的施工工艺及处理效果。
Based on field investigation of loess slope and spot sample test of loess slope in typical road section of existing highway and highway under construction in sanmenxia area , the stability characteristic of loess slope and the chief physical and mechanical property of natural loess in this district are studied in this thesis 本文在对三门峡地区已建和在建公路黄土边坡野外调查和对典型路段黄土边坡现场取样试验基础上，研究了三门峡地区黄土边坡的稳定性特点及天然黄土的主要物理力学性质。
By studying the strength behavior to these rocks , their shear strength ranges were given in different engineering environmental conditions . based on a series of triaxial tests on the soft clayey rocks , parameters of the constitutive model are provided , which are necessary in numerical analysis and engineering computation . according to the results in this study , mechanism of deformation and failure of soft clayey rocks was explored , and the data on their physical and mechanical properties were collected in guangdong 结合现代土力学原理，系统分析了风化泥质软岩的结构特征，膨胀特性；探讨风化泥质软岩的强度特性，给出了风化泥质软岩不同工程环境条件下的抗剪强度取值范围；在三轴排水剪试验成果基础上，提供了工程数值分析和计算所需本构模型参数，揭示了风化泥质软岩的变形破坏机理，建立广东风化泥质软岩的物理力学性质特征资料，为工程决策提供参考。
Based on the analyses of the physical and mechanical properties of ore / rock and the behavior of ground stress field in the deep deposit of fankou lead - zinc mine , the authors researched the unloading measures to prevent and control rock burst in mining the deep deposit , and carried out numerical simulations of the stress distribution under different unloading mining situations by means of 3 - d elastic - plastic finite element program , so as to give decision - making basis for controlling rock burst in exploiting the deep deposit of fankou lead - zinc mine 根据凡口铅锌矿深部矿岩体的物理力学性质及地应力场特性，对凡口矿深部矿床开采的岩爆防治措施进行了研究，并应用三维弹塑性有限元程序对各种防治措施引起的应力分布进行了数值模拟分析，以期为凡口铅锌矿深部矿床开采的岩爆控制提供决策依据。
Then on the basis of experimental data of collapsible loess of speedways from weinan to tongguan and xianyang aerodrome , analyzing influential factors of collapsibility , establishing expressions between collapsible coefficient and physical mechanical character parameters via regression analysis , and discuss preliminarily collapsible mechanism of loess at guanzhong area 重点以渭潼高速公路和咸阳机场专用高速公路沿线湿陷性黄土的试验资料为基础，对黄土湿陷影响因素进行了分析，通过回归分析建立了湿陷系数与各物理力学性质指标之间的关系式，并对关中地区黄土的湿陷机理进行了初步探讨。
Based on the systematic shearing strength tests the intact expansive soil in the xiangjing highway , the mechanical feature and strength characteristic of the expansive soil is studied in detail in this article . moreover , a series of parameters about the shearing strength are acquired , which is typical to the expansive soil in the xiangjing engineering and the related project and so can be used as reference for the road cutting slope stability analysis considering the specific of the xiangjing project , a classification is suggested , which is complementary to the existed norm 本文对襄荆高速公路膨胀土的物理力学性质及强度特性进行详细的分析，开展了系统的原状膨胀土的抗剪强度试验，并得到一系列有关襄荆高速公路膨胀土的抗剪强度参数，对于本工程以及相似工程具有一定代表性，可供公路路堑边坡稳定计算分析时参考。
Based on the engineering geological survey of these two expressways the physical dynamics character indices and the standard bearing forces of each soil layers as well as the total settlement of the ground soil were determined and worked out . studies show that subgrade bearing forces of some sections from both expressways could not meet design requirement . the general settlement and difference settlement form greater hazards and need treatment 依据宣大、京秦线的工程地质勘查资料，确定各土层的物理力学性质指标、各土层的标准承载力，并计算地表土的总沉降量，表明这两个项目中均有个别段落的地基承载力不能满足设计要求，总体沉降利差异沉降危害较大，需要处理。
Through test and research of zipingpu reservoir concrete faced rockfill dam ' s material and finite element analysis of the dam , physics and mechanical characteristics were studied , such as characteristics of rock , compaction , permeability , compressibility and so on , of the no viscous moraine and gravel . at the same time , the mutual relation of physics and mechanical characteristics were studied 对紫坪铺面板堆石坝筑坝料试验研究，了解堆石料等无粘性粒状土的岩性、级配、压实性、渗透性、压缩性等物理力学性质，以及物理性与力学性之间的相互关系。
The dissertation was relied on the project of national nature science foundation project formation and failure of hard crust on the subaqueous delta of yellow river ( contract no . 141720888 ) , and objective to research dynamic variation of engineering geological environmental factors i . e . , topographic and morphologic features , composition and structure , physical and mechanical properties on the subsurface of yellow river delta , that was induced by wave loading action 本学位论文以国家自然科学基金面上项目“黄河口水下斜坡硬壳的形成与破坏” (项目号： 141720888 )为依托，旨在研究波浪作用导致的黄河三角洲表层工程地质环境要素，即形貌特征、物质组成、物理力学性质的动态变化过程。
