褶皱构造对工程的影响

The impact of the project folds 褶皱构造对工程的影响褶皱构造对工程的影响 学院 学院 土木工程与建筑学院 专业 专业 土木工程专业 班级 班级 土木 1105 姓名 姓名 乔宇航 学号 学号 1119014110 The impact of the project folds Crustal rock composition it is strongly affected by tectonic stress so that the formation of a series of wavy curved rock without losing its continuity structure called folds Fold structure is produced by plastic deformation of rock is one of the basic structure of the surface crust extensive development Sedimentary layers most evident in the massive rock is difficult to see Occurrence study fold shape type origin and distribution for the identification of regional geological structure and engineering geological conditions of great significance A curved folds of rock a complete waveform called folds Fold fold structure is composed of units consisting of several parts of the core wing axial shaft and hub and every fold has generally referred to fold factor The basic form is the anticline and syncline fold Fold fold is a combination of form a combination of two or more of the fold structure called folds Fold more intense in the region a single fold is relatively rare in the general case are linear alternating anticlines and synclines to extend substantially parallel to the same in combination with regular folds into different forms When the wings are folded many times the complexity level of the anticline or syncline large anticline composed of a large syncline or when called synclinoria or anticlinorium Folds have an impact on the following aspects of engineering and construction 1 the core of rock folds squeezed out by the level of action resulting in many fissures directly affects the level of integrity and strength of the rock in limestone karst areas also tend to make more developed so the core of a variety of architectural layout projects such as factories roads bridges tunnels etc must pay attention to the problem slump and gushing rock 2 arranged in the construction of the wing fold if the slope toward the excavation nearly parallel to the rock and the rock slope orientation and tendency consistent slope angle is greater than the rock slope inclination the phenomenon is likely to cause sliding along the floor If the angle between the direction of the slope toward the rock at 40 or more or both to the same and the opposite slope orientation and rock tendencies or both the same tendency but the strata dip greater excavation slope stability more favorable 3 For the tunnels deep underground works should generally be arranged in the folded wing department Because the tunnel through the rock in favor of a uniform and stable while the top of the rock under tension anticline may collapse Syncline is abundant storage lots 褶皱构造对工程的影响褶皱构造对工程的影响 组成地壳的岩层 受构造应力的强烈作用 使岩层形成一系列 波状弯曲而未丧失其连续性的构造 称为褶皱构造 褶皱构造是岩 层产生的塑性变形 是地壳表层广泛发育的基本构造之一 沉积岩 层中最为明显 在块状岩体中则很难见到 研究褶皱的产状 形态 类型 成因及分布特点 对于查明区域地质构造和工程地质条件 具有重要意义 褶皱构造中岩石的一个弯曲 一个完整的波形 称为褶曲 褶 曲是褶皱构造的组成单位 每一个褶曲都有核部 翼 轴面 轴及 枢纽等几个部分组成 一般称为褶曲要素 褶曲的基本形态是背斜 和向斜 褶皱是褶曲的组合形态 两个或两个以上的褶曲构造的组 合 称为褶皱构造 在褶皱比较强烈的地区 单个的褶曲比较少见 一般的情况都是线形的背斜与向斜相间排列 以大体一致的走向平 行延伸 有规律的组合成不同形式的褶皱构造 当在褶皱的翼部有 许多次一级的背斜或向斜组成的复杂大向斜或大背斜时 称为复向 斜或复背斜 褶皱构造对工程建筑有以下几方面的影响 1 褶皱核部岩层 出于受水平挤压作用 产生许多裂隙 直接影响到岩体的完整性和 强度高低 在石灰岩地区还往往使岩溶较为发育 所以在核部布置 各种建筑工程 如厂房 路桥 隧道等 必须注意岩层的坍落及涌 水问题 2 在褶皱翼部布置建筑工程时 如果开挖边坡的走向近 于平行岩层走向 且边坡倾向与岩层倾向一致