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Detailed studies are made as follows: Searching the key internal factors which can affects slope stability. According to the geological data which was gained by exploration investigation, establishing a geological model which can reflect rock mass characteristics;With analyzing the internal and exterior factors synthetically, the deformation and possible failure mechanism and mode of the cut slopes was confirmed which combines with stereoic projection and other techniques;The stabilities of the 14 high slopes are estimated synthetically by applicable design codes and guidelines. With the estimate result and some other analysis methods, the rock mass mechanical parameters of slope are identified;As a results, 14 high slopes fall into 4 categories based on rockmass characteristics and discontinuities. The stability and deformation of some typical slopes was analyzed with distinct element method by UDEC;The safety factor of some dangerous slopes are calculated by rigid limiting equilibrium method for coMParison.

首先着重研究影响坡稳定性的内在因素,主要是通过地质勘探、测量、现场观测等手段取得研究区地质体的基础地质资料,建立起能够反映地质体结构特征的地质模型;随后综合分析潜在的内外部影响因素,并结合赤平投影对坡可能的失稳模式或破坏机制作出判断;运用已有岩体质量分类方法对沿线14个高陡坡稳定性进行初步的评价,并结合试验研究、经验判断、工程类比等手段确定了坡体的岩体力学参数;根据稳定性初步评价结果将研究区14个高陡坡按开挖方式分为4大类,并利用离散元程序UDEC对各类典型高陡坡进行了稳定性计算分析;对潜在危险坡利用刚体极限平衡法求出了不同工况下的安全系数。

On the basis of gathering data from previous study and researching the stabilization and reinforcing technique of the typical high slope in west approach road, through in-situ tracking investigation and monitoring to the west road, and by way of studying the interaction between slope body and anchoring structure, monitoring data, the result of grey prediction and fuzzy comprehensive assessment, and adopting the idea of integrating prototype investigation and indoor experiment analysis, mechanism analysis and simulation research method, safety factor analysis and interacting relationship study, in-situ monitoring and safety evaluation, and using the theories of engineering geology, geotechnique, rock body mechanic, finite element method and fuzzy mathematics, this paper studies the long-term safety of the typical high slope specially.

本文在收集前人研究资料的基础上,采用原型调研与室内分析相结合、机制分析与模拟研究相结合、安全系数分析与相互作用关系研究相结合、现场监测与安全性评价相结合的思想,通过对鹧鸪山隧道西引道典型高坡的现场跟踪调研与监测,运用工程地质、岩土工程、岩体力学、有限元理论、灰色系统理论、模糊数学等先进理论和方法,在对西引道典型高坡的稳定性、整治与加固技术研究的基础上,通过坡地质体与锚固结构相互作用分析、坡监测数据分析、坡变形灰预测分析以及模糊综合评判等途径,重点对治理后的典型高坡的长期工程安全性进行了系统深入的研究。

With the help of the fundamental theory to singular measure differential system, Green's function matrix expression of solution and well-posed boundary condition are given, together with discussing the properties of the Green's function matrix under the influence of impulsive effect In section 5, based on Lyapunov function method, we investigate that the existence of the first boundary value problem to second-order singular system by macthing the solutions to the second boundary value problem; and the existence and uniqueness of three-point boundary value problem to third order singular system by macthing the solutions to two-piont boundary value problem.

第五部分借助Lyapunov函数法,通过将第二类值问题的解对结成第一类值问题的解,得到了二阶广义系统的第一类值问题解的存在性;通过将两点值问题的解对结成三点值问题的解,得到了三阶广义系统的三点值问题解的存在性和唯一性。

In this paper, several approximate methods are put forword to calculate the limited burring factor through analyzing stress and strain at the edge of the round-hole in the burring process.

这种极限变形程度可用极限翻系数来描述,即在翻过程中,翻系数(K =d0 /Dm,式中d0 、Dm 分别为板料原始孔径和翻后竖中径图 1),不能小于极限翻系数。目前,在冲压理论中,有关极限翻系数的理论探讨还很少[1,2 ,3] 。

Summarizing and analysing the stability of stratigraphy and the basic characteristics of geological hazard at the Three Gorges Reservoir,the authors put forward the dangerous slope mainly includes bedding slope,hard and soft rock alternation gentle slope,loose accumulative slop,karst breccia slop and layer cataclastic rock slop.The loose accumulative slopes from Fengjie to Badong are most dangerous and need to control.

在总结分析三峡水库区岩层稳定性及地质灾害基本特征的基础上,根据岩性和结构特征,提出三峡水库区存在较为严重失稳隐患的坡主要有顺层坡、平缓软硬岩层互层坡、松散堆积体坡、岩溶角砾岩坡和层状碎裂岩坡等5种类型,其中分布于奉节至巴东段的松散堆积体坡危险性最大,是需工程防护的重中之重。

If, on the role of epigene, would change his instantaneous and shapes and sizes, and when epigene stops, the paper will revert to the original shape and size, this kind of process is known as minyet elastic deformation; when paper was epigene at the time of a recurring interval between defending the changed his shape and size, epigene falls out of scope when you slow down and revert to the original shape and size, this kind of process is known as anelasticity; scrapped when epigene, paper or maintain in force the shape and size of deformation of the State, known as the plastic deformation.

如在辛的功用下,会瞬时不天保留自己的轮廓和尺寸,而当辛罢手时,纸张又会复兴到本来的轮廓和尺寸,这栽变形的功程称为敏不不不弹性变形;当纸张施到辛时在一按期捍间间隔保留了自己的轮廓和尺寸,辛罢手功用时则匆匆不天复兴到本来的轮廓和尺寸,这栽变形的功程称为滞不不不弹性变形;当辛裁撤之后,纸张还是保留在施辛功用时变不败的轮廓与尺寸变形的状况时,称为不不弹性变形。

Aiming at slope types, features, deformation traits and destroy mechanism of high steep valley slope at Jinping Ⅰ Hydropower Station, and applying monitoring results, a comprehensive prediction design is suggested. In the space, according to the occurrences of unfavorable geological phenomena such as faults F5, f(subscript 42-9) deep fracture SL(subscript 44-1) and lamprophyre vein X, all of them can be treated as the boundary conditions for slides, potential instable blocks of slope on the left abutment are estimated which take on a wedge-shaped sliding model. In the sametime, through using three kinds of joint prediction methods such as statistic models and nonlinear models, judging from the shape of curves of deformation-time and their deformation velocities, it is found that the slope is at the state of slowly creeping to uniform deforming with a deforming velocity of 0.05 mm/d.

针对锦屏一级水电站左岸高坡的坡类型、坡特征、变形特点和变形机制,在监测成果的基础上,对其进行综合预报,空间上判断左岸拱肩坡由断层F5,f(下标 42-9)、深部裂缝SL(下标 44-1)及煌斑岩脉X互相组合,形成可能坡失稳块体的界条件、楔型体滑移失稳模式:时间上采用统计模型及非线性模型多种方法联合预报,根据坡变形时序曲线的形态及变形速率指出:坡目前处在缓慢蠕动至匀速变形阶段,变形速率小于0.05mm/d。

For some rock slopes, which have not distinct failure surface, but have complicated structure or load on the top and so on, a stability analysis of this type slopes by finite element method is presented, the failure surface is defined by certain rule or strain zone from the computed model, and then the safety factor of the rock slope is abtained by finite element method and limit equilibrium methodAt last, using ANSYS , a famous commercial finite element analysis software, a example of high-steep slope which is bearing the load of the LongGe Mansion is presented, the stability of this slope is studied, as a paradign the the stability evalution of complicated high-steep slope under the action of load of building , the chapter gives some meritable reference in stability assessment of rock slopes using numerical simulation by three-dimension elastic-plastic finite element.

并用有限单元法建立坡的具体模型,应用折减坡岩体参数、逐级施加荷载等与坡工作环境相似的方法进行模拟计算,根据计算结果,采用一定的判别准则或图形可视化方法,确定出坡的滑裂面,再采用刚体极限平衡法或有限单元法计算其安全系数;最后,通过某一工程实例,用大型有限元程序对坡在建筑物荷载作用下的稳定性进行分析研究,并以此作为计算分析复杂高坡在高层建筑物作用下的稳定性评价的一个范例,在采用有限元弹塑性数值模拟岩质坡稳定性方面提供一些有价值的参考。

After analysizing the results of SSRFEM and centrifugal model test, someconclusions are drawn that, the depth of slip surface implies that the Bishopssimplied method cannot indicate the true failure mechanism for the slopes reinforcedwith piles. The rate of safety factors decreases with the pile spacing decreasing, andthe salty factor of the slopes is the largest when the reinforced piles are installed in themiddle of the slopes, regardless of pile head confining conditions, and the deflection,maximum bending moment and shear force in the reinforced piles in the criticalcollapse are the biggest meantime. The fixed and hinged head condition of the pilesresults in smaller bending moment in the piles than that in unrotated and free headcondition, therefore the restrained pile head condition is recommended in the design.

3不同特性与工况下抗滑桩与土体相互作用的数值分析与离心模型试验研究表明:采用简化Bishop法计算得到的滑动面不能反映抗滑桩加固坡的破坏机理,抗滑桩设置在坡中部和减小桩间距有利于提高坡稳定安全系数,而此时抗滑桩在坡临界破坏时的挠度、最大弯矩和最大剪力相对较大;桩头固定、铰接与桩头自由、平移相比,所加固坡的整体水平位移及坡临界破坏时抗滑桩的最大弯矩相对较小,而稳定安全系数则较大,因此在进行抗滑桩设计时应尽量选择桩头固定与铰接的型式,或对桩头进行锚固以改善抗滑桩的受力特性,提高坡的稳定安全性状。

Hongye Machinery Factory production of machinery and equipment are widely used in metal processing production: Qi mouth edge, flat crimping, both inside and outside vertical crimping, pressure Blankholder bones, stretch forming, anti-side, crossed, metal ring inside the edge volume, Hemming, sand at the end, both inside and outside the sanding, the appearance of Belt Line, both inside and outside the skin polished, red-shaped punching, vol cylindrical, straight seam welding, weld line pressure, girth welding, pressure ring weld, sheet metal coated oil, pressure spiral teeth, cars spiral teeth.

鸿业机械厂生产的机械设备广泛用于五金制品加工生产:齐口切、平面卷、垂直内外卷、压压骨、拉形、反、划线、金属圈卷内、包、砂底、内外砂光、外表砂带线、内外去皮抛光、冲形冲孔、卷圆筒、直缝焊、压直线焊缝、环缝焊、压环形焊缝、金属片涂油等、压螺旋牙、车螺旋牙。

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