Then decide whether to reinforce according to the stability analysis results. There are many methods for slope stability analysis. At present, the traditional limit equilibrium method is widely used in engineering.
In recent years, various numerical analysis and calculation methods based on different mechanical models have been paid more and more attention by engineering circles.
Generally speaking, different slope types, different analysis purposes and available basic data should adopt corresponding calculation theory and stability analysis method.
Because the slope is inclined, under the action of gravity and other external forces, the whole slope tends to slide from high to low. At the same time, because the slope soil (rock) itself has certain strength and artificial engineering measures, it will produce resistance to prevent the slope from slipping. Generally speaking, if the sliding force on a certain surface inside the slope soil (rock) exceeds the anti-sliding ability of the soil (rock), the slope will slide, that is, lose its stability; If the sliding force is less than the resistance, the slope is considered to be stable.
In engineering construction, there are two common types of slope sliding. One is the landslide of natural slope due to the change of original geological conditions, and the stability of natural slope is usually measured by the comparison of geological conditions; The other is an artificial slope formed by manual excavation or filling due to the needs of engineering construction. Because the design slope is generally steep, or the internal stress state of the slope changes due to the change of working conditions, the local shear failure develops into a coherent shear failure surface, which destroys the stable equilibrium state of the slope and leads to landslides.
Question 2: When you say excavation high slope, you mean excavation high slope, usually it means excavation high slope, as opposed to filling high slope.
Question 3: The introduction of high slope means that the height of soil slope is more than 20m and less than 100m or that of rock slope is more than 30m and less than 100m.
Question 4: What is high slope subgrade? High-slope subgrade refers to the subgrade with a slope earthwork excavation height of ≥20m.
Question 5: the difference between high slope and deep foundation pit, and the knowledge of the difference between high slope and deep foundation pit. The Three Gorges Project is an innovative project. The Three Gorges Project has attracted worldwide attention with its magnificent momentum of "High Gorge Out of Pinghu", which not only ranks first in the world in terms of total project volume and installed capacity, but also is the hydropower project with the highest technical level in the world today. The Three Gorges Project was built in 13, creating a spectacular spectacle in the history of human civilization. The construction of the Three Gorges Project needs the comprehensive integration of many disciplines. The process of multidisciplinary integration is an innovative process. The construction of the Three Gorges Project involves many disciplines and professional fields such as hydraulics, architecture, sediment, shipping, hydrology, meteorology, geology, materials, metal structures, electromechanical equipment, ecology, environment, information and so on. In addition to the scientific and technological personnel directly involved in the design, owner, construction and supervision units of the project construction, in the 50 years since the founding of New China, especially in the last 20 years, tens of thousands of scientific and technological personnel have devoted themselves to the scientific and technological work of the Three Gorges Project and submitted nearly 10,000 scientific and technological achievements reports. At the same time, in view of major technical problems, we should gather the essence of national science and technology, give full play to the role of experts, tackle key scientific and technological problems, learn from foreign advanced experience and make scientific decisions. These scientific and technological achievements have laid a foundation for scientific decision-making on major issues such as the construction of the Three Gorges Project and the operation of the hub, and played an important role in optimizing design, improving construction technology, ensuring project quality, saving project investment and promoting modern management. The Three Gorges Project is a concentrated expression of the independent innovation ability of the Chinese nation. Faced with a series of world-class problems, all the Three Gorges builders who participated in the construction of the Three Gorges Project always put scientific and technological innovation through the whole process of the project construction. Except for the unit and a few construction equipment imported from abroad, the rest of the equipment, materials, design and construction are all completed by China's own team. Through the construction of the Three Gorges Project, the Three Gorges Project has made a series of significant achievements in integrated innovation (rapid construction of dam concrete, double-line continuous five-level shiplock project, diversion and closure project, cofferdam project), introduction of digestion and absorption innovation (taking the Three Gorges Project as the carrier to promote the localization of large-scale electromechanical equipment), original innovation (evaporative cooling technology for generators independently developed by China), and formed the "Three Gorges Brand" technology with independent intellectual property rights. At the same time, through the organization and construction of the project, a set of super-large hydropower project construction management mode has been formed, which effectively controls the quality, progress and investment, and realizes the three major goals of the Three Gorges Project, namely, water storage, navigation and power generation on schedule. During the construction of the Three Gorges Project, a series of major scientific and technological problems have been successfully studied and solved, and many achievements have reached the world's leading level, thus embarking on a road of independent innovation with the characteristics of the Three Gorges. By the end of 2005, the scientific and technological achievements of the Three Gorges Project had won 14 national scientific and technological awards, more than 200 provincial and ministerial scientific and technological progress awards, hundreds of patents, and more than 100 in the world. These research results have not only been fully applied in the construction of the Three Gorges Project and achieved great social and economic benefits, but also many technologies have been applied and popularized in large-scale hydropower projects at home and abroad. Major innovations of the Three Gorges Project. The dam concrete pouring concrete of the Three Gorges Project is huge, totaling 28 million cubic meters, of which the dam concrete is 6,543,806,000 cubic meters, and the peak construction intensity needs to pour more than 5 million cubic meters of concrete in 6,543,800 years. How to realize the high quality of concrete pouring in the construction of high-strength concrete, ensure the quality of the Three Gorges Project on schedule, and even play its huge comprehensive benefits in advance has always been the core issue in the design, construction and project management of the Three Gorges Project. To this end, the Three Gorges Corporation organized all parties involved in the construction and scientific research units to comprehensively tackle key problems from the aspects of concrete raw materials and mix proportion, concrete pouring scheme and supporting technology, temperature control and crack prevention of mass concrete, and adopted a series of latest technologies, integrated innovation and achieved remarkable results. New concrete raw materials and mix proportion: In order to make full use of the granite bedrock excavated by the project itself, the Three Gorges Project took the lead in using crushed granite as the artificial aggregate of concrete in China, and used Grade I fly ash with excellent performance as the concrete admixture for the first time, and invested millions of yuan to study the mix proportion of concrete, including further improving the high-performance admixture, so that the comprehensive performance of concrete reached the optimal level. After parallel testing by several authoritative research institutions and the testing center of the head office, the optimized water consumption per unit of mass concrete mixture ratio is only about 90kg/ m3, reaching the world advanced level. Revolutionary concrete pouring scheme: concrete pouring scheme and supporting technology are the key to dam concrete construction. After many investigations and in-depth argumentation at home and abroad, Three Gorges Corporation decided to introduce the most advanced special equipment for dam pouring abroad-tower belt machine, and determined the concrete pouring scheme with tower belt machine as the main body. The characteristic of this scheme is that it is mixed >>
Question 6: What does the high slope of deep foundation pit with high retaining wall mean in highway engineering? For high retaining walls, the foundation design must be deep, so it is called deep foundation pit; Because the retaining wall is relatively high, of course, the slope is also very large, so it is called high slope.
This situation generally occurs in embankment retaining walls and cutting retaining walls.