Supporting Design And Stability Analysis Of A Slope At The Jing Gang Mountains

With the development of China’s economic construction, a large number of towns, buildings, highways, mines, railways are constructed. Many artificial slopes appear because of excavation and filling in the process of building, which bring a series of geological disaster problems about slopes and landslides, like collapse, crumble, slump dump and debris flows and so on. If the problems can not be controlled promptly and effectively, it will bring about great loss of life and property, and it may also increase the engineering cost, delay the time of project etc. The issue of slope disaster prevention has been a widespread concern.Based on a slope engineering of jinggang monutains, this project aims to make relatively systematically research on the geotechnical problems in the project through theoretical research, numerical analysis, design calculation, construction process and the key technique of construction methods, the specific contents of the work are as follows:(1) The project is based on the slope engineering of jinggang monutains, the field reconnaissance about hydrogeological conditions and engineering geological conditions, the statistics of the distribution conditions and rose diagram of the rock mass’s joints and fissures, what’s more, the studies of the distribution, cause, countermeasure of radioactive-polluted area’s cracks, these are all bring the engineering analysis and evaluation of geotechnical.(2) On the basis of predecessors, the paper is a combination of the engineering’s complex geologic status and the corresponding standard requirement, aiming at the various geotechnical problems meeting in the engineering, and then it adopts mini steel-tube pile, bolt, antislide pile strengthen technology to support. Above all, this paper studies the corresponding reinforcement technology’s design, calculation systematically and formulates corresponding complete construction technology.(3) In order to analyze the effectiveness of reinforced crack by using mini-steel pipe pile under different working conditions, large-scale geotechnical finite element software called ABAQUS is used to simulate the working conditions. After analyzing the result obtained through the numerical simulation of ABAQUS, it is found that the stability safety factor of non-reinforced slope is lower and the reinfoced one is higher. This indicates that the reinforcement scheme is technically feasible and available to the similar projects.(4) According to the result of the Slope stability analysis through checking the sheet pile retaining walls by using lizheng geotechnical under two different working conditions of landslide thrust and Coulomb earth pressure respectively, it is known that, the internal force distribution diagram agrees well with eacher other. It is also found that bending moment maximum value appears under the embeded solid segment, shear maximum value occurs at the sliding surface and displacement maximum value is in the top of the pile. The retaining wall is in safe under both different working conditions. This indicates the plate support is feasible and the reference value is significant to the project.