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Study On The Stablity Of The High Feel

Posted on:2012-02-03Degree:MasterType:Thesis
Country:ChinaCandidate:K MaFull Text:PDF
GTID:2132330335463093Subject:Geological Engineering
Abstract/Summary:PDF Full Text Request
In this paper, Zhenjiang City, Mountain Landscape Mountain Sports Center project west of the egg, for example, in the investigation and on the basis of experimental data on soft soil slope stability of high bulldozers were studied. Research including:1.Through the fill slope stability of the sensitivity analysis of the factors, mainly from the filling cohesion, internal friction angle and the horizontal seismic coefficient and the filling height of the sensitivity analysis, the internal friction angle greater impact on slope stability, cohesion C sensitivity of 0.1, has some influence on slope stability; slope of the high sensitivity of 1.1, have a major impact on slope stability, slope shape of the high slope design considerations need to focus on2.The finite element results show that under the conditions of rainfall infiltration, with the duration of rainfall, groundwater level gradually rising groundwater flow mainly in the non-stability of soil-based vertical infiltration, rainfall infiltration, the west side of the rock foundation The strongly weathered diorite is also located below the water table, dry state of the rock mass, high strength, easy to soften water, the soil may be a potential slip surface of slope instability, attention should be paid.3. Due to a wide range of soft soil layer, through the adjustment of slope shape, slope stability will improve, but the potential sliding surface through the soft soil, indicating that the soft soil a greater impact on slope stability, slope shape adjustment still not satisfied after the slope of the security requirements. Plus 6% of the bulldozers used for modification of quicklime, the slope stability to meet the security requirements, the level of deformation is small, the purpose of long-term stability can be achieved.Bulldozers after the addition of piles at 38m elevation can reduce the slope of the level of a high degree of deformation, but also to ensure the physical stability of the foundation and bulldozers.Reinforcement is greater than the stability of piles to adjust and fill slope shape modification program.4. Due to the lower bearing capacity, the existing program under the conditions of the heap mountains, close to the limit state bearing capacity should be considered the foundation for proper reinforcement. Layerwise summation method and numerical analysis results show that the slope after the completion of the final settlement will reach 67cm or so. The foundation construction process, a sharp increase in ground water pore pressure, slow the process of pore pressure to close the case, the proposed construction of speed can not be too quick bulldozer, bulldozers duration of at least 1 year.5.The stability analysis can be used as the basis for engineering design heap mountains.
Keywords/Search Tags:Fill slope, Stability analysis, Numerical analysis, Sensitivity analysis, bearing capacity of foundation soil, settlement
PDF Full Text Request
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