Christian Louboutin Greece vyt oet ijbv ors

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Soft comprehensive highway

Management may directly affect the stability of the embankment to reduce groundwater table 3.2: There are many ways dewatering species, such as hand-placed gravel blind ditch, reinforced concrete pipe blind, treatment of concrete underground pipe network and so on. This paper introduces a bridge in the province's engineering practice, has been successfully used polyethylene plastic perforated corrugated pipe drainage system. The scientific, safe and efficient drainage system. Can effectively collect groundwater, lowering the water level, drain away excess water, grass-roots level, so that spring water, subsurface and other smooth excluded. This pipe is extremely flexible and can adapt to different working environment,[link widoczny dla zalogowanych], install faster than traditional materials, and can speed up the construction speed, improve project quality and savings. It has been observed in the cross section of 8 × bellows lOcm drainage system, a displacement of up to 0.15m / S or so. Polyethylene corrugated tube construction method is as follows: 24cm with a clean break (gravel) Stone BEDDING 25cm, and then placed in polyethylene bellows macadam base, in the bellows around, the same basic material filling in the tube on top of the Department of then covered with a layer of 2-4cm in diameter was broken (gravel) stone, the thickness of l0-20cm, and made possible the form of sand and gravel filter layer. Bellows must be straight slope, slope at 7% o can be. 3.3 alluvial silt deposition Treatment: reduce groundwater completely remove silt, gravel or coarse gravel replacement, stratified dam compaction. If the subgrade soil water content of a large, soft soil Quito, construction of which lower the groundwater in the same time slot on the excavation of the road for a short period of drying, the thickness range to be road tank 030cm base strength of the soil and the best stable with the initial water after the initial pressure with the roller. Hydrostatic pressure must be the beginning, to be a certain degree of compaction required, and then filling water content of not more than l0% of the coarse soil, stratified rolling. So as to ensure strength and stability of roadbed in the short term to strengthen and improve. When there is a large area of the spring of (rubber-like) soft soil base, the depth is between the 1.01.6cm can remove some of its mining, gravel placed by hand, in (O.50-1.00m) depth range for replacement. This approach was effective in a short time to control the phenomenon of soil-based rubber. When the subgrade soil is wetland classes in the loess soil, even poor subgrade soils when the road in the groove of the original undisturbed soil layer based on the Xianpu gravel or coarse grained soil, and then use roller static pressure, static pressure to be completed, the original soil Kida to a certain density, and then filling the upper coarse soil. 3.4 The construction technology in the process of soft soil compaction, shall not destroy the original soil structure. Compaction with roller preliminary static pressure, static pressure after the drying period of time,[link widoczny dla zalogowanych], further static pressure, to be stable, and has a certain intensity, then the vibration compaction. After the basic stability of the soil based on the planned use of vibratory compaction, until the best it can, and then filling coarse soil, coarse layered soil compaction, the surface layer of the dynamic pressure should take a static pressure method. 4. After the implementation of the above measures. Shall take the necessary measures to consolidate: 4.1 After lots of governance, on a regular basis to observe, on the outlet, the flow of water intake were measured regularly and testing. 4.2 Regular sampling by drilling core samples from observation. 4.3 pairs of soft soil section after the treatment,[link widoczny dla zalogowanych], regular observation and routine test instruments. 4.4 strengthen the conservation and management,[link widoczny dla zalogowanych], regular checks of underground drainage pipes, dredge and maintain underground water flow. In summary,[link widoczny dla zalogowanych], through the implementation of the above technical measures can reduce the water table, the depth of the roadbed in a certain range to maintain optimum moisture content or dry state, thereby ensuring the strength of subgrade bearing stratum. Through the integrated treatment of soft ground, embankment can be achieved within a short period of time, stability, and elimination of subgrade settlement, boiling phenomena, in order to ensure project quality.