| Backfill for high fill the airport, the airport in the airport after the airport four or five blocks of embankment slope deformation of soil surface area and channel slot area cracks,on the basis of monitoring data provided by the monitoring unit, deformation is stable, the region of convergence trend is not obvious. 4, 5 blocks and the deformation of slope is possible for upper slope embankment area and above the runway area stability implications,which threat the slope overall stability, further affect channel slot safety threat to aircraft.The purpose of this project is to find out the cause of deformation formation of the slope and to provide basis for dealing with the deformation of this area.The fill body deformation range is bounded to the runway surface crack, as far as leading edge according to the early stage of the deformation monitoring data shows mainly in the upper slope back pressure platform, on both sides of the deformation is not obvious,no obvious lateral shear fracture, slope approximation in general in the plane round-backed armchair (cirque) distribution. Deformation range mainly include the overall slope of about 200 m long, 400 m wide, the average thickness of about 25 m, slope surface from high to low is on the steep slope form under slow the shape of profile on a mansard terrain.The slope on April 14, 2012, began filling, filling in December 2012 to 1952 m elevation of 1964 m (design), when the back pressure side slope platform inside the larger displacement, the inside of the platform, the drain damage is more, after increasing wide on the outside of back pressure platform 25 m and 30 m thick soil layer platform, upper back pressure platform increase 20 m thick soil layer to carry on the back pressure, back pressure processing in mid-april 2013 for top again after filling, filling to the design elevation at the end of May 2013, the late filling height of about 12 m. After the anti-pressure treatment, the slope surface deformation obviously converges, the deformation zone is gentle, and the addition of the anti-pressure platform plays a good press.Through exploration and deep displacement monitoring and ground displacement monitoring data of the slope deformation emergency, put forward to the high embankment deformation slope anti slide pile and take additional measures are proposed by the anti pressure platform, anti slide piles and soil pressure control, slope deformation has been checked, in the steady state. In this paper, the development characteristics, the influencing factors and the mechanism of the high fill deformation slope are analyzed, and the stability of the deformation slope is calculated quantitatively. |
