Abstract:Combination support technology by anchorage and concrete is a new technique used to maintain the stabilization of slope earth in tunnel excavation or excavation of structures′ deep foundation.The technique is rarely used in construct of hydraulic engineering.In Jiangdu′s two pumping stations,the technique is used in the project of wing wall for clearing dangerous illness and strengthening.Compared with earth-retaining wall program,combination support technology has many merits,such as shorter construct time,smaller earth volume,lower fabrication cost and more convenient construct.The project invest is two thirds of that of the earth-retaining wall program.In the projects,the earth behind the wing wall is replaced with cinder to reduce the load,the pervious hose tubes are buried to reduce the water level behind the wing wall,and the excavated section towards the road is supported by anchorage.Many methods are used in designing the combination support,such as increasing the size of injected hole,gravity injecting,increasing the diameter of the main bar,increasing the anchoring depth,increasing the quantity and the diameter of the bar,reducing the anchoring separation,and so on.
汤正军. 喷锚支护技术在泵站改造中的应用[J]. 排灌机械工程学报, 2007, 25(4): 34-37.
TANG Zheng-jun. Application of combination support technique by anchorage and concrete in renovation of pumping station. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 34-37.