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Accordance with the requirements of administrative areas of Beijing 's policy of limiting construction precipitation Building project for Laitai pit depth , high water table , water features , technology comparison and optimization of the excavation waterproof curtain to determine the use of innovative stir jet pile sealing the curtain construction of technological processes . Actual research group project during the construction process perfected the process of supporting and waterproofing measures in exceptional circumstances ; research piles stir spray sealing curtain design and construction issues , and conduct the necessary tests ; explore stirred spray pile sealing the cost and quality of the curtain , the pilot project and the technical and economic analysis , and efforts to control the project cost . The technology combines Churning Pile the continuous dense advantage of a jet of high-pressure grouting effects and mixing pile , Sealing Curtain pile body pit slope protection pile full bite , stable quality , low-cost single pile , and does not produce a large number of construction waste slurry, to reduce cement waste and environmental pollution . The engineering stir spray pile sealing curtain to avoid the jet grouting piles or separate pile stirring continuously set to form the curtain waste , plus solid high strength reinforcement uniform quality , plus solid shape controllable , lower costs and better the cutoff wall construction is one of the more advanced the scientific construction technology , has become the foundation treatment methods are promoting domestic multi-purpose , efficient , but also the current and reliable technology . The project to ensure the achievement of the goals of the schedule, quality , safety , and in line with the national green , environmental protection , energy saving ideas , and achieved good economic and social benefits .
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