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In order to better improve the engineering design and construction , improve project quality, reduce the construction difficulty , technically reduce engineering costs , to carry out the low vacuum preloading method applied research . This paper describes the low vacuum preloading method in the design and construction on a number of problems and solutions , through specific projects reinforcing effect of the technology was validated analysis . Before the formal construction works of small, short-term reinforcement experiments , the nature and treatment of unconsolidated formations to study the consolidation process , the experimental results to be the inverse of the reinforced soil consolidation parameters, thereby correcting for reinforcement design can effectively ensure the reinforcement effect , while maintaining important structural seal - seal coat of mud consolidation process to study the nature and to ensure that the process of strengthening the mud vacuum seal coat sealing, reinforcement of the project during the evacuation can proceed smoothly ; right water and gas separation technology research and development , the development of vacuum pumping drainage automation control system using microcontroller core , program control eliminates the vacuum fluctuations on the surface of the water sump float switch , making the control cabinet is sensitive , accurate , saving manpower ; optional water level simple and reasonable structure , rugged, reliable performance, easy to install, easy to adjust the scene ; selection of one-way check valve solenoid valve plus a combination of both to ensure the vacuum pump and submersible pump work, and ensure that there are no gas intrusion phenomenon, to ensure the vacuum system vacuum ; choose SKA5111 alternative type water ring vacuum pump used in the past W-3 -type reciprocating pumps , the ultimate vacuum and exhaust and W-3 -type vacuum pump rather , but its transportation, installation and maintenance convenience, ease of use , economy and environmental protection and other aspects compared to W-3 -type vacuum pump has been greatly improved ; empirical observation method using monitoring data analysis quick and easy , you can effectively guide construction.
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