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近年来,国内外普遍重视孔隙水压力的现场观测,探析其特性,並研究以实测孔隙水压力值控制施工速率、确保工程安全。我们在浙江省、镇海县、北仑港矿石堆场砂井地基的予压加固中,根据孔隙水压的特性,研究提出以孔隙水压的荷重比值,即B=(∑△u)/(∑△p),和孔隙水压的应力比,配合塑性变形区发展的分析来控制加荷速率。本文简要讨论斗轮堆取料机区,堆石予压砂井地基的孔隙水压力特性和加荷速率控制。
In recent years, attention has been paid to the on-site observation of pore water pressure at home and abroad, and its characteristics have been explored. It has also been studied to measure the rate of pore water pressure to control the construction rate and ensure the safety of the project. Based on the characteristics of pore water pressure, we have proposed a ratio of the load pressure to the pore water pressure, namely B=(∑△u)/(∑), in the pre-pressurization reinforcement of sand-drain foundations in the ore storage sites of Zhejiang Province, Zhenhai County, and Beilun Port. △ p), and the ratio of the pore pressure to the water pressure, with the development of the plastic deformation zone to control the loading rate. This paper briefly discusses the pore water pressure characteristics and loading rate control of the bucket wheel stacker-reclaimer area and rock-filled pre-press sand well foundation.