Method for preventing sand and soil loss around dewatering well in water-rich sandy soil area: Fid-Bau Portal

Method for preventing sand and soil loss around dewatering well in water-rich sandy soil area

LI YANCHUN / ZHANG XUNLAI

The invention discloses a sand and soil loss prevention method for the periphery of a dewatering well in a water-rich sandy soil area, and relates to the technical field of deep foundation pit engineering in the water-rich sandy soil area. The sand soil loss prevention method for the periphery of the dewatering wells in the water-rich sandy soil area comprises the following specific operation steps that S1, high-density concrete water filtering pipes are machined and manufactured in batches, and the number of the dewatering wells is calculated and properly increased according to the water filtering rate; and S2, according to the number of the dewatering wells, a first section of high-density concrete water filter pipe is machined, that is, a 5 mm end socket iron plate is installed below the high-density concrete water filter pipe. According to the method for preventing sandy soil loss around the dewatering well in the water-rich sandy soil area, potential safety hazards caused by sandy soil loss during dewatering can be eliminated at a time, it is guaranteed that no water is accumulated on the foundation, the slope of the foundation pit is stable, and safety accidents caused by collapse of the slope of the foundation pit due to sandy soil loss are avoided; therefore, the whole building system engineering is safe and free of accidents.

本发明公开了一种富水沙土区降水井周边防沙土流失方法，涉及富水沙土区深基坑工程技术领域。该富水沙土区降水井周边防沙土流失方法，具体操作如下：S1、批量加工制作高密度混凝土滤水管，根据滤水率计算并适当增加降水井数量；S2、依据降水井数量，加工第一节高密度混凝土滤水管，即在高密度混凝土滤水管下方安装5㎜封头铁板。该富水沙土区降水井周边防沙土流失方法，能一次性消除因降水时造成的沙质土流失而带来的安全隐患，确保基础无积水、基坑边坡的稳固，杜绝因沙质土的流失而造成基坑边坡坍塌造成安全事故的发生，从而实现整个建筑系统工程安全无事故目标。

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