Ground subsidence control constructing method

Abstract

The invention relates to a ground subsidence control constructing method. The method comprises the following steps of detecting the geohydrologic engineering geological condition of a subsidence area of the ground to be constructed; according to a log-log method, determining yield stress of each ground layer of the subsidence area of the ground to be constructed and a critical water level corresponding to the yield stress; arranging a plurality of monitoring networks in the subsidence area of the ground to be constructed to monitor the water levels; adjusting the exploitation and recharge of the underground fluid according to the monitored water levels. The invention determines the structural characteristic of the ground layer according to the geological investigation method, controls the water levels not to be reduced below the critical water level, and then controls the exploitation amount of the underground fluid and timely adjusts the time of exploitation and recharge, so the ground subsidence is effectively controlled.

Description

technical field [0001] The invention relates to a method in the technical field of building construction, in particular to a construction method for controlling ground subsidence during mining of underground fluid in structured strata. Background technique [0002] Land subsidence is a large-scale geological disaster caused by changing the stress state in the formation due to natural or man-made reasons such as earthquakes and the exploitation of underground fluid resources. Land subsidence may cause hazards such as ground subsidence, uneven roads, breakage of underground pipes, uneven settlement of buildings, backflow of seawater, etc. Therefore, measures must be taken to control land subsidence. At present, domestic and foreign technical measures to control land subsidence caused by underground fluid mining mainly include: reducing mining volume, increasing recharge volume, and adjusting mining levels. Although these measures have played a role in alleviating land subside...

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Problems solved by technology

[0004] After searching the existing technical literature, it was found that Shen Shuilong et al. provided a method for determining the exploitable amount of groundwater according to the annual land subsidence and water pumping (ZL200510110425.9). The method determined the annual land subsidence and the annual underground fluid extraction. Combining the relationship between the void ratio change and the consolidation pressure in the soil consolidation test, a method to control the annual groundwater extraction is proposed, but this method needs to collect a large amount of measured data, if there is no more than decades The measured data of ground subsidence and mining volume cannot be predicted at all, so the applicability is poor in subsidence areas that lack measured data

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