Construction method for keeping slope stability of soft clay foundation pit based on interception and drainage

Abstract

The invention discloses a construction method for maintaining the stability of the soft clay foundation pit side slope based on intercepting drainage, comprising steps: 1. Excavating underground water intercepting ditch and ground water intercepting ditch: excavating underground water intercepting on the foundation pit side slope ditch, and excavate the ground intercepting ditch on the side slope; 2. Observation of the seepage situation in the underground intercepting ditch: observe the seepage status in the underground intercepting ditch, and judge whether it is necessary to repair the water seepage according to the observed seepage situation Adjust the structure of the underground water intercepting ditch; 3. Observation of the actual water level of the groundwater: observe the actual water level of the groundwater through the excavation pit formed in advance in the construction area where the foundation pit is located, and judge whether it is necessary to intercept the underground water according to the observation results. Adjust the structure of the ditch; 4. Adjust the structure of the underground intercepting ditch; 5. Backfill the underground intercepting ditch. The method of the invention has the advantages of simple steps, reasonable design, convenient construction, good application effect, simple, fast and effective control of the stability of the soft clay foundation pit side slope on slope land, and low input cost.

Description

technical field [0001] The invention belongs to the technical field of foundation pit construction, and in particular relates to a construction method for maintaining the stability of soft clay foundation pit slopes on sloping land based on intercepting drainage. Background technique [0002] In order to make full use of land resources, a large number of buildings (structures) that are used as supporting structures on the ground are transferred underground. Under the premise of controlling the construction period and the total project investment, the geological conditions and natural conditions of the site are often underestimated in the early stage, especially when both are extremely complicated, which brings great difficulties to the foundation pit construction. For example, when constructing a group project located in a mountainous area, the group project consists of a multi-storey frame office building and several four-story brick-concrete residential buildings with a ba...

AI Technical Summary

Problems solved by technology

Nowadays, when performing stability control on soft clay foundation pit slopes on slopes (that is, soft clay foundation pit slopes located on slopes), traditional control schemes of well point dewatering and pile row support are usually used, but the above-mentioned traditional control The scheme has problems such as complex construction process, long construction period, high input cost, and poor slope stability control effect

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