Construction method for utilizing underground continuous walls as exploration trunks

Abstract

The invention discloses a construction method for utilizing underground continuous walls as exploration trunks. The method comprises field engineering and auxiliary facility construction and the following steps of (1) underground continuous wall construction; (2) grouting construction; (3) downhole excavation support; (4) wellhead water interception and well bottom water discharging; and (5) exploration test. The construction method is suitable for the exploration under the geological conditions of deep coatings and / or geological conditions of large depth and multiple bottom layers, and is capable of avoiding the deep sand layer sampling from disturbance, increasing the sampling quantity and ensuring the ideal exploration test conditions.

Description

technical field [0001] The invention relates to the technical field of exploration and construction, in particular to a construction method using an underground diaphragm wall as an exploration well. Background technique [0002] In the prior art, the underground diaphragm wall is often used in construction, and its main function is to stabilize the base. The main structure is concrete and steel bars, and the underground diaphragm wall usually adopts a rectangular structure. When it works, it can offset the force of the building and reduce the damage to the base. Due to the damp and dark environment of the building underground, groundwater seepage problems often occur. If it cannot be solved in time, the basement materials will gradually fall off when they are damp, causing a larger area of ​​materials to be damp. The underground continuous wall strengthens the base and can be better. solve the above problems. [0003] For the geological exploration of deep overburden, in ...

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Problems solved by technology

[0005] What the present invention is to solve is that for the geological conditions of deep overburden and / or the geological conditions of large depth and multiple bottom layers, the existing drilling and exploration methods will cause great disturbance to the sampling of deep sand layers, a small number of samples and unsatisfactory field test conditions. Technical problem, the purpose is to provide a method suitable for exploration under the geological conditions of deep overburden and / or large depth and multiple bottom layers, which can avoid the disturbance of sampling deep sand layers, increase the number of samples, and ensure an ideal exploration test. Conditional Utilization of Underground Diaphragm Wall as a Construction Method for Exploration Wells

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