Small-caliber shallow groundwater nested monitoring well and well building method thereof

Abstract

The invention discloses a small-caliber shallow groundwater nested monitoring well and a well building method thereof. The monitoring well comprises an outer pipe and monitoring well pipes, wherein aplurality of monitoring well pipes are correspondingly arranged according to the number of detected sectional aquifers, and the plurality of monitoring well pipes are respectively inserted into an inner cavity of the outer pipe. The well building method comprises the steps of (1) surveying for drilling exploration; (2) drilling; (3) injecting clear water for mud displacement; (4) arranging an outer pipe centering guide; (5) filling; (6) washing the well; (7) putting the monitoring well pipes; (8) putting the monitoring well pipe I; (9) filling; (10) putting the monitoring well pipe II; (11) filling; (12) putting the monitoring well pipe III; (13) fixing the monitoring well pipes; (14) finishing the putting of the monitoring well pipes; (15) washing the well; (16) measuring the water level;and (17) installing a protective cover. The small-caliber shallow groundwater nested monitoring well has the beneficial effects that the construction cost is reduced, and the construction blank of the shallow groundwater nested monitoring well is filled.

Description

technical field [0001] The invention relates to a nest-type monitoring well and a well-forming method, in particular to a small-diameter shallow groundwater nest-type monitoring well and a well-forming method. Background technique [0002] At present, as people pay more and more attention to the environment, the monitoring of pollution sources needs to be more and more refined, and we need to be able to timely and accurately understand the degree of pollution. At present, the existing monitoring wells mainly monitor relatively large aquifers, and it is difficult to effectively monitor the groundwater with thin aquifers and relatively dense aquifers. At present, the continuous multi-channel monitoring well can only monitor seven layers at most, but the diameter of the monitoring well pipe is small, and subsequent water intake is more difficult. SUMMARY OF THE INVENTION [0003] The main purpose of the present invention is to solve the key technical problems such as the dif...

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Problems solved by technology

[0003] The main purpose of the present invention is to solve the key technical problems such as the difficulty in determining the minimum thickness of the water-stop layer of the traditional nest-type monitoring well, the poor water-stop effect between the monitoring pipes, and the difficulty in lowering the pipes;

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