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Construction method of a large-diameter groundwater environment monitoring well

A technology for environmental monitoring and construction methods, applied in drilling equipment and methods, earth-moving drilling, drilling equipment, etc., can solve the problems of environmental interference, damage and loss in the well, achieve good environmental and economic benefits, prevent theft or The effect of being damaged, mitigating the requirements of the equipment

Active Publication Date: 2021-07-09
WUHAN SURVEYING GEOTECHN RES INST OF MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the wellheads of existing groundwater environment monitoring wells have no protective equipment, and the environment in the well is easily disturbed by external or artificial factors, which affects the monitoring accuracy of groundwater parameters in this area.
Moreover, some groundwater monitoring equipment is directly placed in the field without protective measures, and there will also be problems of loss or damage

Method used

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  • Construction method of a large-diameter groundwater environment monitoring well
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  • Construction method of a large-diameter groundwater environment monitoring well

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1: Aiming at the groundwater monitoring project of Sishui Town, Dexing City, Jiangxi Province, the landform is mainly hilly, and its stratum conditions are generally Quaternary phreatic aquifers, and its bedrock surface is buried relatively shallow. The drilling depth is determined according to the drilling purpose, so as to achieve the purpose of regional control and dynamic monitoring of the hydrogeological unit. For the Quaternary aquifer, the drilling depth should penetrate the Quaternary loose overburden and enter the bedrock 5 meters Above, the general hole depth is 20 meters. The inventor of the present application adopts the method in the present invention to construct a large-diameter groundwater environment monitoring well for this project. In this construction project, a general engineering survey drilling rig is used, such as the XY-1 type or XY-150 type high-speed 100-meter drilling rig. The drilling depth of the project is less than 100m, and th...

Embodiment 2

[0045] Example 2: For the groundwater monitoring project of the Fujiawu stope of Dexing Copper Mine in Jiangxi Province, it is located on the side slope of the stope. Except for a small amount of rock formations loosened by blasting on the sides, it is mainly complete phyllite and granodiorite porphyry formations. For bedrock monitoring wells, the regional geological data and hydraulic ring data should be analyzed first, and the region with developed fractures or bedrock fissure water runoff modulus should be selected for implementation. The drilling depth should generally enter the bedrock aquifer or into the A certain depth below the erosion base level, generally 100 meters can be selected. The inventor of the present application adopts the method in the present invention to construct a large-diameter groundwater environment monitoring well for this project. General geological exploration drilling rigs are used in this construction project, such as XY-4 type, XY-42 type and X...

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Abstract

The invention provides a construction method of a large-diameter groundwater environment monitoring well. The construction method specifically includes monitoring well drilling and coring, multi-stage reaming construction, core collection and arrangement, well pipe installation, well washing, pumping test, and installation of wellhead protection devices. The invention can complete the construction process by adopting conventional engineering survey drilling rigs and ordinary core drilling rigs, which is simple in construction, greatly saves costs, and can achieve good environmental and economic benefits. The borehole wall of the large-caliber monitoring well and the surrounding underground aquifers are prone to produce more Strong hydraulic connection, the well wall is filled with filter material, and pumping test and well cleaning can be carried out, so that the hydraulic connection between groundwater and the well is strengthened, and the construction method integration that can dynamically reflect the real-time situation of the groundwater environment.

Description

technical field [0001] The invention relates to the field of environmental protection monitoring in the construction of groundwater environment monitoring stations, in particular to a construction method of a large-diameter groundwater environment monitoring well. Background technique [0002] With the development of our country's social economy, the environmental problems of groundwater have become increasingly prominent, and groundwater in some areas has been seriously polluted. It is becoming more and more important to scientifically and accurately investigate, evaluate and treat polluted groundwater. At present, the main method of groundwater pollution investigation and water quality monitoring is to take samples from groundwater monitoring wells for testing, so groundwater environment monitoring wells are water quality monitoring facilities set up to accurately grasp the environmental quality of groundwater and the dynamic distribution of pollutants in groundwater bodie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/00E21B25/00E21B17/00E21B43/04E21B43/10G01N1/04
CPCE21B7/00E21B17/00E21B25/00E21B43/04E21B43/10G01N1/04
Inventor 刘术湘岳进松李东升曹小宇谢震王虎
Owner WUHAN SURVEYING GEOTECHN RES INST OF MCC
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