Recognition method of water containing layer and water resisting layer in hydrogeology

An identification method, a hydrogeological technology, applied in geophysical surveys, instruments, etc., to achieve the effect of fast drilling, time and cost savings

Inactive Publication Date: 2018-06-22
INST OF KARST GEOLOGY CAGS
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  • Abstract
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[0006] In view of this, the object of the present invention is to provide a method for identifying aquifers and aquitards in hydr

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  • Recognition method of water containing layer and water resisting layer in hydrogeology
  • Recognition method of water containing layer and water resisting layer in hydrogeology
  • Recognition method of water containing layer and water resisting layer in hydrogeology

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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0030] The following will describe in detail a method for identifying aquifer and aquifer in hydrogeology provided by the present invention.

[0031] See figure 1 , Is a flowchart of a method for identifying aquifer and aquifer in hydrogeology in an embodiment of the present invention.

[0032] In this embodiment, the method for identifying aquifers and aquifers in hydrogeology is to determine the location of groundwater aquifers by online monitoring of the water flow rate and water chemical index changes of the DTH hammer during hydrogeological drilling. And thickness, it can quickly and accura...

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Abstract

The invention provides a recognition method of a water containing layer and a water resisting layer in hydrogeology. The recognition method includes: excavating a water channel around a drilled hole before drilling, and mounting a triangular weir and an online monitoring instrument to monitor changing of water quantity and conductivity in the construction process of an air down-the-hole hammer; utilizing an air down-the-hole hammer drilling rig to drill a preset site, and selecting a proper air compressor; excavating a headrace channel between space around the drilling rig and the water channel, and paving impermeable thin films around the drilling rig and in the headrace channel and an observation water channel; timely cleaning rock debris in the water channel in the process of drilling;recording drilling depth and drill stem adding time in real time during drilling; calculating flow at different times according to data recorded by the monitoring instrument after drilling is finished; drawing a water quantity flow change curve and a conductivity change curve at different drilling depths according to calculating results; recognizing the water containing layer and the water resisting layer according to the water quantity flow change curve and the conductivity change curve. By the recognition method, the water containing layer and the water resisting layer can be differentiatedquickly and accurately.

Description

technical field [0001] The invention relates to the field of hydrogeology, in particular to a method for identifying an aquifer and an aquifer in hydrogeology. Background technique [0002] Aquifers and aquitards are important contents of hydrogeological research. Traditional methods generally distinguish aquifers and aquifers based on lithological characteristics. For example, carbonate rocks developed in karst are considered common aquifers, but in karst Exploration tests in the area have found that many wells with karst development below the groundwater level cannot be completed due to the extremely small water volume. The lithology of the same drilling is basically the same from top to bottom, but the permeability at different depths is also inconsistent. layers and aquitards are not exact. [0003] In the process of traditional hydrogeological drilling, the judgment of the aquifer and water-resisting layer of the borehole is mainly based on the comprehensive analysis o...

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 潘晓东彭聪焦友军任坤曾洁
Owner INST OF KARST GEOLOGY CAGS
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