Method for determining permeability coefficient of loose confined aquifer based on coal mine geological drilling

A technology for confined aquifers and permeability coefficients, applied in permeability/surface area analysis, suspension and porous material analysis, measurement devices, etc., can solve the problem of limited drilling, which cannot reflect the variation law of permeability coefficient and its regional effects, etc. problem, to achieve the effect of accurate permeability coefficient

Pending Publication Date: 2021-07-13
HEFEI UNIV OF TECH
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of manpower, material and financial resources, the boreholes that can be used for pumping tests are limited, and the permeability coefficient obtained from the test cannot reflect the change law of the actual permeability coefficient of the loose confined aquifer in the study area and its regional effects.
Moreover, existing studies have shown that the permeability coefficient is an essential parameter for analyzing the anisotropy of loose aquifers. If the permeability coefficient of the entire aquifer in the study area is treated as a constant value, it will inevitably cause large errors. Therefore, based on the existing coal mine geology It is of great engineering application value to propose a method for determining the permeability coefficient suitable for unconsolidated confined aquifers based on drilling data.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining permeability coefficient of loose confined aquifer based on coal mine geological drilling
  • Method for determining permeability coefficient of loose confined aquifer based on coal mine geological drilling
  • Method for determining permeability coefficient of loose confined aquifer based on coal mine geological drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] figure 1 A schematic flow diagram of a method for determining the regional permeability coefficient of a loose confined aquifer provided by an embodiment of the present invention, as shown in figure 1 As shown, the methods include:

[0039] S101: Collect geological drilling data in a research area.

[0040] S102: Determining the factors affecting the permeability coeffi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for determining the permeability coefficient of an unconsolidated confined aquifer based on geological drilling. The method comprises the following steps: collecting geological drilling information and data; determining influence factors of the permeability coefficient; performing correlation analysis and partial correlation analysis on each influence factor and a permeability coefficient obtained by an existing field water pumping test, and selecting a key influence factor; performing random combination on the key influence factors, performing multiple linear regression analysis, performing goodness-of-fit test and equation significance test, and performing sorting; determining a target regression equation according to the sorting result; and substituting the existing geological drilling information and data of the coal mine into the target regression equation, and determining the permeability coefficient of the unconsolidated confined aquifer. According to the method, mathematical means are applied to engineering practice, existing coal mine geological drilling information and data can be fully utilized, and technical support is provided for research on anisotropy and regional effect of the permeability coefficient of the unconsolidated formation and prevention and treatment of hydrogeological disasters such as mine water inrush.

Description

technical field [0001] The invention relates to the field of water prevention and control in coal mines, in particular to a method for determining the permeability coefficient of a loose pressurized aquifer based on coal mine geological drilling. Background technique [0002] Coal-measure strata in concealed coalfields in North my country are generally covered by Quaternary thick unconsolidated beds, in which multiple confined aquifers develop. Mining of coal seams near loose confined aquifers often occurs hydrogeological disasters such as mine water inrush, surface subsidence, shaft deformation and damage, and even huge economic losses and casualties. The permeability coefficient is an important parameter that reflects the permeability of the soil medium of the loose confined aquifer. In order to avoid the above-mentioned hydrogeological disasters, it is necessary to accurately measure the permeability coefficient of the loose confined aquifer, which is conducive to the sci...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 陈陆望王迎新倪建明胡杰葛如涛许帮贵赵杰何登云陆青山彭智宏
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products