Geoelectrical Sensor Device for Continuous Mineral Deposit Prospecting
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Solution Overview
Problem
Existing geoelectrical prospecting methods struggle to continuously map the course and structure of mineral deposits and adjacent rock formations without penetrating the soil, limiting their application in continuous mining operations.
Innovation Solution
A sensor device with a central electrode and uniformly distributed outer electrodes on its surface, allowing contact with the ground without penetration, enabling the creation of potential fields for measuring mineral deposit thickness and rock boundary layers, suitable for integration with mining machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ground spikes are used to penetrate the soil for geoelectrical prospecting, then measurement capability is improved, but the method cannot be used on conveying installations of winning machines and continuous working is limited
Solution Approach 1:
The patent replaces the mechanical penetration method (ground spikes) with an electrical contact method. The sensor head makes electrical contact with the ground surface through conductive elements without requiring physical penetration, enabling compatibility with conveying installations and continuous working while maintaining geoelectrical measurement capability
Solution Approach 2:
The sensor head is divided into multiple conductive elements (central electrode and outer electrodes) arranged in specific geometric patterns. This segmentation allows the sensor to make contact with the ground surface at multiple points simultaneously, improving measurement capability while maintaining compatibility with moving conveying installations
2Reliability
If ground spikes penetrate the soil, then electrical contact is established, but the sensor cannot continuously track mineral deposit course and structure in moving winning machines
Solution Approach 1:
The sensor head is designed to be dynamic rather than static. The conductive elements are arranged to maintain continuous electrical contact with the moving ground surface as the conveying installation moves, enabling continuous tracking of mineral deposit course and structure throughout the working process
Solution Approach 2:
The sensor head serves multiple functions: it makes electrical contact with the ground surface, measures potential fields, and can be integrated with conveying installations. The geometric arrangement of conductive elements enables both reliable electrical contact and continuous measurement during movement
3Device complexity
If a simple electrode arrangement is used, then device complexity is reduced, but the ability to prospect ground layers laterally and perpendicularly is limited
Solution Approach 1:
The patent employs asymmetric geometric arrangements of conductive elements, particularly with outer electrodes positioned at specific distances and angles from the central electrode. This asymmetric configuration creates electric field patterns that enable detection of ground layers in multiple directions (laterally and perpendicularly) while maintaining manageable device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous, non-invasive prospecting of mineral deposits and rock boundaries, providing accurate data on specific resistance and induced polarization, suitable for use with plough and cutting systems in coal mining, enhancing mining efficiency and safety.
Implementation Method 1
a potential field being built up in the ground with aid of a sensor device which comprises a sensor head whose front surface forms the sensor measuring surface and which has at least one electrode
Implementation Method 2
it is also necessary to take account of the physical processes of the induced polarization (IP effects) which, as a function of the soil present, mostly lead to a rise and decay of the measurement potential fields than the applied potential fields
Implementation Method 3
steel ground spikes are used as electrodes with which a current is fed into the soil by means of a voltage source so as to build up in the ground potential fields
Data Source
AI summary
A sensor device and a method for the geoelectrical prospecting of the location, the (stratographic) arrangement, and the course of raw mineral deposits and of the adjoining rock delimiting these deposits, particularly in the continuous working of the mineral deposits, having a sensor head whose front surface forms the sensor measuring surface, and at least one electrode. The sensor head can make contact with a ground surface, and a central electrode and a plurality of outer electrodes distributed geometrically uniformly around the central electrode are arranged on the sensor measuring surface, the central electrode and the outer electrodes being electrically conductive and electrically separated from one another.