A method for analyzing a blank zone of a control range of a drainage bore based on three-dimensional space

CN115539128BActive Publication Date: 2026-10-16GL TECH CO LTD +1
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Patent Information

Application Number
CN202211171258.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2022-08-09
Filing Date
2022-09-23
Publication Date
2026-10-16
Estimated Expiration
2042-09-23

AI Technical Summary

Technical Problem

[0004]本发明的目的在于提供一种基于三维空间的抽采钻孔控制范围空白带分析方法，用以解决现有技术利用人工分析时不能准确反应空白带空间状态、无法准确判定空白带的位置及大小等准确信息

Benefits of technology

[0010]Its beneficial effects are as follows: When constructing a three-dimensional coal seam using the location information of the coal-encountering and coal-terminating points in a borehole, if the borehole control range is insufficient or there are blank areas, a blank zone exists within the constructed three-dimensional coal seam. To accurately and intuitively determine the information of the blank zone, the blank control range of a single borehole can be accurately determined by using the coal segment formed between the coal-encountering and coal-terminating points in a single borehole, as well as the borehole extraction radius. That is, the sum of the three-dimensional extraction range models of all coal segments is used as the borehole control range, enabling accurate construction of the borehole control range. Based on the constructed three-dimensional coal seam and the borehole control range, the blank zone within the constructed three-dimensional coal seam can be accurately and intuitively obtained. Compared with traditional analysis using manual planar diagrams, this method can present the analysis results in a more three-dimensional, intuitive, and accurate manner; it provides a data foundation for blank zone analysis using various automated systems; and it enables precise positioning of borehole blank zones and automatic calculation of coal volume.

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Abstract

The present application belongs to the technical field of coal mine gas disaster prevention and control, and particularly relates to a method for analyzing blank zone of drilling control range based on three-dimensional space. The method comprises the following steps: obtaining position information of all coal points and coal stopping points in the evaluation unit; constructing a three-dimensional coal seam according to the position information, and constructing a three-dimensional extraction range model of the coal section according to the drilling extraction radius, taking the sum of the three-dimensional extraction range models of all coal sections as the drilling control range; the coal points and the coal stopping points between a single drilling form a coal section, and the drilling control range is determined by processing the three-dimensional coal seam and the drilling control range to determine the drilling control range blank zone. Compared with the traditional manual planar graph analysis, the method for determining the drilling control range blank zone can more stereoscopically, intuitively and accurately display and analyze the results, provides a data basis for blank zone analysis with various automatic systems, and can accurately locate the drilling blank zone and automatically calculate the volume of coal.
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