Dynamic evaluation method for equivalent volume pressure relief effect based on large-diameter pressure relief borehole
By dividing the affected area and monitoring the borehole volume change rate to calculate the dynamic volumetric efficiency index, the inaccuracy of evaluating the pressure relief effect of large-diameter pressure relief boreholes was solved, enabling precise control of rockbursts and improving the stability and safety of coal mining operations.
Patent Information
- Application Number
- CN202610289467.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-10
- Publication Date
- 2026-07-17
AI Technical Summary
The existing technology lacks objective and quantitative means to evaluate the pressure relief effect of large-diameter pressure relief boreholes, resulting in the boreholes failing to perform their function or gradually weakening after construction, making it impossible to accurately prevent and control rockburst disasters.
By dividing the area into areas of strong mining impact, medium mining impact, and weak mining impact, monitoring the borehole volume change rate, calculating the dynamic volumetric efficiency index, and dynamically adjusting mining operations, the pressure relief effect can be accurately assessed and adjusted.
It improves the accuracy of borehole deformation monitoring, enhances the stability and safety of coal mining, avoids excessive or insufficient engineering measures, and reduces costs.
Smart Images
Figure CN122407200A_ABST