A self-drilling horizontal-vertical permeability coefficient testing device and testing method
The self-drilling horizontal-vertical permeability coefficient testing device solves the problem of accuracy in permeability coefficient measurement in deep overburden soil, achieving undisturbed high-precision testing and enabling simultaneous measurement of horizontal and vertical permeability coefficients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
- Filing Date
- 2026-02-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing permeability testing methods cannot accurately measure horizontal and vertical permeability in deep overburden soils. Traditional indoor tests involve large disturbances and have low accuracy, while in-situ tests are complex and time-consuming, failing to meet the testing needs of deep overburden soils.
Design a self-drilling horizontal-vertical permeability coefficient testing device, including multiple water pipes, an upper detection structure, a lower detection structure, and a drilling structure. It conducts in-situ testing in the soil by self-drilling, and measures the horizontal permeability coefficient using the connecting part of the upper and lower cavities and the detection part. The inner and outer ring cylinder structure ensures the accuracy of the vertical permeability coefficient.
It enables high-precision testing in deep overburden soil without the need for pre-drilling, reduces soil disturbance, and can simultaneously measure horizontal and vertical permeability coefficients, resulting in more accurate test results.
Smart Images
Figure CN122409449A_ABST