Deep stratum native fracture slurry filling pressure judgment device and grouting pressure judgment method thereof

By using a device to determine the grout filling pressure in deep strata fissures, and employing a rangefinder and power unit to accurately measure the grouting pressure, the problem of inaccurate grouting pressure determination in deep coal mining has been solved, resulting in improved grouting performance and cost savings.

CN120925546APending Publication Date: 2025-11-11NO 1 SURVEYING TEAM OF ANHUI CHARCOAL FIELD & GEOLOGY BUREAU
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Patent Information

Application Number
CN202511290905.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2025-11-11

AI Technical Summary

Technical Problem

In the process of deep coal mining, existing technologies make it difficult to accurately determine the pressure range at which grouting in deep strata fractures ends, leading to problems such as poor grouting effect or material waste.

Method used

A device for determining the filling pressure of grout in deep strata primary fractures was designed, including grouting equipment, multiple sets of detection holes and pressure determination unit. By cooperating with a rangefinder and a power component, the device can accurately measure the grouting pressure and groundwater level changes to determine the minimum pressure range.

Benefits of technology

It achieves precise control of grouting pressure, avoiding poor results or material waste caused by excessively low or high pressure, and ensuring the effectiveness and cost-effectiveness of grouting treatment.

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Abstract

The invention discloses a deep stratum native fracture slurry filling pressure judgment device and a grouting pressure judgment method thereof.The deep stratum native fracture slurry filling pressure judgment device comprises a grouting hole formed in a foundation and further comprises grouting equipment arranged at the grouting hole and used for conducting grouting on the positions, with different depths, of the grouting hole; the multiple groups of detection holes are uniformly distributed around the grouting holes; the pressure judgment units are arranged in the detection holes and used for judging the grouting filling pressure, through arrangement of the detection holes and the pressure judgment units, the pressure judgment range can be more accurately reduced, and therefore the situation that the filling effect cannot be achieved due to the fact that the grouting pressure is too small is avoided; and grouting material waste caused by too high grouting pressure can be avoided, effective treatment is achieved, and cost is saved.
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