Evaluation method for grouting transformation effect of fractures in thick Luohe Formation aquifer in coal mine roof

By injecting polymer water-absorbing resin material into the aquifer of the Juhou Luohe Formation on the roof of the coal mine and combining it with an automatic grouting device and monitoring system, the problem of poor curtain grouting effect in the prior art was solved, and effective grouting transformation and water bursting risk reduction was achieved.

CN118822333BActive Publication Date: 2025-03-18SHANDONG ENERGY GROUP XIBEI MINING CO LTD +1
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Patent Information

Application Number
CN202410578683.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-11
Publication Date
2025-03-18
Estimated Expiration
2044-05-11

AI Technical Summary

Technical Problem

The prior art is difficult to effectively control the water burst problem caused by the aquifer of the Juhuoluohe Formation on the roof of the coal mine, especially the effect of the curtain grouting material is poor, and the existing methods have no significant effect on the transformation of the huge aquifer.

Method used

The polymer water-absorbent resin material is used to grout into the aquifer of the Juhou Luohe Formation on the roof of the coal mine through curtain grouting technology, and combined with the automatic grouting device, a monitoring system is set up for data acquisition and analysis, and the grouting transformation effect is comprehensively evaluated by establishing a membership function.

Benefits of technology

Through the grouting transformation of polymer water-absorbing resin materials, the grouting effect of the aquifer of the Juhuo Luohe Formation of the coal mine roof is significantly improved, and the risk of water burst is reduced, and an effective evaluation method is provided to ensure the success of grouting transformation.

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Abstract

The present invention discloses an evaluation method for the effect of grouting transformation of fissures in the extremely thick Luohe formation aquifer in the roof of a coal mine, and relates to the technical field of safe production in coal mines. It mainly evaluates the grouting effect of the extremely thick Luohe formation aquifer, and includes the following steps: after injecting a polymer absorbent resin material into the aquifer, a big data information processing system located on the ground and a data collection system located under the surface are arranged; then, the big data information processing system is used for analysis, three primary indicators and nine secondary indicators are selected, and each sub-item is calculated, and the membership of each part is obtained according to the proportion of each item calculated by the field measured data and the formula, and finally, the membership of each part is substituted into the formula for superposition calculation between each sub-item to obtain the total membership. The method proposed by the present invention provides a reference for evaluating the filling effect of actual engineering through effective and accurate calculation analysis.
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