Research on water leakage control technology of inclined shaft of coal mine based on cement soil curtain of equal thickness

The loose layers and shallow weathered bedrock in western China are rich in water, and the inclined shaft crossing the water-rich loose layer is prone to leak at the wellbore construction joints, concrete joints and wall cracks. Leakage will lead to the deterioration of underground working environme...

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Veröffentlicht in:Méitàn kēxué jìshù 2023-07, Vol.51 (7), p.224-233
Hauptverfasser: Zhibin YANG, Yinbin SHI, Hai WANG, Wenping LI, Wenbo LYU, Zhan LEI
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Sprache:chi
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Zusammenfassung:The loose layers and shallow weathered bedrock in western China are rich in water, and the inclined shaft crossing the water-rich loose layer is prone to leak at the wellbore construction joints, concrete joints and wall cracks. Leakage will lead to the deterioration of underground working environment, lower working efficiency, increase the burden and cost of underground drainage, and affect the safety of coal mine production. In order to solve the above problems, this paper analyses the characteristics of water seepage in slanting coal mine shafts from the perspective of protecting groundwater resources and safe operation of shafts, and the existing management measures such as drainage, post-wall grouting, rotary pile spraying and curtain grouting. And the principle and structure of soil-cement curtain with equal thickness of water leakage level in inclined shaft, the basis of parameter selection and the method of curtain construction were studied. The effects of formation conditions, comprehensive moisture
ISSN:0253-2336
DOI:10.13199/j.cnki.cst.2023-0313