【摘要】：為確保長平煤礦回風立井的施工安全,通過理論分析確定井筒在風化基巖和基巖中的施工、支護方案,根據井筒穿過的含水層情況,決定采用工作面超前預注漿和壁后注漿的綜合防治水技術。通過分析含水層的位置確定注漿段高,結合漿液的有效擴散半徑估算注漿量,超前預注漿量為1 758 m~3,壁后注漿量為1 585 m~3。
[Abstract]:In order to ensure the construction safety of return air shaft in Changping Coal Mine, the construction and support scheme of wellbore in weathered bedrock and bedrock are determined by theoretical analysis, and according to the aquifer passed through the wellbore, It is decided to adopt the comprehensive water prevention and control technology of pre-grouting and post-wall grouting in working face. The height of grouting section is determined by analyzing the position of aquifer, and the grouting quantity is estimated according to the effective diffusion radius of slurry. The amount of pre-grouting is 1758 m 鈮，

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