【摘要】：為確保長(zhǎng)平煤礦回風(fēng)立井的施工安全,通過(guò)理論分析確定井筒在風(fēng)化基巖和基巖中的施工、支護(hù)方案,根據(jù)井筒穿過(guò)的含水層情況,決定采用工作面超前預(yù)注漿和壁后注漿的綜合防治水技術(shù)。通過(guò)分析含水層的位置確定注漿段高,結(jié)合漿液的有效擴(kuò)散半徑估算注漿量,超前預(yù)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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