地下工程深井延伸施工测量关键技术研究与应用

The key technique in construction survey of the deep well extension in underground project

提出保护岩柱下延伸深井施工测量的关健环节是精确测定并准确传递既有井筒十字中心线,以及罐道接茬后的垂直度检查与分析.通过测定多层罐梁推算既有井筒十字中心线,进行传递测量误差预计,采取误差控制措施,保证延伸段井筒十字中心线和罐道安装垂准线放样的准确性.对罐道垂直度检查与统计分析,以及工程实际运行结果表明深井延伸施工测量所采取的测量方法可行.

This paper points out that the key technique used in the construction survey of the deep well extension under protection of rock pallor is accurate measurement and transmission of the cross line of wellbore, and the examination and analysis of verticality of cage guide. By measuring multi-story guide beam to calculate the cross line of existing wellbore, predicting survey error in transmission and taking measures to limit errors, the accurat layout of the cross line of wellbore extension and the vertical directrix for guide installation can be guaranteed. The examination and statistic analyses on verticality of cage guide, and the result of practice indicates the survey method in this project is feasible.