三峡工程中高边坡测斜仪的施工埋设与监测

介绍了三峡工程升船机及临时船闸高边坡岩体内部水平位移的测点布置，叙述了测斜仪的施工埋设步骤及观测方法，对三峡工程升船机及临时船闸高边坡测斜仪的观测结果进行初步定性分析。测斜仪观测结果表明，三峡工程升船机及临时船闸高边坡的变形较小，整体稳定性态是正常安全的，个别测孔的测值偏大，说明高边坡中局部可能存在薄弱环节，今后需加强观测，注意局部岩体内部水平位移的发展动向及变化规律。说明采用测斜仪进行岩体内部水平位移观测是可行的。通过现场施工，对测斜仪的施工埋设也积累了经验，为进一步提高边坡安全监测技术奠定基础。

EMBEDMENT OF CLINOMETERS AND HIGH SLOPE MONITORING AT THREE GORGES PROJECT

The paper expounds the measuring point layout for horizontal displacement in the rock mass at the high slop of the ship lift and temporary ship lock of the Three Gorges Project. The embedment of clinometers and the observation method are introduced. Qualitative analysis of the observational data from clinometers is done. The observational result from clinometers indicates that the deformation value is small, the rock mass is stable, and the observational data for a few individual points are large, showing that weak links exist in some parts of the high slope, and observation should be enhanced, especially the development and change of horizontal displacement in rock mass. The study shows that it is feasible to observe the horizontal displacement in rock mass with the clinometer. Through construction practice, experience in clinometer embedment is accumulated and the foundation is laid for safety observation of high slopes.