露井联采条件下采动边坡的变形机理研究

通过对露井联采下采动边坡的分析，建立采动边坡梁模型，根据梁的受力及变形，得出梁变形产生拱的范围，即影响边坡范围；利用顶板破断后形成的沉陷范围，给出了采动边坡稳定系数计算方法，并得到最安全采深，结合安家岭露井联采的实践及边坡位移监测，得出902工作面采动下边坡稳定系数为1.38，最大安全采深为309 m。研究结果表明，露井联采条件下采动边坡变形是由于顶板变形引起的岩层倾角变化引起的，可为露井联采采动边坡稳定治理提供理论依据。

Study on Distortion Mechanism of Mined Slope Affected by Open-pit and Underground Mining

According to the analysis of the mined slope affected by open-pit and underground mining, the girder model of mined slope was built.Based on the stress and distortion of the girder, the range of arch was drawn out from distortion of girder, which is also called the affected slope range.By analyzing the sinking range formed from broken roof strata, the calculation of stabilization coefficient of mined slope and the most safety mining depth were obtained.Combining with the practice of open-pit and underground mining and the displacement survey of slope in Anjialing open pit, the slope stabilization coefficient was 1.38 and the most safety mining depth was 309 meters at the 902 working face.The research indicated that the distortion of mined slope under open-pit and underground mining was drawn from strata angle alter evoked from ceiling distortion, providing the theoretical foundation to keep the stability of mined slope under open-pit and underground mining.