金川二矿区大体积充填体变形机制与变形监测研究

doi:10.13722/j.cnki.jrme.2015.01.011

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Abstract The characteristics of surface subsidence and ground pressure in recent years in No.2 mine area, Jinchuan were briefly described and the mechanism of deformation was carefully analyzed. A monitoring scheme was implemented based on the results of deformation analysis. A device was made to monitor the relative deformation of bulky backfill of 50 m in height at the altitude level of 1 150 to and 1 200 m. Bubble level was used to monitor the vertical displacement of the bulky backfill and the surrounding rock. The monitoring results shows that the rate of total deformations of measurement points is 16.00–51.44 mm/month and that the maximum accumulated deformations is 515 mm. The rate of relative deformations at measurement points is 1.953–28.585 mm/month，and the maximum accumulated relative deformations is 285.85 mm. The development trends of the total deformation，the relative deformation and the deformation of surrounding rock are also studied.

Key words： mining engineering bulky backfill stability deformation mechanism deformation monitoring

Received: 28 October 2013

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.01.011 OR http://www.rockmech.org/EN/Y2015/V34/I01/104

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