关键词: 排土场, 稳定性, 地质灾害治理, 时空效应, 主动调控机制

Abstract: The high bench and high intensity dumping，large-scale dumping equipment are becoming the development tendency for mine dump.Consequently，the dump bench instability or other foundation failure rise rapidly，that is，the dump capacity decreases with the dump height lowered，and strengthening or cleaning the soft layer of foundation results in vast project costs.The practicality of the passive control measures，such as debris dam，retaining wall at toe，was analyzed，and the validity of the drain was evaluated.Based on the environmental protection，and starting with interaction characteristics between the waste dump and the foundation，the design principle of deformation and local failure allowance was proposed.Active regulation mechanism was established according to spatial effect，that sets up a reasonable dump space and adjusts time-space relation during waste dumps emission.①On the waste dump with convex slope，the emission intensity must be controlled to ensure normal consolidation and settlement，and the waste disposal discharge be taken as the key adjusting and controlling index.②On the waste dump with soft ground，the first dump bench height should be limited，and the bearing strength of the foundation should be improved by preloading principle，regarding it as the base of the next bench and avoiding from wide-spread cleanup of the soft soil layer.③When the ridges and gulches are criss-crossed in the site，and the foundation is soft，the symmetrical，even and vertical disposal style can evade retrogressive landslide induced by lateral extrusion.Meanwhile，by adopting the zoning interval discharging and based on the principle of interface relief，the discharging base was built to ensure that raining does not induce into landslide and debris flow.The field tests proved that the dump process with active regulation gave consideration on both the security and the economy，and met requirement of the mine.

Key words: Waste dump, Stability, Geological disaster treatment, Space-time effect, Active regulation mechanism