抚顺西露天矿北帮地面长期剧烈变形原因的分析

CAUSAL ANALYSIS OF LONG-TERM FIERCE DEFORMATION OF GROUND SURFACE AT THE NORTH WALL OF THE WEST OPEN PIT MINE IN FUSHUN

抚顺矿区西部煤田为井工矿与露天矿联合开采方式。自70年代末期开始，地面变形持续增大，由此造成周边工厂及各种建筑设施受到严重破坏。到目前为止，国家及相关企业已投资几亿元用于控制变形的发展及相应的安全保护措施。该文将综合分析各个影响因素的作用特点及其在变形中所起的作用，最终归纳出地面长期剧烈变形的主导性因素，以便为该类矿山的后续开采提供参考依据，同时为确保周边安全提供决策依据。

The combined mode of excavation of the Shaft Engineering mine and the Open Pit mine was adopted at the west coal mine of Fushun mining district. Scince the end of seventies, the ground surface deformation continu ously increases, that results in the surrounding plants and vchous construction facilities suffered severe damage. Up to now, the state and related enterprises have invested several hundred millions yuan for controlling the develop ment of deformation and taking corresponding safety measures. This paper synthetically analyzes the action charac teristics of various influencing factors and the role they play in the deformations. Finally, it deducts the leading fac tors of the long - term fierce deformation of ground surface, so as to provide a referential basis for the subsequent excavation of such kind of mines. At the same time, it serves as the decision basis for ensuring the safety of sur roundings.