摘要
黄陵矿区一号煤矿302、303工作面开采进行的地表移动观测结果表明,采动引起黄土沟壑区地表移动变形剧烈,在活跃期内地表下沉达到最大下沉值的97%,地表移动伴随较大的台阶裂缝非连续变形破坏,地表移动期短,移动角值较大,下沉系数和水平移动系数较大。分析观测结果表明,垂直裂隙发育的厚湿陷性黄土及沟谷梁峁特殊地形,导致煤层覆岩移动变形在传递到土层后快速沟通黄土层中的垂直裂隙形成地表裂缝,在山体重力作用下,引起山体滑移加剧了地表台阶式裂缝破坏程度,导致下沉系数和水平移动系数增大。依据分析结果,建立了地表最大水平移动和水平变形的预计模型。
Based on surface movement and deformation observation data in the 302 and 303 faces in Huangling mine,the present study finds movement and deformation express strenuously and surface subsidence is up to 97% in active stage.Surface is moving with great crack and discontinuous deformaiton failure.The surface deformation develops rapidly.Displacement angle is large.Subsidence factor and horizontal movement factor are high.The results show that collapsible loess with crack and the gully terrain led to surface crack when overburden movement deformation developed in loess.Crack failure will be further intensified by mountain body slip induced by weight force.Meanwhile,subsidence factor and horizontal movement factor is gradually higher.Finally,horizontal movement and horizontal deformation prediction model was preliminarily established according to results analysis.
出处
《矿山测量》
2010年第2期38-40,共3页
Mine Surveying
基金
国家自然科学基金项目(40572155)
国家科技部项目(2005DIB2J179)
