摘要
针对厚表土层沉陷的复杂性,研究了土体受直接开采沉陷后引起的失水固结和排水固结的计算方法,沉陷土体产生流动的条件和计算方法及地表裂缝发育演化的规律等。通过研究获得了一个完备的开采沉陷预计模型,即地表沉陷=开采直接影响模型+附加固结沉陷模型+附加流动沉陷模型;获得了地表裂缝深度和宽度的估算公式。所获得的成果可以全面解释厚表土层条件下所体现出来的各种特殊规律,比较准确地预报地表的移动变形和裂缝情况,实践证明可以有效地应用于生产实际。
Aimed at the complicated subsidence of thick soil layer, the calculation method of water-missing concretion and water-drifting concretion of soil induced by mining subsidence, the flow condition and calculation method of soil body induced by subsidence and the evolvement rule of crack on surface are researched in this paper. A self-contained forecast model of mining subsidence is obtained, that is, the subsidence of surface is equal to direct model of mining plus additional concretion subsidence model plus additional flow subsidence model. The estimation formula of the depth and width of surface crack is obtained also. These results can be used to explain roundly all kinds of special rules under thick surface layer and forecast precisely the movement, distortion and crack of surface. It has proved that this model is effective for production practice.
出处
《煤矿开采》
2006年第4期4-6,36,共4页
Coal Mining Technology
关键词
开采沉陷
土体流动
预计
控制
移动和变形
mining subsidence
soil body flow
forecast
control
movement and distortion
