采空区地表移动变形的时间影响参数

摘要

多层采空区多次复杂开采造成的累积沉降不能简单地用单一采空区地表移动变形模型作参照.对采空区的研究,时间影响参数是工程稳定性重点研究和考虑的问题.通过变形观测数据,得到一系列的时间影响参数C的数据点.C是随时间动态变化的,是相应的诸多条件综合影响的结果,拟合得到现时段的时间影响参数经验式.这对采空区今后的残余沉降的预测具有重要的实际意义.%Accumulative subsidence in high-rise complex repeatedly mined-out area caused by mining could not simply use the mobile surface deformation model for a single mined-out area as the reference. In the mined-out area research, time parameters were the focus and consideration in the stability of project. Through the distortion observation, we could obtain a series of time influence parameter C data. C varies with the time, as a result corresponding many condition synthesis influence. Interval time influence parameter empirical formula was obtained by fitting at this stage. It is practically helpful for predicting residual settlement in the mined-out area in the future.