摘要
为了准确预测地下开采引起的地表沉陷,针对Knothe时间函数模型的不足,借鉴岩石流变力学中非定常流变模型的建模思路,假定Knothe时间函数中的时间影响系数不是固定不变的常量,而是与时间有关的变量,从而对Knothe时间函数模型进行了改进。在此基础上,提出了一种新的地表下沉盆地模型,并将该模型与改进的Knothe时间函数模型相结合,建立了一种新的开采沉陷动态预测模型。利用实测资料对模型的合理性进行了验证,结果表明:该模型能够描述开采沉陷随时间的动态发育过程,且预测曲线和实测数据吻合良好,说明模型具有一定的适用性。
In order to accurately predict the surface subsidence due to underground mining,an improved Knothe time function model,based on the modeling methodology from non-stationary rheological model in rock rheological mechanics,was which assumes that the time influence coefficient of Knothe time function is time related in view of the poor results of Knothe time function model in predicting mining dynamic subsidence.On this basis,a new surface subsidence basin model was put forward,and then combined with the improved Knothe time function model to build a new dynamic prediction model for mining subsidence.The rationality of this prediction model was verified using the measured data of mining subsidence.The results show that the new model can well describe the dynamic development process of mining subsidence over time,and the predicted curves agree well with the measured data,which proves the applicability of the new model built.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2015年第3期516-521,共6页
Journal of China Coal Society
基金
国家自然科学基金资助项目(51404184)
西安建筑科技大学人才科技基金资助项目(RC1362)
