基于Boltzmann函数的地表动态下沉模型研究

发布时间：2018-06-21 00:44

本文选题：Boltzmann函数 + 动态下沉　；参考：《煤矿开采》2017年03期

【摘要】：煤矿开采造成地表下沉,在下沉过程中,地表点的w-t曲线近似呈倒S型;根据Knothe时间函数,提出了基于Boltzmann函数的地表动态下沉模型,分析了模型参数应满足的条件,并结合现场实测数据分析了利用该模型进行动态下沉预计的可行性;在采用预测值与实测地表下沉值误差较小的B30点进行拟合求参时,得到模型参数分别为a=0.99,b=-136.4,c=6.803,d=371.4,相关系数为0.99,相关程度较高,能正确反映地表动态下沉的过程,表明该模型具有一定的适用性。
[Abstract]:In the process of subsidence, the w-t curve of surface point is approximately inverted S shape, according to the Knothe time function, the dynamic subsidence model based on Boltzmann function is put forward, and the conditions that the parameters of the model should be satisfied are analyzed. The feasibility of dynamic subsidence prediction by using the model is analyzed by combining the field measured data, and the parameters are obtained by fitting the B30 points with small error between the predicted values and the measured ground subsidence values. The parameters of the model are: a ~ (0.99b) ~ (-136.4C) ~ (6.803) d ~ (371.4), the correlation coefficient is 0.99, and the correlation degree is high, which can accurately reflect the dynamic subsidence process of the earth's surface, which indicates that the model is applicable to a certain extent.
【作者单位】：煤炭科学研究总院开采研究分院;天地科技股份有限公司开采设计事业部;
【基金】：国家自然科学基金资助项目(51604151)
【分类号】：TD327

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