煤田地质与勘探2024，Vol.52Issue(6)：57-68,12.DOI:10.12363/issn.1001-1986.24.04.0229
测线布设形态与测点缺失对采煤沉陷预计参数反演的影响
Impacts of observation line layout morphology and survey point missing on the inversion of predicted parameters of mining subsidence
摘要
Abstract
[Objective]Accurate prediction parameters for mining subsidence are important basis for full cycle green coal mining,while inversion based on the subsidence data of observation lines serves as the main method to obtain these parameters.[Methods]To quantitatively analyze the impacts of the observation line layout morphology and survey point missing on the inversion of prediction parameters for mining subsidence,this study developed a probability integral model-based inversion method for these parameters using the chimpanzee optimization algorithm(ChOA).Using this method combined with digital simulation experiments,this study predicted subsidence parameters under six observation line morphologies and survey point missing in three different areas:the maximum subsidence area,the boundary area,and the inflection point area.Furthermore,this study revealed mechanisms for the impacts of these observation line mor-phologies and survey point missing on the parameter inversion results.[Results and Conclusions]The results indicate that the inversion using ChOA yielded accurate subsidence prediction parameters,with the mean square errors of subsid-ence coefficient q,influence angle tangent tanβ,mining influence propagation angle θ0,and average inflection point off-set s0 being below 0.01,below 0.04,about 1.0,and above 10 m respectively.The changes in the observation line layout morphology produced minor impacts on θ0 but greatly influenced q,tanβ,and s0.In the case of non-standard observation line morphologies,relying solely on the parameter inversion method may lead to the distortion of inversion results.In the case of the insufficient mining of a mining face,the survey point missing in the maximum subsidence area had slight effects on tanβ and θ0.However,with an increase in the number of missing survey points in the maximum subsidence area,information on the maximum subsidence gradually shrank,which led to gradually decreasing q and s0.The survey point missing in the boundary area had small impacts on parameter inversion results but influenced the determination of the movement range of subsided basins,along with angular parameters such as boundary and movement angles.In the case where missing survey points in the inflection point area accounted for less than 40%,the survey point missing posed minor impacts on the parameter inversion.Otherwise,with an increase in the number of missing survey points,the subsidence curve morphology was out of control,q and s0 gradually decreased,while tanβ gradually increased.Given the strong correlations among these parameters,when the minimum sum of squares of prediction residuals acts as the cri-terion for the fitness function,it is feasible to reduce the impacts of changes in the observation line layout morphology or survey point missing on the parameter inversion results by narrowing the parameter optimization ranges and using inter-polation.关键词
开采沉陷/参数反演/概率积分模型/观测线特征/黑猩猩优化算法Key words
mining subsidence/parameter inversion/probability integral model/observation line characteristic/chim-panzee optimization algorithm分类
矿业与冶金引用本文复制引用
郭庆彪,余庆,郑美楠,罗锦..测线布设形态与测点缺失对采煤沉陷预计参数反演的影响[J].煤田地质与勘探,2024,52(6):57-68,12.基金项目
国家自然科学基金项目(52274164) （52274164）
安徽省优秀青年科学基金项目(2308085Y31) （2308085Y31）
中国科协青年托举人才工程项目(2022QNRC001) （2022QNRC001）
煤炭开采水资源保护与利用国家重点实验室开放基金项目(GJNY-21-41-15) （GJNY-21-41-15）
安徽省重点研究与开发计划项目(202104a07020001) （202104a07020001）
