摘要
针对矿区保护应用中的岩体变形模拟问题,提出了一种基于确定性有限细胞自动机的开采沉陷模拟方法。该方法采用自动机理论描述岩体内部和表面的沉降分布,能够以相对简单的方法获取沉降槽剖面,且该剖面与大地测量法观测到的剖面一致。在现有细胞自动机解决方案的基础上,通过在模型的第二个细胞网格中增加一个沉降网格的副本,提出了基于传播函数概念的水平位移模拟优化方法。该方法可同时对沉降和岩体模型内部和表面上的水平位移进行模拟。此外,确定了用于描述最大水平位移与最大沉降的比值关系式。对煤层抽取开采引起的300m×800m岩体进行了变形分布模拟。结果显示,提出模型的沉降和水平位移结果与几何积分理论一致,验证了其可行性。
Aiming at the simulation of rock deformation in mining protection applications,a mining subsidence simulation method based on deterministic finite cell automata is proposed. This method uses automata theory to describe the internal and surface settlement distribution of rock masses,and can obtain the settlement trough profile in a relatively simple way. The profile is consistent with the geodetic observation profile. Based on the existing cellular automaton solution,a horizontal displacement simulation optimization method based on the propagation function concept is proposed by adding a copy of a subsidence grid to the second cell grid of the model. The method can simultaneously simulate the horizontal displacements on the interior and surface of the settlement and rock mass models. In addition,a ratio formula for describing the maximum horizontal displacement and the maximum settlement is determined. The deformation distribution of 300 m× 800 m rock mass caused by coal seam extraction is simulated. The results show that the settlement and horizontal displacement results of the proposed model are consistent with the geometrical integration theory,and its feasibility is verified.
作者
李露
刘秀敏
贾民
LI Lu;LIU Xiu-min;JIA Min(Department of Computer and Information Technology,Tianjin Commercial University,Tianjin 300384,China;State Key Laboratory of Rock and Soil Mechanics and Engineering,Wuhan Institute of Rock and Soil Mechanics Chinese Academy of Sciences,Wuhan 430071,China;Yanzhou Coal Mining Co.,Jining No.2 Coal Mine,Jining 272000,China)
出处
《煤炭工程》
北大核心
2018年第10期157-161,共5页
Coal Engineering
基金
国家自然科学基金青年基金项目(41602325)
2016年教育部中国智慧教育督导"十三五"规划重点课题子课题(LHY162537)
关键词
沉降
水平位移
传播函数
确定性有限
邻域细胞自动机
subsidence
horizontal displacement
propagation function
deterministic finite
neighborhood CA
