基于连续-离散介质耦合的密实充填开采地表沉陷预测模型  

Research on surface subsidence prediction of dense solid backfilling mining based on the coupling of continuous and discrete medium

作　　者：郭庆彪[1,2,3] 郭广礼 吕鑫[2] 张文馨[1,3] 覃双煜 GUO Qingbiao GUO Guangli LU Xin ZHANG Wenxin QIN Shuangyu(School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China Geographic Information and Tourism College, Chuzhou University, Chuzhou 239000, China National Administration of Surveying, Mapping and Geoinformation Key Laboratory of Land Environment and Disaster Monitoring, China University of Mining and Technology, Xuzhou 221116, China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]滁州学院地理信息与旅游学院,安徽滁州239000 [3]国土环境与灾害监测国家测绘地理信息局重点实验室,江苏徐州221116

出　　处：《中南大学学报（自然科学版）》2017年第9期2491-2497,共7页Journal of Central South University:Science and Technology

基　　金：国家"十二五"科技支撑计划项目(2012BAB13B03);江苏省高校优势学科建设工程资助项目(SZBF2011-6-B35);江苏省普通高校研究生科研创新计划项目(KYLX15_1438)~~

摘　　要：为构建固体密实充填开采地表沉陷预测模型,首先结合现场钻孔窥视及相似材料模拟分析固体密实充填开采的覆岩变形特征;随后采用Winkler和Vlazov两类弹性地基梁建立基本顶力学模型,得到基本顶弯曲下沉方程;将基本顶的弯曲下沉视为上覆岩层沉降的边界条件,基于离散介质运移规律推导出固体密实充填开采的地表沉陷预测模型。最后将预测模型应用于花园煤矿,得到的下沉量预测值与实测值基本吻合,证实了模型的准确性。In order to establish the surface subsidence prediction model for dense solid backfilling mining, the strata movement and deformation characteristics were firstly analyzed using the drilling peep and similar material simulation model, which are different from that caused by caving mining method. Subsequently, the deflection formula of basic roof was obtained using the Winkler model and Vlazov model. The flexural subsidence of the basic roof can be regarded as the boundary condition for overlying strata subsidence. And then the surface subsidence prediction model was deduced based on the discrete media migration law. Finally, the established model was applied to the Huayuan coal mine. The results show that the subsidence prediction values are basically consistent with the measured values, confirming the accuracy of the prediction model.

关 键 词：固体密实充填开采 基本顶 弹性地基梁 地表沉陷预计 

分 类 号：TD325[矿业工程—矿井建设]