井工矿开采致覆岩层移动变形预测计算模型及工程应用  

Overlying strata movement and deformation calculation prediction models for underground coal mines

作　　者：程健维[1] 赵刚 撒占友[2] 郑万成[3] 王云刚[4] 刘杰[2] CHENG Jianwei;ZHAO Gang;SA Zhanyou;ZHENG Wancheng;WANG Yungang;LIU Jie(School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;College of Automobile and Mechanical Engineering,Qingdao University of Technology,Qingdao 266000,China;Sichuan Provincial coal Design&Research Institute,Chengdu 610073,China;School of Safety Science and Engineering,Henan University of Technology,Jiaozuo 454003,China)

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]青岛理工大学汽车与机械工程学院,山东青岛266000 [3]四川省煤炭设计研究院,四川成都610073 [4]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《采矿与岩层控制工程学报》2020年第4期16-25,共10页Journal of Mining and Strata Control Engineering

基　　金：江苏省自然科学基金面上资助项目(BK20181355)。

摘　　要：长壁工作面开采强度大、速度快,煤层上覆岩层的原始应力平衡在短时间内遭到破坏,导致从直接顶到地面产生不同程度的位移变形,对井下开采活动及地面基础设施造成严重的影响和破坏。掌握由开采导致的岩层移动、变形的时间及空间特性,有助于对相关灾害进行防治。以预测地表沉陷的影响函数法为基础,通过相关参数的改造与理论推导,将其用于对地下岩层移动及变形的计算与预测,建立水平煤层工作面上覆岩层终态二维开采沉陷预计模型和动态二维开采沉陷预计模型。并使用该模型进行工作面保护煤柱上覆岩层破坏影响的预测评估、水体下采煤安全性评价、瓦斯抽采巷道层位优化等方面,实践表明该模型具有良好的实用性。The Longwall working face has high mining intensity and advance speed.The original stress balance of overlying strata of the coal seam is altered in a short time.It could produce different degrees of deformations in the overlaying strata,which causes serious impacts and damages to underground mining activities and ground infrastructure.Understanding the temporal and spatial characteristics of strata movement and deformation caused by mining is essential to prevent and control related disasters.It is of great significance to coal mine safety production.Based on the influence function method used to predict the surface subsidence,through the transformation of relevant parameters and theoretical derivation,the method is extended to the calculation and prediction of the movement and deformation of underground rock strata,and the final two-dimensional mining subsidence prediction model and the dynamic two-dimensional mining subsidence prediction model of the overlying strata in the horizontal coal seam are established.The model has been used to predict and evaluate the damage effect of the overlying strata of the coal pillar,to evaluate the safety of coal mining under the water,and to optimize the strata of the gas extraction roadway,which shows that the model has good practicability.

关 键 词：影响函数法 等分层模型 自然分层模型 动态开采预测模型 工程应用 

分 类 号：TD325[矿业工程—矿井建设]