矿井含水构造附近采动岩体的温度响应特征相似模拟研究  

SIMILARITY SIMULATION STUDY OF TEMPERATURE RESPONSE FEATURE OF ROCK MASS AFFECTED BY MINING AROUND WATER-BEARING STRUCTURE

作　　者：张庆松[1] 高阳[1] 李术才[1] 李利平[1] 原小帅[1] 赵建刚[1] 李志鹏[1] 

机构地区：[1]山东大学岩土与结构工程研究中心,山东济南250061

出　　处：《岩石力学与工程学报》2011年第7期1356-1362,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50874068);山东省自然科学基金资助项目(Y2008F22;ZR2010EQ033)

摘　　要：研究含水构造附近在采动影响下围岩的热扩散理论,采用新型的流–固耦合相似材料和相似模拟试验架,完善光纤温度、多点位移监测系统。对含水构造附近的煤层开采进行试验模拟,重点分析采动过程中覆岩变形引起渗流场、温度场的变化规律。通过试验得出:煤层开采前,初始地温场中含水构造处具有明显的低温异常特征;采动过程中,顶板岩体的热对流作用随采场推进逐步加强,岩体温度逐步降低,水体的温度影响范围逐步增大;在采动应力、承压水的耦合作用下,采场顶板断裂突水,岩体温度产生显著的突跳特征。通过试验数据,拟合试验条件下岩体温度场曲线的经验公式,为岩体温度法探水提供可靠的试验依据。The theory of thermal diffusion in surrounding rocks affected by mining around the water-bearing structure is studied.The new style advanced model test device and similar material of typical hydro-mechanical coupling is used and the monitoring system of grating temperature and displacement is improved.The coal mining around the water-bearing structure is simulated by tests.The variation laws of seepage and temperature fields induced by deformation of overburden rock during mining are analyzed.There is obvious abnormal temperature feature in the intact rock mass around the water-hearing structure before mining.The temperature of rock mass reduces gradually with the mining.Temperature response feature of water inrush is obvious in layered rock mass upper the gob.The temperature fitting curve of rock mass is concluded with the data of the model test.It provides the theoretical foundation for the forecasting water with rock mass temperature method.

关 键 词：采矿工程 岩体温度法 水体预报 模型试验 

分 类 号：TD74[矿业工程—矿井通风与安全]