某矿区岩石蠕变特性试验研究  

Testing study on creep characteristic of ore-rock at a mine

作　　者：何锦龙[1] 袁海平[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《中国矿业》2011年第5期67-70,共4页China Mining Magazine

摘　　要：某矿地处高应力区,矿岩破碎,节理裂隙发育,且具有显著流变性,开采难度极大,给矿山正常生产和工程安全带来巨大挑战,因此,矿区岩石蠕变规律研究成为一项重要的基础工作。为此,根据试验要求及实际取样情况,对该矿区软弱复杂矿岩蠕变特性进行了试验研究。在对试验数据深入分析和对比研究的基础上,选取Burgers模型作为研究的重点来反映岩石的蠕变特性,并编制了Burgers蠕变模型试验数据处理程序,对蠕变模型参数进行了拟合和加权平均取值。试验结果表明,该矿区矿岩蠕变试验曲线与理论曲线基本吻合,Burgers蠕变模型能较好的描述岩石的蠕变特性。A mine is characterized with high crustal stress,cracked ore-rock,overgrown joint and remarkable rheological characteristic.And the huge mining difficulty is bringing lots of enormous challenges to the natural production and the engineering safety.Therefore,the study on creep rule of the ore-rock at the mining region is an important base work.For this reason,according to some given requirements and actual sampling specimens,a set of creep experiments was done to study the rheological characteristic of flabby and intricate ore-rock at the mine.Based on scientific analysis and compared study,Burgers creep model was adopted to reflect the characteristic of rock creep.And some programs about Burgers model were developed to deal with the testing data.The creep characteristic curves were obtained,and the model parameters were fitted and the values were gotten through weighted mean.The testing results show that the creep testing curves of the ore-rock of the mine are coincident well with the theoretic curves,which validates the Burgers creep model is felicitous to characterized the creep of the ore-rock.

关 键 词：蠕变 黏滞系数 BURGERS模型 伺服控制 参数拟合 

分 类 号：TU458[建筑科学—岩土工程]