套孔应力解除法在良山铁矿的应用

Application on Technology of Stress Relief by Overcoring in Liang Shan Iron Mine

为了优化良山铁矿地下开采过程中合理的开采顺序和采矿方法,地应力测量必不可少。本文着重介绍了套孔应力解除法中空心包体应变计的相关测试原理和方法,并通过新余良山铁矿地应力测量及对测量数据进行分析,初步得到了该矿的地应力分布规律。

In order to optimize the Mining Sequence and mining method in underground mining process of Liang shan iron mine,it＇s essential to measure crustal stress.The relevant testing principle and the method of hollow inclusion strain cells in the stress relaxatio method of borehole stress gages are introduced in the article with the measurement of crustal stress.Through analyzing the crustal stress of Xinyu Liangshan Iron Mine and the survey data,we preliminary obtain the regulations distribution of crustal stress of the mine.