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

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.