Improvement of deep high stress laneway support based on fuzzy gray theory

Based on the experiment and measurement, we find that the surrounding rock of Tao Eer expand area in Handan mining group is a kind of compound engineering soft rock .This paper makes use of numerical analysis and the theory of fuzzy gray to evaluate reliability,and cost of support parameter, and get the final supporting scheme. This paper furnishes a new method for the study of the balance of high reliability and low cost of support under the condition of high stress.