In order to identify aquifer parameter, authors develops an improved combinatonal method called best chromosome clone plus younger generation chromosome prepote
In this paper, an expert decision-making system of technology reformation schemes of a colliery (for short EDSTRC) is researched by comprehensively using ES and
The paper introduces a kind of full-length recoverable resin-metal bolts, expounds its structural principle and stress features, and gives some instances in lab
The deposit scale in the coal mine shaft usually causes serious accidents, such as making rope broken, cage seized or dropped. To solve this kind of problems, t
By field observation and simulating test in shallow seam Iongwall mining, the asymmetry breaking of main roof is discovered during the first weighting. Based on