Abstract: Based on two double coal streak which the distance between two layers is closer in the immediate roof of 4104 fully mechanized working face of Chuancaogedan Coal Mine, the section to expose roadway is too large and the two sides are weak, which result in the tri-layer composite rock plate and the cohesion between the tri-layer is almost zero. The threat of collapse and roof falling is so severe to the status of serious influence of the dynamic pressure. By the means of field evaluation and investigation of the same kind of mine, come to the conclusion of researching on bolt-mesh-anchor support technology by the means of numerical simulation, which will be used in the basic support on the coal face gateway, in the open-off cuts and in the equipment remove gateway. Research concludes that roof abscission layer indicator’s monitoring shows that the maximal displacement of 23.7 mm is 150m before stop line, the cost of maintenance and ending reduced 25%, the scheme has accomplished the ends with high efficient and and offered the referenced judgment of the engineering analogy.