Advances in Civil Engineering

Research Article

Influence of Upper Seam Extraction on Abutment Pressure Distribution during Lower Seam Extraction in Deep Mining

Table 2

Influence distance of advanced abutment pressure under the influence of key strata 1 and 2.
No.Distance to No. 9 seam (m)Thickness (m)Influence distance of the advanced abutment pressure (m)
Key stratum 18.4914.5747.1
Key stratum 247.265.3969.7