The Contraption and Engineering Implementation of Linked Fracture of Shoal Suture in the Bedrock

Abstract

The characteristics of overburden strata structural features of typical shallow seam with thin bedrock in Shandong mining area is: there is only one key stratum which controls the overburden strata movement (main roof), when the thickness of bedrock is smaller (generally less than 50-60 m) and the key stratum located under the fissure zone or inside the caving zone through the analysis combined geological data Shandong mining area with the experience in mining practice for a long time. Strata behavior is comparatively fiercer in mining process and it’s easy to lose phreatic water and surface water resource