Studies of stationary supporting zone sizes varied in the course of mining operations in deep horizons

This article presents theoretical findings on changing with time of stationary supporting zone length towards deep into the rock mass. The result obtained are compared with results of instrumental and visual monitoring of seams k 5 1 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429227844/40b7a07c-ec3b-45ef-9702-f811a0d2466e/content/inq_chapter13_71_1.tif"/> and k ₆ the Krasnyy Partyzan Mine, where depth of mining exceeds 1000 m.