Authors: A.V. Remezov, V.O. Torro, Ye.V. Kuznetsov, Klimov

Title of the article: The analysis of manifestation of bearing pressure at the descending order of extraction panels mining in seam Tolmachyovsky

Year: 2017, Issue: 4, Pages: 37-46

Branch of knowledge: Earth sciences

Index UDK: 622.831.1

DOI: 10.26730/1999-4125-2017-4-37-46

Abstract: The increase in output per a coal cutting face and increase in labor productivity in coal industry present an actual task and demand a timely preparation of the replacement cutting faces. For this purpose, it is possible to use a method of keeping the workings adjacent to the coal cutting face by using remaining coal pillars. Also, timely re-installation of the mining equipment from the completed extraction panel face to a new face is to a great extent ensured by a right choice of the place for the dismantling chamber. As a rule, the estimated stop line of the coal face for dismantling does not coincide with objectively stipulated. Therefore, in order to identify the actual stop line of the coal face for dismantling, it is required to conduct field studies in the coal face and to determine the real main roof caving increment. The article reviews the results of the first stage of the studies aimed at the following: 1. Study the reasons influencing the condition of the protected workings that is directly connected with decrease in costs for timely preparation of replacement faces, increase in output per coal face, decrease in production cost of the extracted coal; 2. Determine the parameters of the protective coal pillar left between extraction panels with various depth of development; 3. Develop measures aimed at decreasing the adverse impact of rock pressure on the maintained workings; 4. Identify the real main roof caving increment by conducting field studies in order to make a proper choice of the place for the dismantling chamber.

Key words: a coal cutting face the replacement coal faces protective pillar a zone of the increased rock pressure convergence mining and geological conditions rib spalling a roof subsidence floor soil swelling parameters of rock pressure telltale stations face moving the place of the dismantling chamber the features of roof enclosing strata a hypothesis of beams a caving increment

CITE DOWNLOAD