SU1150367A1 - Method of mining thick gently-sloping coal seams - Google Patents

Abstract

WAY OF DEVELOPMENT OF SMALL-SUSTAINED COAL STRAYS, including the restoration of the short section of the window with rifled workings, excavation of the installation layer with a long clearing face with laying of the interlayer flexible overlap and coal extraction under the overlap of the mechanized complex with the release of the interlayer layer layer and the extraction of the coal under the overlap layer by the mechanized systems with the layer of the layer body layer and the layer of the layer under the layer of the layer, the layer is applied. coal reserves, excavation of the installation layer and coal excavation under flexible overlap are carried out horizontally across the strike of the formation and on paired lavas, with sloping lava placed at the roof of the reservoir during excavation, when excavating coal under flexible overlap, inclined lava is located near the reservoir soil, and the release of coal from the interlayer thickness is effected by weakening the last of the intermediate drifts that lead ahead of the mining faces and parallel to them. O1 o sood od

Description

f The invention relates to the mining industry and is intended for the development of thick flat coal seams. There is a method of developing powerful sloping coal seams ClJ. The known method of developing powerful flat coal seams, including horizontal preparation of short pillars, tapped # 1 and workings, excavation of the installation site with a long face with laying of interlayer flexible overlap and excavation of coal under flexible overlap of mechanized complexes with the release of coal interlayer thickness. However, the known methods are characterized by insufficient coal extraction, the purpose of the invention is to ensure the complete extraction of coal reserves. The goal is achieved by the fact that according to the method of development of thick flat coal seams, including the construction of short pillars of short pillars in tapped workings, the excavation of the assembly layer is long with clean bottom with laying of interlayer flexible overlap and excavation with under-flexible overlap by means of the wedge of the exhaust beam and the excavation of the sub-flexible overlap by means of the wedge of the block and the outlet under the flexible overlap by means of the body under the exhaust beam. the excavation of the installation layer and the coal excavation under flexible transverse is carried out horizontally located across the strike of the formation and inclined sparenkivy lavas In the case of the assembly layer, inclined lava is placed at the roof 67 of the formation, when excavating coal under flexible overlap, inclined lava is located near the soil of the formation, and the release of coal from the interlayer thickness is effected by weakening the last of the intermediate drifts. Which lead ahead, cleaning faces and parallel to them. The method is stemmed as follows. The mighty shallow layer is cut by workings along the system of short pillars. At the same time, drifts are conducted at the roof, in the middle part and at the soil of the formation along its strike, forming the horizon. Drifts knock each other through 25-30 m orts. To work out the remaining coal reserves, an assembly layer is initially prepared, which consists of paired horizontal and inclined lavas, with the sloping lava located at the top of the seam. Then, a flexible overlap is laid. Coal extraction under flexible overlap is also performed by paired lavas, one of which, namely the inclined one, is positioned near the soil of the formation. Vtusk coal interlayer thickness is carried out by weakening the last of the intermediate drifts, which are held ahead of the working faces and parallel to them. The weakening of the interlayer sequence is carried out by one of the known methods. The invention makes it possible to significantly increase the completeness of coal extraction.

Claims (1)

METHOD FOR THE DEVELOPMENT OF POWERFUL FLATSHIP COAL LAYERS, including pogorionny preparation of short columns with threaded workings, excavation of the installation layer with a long treatment face with a layering of an interlayer flexible overlap and coal excavation under a flexible overlap with mechanized complexes with the release of coal of interlayer thickness, with the aim of distinguishing that coal reserves, the excavation of the mounting layer and the extraction of coal under a flexible overlap is carried out horizontally located across the strike of the formation and inclined sp arena lavas, moreover, when excavating the installation layer, the inclined lava is located at the top of the formation, while excavation of coal under a flexible overlap, the inclined lava is located at the bottom of the formation, * and the inter-layer strata is released by weakening the last of the intermediate drifts that are carried out in front of the treatment faces and parallel to them . SU „1150367