FIELD: mining.
SUBSTANCE: method of layer mining of a high steeply inclined coal seam with extraction of a bedding pack includes preparation of an extraction pillar by arrangement of conveyor and ventilation drifts, preparation of an extraction strip by performance of coal discharge and ventilation mines from the conveyor to the ventilation drifts, withdrawal of the mounting chamber at the coupling of the extraction strip with the ventilation drift with separation of the bed by capacity into two inclined layers, leaving the bedding pack intact. In the mounting chamber on the soil of each layer they mount sections of the support, and on the soil of the layer near the bed roof - a flexible slab in the form of a net, which covers the bedding pack and the section of the support installed on the soil of the bed. Stripping equipment is represented by sections of aggregated support with an actuator. At the same time the actuator is made in the form of a horizontally aligned drum with teeth. At the goaf side each section is equipped with an additional cutting element for cutting of a weakening slot. Extraction and transportation of the broken coal along the line of the working face is carried out in inclined layers near the roof and the bed soil with auger actuators of aggregated sections of the support. The bedding pack is divided into sections as the working face of the layer is shifted near the bed soil by cutting of weakening slots above each section of the support, is damaged by pressure of collapsed rocks behind the slab and released into the working space of the layer near bed soil in the space between the stands of the support sections. Stands of the support sections are installed on the soil of the bed.
EFFECT: higher efficiency and safety of mining of high steeply inclined coal beds due to using facilities of mechanisation of stripping works of middle seams and organisation of extraction of the coal of a bedding pack at the goaf side of the support into the working space of the layer near the bed soil.
3 dwg
