RU2029088C1 - Method for mining thick steeply dipping coal seams and device for its realization - Google Patents

Abstract

FIELD: mining. SUBSTANCE: extraction of seam is started from advance extraction of undercutting layer in each odd sublevel by plough-conveyor through step of advance of support unit. Coal is conveyed hydraulically. After extraction of undercutting layer, laid on its floor is flexible roofing and support unit is advanced through one step. Top is separated by hydraulic breaking for step of support unit advance under flexible roofing of overlying sublevel. Complex for realization of method has machine for interweaving and laying of flexible roofing in front of complex. Complex sections are installed on flexible roofing for motion over it. Extracting unit from face part of complex is made in form of plough-conveyor, and from the caving side, in form of hydraulic giant. Means for coal transportation are made in form of conveyor gallery to pass water-coal pulp. Hydraulic giant is located on water-coal pulp gallery. EFFECT: higher efficiency. 2 cl, 5 dwg

Description

 The invention relates to the mining industry and can be used in the development of powerful steep and steeply inclined coal seams.

 There is a method of developing powerful steep coal seams, in which coal is mined in the layer along the entire thickness of the seam with a hydraulic monitor installed under the protection of sectional overlap on the guide [1].

 The disadvantage of this method is significant loss of coal.

 There is a method of developing coal seams, including a mining unit with a machine for weaving overlapping stripes, mining coal, laying flexible flooring and moving sectional flooring during coal mining [2].

 The disadvantages of the method are significant losses of coal, reducing the safety of work.

 There is a method of developing powerful steep coal seams, in which the hydraulic monitor has the ability to move along the bottom along the guide, which is a transport communication [3].

 The disadvantages of the method is the low load on the face, reducing the safety of work.

 The conducted patent studies show that neither in the patent nor in the scientific and technical literature there is information about the methods for developing powerful steep and steeply inclined coal seams and devices for its implementation in hydraulic production, which would have the same inventive step as the inventive method and device for its implementation.

 Thus, the conclusion is correct that the proposed method and device for its implementation meets the criteria of the invention of "novelty." A comparative analysis of the proposed solution in comparison with the prototype allows to identify the following inventive step: the layer is worked out by floors, the leading recess of the undercut layer is carried out in each odd sub-floor by a conveyor belt per step of moving the lining sections; Coal delivery is carried out by hydraulic washing, followed by the extraction of the undercutting layer, flexible overlap is laid on its soil and the lining sections are moved to the step of moving; separation of the ceiling is carried out by hydraulic breaking to the step of moving the lining sections under the flexible overlap of the overlying sub-floor; the complex is equipped with a binding and stacking machine for flexible cover strips with the possibility of laying it in front of the complex; sections of the complex are mounted on a flexible ceiling with the ability to move along it; the extraction unit from the downhole side of the complex is made with a conveyor belt, and from the obstruction side with a hydraulic installation; the means of transport are made by galleries for moving the water-coal pulp, and the hydromonitor unit is placed on the gallery of the water-coal pulp.

 In FIG. 1 shows a horizontal projection of the preparation and excavation of sub-floors; figure 2 is a section aa in figure 1; figure 3 is a section bB in figure 1; in FIG. 4 - the position of the device in the bottom of the mounting-excavation layer; figure 5 - section bb in figure 4.

 Preparation for the extraction of coal and the erection of a flexible overlap consists in carrying out slopes - field 1, ventilation 2, pulp furnace 3, industrial sludge 4, sub-floor drifts at the lying 6 and 7 hanging side of the formation. The device 8 is mounted in a horizontal layer 9 in each odd sub-floor. The structure of the device 8 includes sections of a powered roof support 10 with a dismantled enclosing ceiling, a conveyor belt 11, a binding machine and laying strips of flexible floors 12, a hydraulic installation 13, means of transport made by galleries 14 to move a water-coal pulp and place a hydraulic monitor 13 in them.

 The method is as follows.

 First, a leading cut-out of the undercut layer 15 is carried out in each odd sub-floor by the conveyor belt 11 to the step of moving the support sections 10 using the moving means 16. The coal is delivered by hydraulic washing, then after cutting the undercut layer 15, flexible cover 17 is laid onto its soil 12 in front of the complex. After that, the lining sections are moved to the step of moving using the means of moving 16. After the lining of the lining sections 10, the ceiling 18 is separated by the hydromonitor unit 13 by the step of moving the lining sections 10 under the flexible overlap 19 of the overlying sub-floor, and the water-carbon pulp moves through the galleries 14, then along pulp furnace 3 - to the accumulating drift, hydraulic jack, pumping station and along the trunk to the surface. The described procedure for the operation of the device and the method of coal extraction make it possible to increase the load on the face, reduce the complexity of the work and the loss of coal, and improve the safety conditions.

Claims (3)

 METHOD FOR THE DEVELOPMENT OF POWERFUL STEEL AND STEEL-INCLINED COAL STRESSES AND A DEVICE FOR ITS IMPLEMENTATION.  1. A method of developing powerful steep and steeply inclined coal seams, including outlining the excavation field with openings, leading the notch of the undercutting layer, then separating the ceiling under the protection of the support sections of the undercutting layer, releasing and delivering coal along the working face, characterized in that the formation is worked out by subfloors, ahead of the notch a cutting layer is carried out in each odd sub-floor by a conveyor with a step to move the lining sections, while the coal is delivered by hydraulic washing, followed by a cut of the cutting layer on e The soil is laid on a flexible ceiling and the lining sections are moved by a step of moving, and the ceilings are separated by hydroblowing on the step of moving the lining sections under a flexible overlap of the overlying floor.  2. A device for the development of powerful steep and steeply inclined coal seams, including a mechanized complex, sections of which are equipped with extraction units for working off the undercut layer and the ceiling, means of transport of broken coal in the undercut layer and the ceiling, mechanisms for spreading and moving the extraction units through transport communications, characterized in that the complex is equipped with a machine for binding and laying of flexible overlap strips with the possibility of laying it in front of the complex, sections of the complex are installed on a flexible overlap and with the possibility of moving along it, the extraction unit from the downhole side of the complex is made with a conveyor belt, and from the obstruction side with a hydraulic monitor, and the means of transport are made by galleries to move the water-coal pulp, and the hydraulic monitor is placed on the gallery of the water-coal pulp.

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