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Method for controlling longwall mining operations

A longwall, operation technology, applied in mining equipment, earthwork drilling, cutting machinery, etc., can solve problems such as damage to intentional operating mechanisms during operation

Active Publication Date: 2011-02-09
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When automating the longwall control, the problem also arises of having a sufficient height perpendicular to the bed (bankrecht) (i.e. sufficient face opening) in the area in front of the top beam of each shield frame to Make sure that the shearer passes by without trouble, because any collision between the shearer and the top beam of the shield support frame will cause damage to the corresponding operating intention or working mechanism due to the small opening of the working face

Method used

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  • Method for controlling longwall mining operations
  • Method for controlling longwall mining operations
  • Method for controlling longwall mining operations

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Embodiment Construction

[0033] figure 1 The shown longwall installation (Strebausrüstung) firstly comprises a cover support frame 10 with a bottom carriage (Bodenkufe) 11, on which two struts 12 are arranged in a parallel configuration, on which figure 1 Only one support can be seen in FIG. 2 and this supports a top beam (Hangenkappe) 13 at its upper end. At its front end (left) the head beam 13 protrudes in the direction of the still-described shearer, while a goaf shield (Bruchschild) 14 is hinged to the rear end (right) of the head beam 13 by means of a hinge 15 , wherein the goaf shield frame is supported by two support guide rods 16, and the two support guide rods 16 are arranged on the bottom sliding frame 11 in a side view. In the illustrated embodiment, three inclination sensors 17 are provided on the shield support frame 10, namely the inclination sensor 17 on the bottom carriage 11, the inclination sensor 17 near the hinge 15 in the rear area of ​​the top beam 13, the inclination sensor 17...

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Abstract

Disclosed is a method for controlling longwall coal mining operations comprising a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support. In said method, the inclination of the shield components relative to the horizontal line in the direction of advance is determined by means of inclination sensors (17) mounted on at least three of the four main components of each shield support frame (10), such as the floor skid (11), the gob shield (14), the supporting connection rods (16), and in the gob zone of the top canopy (13), and the height (h1) of the shield support frame (10) perpendicular to the bed at the forward end of the top canopy (13) is calculated as a measure of the face opening (30) from the measured data in a computer unit by comparing said measured data with the basic data that is stored in the computer unit and defines the geometrical orientation of the components and the movement thereof during the advance.

Description

technical field [0001] The present invention relates to a method of controlling a longwall mining operation in underground coal mining, the longwall mining operation comprising a face conveyor, at least one shearer and hydraulic shield supports. Background technique [0002] When controlling longwall mining operations during recovery, it generally means making the best possible use of the available machine capacity while avoiding downtime, wherein the necessary control processes should be automated as far as possible to avoid human error Decide. The use of controlled automation is under development or is already in use, such as inductively identifying / controlling boundary layers, learning step methods, identifying and controlling the return stroke of stepping supports, automatic stepping of stepping supports and maintaining them automatically The predetermined nominal inclination of the face conveyor. [0003] When automating the longwall control, the problem also arises o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C25/56E21D23/00
CPCE21C35/12E21D23/12
Inventor M·容克尔A·莫扎尔
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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