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Coal mining output calculation method

A calculation method and the technology of coal mining machines, which are applied to measuring devices, mining equipment, earthwork drilling and mining, etc., can solve problems such as lag, and achieve the effect of overcoming lag and submitting calculation accuracy

Active Publication Date: 2018-09-04
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method has high precision, its disadvantage is that the coal production can only be calculated after the coal is loaded on the loader or on the well, and there is a lag. However, the actual production is faced with the problem of calculating the real-time coal production to fully mechanized face mining. The control of coal progress and the need to estimate the real-time load of the scraper conveyor for speed regulation
In addition, in the production of some coal mines, in order to more accurately calculate the workload of coal mines, there is also a need for segmented calculations, or for calculating the actual mining volume by region, and the methods in the prior art cannot meet the above requirements

Method used

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Embodiment 1

[0030] The present invention proposes a calculation method for a fully-mechanized mining face, the basic principle of which is: by calculating the volume V of each cutter on the fully-mechanized mining face, the average density ρ of the coal seam cut by the fully-mechanized mining face is Relatively fixed and easy to measure, multiply the coal seam density by the volume to get the coal mining volume p per knife, and sum the coal mining volume p per knife to get the total coal mining volume P.

[0031] The volume V of each cutter on the fully mechanized mining face is the bottom area S of each cutter multiplied by the height H′. In the coal seam, each cutter is driven by the hydraulic support, so each cutter cuts The bottom surface of the coal seam is approximately rectangular, and the width W of the fully mechanized mining face is fixed, and the depth D cut by each knife is a set value, so the D cut by each knife is also fixed.

[0032] The height of the coal seam may vary on ...

Embodiment 2

[0039] In another embodiment, considering that the degree of undulation of the coal mine measurement is different, in order to calculate the workload more accurately, the volume of coal mined per knife is calculated in a differentiated and segmented manner. Firstly, the height measuring sensor is used to measure the height corresponding to the coal seam to be mined, and the number of hydraulic supports installed on the above height measuring sensor is relatively large compared to the interval supports. Then, select the hydraulic support installed with the height measuring sensor corresponding to the large difference in the above data, indicating that the coal seam height has undergone a large change between the two hydraulic supports, and open the other installations between the above two hydraulic supports. The altimeter sensor is used for measurement and calculation. That is to say, when calculating the volume of the cut coal seam, it is first divided into several sections w...

Embodiment 3

[0052] Accompanying drawing 2 schematically shows a certain problem faced in the height measurement of the current hydraulic support: that is, when the working face of the fully mechanized mining face must adopt the down mining and upward mining technology due to the undulation of the coal seam, the angle of the support often has a large deviation. Laser ranging method and other methods, such as gravity measurement method, hydraulic measurement method, inclination measurement method, etc., measure the distance between the hydraulic support and the vertical plane, that is, the vertical height L, or other methods measured by some height measurement methods. The height is between the vertical height L and the actual height H from the base of the hydraulic support, and there is a deviation from the vertical distance between the hydraulic support and the base. When estimating the coal mining volume or other calculations based on the coal mining height, use The parameter of should be...

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Abstract

The invention discloses a coal mining output calculation method. The method comprises the steps of mounting a height measurement sensor on brackets of a working face or a plurality of hydraulic brackets at intervals; detecting a height Hi of the working face at the abovementioned hydraulic brackets; cutting a web depth D and a working face width W of each shovel of coal by use of a coal cutter; calculating an actual cutting volume of the working face and thereby calculating the coal output of each shovel of the working face so as to calculate a coal mining output of a fully mechanized workingface sectionally in real time.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a method for calculating coal mining volume during underground mining of coal mines. Background technique [0002] When mining underground coal mines, the calculation of coal mining volume is an important calculation parameter. At present, the commonly used method is to detect the amount of coal on the loader by weighing or scanning the amount of coal on the loader, or to calculate the total amount of coal mined after it is transported to the well. Although this method has high precision, its disadvantage is that the coal production can only be calculated after the coal is loaded on the loader or on the well, and there is a lag. However, the actual production is faced with the problem of calculating the real-time coal production to fully mechanized face mining. The control of coal progress and the need to estimate the real-time load of the scraper conveyor for speed regulation. In ad...

Claims

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Application Information

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IPC IPC(8): G06F17/18E21D23/16E21C25/06G01B21/02
CPCG06F17/18E21C25/06E21D23/16G01B21/02
Inventor 李森李首滨赵文生高思伟张守祥林恩强付振冯银辉曹贯强
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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