Calculation method for directly measuring loss amount of coal seam methane content

A technology for coal seam gas and loss, which is applied in the field of direct determination of coal seam gas content and loss calculation, can solve the problems of improving the calculation accuracy of coal seam gas content loss, and achieves the effects of high accuracy and simple calculation model.

Active Publication Date: 2019-03-01
XIAN UNIV OF SCI & TECH
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Problems solved by technology

Coal seam gas drainage compliance, coal and gas outburst prevention and control are closely related to coal seam gas. The accuracy of coal seam gas measurement directly affects the succession of mine excavation, prevention and control works, and disaster occurrence. There have been many achievements in the development of gas content measurement, but the coal seam The calculation accuracy of gas content loss still needs to be improved

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  • Calculation method for directly measuring loss amount of coal seam methane content

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0019] For the method provided by the embodiments of the present invention, see figure 1 ,Such as figure 1 shown, including the following steps:

[0020] 1. A coal seam gas content direct measurement loss calculation method, comprising the following steps:

[0021] S1: Determine the gas exposure loss time of the coal seam based on the coal sample technology adopted on site, and adopt the coal sample technology for drilling cores. The gas loss time of the...

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Abstract

The invention discloses a calculation method for directly measuring the loss amount of the coal seam methane content. In order to solve the problem of inaccurate measurement of the coal seam methane content, a coal sample technology, a coal seam methane adsorption and desorption rule and a coal seam sampling form are adopted, and a least square method is adopted for directly measuring the loss amount of the coal seam methane content. According to the calculation method, the calculation model is simple, and the measurement result precision is greatly improved.

Description

technical field [0001] The invention relates to the field of coal mine gas prevention and control, in particular to a method for directly measuring the loss amount of coal seam gas content. Background technique [0002] From the perspective of energy demand, my country's coal-based energy structure will not change in a short period of time, the proportion of coal will remain at about 50% for a long time, and about 95% of coal mining is dominated by underground mining. At present, coal mining extends to the deep at a rate of 10-20m per year, and gas disasters will become more and more serious. Coal seam gas drainage compliance, coal and gas outburst prevention and control are closely related to coal seam gas. The accuracy of coal seam gas measurement directly affects the succession of mine excavation, prevention and control works, and disaster occurrence. There have been many achievements in the development of gas content measurement, but the coal seam The calculation accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22
CPCG01N33/222
Inventor 董国伟
Owner XIAN UNIV OF SCI & TECH
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