A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine

A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine

Based on the dynamic expressions of permeability and porosity of the coal seam derived in the paper, a multiphysical field coupling numerical model of gas migration under the interaction of stress field and seepage field was established. The gas drainage project #3 Coal Seam operated by Sima Coal In...

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Main Authors: Ming Ji, Zhong-guang Sun, Wei Sun
Format: Article
Language:English
Published: Hindawi-Wiley 2021-01-01
Series:Geofluids
Online Access:http://dx.doi.org/10.1155/2021/5510566
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spelling doaj-38c8bfff34be474f93ed468bfff77d6d2021-09-20T00:30:15ZengHindawi-WileyGeofluids1468-81232021-01-01202110.1155/2021/5510566A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal MineMing Ji0Zhong-guang Sun1Wei Sun2Key Laboratory of Deep Coal Resource MiningState Key Laboratory of The Gas Disaster DetectingChina Coal Technology and Engineering Group Chongqing Research InstituteBased on the dynamic expressions of permeability and porosity of the coal seam derived in the paper, a multiphysical field coupling numerical model of gas migration under the interaction of stress field and seepage field was established. The gas drainage project #3 Coal Seam operated by Sima Coal Industry Co., Ltd., was selected as the study object. Taking different drainage time periods in various positions of drainage holes into consideration, combined with the advance situation of the 1207 working face in the Sima Coal Mine, a mixed layout gas drainage scheme featured with the effective borehole spacing was obtained through the COMSOL multiphysics simulation. In addition, a series of field industrial tests were performed to validate the research result, revealing that comprehensively considering the extraction time of coal and optimizing the layout of extraction boreholes can effectively improve the engineering economic benefits.http://dx.doi.org/10.1155/2021/5510566
collection DOAJ
language English
format Article
sources DOAJ
author Ming Ji
Zhong-guang Sun
Wei Sun
spellingShingle Ming Ji
Zhong-guang Sun
Wei Sun
A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
Geofluids
author_facet Ming Ji
Zhong-guang Sun
Wei Sun
author_sort Ming Ji
title A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
title_short A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
title_full A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
title_fullStr A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
title_full_unstemmed A Case Study on the Gas Drainage Optimization Based on the Effective Borehole Spacing in Sima Coal Mine
title_sort case study on the gas drainage optimization based on the effective borehole spacing in sima coal mine
publisher Hindawi-Wiley
series Geofluids
issn 1468-8123
publishDate 2021-01-01
description Based on the dynamic expressions of permeability and porosity of the coal seam derived in the paper, a multiphysical field coupling numerical model of gas migration under the interaction of stress field and seepage field was established. The gas drainage project #3 Coal Seam operated by Sima Coal Industry Co., Ltd., was selected as the study object. Taking different drainage time periods in various positions of drainage holes into consideration, combined with the advance situation of the 1207 working face in the Sima Coal Mine, a mixed layout gas drainage scheme featured with the effective borehole spacing was obtained through the COMSOL multiphysics simulation. In addition, a series of field industrial tests were performed to validate the research result, revealing that comprehensively considering the extraction time of coal and optimizing the layout of extraction boreholes can effectively improve the engineering economic benefits.
url http://dx.doi.org/10.1155/2021/5510566
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AT weisun acasestudyonthegasdrainageoptimizationbasedontheeffectiveboreholespacinginsimacoalmine
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AT zhongguangsun casestudyonthegasdrainageoptimizationbasedontheeffectiveboreholespacinginsimacoalmine
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