东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (3): 293-296.DOI: -

• 论著 • 上一篇    下一篇

含瓦斯煤岩破裂过程固气耦合数值模拟

徐涛;杨天鸿;唐春安;唐世斌   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-03-15 发布日期:2013-06-24
  • 通讯作者: Xu, T.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50490274;50204003)·

Numerical simulation on coupled solid-gas flow in failure process of gaseous coal and rock

Xu, Tao (1); Yang, Tian-Hong (1); Tang, Chun-An (1); Tang, Shi-Bin (1)   

  1. (1) Sch. of Resources and Civil Eng., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-03-15 Published:2013-06-24
  • Contact: Xu, T.
  • About author:-
  • Supported by:
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摘要： 根据瓦斯渗流与煤体变形的基本理论,并引入煤体变形过程中细观单元损伤与透气性演化的耦合作用方程,建立了含瓦斯煤岩破裂过程固气耦合作用模型·应用该模型模拟研究了煤矿开采诱发的煤与瓦斯突出过程、突出前后煤体中瓦斯压力的变化规律以及采动影响下瓦斯抽放过程中煤层透气性的演化和抽放孔周围瓦斯压力的变化规律,这对于进一步深入理解煤与瓦斯突出机理、瓦斯抽放作用机制等并采取相应的预防和控制措施等具有重要的理论和实践意义·

关键词: 含瓦斯煤, 破裂过程, 透气性, RFPA系统, 数值模拟

Abstract: Based on the seepage theory of gas flow in coal seams and elastic theory of coal deformation and combining them with the relationship equations between gas permeability and damage, a mathematical model of coupled solid-gas flow in coal and rock formations in the failure process of coal and rock was established. Using the gas pressure incorporated RFPA code, the mining induced instantaneous outbursts, gas pressure changes before and after outbursts, gas drainage and associated characteristics of gas permeability and gas pressure of coal seam during mining were numerically simulated. The results offer some theoretical indications to further investigate the mechanisms of instantaneous outbursts and gas drainage and give some precautions to prevent their occurrences in collieries.

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