首页 | 本学科首页   官方微博 | 高级检索  
     检索      

煤层气洞穴完井顶板塌落数值模拟研究
引用本文:艾传志,杨虎,王芝银.煤层气洞穴完井顶板塌落数值模拟研究[J].湖南科技大学学报(自然科学版),2008,23(2):5-8.
作者姓名:艾传志  杨虎  王芝银
作者单位:1. 中国石油大学(北京)城市油气输配技术北京市重点实验室,北京,102249
2. 新疆油田公司,勘探开发研究院,新疆,克拉玛依,824000
基金项目:教育部创新团队研究项目
摘    要:针对我国主要煤层气产区的煤层埋深、煤层厚度、煤层及顶板岩石力学特性,对不同埋深和煤层厚度条件下的裸眼洞穴使用有限差分方法进行了数值模拟.计算结果表明,造成洞穴顶板塌落的主要力学因素是垂直地应力与水平地应力之差,可由侧压系数来描述;顶板破坏形式为洞周剪切破坏;煤层厚度对其影响较小.

关 键 词:煤层气  洞穴完井  数值模拟  塌落

Numerical Simulation of the Roof Fall on Open-hole Cavity Completed Coal-bed Gas Wells
AI Chuan-zhi,YANG Hu,WANG Zhi-yin.Numerical Simulation of the Roof Fall on Open-hole Cavity Completed Coal-bed Gas Wells[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2008,23(2):5-8.
Authors:AI Chuan-zhi  YANG Hu  WANG Zhi-yin
Abstract:In view of the coal bed depth of burial, thickness of coal layer, mechanical characteristics of the coal layer rock and the roof rock, the open-hole caves with different buried depth and different coal layer thickness was simulated with the finite difference method. The results show that the fall of the roof depends on the difference of the vertical initial stress and the horizontal initial stress,which can be described by the reciprocal of the lateral compression coefficient, the damage form of roof is shear failure at the cave edge, the thickness of coal layer has little influence on it.
Keywords:coal-bed gas  open-hole cavity completion  numerical simulation  roof fall
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号