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Language:English

Paper Publications

Title of Paper:含断层煤层底板突水通道形成过程的仿真分析

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Date of Publication:2009-02-15

Journal:岩石力学与工程学报

Included Journals:PKU、ISTIC、CSCD、EI、Scopus

Volume:28

Issue:2

Page Number:290-297

ISSN No.:1000-6915

Key Words:工程地质 数值模拟 断层 底板突水 突水通道 承压含水层

Abstract:基于对断层形态、产状要素、力学性质复杂性及断层诱发突水机制的认识,针对承压水上采煤的含断层岩体水力学模型,通过有限元数值仿真再现了含断层煤层开采底板采动裂隙形成、断层活化到突水通道形成的全过程.通过对损伤演化、应力场和渗流场的解读,揭示开采扰动及水压驱动下完整底板由隔水岩层到突水通道的演化机制.数值分析结果显示:断层本身的物理力学性质及断层的产状要素,包括断距和倾角等,对煤层底板的相对安全性都具有重要的影响.最后结合现场地质、水文地质调查及数值仿真结果对一工程实例进行突水机制分析,为承压水上采煤底板突水的机制分析及防治提供一些新的认识.

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