深煤层弱固结面与水力裂缝相交扩展规律研究.docx

深煤层弱固结面与水力裂缝相交扩展规律研究

目录

1.内容简述................................................2

1.1研究背景.............................................2

1.2研究意义.............................................3

1.3国内外研究现状.......................................4

2.研究方法与理论..........................................6

2.1研究方法.............................................7

2.1.1实验研究.........................................7

2.1.2数值模拟.........................................8

2.1.3理论分析........................................10

2.2理论基础............................................11

2.2.1岩石力学基础....................................12

2.2.2水力学原理......................................14

2.2.3裂缝扩展理论....................................15

3.深煤层弱固结面特性分析.................................17

3.1弱固结面岩性特征....................................18

3.2弱固结面力学性质....................................19

3.3弱固结面渗透性分析..................................21

4.水力裂缝扩展规律研究...................................22

4.1水力裂缝形成机理....................................23

4.2水力裂缝扩展影响因素................................24

4.2.1岩石力学性质....................................26

4.2.2水力条件........................................27

4.2.3开采条件........................................28

4.3水力裂缝扩展模型建立................................29

5.深煤层弱固结面与水力裂缝相交扩展规律...................31

5.1相交扩展机理分析....................................32

5.2相交扩展规律研究....................................34

5.2.1裂缝扩展速度....................................35

5.2.2裂缝扩展路径....................................37

5.2.3裂缝扩展范围....................................37

5.3实例分析............................................39

6.防治措施与建议.........................................40

6.1优化采动工艺........................................41

6.2控制水力裂缝发育....................................42

6.3强化监测预警........................................43

1.内容简述

本文针对深煤层弱固结面与水力裂缝相交扩展规律这一关键地质问题进行研究。首先，通过对深煤层地质特征的分析，阐述了弱固结面的形成机制及其对