断层防水煤柱的合理宽度设计

断层防水煤柱的合理宽度设计

院别理学院

专业工程力学

指导教师张嘉凡

评阅教师

班级2008级

姓名代陆

学号0801010108

西安科技大学

二零一二年

论文编号：

论文题目：断层防水煤柱的合理宽度设计

专业：工程力学

学生：代陆

指导教师：张嘉凡

摘要

透水作为煤矿井下的五大自然灾害之一，对煤矿的安全生产有着极大的危害。根据大量的统计资料表明，79.5%的矿井突水都与断层有关，防水煤柱的留设作为矿井水灾预防的主要手段，其宽度的合理设计对于矿井的安全生产有着极其重要的意义。本文对于防水煤柱的宽度设计，将其分为矿压影响区，有效隔水区以及断层影响区三个部分，分别进行宽度计算公式的推导并分别计算，较之原来的方法，多考虑了矿压影响带对于防水煤柱的影响，使其更加合理，更加安全。

关键词：断层；防水煤柱；矿压影响；屈服区；有效隔水区；断层影响

No. ：

Subject ：Reasonable width of the fault waterproof pillar design Specialty ： The Mechanics of Engineering

Name ： Dai Lu

Instructor：Zhang Jiafan

ABSTRACT：

As one of the five natural disasters in the coal mine,penetration have a great harm to coal mine production safety.According to a large number of statistics,79.5% of the mine water inrush have contacts with fault.Waterproof coal pillars is a primary means of mine flood prevention,the rational design of the waterproof coal pillars' width has great significance for mine safety production.In this article, the waterproof coal pillar width design will be divided into mine pressure affected zone,effective impermeable area and the fault-affected

zone.Deduced and calculate the width of the formula Pared with the original method,Give more consideration to the influence of mine pressure affected zone on waterproof pillar,make it more reasonable and more secure.

Keywords:fault; waterproof pillar; mine pressure affected; yield zone; effective confining District; fault affected zone

目录

目录 (1)

第一章绪论............................................................................................................ - 1 -

1.1国外防水煤柱宽度设计的现状.................................................................... - 2 -

1.2国内防水煤柱宽度设计的现状.................................................................... - 5 -

1.2.1大板裂隙理论[4] ............................................................................... - 5 -

1.2.2极限平衡理论[4] ............................................................................... - 6 - 第二章防水煤柱区域的划分................................................................................. - 10 -

2.1矿压影响区............................................................................................... - 10 -

2.2断层影响区............................................................................................... - 11 -

2.3有效隔水区............................................................................................... - 11 - 第三章矿压影响区煤柱宽度的计算 ...................................................................... - 13 -

3.1地板破坏区最大深度及其位置的计算 ....................................................... - 13 -

3.2当断层倾角较小时矿压影响区煤柱宽度的计算......................................... - 14 -

3.3当断层倾角较大时矿压影响区煤柱宽度的计算......................................... - 16 -

3.4建立力学模型求解屈服区的宽度 .............................................................. - 17 -

3.5煤柱极限强度的确定 ................................................................................ - 22 - 第四章有效隔水区的宽度计算 ............................................................................. - 23 -

4.1有效隔水区的宽度计算............................................................................. - 23 -