文档介绍：辽宁工程技术大学
硕士学位论文
急倾斜煤层开采地表移动时间过程研究
姓名:马利军
申请学位级别:硕士
专业:岩土工程
指导教师:刘书贤
20041115
辽宁工程技术大学硕士学位论文摘要
摘要

地下煤层采出后引起的地表沉陷是一个时间和空间过程煤系地层倾角是决定
上覆岩层的移动和破坏形式及地表移动与变形程度的重要因素之一在以往的研究
中因开采沉陷的孕育和发展过程复杂而无法触及人们将更多的注意力放在岩体
破坏的最终结果而急倾斜煤层开采上覆岩体在水平向的均质性不同其复杂性更
使这类时间过程的研究极不充分这些恰恰不利于开采沉陷的正确预测和防治传
统的连续介质力学和非连续介质力学均具有极端的针对性其缺点之一是进行岩体
的模型抽象简化时将工作面上方的岩体看成是一静止的梁忽略了工作面的推进
变化及覆岩在变形失稳时的性质和载荷的变化得出的剖面方程仅是开采结束后地
表的最终沉陷近似表达式无法得到岩体的动态沉陷过程基于以上认识本文通
过维象实验维理思维模式以理想松散体模型随机介质理论为基础逐步研
究急倾斜煤层开采地表移动规律
本文提出了更具有一般统计意义的采动覆岩与地表下沉概率密度新函数以此
为基础建立了急倾斜煤层开采地表下沉和变形的预计新体系为矿山开采地表下沉
和变形预计提供了新方法

关键词地表移动时间过程理想松散体叠合模型面向对象
辽宁工程技术大学硕士学位论文 Abstract
Abstract
Ground subsidence caused by underground coal mining is a space-time process. Coal
seam pitch is one of the most important factor which determine movement and failure
forms of overlying rock and the level of ground movement and deformation. In the
previous research, because mining subsidence's inoculation and developing process is so
complex that can't touch, people give more attention on final result of rock damage; the
overlying rock of steep coal seam mining have different homogeneousness in horizontal
orientation. It'plexity make the research of this kind of problem's time process is
very inadequate. All of those are disadvantages of mining subsidence's forecast and
prevention. Both traditional continuous medium mechanics and discontinuous medium
mechanics have extreme pertinency, one of it's ings is that when we simplify the
rock model, we look the rock on the working face as a static beam, and ignore impelling
change of the working face and property and load change as the overlying rock is
destabilizing, so the cross-section equation we produced only is a final approximate
subsidence expression, not a dynamic subsidence process of the rock. From these views,
through phenomenon experiment theory thought mode, be based on ideal loose body and
random medium theory, this thesis make study on rule of st