摘要
煤炭开采沉陷区的较大地表变形(倾斜、水平变形和曲率)会对既有砌体房屋造成倾斜、裂缝或倒塌等破坏。在总结"三下"压煤现状的基础上,根据拟建矿区具体的地质条件和开采条件预估算各种地表变形值,用有限元整体模型思想建立典型多层砌体结构模型,计算砌体结构在拟建矿区开采沉陷导致地表整体倾斜、水平受拉变形和不均匀沉降工况下的墙体受力情况,并与在正常工作状态下的墙体受力情况相比较,定量分析圈梁和构造柱的设置与否及截面尺寸的变化对各种变形工况下墙体应力的影响,根据分析结果,总结构造措施对地表变形下砌体结构的影响规律。
The biggish surface deformation of subsidence area of coal mining （inclination, horizontal deformation and curvature） will destroy the existing masonry buildings, such as inclination, crack and collapse,etc. On the basis of summarizing the current situation of coal under the ＂three＂, estimate all kinds of surface deformation value according to the concrete geologic conditions and mining conditions of the proposed mine lot. Establish typical multistory masonry structure by using the ideology of finite element whole model. Calculate the force conditions of the masonry structure＇s wall in the situation of surficial whole inclination,horizontal and tensile deformation, differential settlement caused by mining subsidence in the proposed mine lot. Compare to the force conditions of the wall in normal work condition. Make quantitative analysis on the influence to wall stress under various deformation conditions which caused by setting ring beam and constructional column or not and transformation of sectional dimension. Summarize the influence law on masonry structure under surface deformation caused by construction measure in accordance with analysis results.
出处
《中国矿业》
北大核心
2012年第9期106-110,共5页
China Mining Magazine
基金
中央高校基本科研业务费专项资金资助(编号:12CX06078A)
关键词
煤矿采空区
砌体结构
地表变形
构造措施
墙体应力
ANSYS
goal of coal mine
masonry structure
surface deformation
construction measure
wall stress
ANSYS
