摘要
重庆天府三汇一矿位于华蓥山帚状褶皱带的收敛端,属地应力相对集中地带,矿区的煤与瓦斯突出不但发生的次数多,突出强度也大,且正在开采的煤层均属突出煤层,对该区域原始应力场的三维分布规律研究可为矿井生产设计及煤与瓦斯突出危险性区域预测提供参考依据。在收集三汇一矿地质资料的基础上,建立起三维有限元计算模型,利用ANSYS大型通用有限元软件采用弹塑性有限元法对该矿初始地应力场进行数值模拟。根据模拟结果,分析了三汇一矿地应力场的三维分布特征,并对K煤层的地应力分布进行了分析。
Tianfu Sanhui No.1 mine of Chongqing is located in the convergent extreme of Huayingshan scopulate fold belt, which is an area of in-situ stresses concentration. Coal and gas outburst occurred not only frequently, but also high-intensity, and the working seams are all outburst seams, so the research of its three-dimensional initial in-situ stresses field can put forward the suggestion on the production design of coal mine and the prediction of coal and gas outbursts. Based on the geological materials about Sanhui No.1 mine, this paper developes the 3D FEM model, and uses the elastoplastic finite element method and ANSYS program in numerical simulation of the initial in-situ stresses field. Based on the simulation results, it analyzes the characters of the in-situ stresses of Sanhui No.1 mine and K_1 coal seam.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第5期105-113,共9页
Journal of Chongqing University
基金
国家自然科学基金资助项目(50974141)
国家科技重大专项项目(2008ZX05034-002)
重庆市科技攻关计划重大项目(2006AA7002)
关键词
采矿工程
煤矿
地应力
数值模拟
分布特征
mining engineering
coal mine
in-situ stresses
numerical simulation
distribution characteristics
