基于突变理论的采空塌陷区输气管道危险性评价研究

发布时间：2018-01-13 16:16

本文关键词：基于突变理论的采空塌陷区输气管道危险性评价研究　出处：《中国安全生产科学技术》2017年01期 　论文类型：期刊论文

【摘要】：为了减少采空塌陷区输气管道危险性评价中对主观判断的依赖,提出以突变理论为基础的危险性评价模型。首先,从采矿因素、岩体物理力学参数、环境与地质因素和埋地管道因素等4个方面分析采空塌陷区输气管道危险性影响因素;其次,建立采空塌陷区输气管道危险性指标体系;然后,对指标体系中的底层指标进行无量纲化和归一化处理;最后,计算得到输气管道危险性突变数值,进而实现对采空塌陷区输气管道危险性等级的综合评判。将以上评价模型进行实例应用,应用结果表明,基于突变理论的采空塌陷区输气管道综合评价模型可以用于采空塌陷区输气管道的危险性评价。
[Abstract]:In order to reduce the dependence of subjective judgment on the risk assessment of gas pipelines in cave-in areas, a risk assessment model based on catastrophe theory is proposed. Firstly, the physical and mechanical parameters of rock mass are analyzed from mining factors. Environmental and geological factors and buried pipeline factors are analyzed in this paper. Secondly, the risk index system of gas pipeline in cave-in area is established. Then, the dimensionless and normalized treatment of the bottom index in the index system is carried out. Finally, the catastrophe value of gas pipeline risk is calculated, and the comprehensive evaluation of the dangerous grade of gas pipeline in the cave-in area is realized. The above evaluation model is applied to an example, and the application results show that. The comprehensive evaluation model based on catastrophe theory can be used to evaluate the risk of gas pipelines in cave-in areas.
【作者单位】：西南石油大学石油与天然气工程学院;油气消防四川省重点实验室;中国石油集团工程设计有限责任公司北京分公司;
【基金】：国家“十二五”科技支撑计划项目(2011BAK06B01-11-01)
【分类号】：TE88
【正文快照】： 0引言当人类对地下矿藏进行开采时,覆盖在矿藏上的地层逐渐失去应力支撑,当开采量达到一定的界限,地层原有的力学结构被打破,失去应力平衡。当地层的支撑力不足以抵抗由平衡破坏带来的应力集中时,就会发生应力释放[1],引发采空塌陷。此类危害由于其破坏性与危险性极大,已经成

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