基于集对可拓粗糙集方法的高边坡爆破施工安全风险评价

发布时间：2018-03-12 09:56

本文选题：集对可拓分析　切入点：岩质高边坡　出处：《中南大学学报(自然科学版)》2017年08期 　论文类型：期刊论文

【摘要】：针对高速公路岩质路堑高边坡采用爆破施工开挖方式容易引起边坡稳定性下降而出现边坡坡体垮塌以及因爆破产生的振动作用造成邻近构筑物损坏、人员伤亡等安全风险问题,综合考虑边坡高度、坡形坡率、地质条件、爆破设计方案、爆区环境以及安全监督与管理共6个影响因素,通过确定拟评价样本指标的经典域与节域,构建基于同异反分析的联系度隶属函数,建立基于集对可拓分析方法的安全风险评价模型,采用粗糙集理论计算安全风险评价指标权重,对高边坡爆破施工安全风险进行评价。研究结果表明:工程实例高边坡爆破施工安全风险评价等级为中度风险,与现场调研结果一致;评价方法能真实反映高边坡爆破施工安全风险评价过程中的不确定性,提高高边坡爆破施工安全风险评价的精度;评价模型计算简单,能够为高边坡爆破施工提供风险预判,有效降低安全事故的发生概率,节约工程施工安全防护成本。
[Abstract]:In view of the safety risk problems such as slope stability decline caused by blasting construction and excavation of rock cut high slope of expressway, the side slope body collapses and the vibration caused by blasting results in damage of adjacent structures, casualties and so on. Considering six factors, such as slope height, slope rate, geological condition, blasting design scheme, blasting environment and safety supervision and management, the classical and segmental domains of the sample index are determined. The relation degree membership function based on the similarity, difference and inverse analysis is constructed, and the safety risk evaluation model based on the set pair extension analysis method is established, and the weight of the security risk evaluation index is calculated by rough set theory. The safety risk of high slope blasting construction is evaluated. The results show that the evaluation grade of high slope blasting construction safety risk is moderate risk, which is consistent with the result of field investigation. The evaluation method can reflect the uncertainty in the process of high slope blasting construction safety risk evaluation, improve the accuracy of high slope blasting construction safety risk evaluation, and the evaluation model is simple to calculate, which can provide the risk prediction for high slope blasting construction. Effectively reduce the probability of safety accidents and save the cost of construction safety protection.
【作者单位】：长沙理工大学特殊环境道路工程湖南省重点实验室;广西交通投资集团有限公司;长沙理工大学交通运输工程学院;长沙理工大学土木建筑学院;
【基金】：国家自然科学基金资助项目(51508042,51678073,51274049) 广西交通投资集团有限公司博士后基金资助项目(2016) 长沙理工大学特殊环境道路工程湖南省重点实验室开放基金资助项目(kfj120402) 浙江省交通运输厅科技项目(2014H22)~~
【分类号】：U416.113

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