摘要
为探索矿区冻土环境评价的方法和理论,应用突变理论对冻土环境进行了分析.基于由冻土冻融侵蚀敏感性、冻土热稳定性和冻土生态脆弱性3个子系统组成的青海木里矿区冻土环境评价指标体系,建立了木里矿区冻土环境评价突变模型.利用文献资料和野外考察资料,采用突变级数法,通过突变模型的归一公式建立了评价等级标准(理想状态、良好状态、一般状态、较差状态、恶劣状态),并对木里矿区冻土环境进行了综合评价.研究结果表明:木里矿区冻土环境质量为一般状态;与其他环境评价方法相比,突变级数法只需对评价因子进行重要性排序,在一定程度上避免了权重赋值的主观性.由于冻土环境的特殊性,应用突变级数法对矿区冻土环境进行评价更加地科学和有效.
In order to investigate the method and the theory on the assessment of the permafrost environment in the mining area, the catastrophe theory was used in analyzing the permafrost environment. Based on the integrated indi- cator system, which consisted of three subsystems ： permafrost freezing-thawing erosion sensibility, permafrost thermal stability and permafrost ecological fragility, the catastrophe models of the assessment of the permafrost environment in the Muli mining area in Qinghai Province was set up. Meanwhile, resorted to reference and the fieldwork data, the assessment grade criterion of the Muli mining area, included five situations： ideal situation, good situation, fair situation, worse situation and bad situation, were established by catastrophe progression method and the permafrost environment in the Muli mining area was assessed. The result shows that the condition of permafrost environment in the Muli mining area is at a fair state. Compared with other environmental assessment methods, catastrophe progression method, in a large extent, avoids the subjectivity of making indicators＇weights because it just needs to arrange indicators according to its importance in a system. And the application of catastrophe progression method to the assessment of the permafrost environment in mining area is more seientific and effective because of the particularity of the permafrost environment.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2008年第8期881-886,共6页
Journal of China Coal Society
基金
中国科学院“百人计划”资助项目(2006)
关键词
突变级数法
青海木里矿区
冻土环境
评价模型
catastrophe progression method
Mull mining area in Qinghai Province
permafrost environment
assessment models
