摘要
针对地表塌陷的突发性、高危性、不确定性等特点,提出基于突变理论的塌陷区周边安全评价方法。运用层次分析法计算各指标的权重并对其重要程度排序,避免了人为赋值的主观性;利用突变级数法计算突变级数值,建立了4级塌陷区周边安全评价指标体系,包含3个二级指标(区域土地、区域水系和区域资源),8个三级指标和23个四级指标。以程潮铁矿西区塌陷坑为例,计算得出2014-2019年塌陷区周边的安全总突变级数值分别为0.745、0.807、0.762、0.769、0.756、0.748,接近欠安全状态,结果与实际情况较符合,验证了该评价方法的可靠性。根据对塌陷坑周边测点的水平和垂直变形的分析,提出了优化开采顺序、调节地下水抽排、优化爆破参数、减少爆破扰动等控制措施。
In view of the features such as the sudden,high risk and uncertainty of the surface collapse,a method for safety evaluation around the mine collapse area based on catastrophe theory was proposed.In this paper AHP was employed to calculate the weight of each index and sort their importance degree for avoiding the subjectivity of artificial assignment;the catastrophe level value was calculated by using the mutation series method,as a result,and the safety evaluation index system with four levels for collapse area was established,including 3 level-2 indexes(regional land,regional water system and regional resources),8 level-3 indexes and 23 level-4 indexes.Taking the collapse pit in the west area of Chengchao Iron Mine as a case,the total safety catastrophe level values around the collapse area were calculated to be 0.745 in 2014,0.807 in 2015,0.762 in 2016,0.769 in 2017,0.756 in 2018 and 0.748 in 2019 respectively.The results were in conformity with the actual situation,and the reliability of the evaluation method was verified.According to the analysis of horizontal and vertical deformation of the measuring points around the collapse pit,such regulatory measures as optimization of mining sequence,regulating groundwater pumping procedure,optimizing blasting parameters and minimizing disturbance due to blasting were put forward.
作者
许梦国
闫曳綪
刘红阳
张威威
Xu Mengguo;Yan Yeqian;Liu Hongyang;Zhang Weiwei(School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan Hubei 430081,China)
出处
《化工矿物与加工》
CAS
2021年第10期46-51,共6页
Industrial Minerals & Processing
基金
国家自然科学基金(51604195)
湖北省自然科学基金(2018CFC818)。
关键词
地面塌陷
突变理论
安全现状评价
层次分析法
突变级数值
ground collapse
catastrophe theory
safety status evaluation
analytic hierarchy process
catastrophe level value
