基于风险矩阵的PHA在矿山排土场安全评价中的应用

Application of PHA based on risk matrix to the mine dump safety assessment

预先危险性分析法(PHA)是一种常用的定性安全评价方法,但由于其对危险等级的判定没有量化的指数作为依据,因而在实际应用中往往不免存在主观臆断的因素。然而基于风险矩阵(Risk Matrix)的预先危险性分析评价方法,使PHA评价法可以量化评判指数,使安全评价更加科学合理。

Preliminary Hazard Analysis （ PHA ）, a conventional qualitative safety assessment approach, has some subjective factors in practice due to its absence of quantitative measurements in deciding hazard grades. However, this paper introduces a preliminary hazard analysis based on the risk matrix technique to add the accurate quantitative analysis to PHA, so its assessment is more scientific and rational.