摘要
为了合理评价煤层隔水底板的稳定性，使用了可靠性分析的“JC”法，分析了水压力、隔水底板破坏深度和突水系数的不确定性，建立了煤层隔水底板可靠度分析的极限状态方程，并计算了与隔水底板稳定性有关的可靠度指标、失效概率和突水系数。依据现行《矿井水文地质规程》，并参考其它事故的发生率，提出煤层隔水底板的失效概率为1．5×10^-1～3．0×10^-3。
The ＂JC＂ method reliability is used to evaluate the steadiness of impervious base reasonably. Limit state equations for reliability of impervious base are given after analyzing randomness of hydraulic pressure, depth of destructive bed and coefficient of water inrush. This paper calculates reliability index, lose efficacy probability and coefficient of water inrush corresponding to the thickness of different impervious base. The lose efficacy probability of the impervious base ranges suitably in 1.5 × 10^-3 - 3.0 × 10^-3 bv contrast with other accidents .
出处
《河北工程大学学报（自然科学版）》
CAS
2008年第2期62-64,75,共4页
Journal of Hebei University of Engineering:Natural Science Edition
关键词
隔水底板
突水系数
可靠度
极限状态方程
impervious base
coefficient of water inrush
reliability
limit state equations
