barrier pillar

This paper calculates reliability index , lose efficacy probability and safety coefficient corresponding to the width of different barrier pillar .

并计算了与防水煤柱有关的可靠度指标、失效概率和安全系数。

Scientific Proofing of the Determination of the Size of Sand Barrier Pillar for Safety Mining under Thin Basement Rock Layer and Thick Loose Water-Bearing Bed

厚松散层薄基岩埋藏条件煤层的防砂岩柱安全尺寸论证

In contrast with other accidents , the lose efficacy probability of the barrier pillar ranges suitably in 1 × 10 - 5 ~ 1 × 10 - 6

参考其它事故的死亡率，防水煤柱的失效概率为1×10-5～1×10-6比较合适

Under such a mining condition , the safety height of the sand barrier pillar needs to be verified through scientific demonstration for ensuring the high-efficiency and safety coal mining operation . Furthermore , corresponding safety technical measures should be provided in this case .

在这样的地质条件下进行开采、防砂岩柱高度是否安全，须经过科学论证，并要有相应的安全技术措施保证，才能实现高效、安全生产。