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。
This paper calculates reliability index, lose efficacy probability and safety coefficient corresponding to the width of different barrier pillar.
在此基础上推导出采场断层防水煤柱留设计算公式，并用实例验证该公式的合理性。
The formulas to design safe pillar against water-inrush from faults are achieved according to above results and a case study shows that the formula is reasonable.
第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上，其隔水性能影响到防水煤柱的合理留设。
The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar.
监测显示了工作面周围岩层的三维破裂形态和范围，为矿井确定防水煤柱的高度提供了可靠的依据；
MS monitoring results also show the 3_D shape and scale of strata fracturing, which are very useful to determine the height of waterproof in coal mine.
根据七台河矿区具体情况，对各种条件下的防水煤岩柱的留设原则及计算方法进行论述。
Based on the state of Qitaihe mine area, approaches the set rules and calculation methods of water_proof pillar at different conditions.
该研究表明，在富水性较强的古河道发育位置，要合理留设防水煤岩柱，才能保证煤矿安全生产。
Through above research, in the old river channel where water-abundance is good, the pillar must be suitably left for the safe of mining.
该研究表明，在富水性较强的古河道发育位置，要合理留设防水煤岩柱，才能保证煤矿安全生产。
Through above research, in the old river channel where water-abundance is good, the pillar must be suitably left for the safe of mining.
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