钻孔监测在乌达煤田火区治理中的应用

Application of borehole monitoring in fire area treatment of Wuda Coalfield

介绍了一种钻孔温度和标志性气体监测方法,可以获得煤田火区不同区域的燃烧状态信息,用于煤田火区治理效果评估。在乌达煤田Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅸ号火区布置测温钻孔1 296个进行为期1年的连续监测,采集及化验标志性CO气体气样1 296组;单孔完成测温24次,单组完成气体化验24次,完成地面调查79.962万m^2。监测结果表明,Ⅱ、Ⅲ、Ⅳ、Ⅴ号火区内煤火均处于熄灭状态,仅Ⅸ号火区煤火尚未完全熄灭,但有熄灭趋势。该方法可广泛用于采取回填覆盖、灌浆填充方法治理的火区开展治理效果评价。

To introduce a monitoring method of borehole temperature and symbolic gas,which can obtain the combustion state information of different areas in coalfield fire area and be used for evaluating the treatment effect of coalfield fire area.Through arranging 1296 temperature measuring boreholes in fire zonesⅡ,Ⅲ,Ⅳ,Ⅴ,Ⅸof Wuda coalfield for continuous monitoring for one year,1296 groups of landmark CO gas samples were collected and tested.24 temperature measurements were completed in a single hole,24 gas tests were completed in a single group,and 0.79962 million m 2 of ground investigation was completed.The monitoring results showed that the coal fires in No.Ⅱ,Ⅲ,Ⅳ,Ⅴfire zones were all in an extinguished state,and only the No.Ⅸfire zone has not been completely extinguished,but there was a tendency to extinguish the coal fires.The method can be widely used for post-evaluation of treatment effect in fire areas treated by backfill covering and grouting filling methods.