水化学示踪试验在邱集煤矿防治水中的应用

Application of water chemical tracer test in water prevention in Qiuji Coal Mine

为探查邱集煤矿四五灰含水层与徐奥灰含水层之间的水力联系,用NaNO3和NH4HCO3作为示踪剂通过地面徐灰观测孔和奥灰观测孔开展了水化学示踪试验。试验结果表明,邱集煤矿井田范围内奥灰含水层观测孔与四五灰含水层出水点之间存在着水力联系,但没有形成垂向贯通裂隙;徐灰观测孔与四五灰含水层出水点之间存在着明显的水力联系,同时形成垂向贯通裂隙。

In order to explore hydraulic relationship between limestone aquifer of No.4 limp and No.5 limp and that of Xujiazhuang limestone and Ordovician limestone, NH4CO3 and NaNO3 as the tracer through has been put in the observation borehole of Xujiangzhuang limestone and Ordovician limestone in the ground, then hydrochemical tracer test has been developed. The re- sults show that the observation borehole of Ordovician limestone has kept a hydraulic relationship with observation borehole of limestone aquifer of No.4 limp and No.5 limp, but vertical penetrat- ing cracks have not been formed^the observation borehole of Xu limestone has kept a obviously hydraulic relationship with limestone aquifer of No.4 limp and No.5 limp, and vertical penetrating cracks have been formed.