顶板岩层薄弱区高承压含水层钻孔涌水治理技术

薛建坤

顶板岩层薄弱区高承压含水层钻孔涌水治理技术

薛建坤

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出版历程
- 发布日期: 2019-03-19

Drilling Water Treatment Technology for High Pressure Confined Aquifer in Weak Area of Roof Rock Stratum

XUE Jiankun

摘要

摘要: 在分析鄂尔多斯盆地某煤矿井下锚索孔涌水特征的基础上,利用水化学分析方法,确定了锚索孔出水水源为顶板探水孔沟通的直罗组砂岩水,出水通道为钻孔与顶板围岩之间贯通型裂隙。针对顶板岩层薄弱、水压高的特点,提出并实施了“孔内疏水泄压+底部低压加固注浆+顶部高压封孔注浆”的治理方案。现场实施后,有效封堵了钻孔高压涌水,减水率达100%,且巷道围岩稳定。
- 岩层薄弱区 /
- 高承压含水层 /
- 钻孔水害 /
- 注浆 /
- 疏水泄压
Abstract: Based on the analysis of the characteristics of water inrush from the anchor hole in a coal mine in Ordos Basin, the water chemistry analysis method was used to determine the sandstone water of Zhiluo Formation in which the water source of the anchor cable hole was communicated with the water channel of the roof. The outlet channel is a through-hole fracture between the borehole and the surrounding rock of the roof. Aiming at the characteristics of weak roof rock layer and high water pressure, the treatment plan of “water drainage and pressure relief +bottom low pressure reinforcement grouting+top high pressure sealing grouting” was proposed and implemented. After the implementation of the site, the high-pressure water inrush from the borehole was effectively blocked, the water reduction rate was up to 100%, and the surrounding rock of the roadway was stable.
- weak area of rock stratum /
- high-pressure confined aquifer /
- drilling water damage /
- grouting /
- water drainage pressure relief

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参考文献(13)

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