临时煤仓施工防突水技术研究

Study on Water Inrush Prevention Technology of Temporary Coal Bunker Construction

鄂尔多斯母杜柴登矿临时煤仓施工期间存在2-2中煤顶板含水层突水危险,为保证临时煤仓及其附属巷道的安全施工,计算了煤仓顶板安全隔水层厚度,研究了2-2中煤顶板砂岩含水层的可疏性,研究结果表明,煤仓及其巷道顶板安全隔水层厚度和松动圈的厚度为11.62m,顶板含水层的可疏性不佳。最终决定采用降低煤仓顶板,使煤仓顶部隔水层厚度达到安全厚度。

There was water inrush danger from the roof of No. 2 - 2 seam during the construction period of the temporary coal bunker in a coal mine of Erdos. In order to ensure the safety construction of the temporary coal bunker and other related gateway, the thickness of the safety aquifuge in the bunker roof was calculated and the water drainability of the aquifer in the sandstone of the roof was studied. The study results showed that the thickness of the safety aquifuge in the roof of the coal bunker and the related gateway roof and the released ring thickness was 11.62m and the water drainability of the aquifer in the roof was not good. Finally the roof of the coal bunker reduced as applied and thus the thickness of the aquifuge in the top of the coal bunker reached the safety thickness.