探放水技术在矿井水文地质补充勘探中的应用  

Application of Water Detection and Drainage Technologies in Mine Hydrogeological Supplementary Exploration

作　　者：姬中奎 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710054 [2]陕西省煤矿水害防治技术重点实验室,陕西西安710077

出　　处：《中国煤炭地质》2014年第6期30-33,55,共5页Coal Geology of China

基　　金："十二五"国家科技支撑计划"煤矿水害隐患探查与防治关键技术及示范"(2012BAK04B04)

摘　　要：2011年5月30日,柠条塔矿S1210工作面在推采至距切眼61m时,初次来压顶板大面积出水,至6月2日,水量达1200m3/h。该水量在干旱少雨、地下水资源匮乏的陕北矿区十分罕见,也与矿井北翼及南翼北部的情况不同,因此需要进行水文地质补充勘探工作。补勘结果表明,工作面突水的通道是2-2煤开采后形成的冒落带和导水裂隙带,直接水源是延安组砂岩水和直罗组砂岩水,间接水源包括第四系松散层水及烧变岩水。基于补勘成果还不能明确S1210面恢复生产方案是在强排下继续开采,还是甩开大水区域重开切眼,该矿又进行了探放水工作,并利用探放水钻孔进行了放水试验和工作面涌水量数值模拟计算。最后综合考虑将矿井防治水和恢复生产的方案确定为封闭突水点,重新开切眼。恢复生产后的实际开采发现,S1210面涌水量未超过100m3/h,防治水效果明显。目前工作面已实现了安全回采。A large area water inrush had happened at first weighting roof when the working face S1210 in Ningtiaota coalmine advanced to 61m ahead of open-off cut on May 30, 2011, and the amount of water up to 1 200 m^3/h till June 2. This amount of inflow is particularly uncommon in the drought and lack of groundwater northern Shaanxi mine area, also different from both north and south wings of the coalmine, thus supplementary hydrogeological exploration is needed. The exploration result has shown that the water inrush channel is caving zone and water conducted zone formed by the winning of coal No.2-2;while the direct water sources have Yanan Formation sand-stone and Zhiluo Formation sandstone aquifers, indirect water sources have Quaternary loose bed and burnt rock aquifers. But depend only on the result of exploration is insufficient to decide the resumption scheme whether continuing the mining under strong drainage or keep away from the inundated area and over again the open-off cut. So that, the water detection and drainage carried out, and using the boreholes to do outflow test and working face inflow numerical simulation computing. Finally has decided the resumption scheme to block out the water inrush points and over again the open-off cut. The practice has found that after the resumption, water inflow of the working face S1210 is not in excess of 100m^3/h, thus the effect is obvious. At present, the working face safety in winning is realized.

关 键 词：工作面突水 水文地质补勘 探放水技术 防治水 柠条塔矿 

分 类 号：TD745.22[矿业工程—矿井通风与安全] P641.461[天文地球—地质矿产勘探]