中关铁矿堵水帷幕模型的建立及其稳定性分析

发布时间：2019-06-25 12:35

【摘要】：为保护地下水资源,合理开发矿产资源,采用全封闭的注浆堵水帷幕堵截地下水是保证大水矿山正常开采的一种有效的技术措施。在井巷施工及矿体开采过程中,需对帷幕内围岩进行疏干排水,随着疏干排水的进行,势必会在帷幕内外形成一定的水力梯度,这将对帷幕的稳定性产生很大的不利影响。结合中关铁矿注浆堵水帷幕工程,根据矿区的水文地质资料、工程地质资料和钻孔资料,建立堵水帷幕区域的三维地质模型、三维可视化模型和三维力学计算模型,并对帷幕内围岩疏干排水引起的应力响应进行分析。结果表明:疏干排水使堵水帷幕区域的应力场发生了明显的改变,疏干排水对西侧和西南侧帷幕的扰动较为明显。
[Abstract]:In order to protect groundwater resources and reasonably develop mineral resources, it is an effective technical measure to ensure the normal exploitation of large water mines by using fully closed grouting curtain to block groundwater. In the process of shaft and roadway construction and orebody mining, it is necessary to drain the surrounding rock in the curtain. With the drainage, a certain hydraulic gradient will be formed inside and outside the curtain, which will have a great adverse impact on the stability of the curtain. Combined with the grouting water blocking curtain project of Zhongguan Iron Mine, according to the hydrogeological data, engineering geological data and drilling data of the mining area, the three-dimensional geological model, the three-dimensional visualization model and the three-dimensional mechanical calculation model of the water shutoff curtain area are established, and the stress response caused by the drainage of the surrounding rock in the curtain is analyzed. The results show that the stress field in the water shutoff curtain area has been obviously changed by the drainage, and the disturbance of the drainage to the west and southwest sides is more obvious.
【作者单位】：华北理工大学矿业工程学院;河北省矿业开发与安全技术重点实验室;河北钢铁集团沙河中关铁矿有限公司;
【基金】：国家自然科学基金项目(编号:50904013,51174045)
【分类号】：TD743

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