铝土矿山超前探水预报及水灾害治理研究

发布时间：2018-06-19 03:13

本文选题：超前探水 + TRT6000　；参考：《中南大学》2013年硕士论文

【摘要】：摘要：河南三门峡矿段村-雷沟铝土矿工程地质复杂,突水、溶洞、破碎带一直是本矿山基建过程中的难题,井巷设计要求必须遵循“有疑必探、先探后掘”的方针,以确保施工安全。目前施工采用传统的钻孔探测,采用潜孔钻机打探测孔,探测距离有限,进度缓慢,费用偏高,操作性较差,极大拖延了施工进度,造成矿山基建工期滞后,影响矿山的整体经济效益。本文通过在井下多个巷道开展的TRT6000超前探水预报工业试验,预报得到的地质岩层条件特别是地下赋存水的空间位置特征,基本保证了施工前对地下隐患水体的准确无误控制,对矿山施工有很大的指导和帮助,TRT6000超前探水技术可以在矿山各类巷道开挖掘进的施工中推广应用,有效提高对围岩情况特别是地下水的深入了解,可以在一定程度节约生产成本,避免安全事故,提高效率,加快矿山的生产建设。在探水工程的基础上,本文针对段村-雷沟项目竖井及平巷施工中工作面涌水灾害,采用工作面预注浆并在支护后的巷道涌水巷壁后注浆堵水的联合方案进行水灾害治理。实际工程证明,工作面预注浆加壁厚注浆堵水联合治水方式是竖井掘砌中通过较大含水层施工阶段中有效的施工方法。目前已经有4口竖井落底,平巷壁后堵水注浆经济有效的解决了7号进风井420m、390m中段的多出涌水问题,极大的减小排水费用,保证了工程施工的安全顺利进行。针对在软弱破碎带平巷掘进中的关键施工难题,结合矿区的岩层实际围岩质量及探测地下水文地质情况,分析破岩后主要关键力学特征,设计采用的管棚支护方案,并以实际施工试验结果验证,得出如下结论： 1)管棚超前支护针对于铝土矿山平巷施工中软弱破碎带是一种非常有效的支护方式,不仅能够确保施工安全,防止大面积片帮及冒顶,而且可以节省项目建设投资,提高矿山整体经济效益,值得推广采用。 2)管棚支护方案可适当结合利用超前小导管注浆加固围岩措施,特别是在破碎岩层中,其加固效果非常显著。本文的研究成果可为类似工程施工提供重要指导作用,为今后含水丰富及条件类似矿山的井巷建设提供了有益的参考。
[Abstract]:Abstract: the engineering geology of Cunluigou bauxite mine in Sanmenxia Mine, Henan Province is complicated, water inrush, karst cave and broken zone are always the difficult problems in the process of construction of this mine. The design requirements of shaft and roadway must follow the policy of "probing first and digging before digging". To ensure the safety of the construction. At present, the traditional drilling and drilling machine are used in the construction, the detection distance is limited, the progress is slow, the cost is on the high side, the operation is poor, the construction progress is greatly delayed, and the construction period of the mine capital construction is lagging behind. Affecting the overall economic benefits of mines. In this paper, through the industrial test of TRT6000 advanced water exploration and prediction carried out in many underground roadways, the geological strata conditions, especially the spatial location characteristics of underground storage water, are forecasted, which basically ensures the accurate control of the hidden underground water body before construction. It has great guidance and help to mine construction. TRT6000 advanced water detection technology can be popularized and applied in excavation and excavation of all kinds of roadways in mines, and can effectively improve the deep understanding of surrounding rock situation, especially groundwater. It can save production cost to some extent, avoid safety accidents, improve efficiency and speed up production and construction of mines. On the basis of the water exploration project, this paper aims at the water gushing disaster in the shaft and horizontal roadway construction of the Duan cun-Lei Gou project, and adopts the combined scheme of pre-grouting in the working face and grouting to block the water behind the wall of the roadway gushing after the support to deal with the water disaster. It has been proved by practical engineering that the combined water plugging method with pre-grouting and thick-wall grouting is an effective construction method in the construction stage of shaft excavation through a large aquifer. At present, there are 4 shafts falling to the bottom, the water plugging and grouting at the back of the roadway wall can effectively solve the problem of extra water inflow in the middle section of No. 7 inlet shaft 420m ~ 390m, greatly reduce the cost of drainage, and ensure the safe and smooth construction of the project. In view of the key construction problems in roadway excavation in weak broken zone, combined with the actual surrounding rock mass of mining area and the detection of underground hydrogeological conditions, the main key mechanical characteristics after rock breaking are analyzed, and the pipe shed support scheme is designed and adopted. The conclusions are as follows: 1) the pipe shed advance support is a very effective support method for the weak broken zone in the construction of bauxite mountain roadway, which can not only ensure the construction safety, but also ensure the safety of the construction. To prevent large area slit and roof fall, and to save the investment of project construction and improve the overall economic benefit of mine, it is worth popularizing and adopting. 2) the support scheme of pipe shed can appropriately combine with the measures of strengthening surrounding rock with advanced small pipe grouting. Especially in the broken rock formation, the reinforcement effect is very remarkable. The research results of this paper can provide important guidance for similar engineering construction and provide a useful reference for the construction of mine roadway with rich water content and similar conditions in the future.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD745

【参考文献】