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首页> 外文会议>International Symposium on Mine Safety Science and Engineering >Research on the Grouting Thickness of Roof Purdah in the Mining of Karstic Water-filling Deposit
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Research on the Grouting Thickness of Roof Purdah in the Mining of Karstic Water-filling Deposit

机译：岩溶水灌装矿床采矿中屋顶Purdah灌浆厚度的研究

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摘要

The orebody roof grouting water protecting curtain technology is to drill hole in the orebody roof to enter into the limestone strong aquifer, forming grouting water protecting curtain. The reasonable thickness of ore deposit roof water protecting curtain is critical for the effective precautions against permeability of Karst flood deposits and the safety in production during the mine service period. Currently, there is no uniformly distributed water protecting thickness design specifications for the orebody roof curtain grouting. In allusion to the design conditions of the curtain grouting mining for Gujiatai iron ore, this paper utilized coal, tunnel specifications to determine the thickness of water protecting curtain. On this basis, this paper applied numerical analysis method to conduct simulation analysis and calculation for the stability of the water protecting curtain thickness. The results showed that the curtain thickness based on the empirical formula could not meet the watertight requirements, and it should properly increase the thickness of water protecting curtain in accordance with the sphere of stope room mining influence to ensure safety of exploitation, providing a basis and guidance for the design and construction of water protecting curtain, which had certain important theoretical and practical significance for the mining of Karst water ores.
机译：矿体屋顶灌浆水保护窗帘技术是在矿体屋顶钻孔进入石灰石强大的含水层，形成灌浆水保护窗帘。矿床屋顶水保护窗帘的合理厚度对于喀斯特洪水沉积物的有效预防措施以及矿山服务期间的生产安全性的有效预防措施至关重要。目前，对矿石屋顶窗帘灌浆没有均匀分布的水保护厚度设计规范。在典型的设计条件下，围娇泰铁矿石的窗帘灌浆开采，本文利用煤，隧道规格来确定水保护窗帘的厚度。在此基础上，本文应用了数值分析方法，对水保护帘厚度的稳定性进行了模拟分析和计算。结果表明，基于经验配方的窗帘厚度无法满足水密要求，应根据采矿机构的范围施加的范围适当地增加水保护帘的厚度，以确保剥削的安全性，提供基础，提供基础和基础防水帷幕设计和建设指导，对喀斯特水矿石采矿具有一定的重要理论和实践意义。

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