导水裂缝带高度研究方法探讨——以陈家沟煤矿为例

导水裂缝带高度是采煤安全性评估、矿井涌水量预测及防水煤(岩)柱设计等工作的重要参考指标,在顶板水害事故预防、瓦斯灾害防治及煤层气资源开发等方面也有重要的意义。以陈家沟煤矿为例,运用实测法、公式法、数值模拟法、物探法、类比法和理论分析法等方法对其导水裂缝带高度进行了研究,并对其成果进行了优劣性及适用性对比分析,结果表明不同方法得出的陈家沟煤矿导水裂缝带高度值有一定差异。实际应用中,应尽量采取实测法,辅以物探法、数值模拟法或公式法等,由点扩展到面;当实测法在某些地区不能取得可靠的数据时,应根据实际情况选取其他适合的多种方法综合分析,相互补充、反复论证,以使研究成果趋近实际值。

Discussion on the methods of determining the height of water flowing fractured zone:a case study on Chenjiagou coal mine

The height of water flowing fractured zone is the important reference index for evaluating the mining safety, predicting mine discharge and determining waterproof coal pillar as well as has the important practical value for the water control of roof, prevention and cure of gas disaster and development of coal-bed methane resources. In this paper, taking Chenjiagou coal mine as an example, using practical measurement method, empirical formula method, numerical simulation method, geophysical prospecting method, analogy method and theoretical analysis method to determine the height of water flowing fractured zone. By comparing the advantages and disadvantages and applicability of each method, the result shows that the height of water flowing fractured zone has a certain difference by different methods. In practical application, practical measurement method should be taken as far as possible, supplemented by geophysical prospecting method, numerical simulation method and empirical formula method, etc., and from the point spread to the surface. When the practical measured method can not obtain reliable data in some areas, other methods should be choosen to complement each other, repetition in order to make research result approximation to the actual value.