古交矿区峰峰组与上马家沟组水力联系及意义

Hydraulic Connection and Meaning between Fengfeng Group and Shangmajiagou Group in Gujiao Mining Area

为了进一步了解古交矿区带奥灰水压开采的水害水源与突水机理,对中奥陶统峰峰组和上马家沟组两个主要含水层的水力联系进行了研究。依据矿区水文地质勘探成果、峰峰组和上马家沟组岩石学及水文地质特征,划分出不同的含水层与隔水层,通过34个水文钻孔水位和1980年以来奥灰水位的动态变化,证明峰峰组含水层实际位于其上段,上马家沟组含水层位于其中、上段,两者之间存在明显的隔水层,即峰峰组下段,两者之间水力联系差,是两个相互独立的含水层。距离煤层较近的峰峰组含水层是影响矿区带压开采的主要水源,但峰峰组在该区域富水性弱,由于其与上马家沟组水力联系差,对矿井安全影响较小,是古交矿区带压开采的有利条件。

In order to further understand the water and water inrush mechanism of the ordovician,the hydraulic relations of the two main aquifers in the Fengfeng and Shangmajiagou are studied. Different aquifers are classified according to hydrogeological exploration in the mining area,The dynamic change of water level in 34 boreholes and ordovician water level since 1980 has been analyzed. It is proved that the Fengfeng group is located in its upper section,and the Majiagou group middle to upper part of the aquifers,and there is an obvious water resisting layer between the two,That is to indicate that the lower part of the Fengfeng group and the upper part of Majiagou group has poor hydraulic contact,each belongs to an independent aquifer. The Fengfeng water group is close to the coal seam which is the main water source affecting the mining of the area,due to its weakness and poor hydraulic connection with the Majiagou group,it has less effect on the safety of the mining,which consists of favorable Conditions for mining in Gujiao mining area under the condition of aquifer.