矿井奥灰水带压开采技术分析及防治水措施

针对奥陶系灰岩含水层富水性强、水压大、水位高等问题，分析了矿井奥灰水带压开采及防治水技术以及井田水文地质条件，确定10、11、13号煤层矿井水文地质类型为中等。研究了奥灰含水层富水特征及煤层底板隔水性能，在正常块段工作面掘进过程中受到底板奥灰水的威胁小，是相对安全的；但在构造破坏地带，因断层、陷落柱等具有导水性，在承压区内有可能发生突水，并提出了导水构造、巷道掘进、工作面、底板注浆加固及改造等防水措施。研究为后续矿井安全开采提供了技术支持。

Analysis on mine Ordovician limestone water under pressure mining technology and water prevention measures

Aiming at the problems of Ordovician limestone aquifers，such as strong water richness，high water pressure，and high water level，this paper analyzed the analysis of mine Ordovician limestone water under pressure mining technology and water prevention，and the hydrogeological conditions of the minefield.It was determined the hydrogeological type of No.10，No.11，and No.13 coal seam in the mine is medium.The water-rich characteristics of the Ordovician aquifer and the water resistance of the coal seam floor have been studied.During the tunneling process of the normal block，the threat of the Ordovician limestone water from the floor is small and it is relatively safe.In the damaged zone，due to the water conductivity of faults and collapsed columns，water inrush may occur in the pressure-bearing zone.Water-conducting structures，roadway excavation，working face，floor grouting reinforcement and reconstruction were proposed.The research has provided technical support for subsequent mine safety mining.