近煤薄层灰岩水文地质特征及其在超前区域治理中的作用

Hydrogeological Characteristics of Thin Limestone near Coal and Its Role in Advanced Regional Governance

超前区域治理是华北型煤田底板水治理的重要技术。为研究薄层灰岩在超前区域治理中的意义,以山东黄河北煤田为研究区域,以徐家庄灰岩为研究对象,对徐家庄灰岩水文地质条件进行了研究,并对徐家庄薄层灰岩在底板突水中的作用以及作为超前区域治理目的层的意义等方面进行了研究。研究表明,薄层灰岩是黄河北煤田广泛发育与奥陶系灰岩与主采煤层之间的一层薄层灰岩,富水性弱─强,是阻止奥陶系灰岩岩溶水突水的关键层位。通过邱集矿治理实践,表明徐家庄薄层灰岩是底板区域治理的重要目的层,对该含水层的注浆改造对于实现奥灰威胁下矿井的安全开采具有重要意义。

Advanced regional governance is an important technology for the treatment of water from the floor in North China type coalfields.To study the significance of thin limestone in advanced regional governance,the Yellow River north coalfield in Shandong Province was taken as the research area,and the hydrogeological conditions of Xujiazhuang limestone were studied.The role of Xujiazhuang thin limestone in floor water inrush and its significance as the target layer for advanced regional governance were also studied.Research has shown that thin limestone is a widely developed in the Yellow River north coalfield,located between the Ordovician limestone and the main coal seam.It has weak to strong water abundance and is a key layer to prevent karst water inrush in Ordovician limestone.Through the governance of Qiuji mine,it is shown that the thin limestone in Xujiazhuang is an important target layer for the governance of the floor area.The grouting transformation of this aquifer is of great significance for achieving safe mining under the threat of Ordovician limestone.