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煤矿厚层灰岩岩溶水害是一个迄今未能很好解决的难题。岩溶水害主要表现为:淹没矿井;矿井涌水量过大,排水费用过巨。在我国北方,受岩溶水害的煤矿的分布相当普遍。这种水害主要是由巨厚奥陶纪灰岩对矿井直接或间接充水造成的。本文从北方煤
Karst limestone karst water damage in coal mines is a problem that has not been well solved so far. Karst water damage mainly manifested as: submerged mine; mine water inflow is too large, drainage costs too huge. In northern China, the distribution of coal mines affected by karst water is quite common. This water damage is mainly caused by the huge thick Ordovician limestone filling the mine directly or indirectly. This article from the northern coal