南桐煤矿是重庆地区主要的焦煤产地。在南桐煤矿二井井田范围内有一条大的河流—蒲河,从南到北横贯整个井田。河床压煤量达1386.7万吨,占二井整个工业储量的91%。如果不解放蒲河下被压的煤量,二井几乎无煤可采。因此,如何安全和合理地开采蒲河下保护煤柱的煤炭,对充分开发国家地下资源,扩大矿井生产能力,延长矿井寿命,实现毛主席“扭转北煤南运”的伟大战略方针,具有十分重 Nantong Coal Mine is a major coking coal producer in Chongqing. There is a large river in the Nantong coal mine, the Second Minefield, Puhe, which runs across the entire field from south to north. The amount of coal in the river bed reached 13.867 million tons, accounting for 91% of the entire industrial reserve of Well No.2. If you do not liberate the amount of coal under pressure on the Puhe, there is almost no coal available. Therefore, how to safely and reasonably mine the coal of coal pillars under the Puhe River is very important for fully exploiting the underground resources of the country, expanding the production capacity of the mines, prolonging the life of the mines, and achieving Chairman Mao’s great strategic guideline of “reversing the northward transportation of northern coal to the south.”