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兖州矿业（集团）公司南屯煤矿、铁路运输处和山东矿业学院合作，共同开展不中断克州矿区南屯煤矿铁路专用线运输条件下开采四孔桥下保护煤柱的研究，以桥梁改造的设计施工及铁路观测站的布设与观测为方法和手段，积极采取一系列的地面保护措施，达到既出煤炭又安全运输的目的
Yanzhou Mining (Group) Company Nantun Coal Mine, Railway Transport Department and Shandong Institute of Mining in cooperation to carry out non-stop mining situation in Kezhou Nantun coal mine railway line under the conditions of mining four-hole under the protection of pillars of the bridge to transform Design and construction and railway observation station layout and observation methods and means, and actively take a series of ground protection measures, both to achieve the purpose of both coal and safe transport