中文摘要：

本文根据肥城矿区兴杨公司地质采矿条件，深入分析了底板突水注浆改造技术对突水的防治作用，系统研究了注浆改造施工工艺，并以9803工作面为例说明复杂构造松软底板煤层，通过注浆改造结合一定的安全技术措施可以实现煤层的安全回采。实践证明，底板突水注浆改造防治技术措施在肥城矿区取得了良好的效果，具有较大的经济效益和社会效益。

英文摘要：

Based on the mining geological conditions of Xingyang mine in Feicheng area, the authors analyzed the safety technical measures for preventing and controlling of water disasters, and carried out a systematic re-search on the grouting reconstruction technology. Taking 9803 working face as an example, the authors explains that the grouting reconstruction, together with a certain preventive safety technical measures, can realize the safety mining under the condition of soft floor complicated coal seam. Practices show that grouting reconstruction mea-sures for preventing and controlling floor water irruption in Feicheng mining area had been proved greatly effective and had enormous economic and social benefits.