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超化煤矿采用放顶煤技术以后，采面生产能力有了较大幅度的提高，主井提升能力成了制约矿井生产发展的主要因素，经验算论证，制订了提升系统改造的方案，在不影响矿井生产前提下实施改造，并取得良好效果。
After using top coal caving technology in Chaohua Coal Mine, the production capacity of mining face has been greatly improved. The main shaft lifting ability has become the main factor restricting the production and development of mine. Experience argues and formulates the plan to improve the system transformation. Affect the mine production under the premise of the implementation of transformation, and achieved good results.