经 济 效 益 分 析 报 告

1、经 济 效 益 分 析 报 告项目名称：复杂地质条件工作面过断层技术研究与实施单 位： 中平能化集团平煤股份七矿日 期： 二0一0年十月 目 录1.项目经济效益分析 491.1项目总体技术经济评价 491.2经济指标计算分析 491.3社会效益分析 511.项目经济效益分析1.1项目总体技术经济评价在复杂地质条件下综采工作面过断层回采，调伪倾斜减小工作面和断层相交角度，利用快速延长采面技术回采生产，综采工作面利用顶板上金属网、及时移架等技术控制顶板，对偏帮严重地段采取超前维护等技术安全回采，创七矿复杂地质条件下采煤工作面回采的先例，丰富了集团公司综采工作面在采面断层多条件下，实现安全回采的实践

2、经验。复杂地质条件下综采工作面过断层，实现安全回采具备的主要优点有：（1) 工作面过断层矸石混入原煤中的量大大减少，煤质显著提高，灰分由一般情况下过断层时的38%降低至35%。 (2) 综采工作面快速延长采面，比正常情况下安装时间缩短了5天。减少停产时间5天，相当多出煤8740吨。 (3) 根据本采面断层多的情况，采取切实可行的针对性措施，实现了采煤工作面回采时的安全高效生产，创造了可观的社会和经济效益。1.2经济指标计算分析a) 煤质显著提高创造的经济效益综采工作面煤质显著提高，灰分由38%降低至35%。w1=采面受断层影响的工业储量（灰分35%时吨煤售价-灰分38%时吨煤售价）综采采煤工艺

3、资源回收率取95%=26万（450-400）95%=1235万（元）b) 综采工作面快速延长采面增加的经济效益综采工作面快速延长采面，减少了综采工作面的安装时间5天，即减少停产时间5天，相当多出煤0.874万吨。w2=qta=17485450=393万（元）式中：q采面平均日产量1748t/天；t减少停产天数5天；a吨煤售价450元/t；c) 综合经济效益w=w1w2=1235393=1628万元1.3社会效益分析1）在复杂地质条件下成功回采，提高了工作面单产和工效，实现了安全生产，为七矿创造了可观的经济效益。2) 依靠科技创新，实现综采工作面在断层多地质条件复杂情况下安全回采，开创七矿及集团

4、公司综采工作面回采新技术。提高了七矿综合机械化回采的科技水平。3)项目的实践成功，为七矿今后在复杂地质条件下综合机械化开采积累了丰富的实践经验，矿井实现安全生产有利于矿区的和谐稳定发展。应用单位（盖章）2010年10月acknowledgements my deepest gratitude goes first and foremost to professor aaa , my supervisor, for her constant encouragement and guidance. she has walked me through all the stages of the wr

5、iting of this thesis. without her consistent and illuminating instruction, this thesis could not havereached its present form. second, i would like to express my heartfelt gratitude to professor aaa, who led me into the world of translation. i am also greatly indebted to the professors and teachers

6、at the department of english: professor dddd, professor ssss, who have instructed and helped me a lot in the past two years. last my thanks would go to my beloved family for their loving considerations and great confidence in me all through these years. i also owe my sincere gratitude to my friends

7、and my fellow classmates who gave me their help and time in listening to me and helping me work out my problems during the difficult course of the thesis. my deepest gratitude goes first and foremost to professor aaa , my supervisor, for her constant encouragement and guidance. she has walked me thr

8、ough all the stages of the writing of this thesis. without her consistent and illuminating instruction, this thesis could not havereached its present form. second, i would like to express my heartfelt gratitude to professor aaa, who led me into the world of translation. i am also greatly indebted to

9、 the professors and teachers at the department of english: professor dddd, professor ssss, who have instructed and helped me a lot in the past two years. last my thanks would go to my beloved family for their loving considerations and great confidence in me all through these years. i also owe my sincere gratitude to my friends and my fel