中文摘要：

选择新安煤矿二1煤为研究对象,在充分调研矿区资料的基础上,系统采集10个备采工作面的58个样品进行了镜质体反射率Ro、煤质测试;收集整理了169口勘探钻孔资料,并统计分析了埋深、地温梯度数据;收集采工图资料,并统计分析了86条断层的断距、长度数据;定性分析了外部因素（埋深、地温、断层复杂程度）和内在因素（煤质参数）对Ro差异性的影响,并运用数量化理论Ⅰ作为数学工具建立了Ro差异性的定量模型,该模型可用于估算煤矿未采区煤的生烃量,指导分析矿区瓦斯赋存规律,进一步指导煤矿的安全生产。研究表明：1备采区二1煤Ro变化范围为2.09%~2.23%,差异性明显;2Ro差异性受外部因素和内在因素的共同控制,根据Ro差异性数学模型分析发现,影响因素权重由大到小依次是埋深、断层复杂程度、水分含量、地温、挥发分产率、硫分含量、灰分产率;3对于煤矿备采区,埋深是控制Ro差异性的重要外因,同一煤层的变质程度随现代垂深增加而增高;由于备采区小断层发育,断层活动对水分含量和Ro影响较大,同一挤压区域的断层活动降低了水分含量,且挤压产生的热量加大了煤变质程度,水分含量成为影响该区备采区Ro差异性的主要内因。

英文摘要：

In this paper,the coal seamⅡ1of Xin’an mine was selected as the study object.According to the sufficient basic data about the mining area,58 samples from 10 prepared mining-faces were collected for tests of Roand coal quality.Borehole data from 169 locations were chosen to count the burial depth and geothermal gradient;mining graph fault information was used to calculate the fault throw and length of the86 faults.Quantitative model of Rodifference was established by the Quantification Theory I combined with qualitative influence analysis of external factors（burial depth,geothermal and structural complexity）and internal factors（coal quality parameters）on the Rodifference.The model can be applied to estimate hydrocarbon generating quantity in non-mining area,analyze gas occurrence regularity and guide safety operation of the coal mine.Through research,it is concluded that：1）Rochanges significantly within a range of 2.09%-2.23%;2）Both external factors and internal factors have influence on Rodifference,and weight of influence factors from big to small is that of burial depth,structural complexity,moisture content,geothermal,volatile content,sulfur content and ash content;3）As an external factor,burial depth plays a dominant role to control the Rodifference,because the metamorphic grade of the same seam increases with an increase of modern vertical depth;as for the internal factor,moisture content becomes more important to control the Rodifference,as a result of small faults,which impact the moisture content and Roof the coal seamⅡ1,and the faulting in the same compression area resulted in lower water content and the heat generated by it can make the coal metamorphic degree higher.