Abstract：Research purposes:The geologic strata in the area of Keshiketeng Mountain Tunnel is diverse with complicated geological structure． Based on the analysis of the geological characteristics of this area，in this paper，the introduction is given to application of hydraulic fracturing technology in testing the ground stress and combined the test results the introduction is also given to the comprehensive characteristics of the ground stress of this area and the geological problems that probably happen．
Research conclusions: Based on the drilling in the area of Keshiketeng Tunnel，the following points are concluded from the comprehensive analysis of the level and state of the ground stress in this area by using hydraulic fracturing technology area: (1) The maximum value of the level main stress should be bigger than the minimum level main stress and the vertical stress，and the level stress should be taken as the dominant factor．(2) The tested maximum and minimum level main stress should increase with the increase of the drilling depth and the NEE － SWW direction of squeezing should be taken as the dominant direction of the maximum level main stress．(3) As the ground stress of this area is distributed evenly，the measured stress is not high，so there is no possibility of happening rock outburst．
李瑞峰. 克什克腾越岭隧道区地应力特征分析[J]. 铁道工程学报, 2011, 28(6): 52-57.
LI Rui － feng. Analysis of Characteristics of Ground Stress in Area of Keshiketeng Mountain Tunnel. 铁道工程学报, 2011, 28(6): 52-57.
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2011, Vol. 28 
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