潘三煤矿13号煤层地应力分布规律研究

利用空心包体应力计法在潘三煤矿二水平东翼13-1煤采区、西三C组中部采区共计6个测点进行了地应力测量工作，分析得出了潘三煤矿深部地应力分布规律:最大主应力接近水平，且明显大于垂直应力，地应力场中水平主应力占主导优势地位，水平主应力接近于南北向，采区巷道受水平主应力方向性影响显著。深部地应力场中最小主应力σ₃略小于垂直应力σ_v，中间主应力σ₂略大于垂直应力σ_v，地应力场呈现σ₁>σ₂>σ_v>σ₃的应力关系，测试结果可为潘三煤矿开采过程中的巷道支护和煤炭安全高效开采提供科学依据。

Study on geostress distribution of No.13 coal seam in Pansan Coal Mine

Geostress measurement was performed at six measuring points in No.13-1 coal mining area of east wing of second level of Pansan Coal Mine and the central mining area of west third group C by using the hollow inclusion stress meter method.The distribution law of geostress in the deep of Pansan Coal Mine was analyzed.The maximum principal stress was close to horizontal and significantly larger than the vertical stress.The horizontal principal stress was dominant in the geostress field.The horizontal principal stress was close to the north-south direction.The minimum principal stress σ₃ in the deep geostress field was slightly smaller than the vertical stress σ_v，and the intermediate principal stress σ₂ was slightly greater than the vertical stress σ_v.The geostress field presented a stress relationship of σ₁>σ₂>σ_v>σ₃.The test results can provide scientific basis for roadway supporting and safe and efficient coal mining in Pansan Coal Mine.