Geomechanical Properties of the Carboniferous Middle Coal Measures: Influence on fracture fluid flow and frictional stability during geothermal utilisation (UKGEOS Glasgow)

UKGEOS and Core Sample Analysis. Geomechanical testing was performed to determine triaxial compressional strength, tensile strength, frictional strength and permeability of sandstones, siltstones, mudstones and coals from eleven depth intervals within the GGC01 borehole, UK Geoenergy Observatories (UKGEOS), Glasgow, United Kingdom. Frictional strength tests were also performed on cuttings samples of sandstones, siltstones, mudstones and coals from the GGA08 borehole, Glasgow, United Kingdom. In total twenty-three tensile strength tests were performed on ten sampled intervals, and seven porosity measurements pre-and post-failure were taken. Nine triaxial compressive strength tests and twenty-one frictional strength tests were performed, with permeability measured both before and after failure or shear respectively. From compressive strength tests we also determined the Young’s modulus and Poisson’s ratio. Results of X-Ray Diffraction are also included in the dataset.

英国地球观测站（UKGEOS）与核心样本分析。对来自英国地球能源观测站（UKGeoenergy Observatories）Glasgow的GGC01钻孔中11个深度层段的砂岩、粉砂岩、泥岩和煤进行了地力学测试，以确定其三轴抗压强度、抗拉强度、摩擦强度和渗透率。在GGA08钻孔的砂岩、粉砂岩、泥岩和煤的切割样品上，也进行了摩擦强度测试。在十个采样层段上总共进行了二十三次抗拉强度测试，并在破坏前后进行了七次孔隙率测量。进行了九次三轴压缩强度测试和二十一次摩擦强度测试，分别测量了破坏或剪切前后的渗透率。从压缩强度测试中，我们还确定了杨氏模量和泊松比。数据集还包括X射线衍射的结果。