Research Article

Study on Fracture Distribution and Local Brittleness Characteristics Based on Stepwise Regression Method

Table 1

The determination result of core mineral compositions and mechanical parameters.

Serial numberThe type and content of mineralsClay mineralsElastic modulus (GPa)Poisson’s ratio
QuartzPotassium feldsparPlagioclaseCalciteDolomiteAnalciteSideritePyrite

10.2030.0310.1680.0330.2020.1320.0210.0250.18529.230.285
20.1970.0360.0730.0890.0950.2910.0180.0190.18231.790.278
30.1480.0380.1660.0440.2170.1210.0140.0280.22424.650.307
40.2890.0320.13800.2480.089000.20426.980.271
50.2110.040.1590.0520.1510.1360.0150.020.21626.740.283
60.1950.0370.1650.0110.2140.14000.23824.880.288
70.1770.0540.27300.1530.03300.0150.29521.560.281
80.0960.0430.12500.1160.3410.0750.0320.17222.560.274
90.1060.070.1170.020.2670.160.030.0180.21226.270.274
100.120.0730.2420.110.180.050.0130.0240.18821.930.297
110.2030.0710.1690.0240.0730.1820.05600.22222.10.28
120.2180.0270.1140.0110.3130.1090.10100.10729.530.271
130.2510.1030.16400.1890.040.0870.030.13631.630.268
140.1960.0650.0960.020.1390.309000.175300.271
150.1240.0580.0630.0170.0540.4290.01900.23628.840.279
160.1310.1480.210.0390.2560.0280.0170.0420.12929.530.281
170.0680.1440.3160.0370.24500.0220.0150.15326.280.289
180.1220.0670.3750.0190.1770.0480.03100.16128.60.273
190.0950.1010.1130.0360.3590.0450.0160.0270.20823.490.312
200.1250.120.1920.1440.1410.0950.0130.0460.12425.210.272
210.1980.0590.1030.150.1080.1680.04800.16621.420.274
220.0610.0840.4580.0340.1370.0170.04900.1622.530.284