Research Article

Mechanical Mechanism of Water Injection to Enhance the Stability of Soft Coal

Table 4

Coal shear strength index under different water contents.

Number (kPa)S (kPa)c (kPa)φ (°)

D110.9665017.9881.8914.34
D1210029.98
D1415043.471
D14200107.928

D213.8415019.4873.193514.72
D2210026.982
D2415053.964
D24200109.427

D317.6885014.995.018413.45
D3210028.481
D3415056.962
D3420098.934

D4112.9575014.9910.03713.4
D4210034.477
D4415068.954
D44200100.433

D5117.8885020.98617.20613.06
D5210050.966
D5415061.459
D54200109.427

D6120.8475023.98421.18213.11
D6210053.964
D6415068.954
D64200112.425

D7122.0725022.48519.94312.59
D7210055.463
D7315059.96
D74200109.427

D8124.5265014.9911.14512.54
D8210038.974
D8315059.96
D8420097.435