不规则洞口情况 2 29 k 12 k 13 h, k 2 g3 k kgl +ka2 +k3+kg4 k3 k21+k2+k2 k1 ktest 1 k13k27+k28+k不规则洞口情况 h2 h1 h3 kq1 kq 2 kq3 kq 4 k11 k12 k13 k21 k22 k23 k24 k25 k26 k27 k28 k29 k3 1 2 3 4 3 1 1 1 k k k k k k q q q q + + + + = 1 1 2 1 2 2 2 3 1 1 1 1 k k k k kq + + + = 1 2 2 4 2 5 2 6 2 1 1 1 k k k k kq + + + = 1 3 2 7 2 8 2 9 4 1 1 1 k k k k kq + + + =