1. Ph.D. Student, College of Engineering, China Univ. of Geosciences, Wuhan 430074, China.
2. Professor, College of Engineering, China Univ. of Geosciences, Wuhan 430074, China (corresponding author).
3. Vice Manager, HDD Crossing Branch Company of China Petroleum Pipeline Bureau, Langfang 065000, China; and Ph.D. Student, College of Engineering, China Univ. of Geosciences, Wuhan 430074, China.
4. Graduate Student, College of Engineering, China Univ. of Geosciences, Wuhan 430074, China.