Study on sequence stratigraphy applied to coalbed methane resource assessment桑树勋, 秦勇, 范炳恒, 姜波, 傅雪海113-118
Thermodynamics pattern and features of coal metamorphic evolution in Southwest Shandong姚多喜, 支霞臣, 唐修义119-122
Research about the principles and the applications of three types of the GPR in the world刘传孝, 蒋金泉, 杨永杰, 谭云亮123-127
The coal mining practice of reducing waterproof coal pillars in Panxie Mining Area张文艺, 汪文革, 彭卫东, 冯震海, 疏开生128-133
Model and its application on the evaluation of degree of difficulty of top coal caving in steep seam朱川曲, 缪协兴134-138