Towards the special water-bearing layer in quartz-sandstone with developed high-angle cracks, experiences are obtained from several shaft grouting constructions of Liuzhuang Coal Mine eastern area.

The paper elaborates the pragmatic problem of general and specific implication in conversation the purpose of -which is,by deducting Grice s conversation implication theory and cooperation principles,finds the universal rules for understanding and using general and specific implications so as to establish principles and methods possessing pragmatic interpreting power for speech phenomena.

Research on diagenetic control action of special reservoir in Sudeert Structural Belt;

Analysis of special reservoir distribution and hydrocarbon accumulation conditions in Shuguang-Leijia Area

Test research of vertical reducible joint of freezing shaft wall in the special stratum;