A large number of small faults, generally intraformational faults (including bedding faults) have been found in THD coal measures in Tongchuan coal-mining District.
铜川矿区煤系地层中小断层十分发育,这些小断层一般为层间断层(包括层面断层)。
The results show that the influencing degree of the intraformational interbeds on the remaining oil depends on the thickness, spread scale and vertical position of the interbeds.