Characteristics and mechanism of Jiaocheng ground fissure in Taiyuan Basin, China

The Fenwei Basin, which has 612 developed ground fissures, is the most concentrated and severe area in China even world for fissure hazards. Jiaocheng Taiyuan Basin known being longest length causing damage impact China. To discover origin of fissure, surveying, trenching, geophysical exploration were used to study its geological basis, developmental characteristics, genetic processes. With a total 46 km an bandwidth 80–120 m, it one fissures found world. located on hanging wall fault, NE strike quite consistent with this fault. Houses, roads, fields, other structures have all been damaged varying degrees by fissure. common movements are vertical slip, horizontal tension, right-lateral slide. According trenching shallow seismic profiling, synsedimentary features. was formed due interaction several forces. First, fault shifted because regional extension, creating rupture system surface strata. Pumping activity contributed formation current This research significant implications understanding mechanics preventing mitigating fissures.