Non-mining rupture of coal mine shaft is a new kind of mine geological disaster. There are some standpoints on the reason of the shaft lining rupture, but a new option that the horizontal tectonic stresses lead to the rupture of the mine shaft is appeared after the shaft lining rupture occurred in theYanteng-Xuhuai diggings. This paper analyzes the relationship between geostresses and the shaft lining rupture in the diggings. The results demonstrated the rupture of the mine shaft and horizontal tectonic stress is not very closely linked.
Since the 1980s, a new mine geological hazard–nonmining fracture of shaft has appeared in Yanteng- Xuhuai Area, China, that is, under the condition that coal mine shaft is not affected by underground mining, serious deformation and rupture with the shaft. The shaft is the throat of mine, the non-mining sudden rupture of shaft inYanteng-Xuhuai Area has posed threat to the safety of ten thousands of people under the mine,which seriously affects the normal production of coal mine. For many years, a lot of science and technology workers who work on mine construction, mining, geological study have carried out extensive investigation and research work on non-mining rupture of shaft inYanteng-Xuhuai Area[1–5]. After the vertical shaft for coal mine in Yanteng- Xuhuai area has broken, there is a view thinking that the vertical shaft rupture is related with earthquake occurrence in this area and activities of Tan-Lu fault, the vibration force generated by earthquake and dislocation resulting from movement of active faults (i.e., the horizontal tectonic stress) are the main causes for rupture of vertical shaft. However, from the view of earthquake and active fault condition, this view is not desirable. This is because:
During the shaft rupture, no catastrophic destructive earthquake takes place in the study area.