Abstract:

Wangershan Cent mineral of Jiaojia Gold Mine in eastern Laizhou Jincheng territory in Shandong Province has been constructed over 30 years.Due to the historical gob and the privately owned gob，as well as the recent increasing production at the shallow area，resulting in the surface subsidence accelerated and appeared at many mountain regions.In order to reflect the Wangershan mine shallow collapse areas and surrounding surface changes of office and residents area，7 observation lines and over 70 measuring points have been emplaced using the Dini03 digital level and line measurement method，then，conducted continuous the rock movement observation and access to the region more comprehensive surface movement data.In recent years，the gob governance，the geophysical and the drilling work，were carried out by the ways of combining leveling and drilling in gob surface，and proved the spatial distribution of a more shallow level of -60 m gob.And the surface subsidence monitoring data and geophysical shallow underground gob results were analyzed to know that both the North-South Line of 3 walkway along roadsides and the larger subsidence value of points 6，15，16，17 are located just above the mined-out area，indicating that geophysical results are credible.

Key words: gob governance, collapse, digital level strument