Dini03数字水准仪在望儿山采空区沉降监测及地质灾害预测分析中的应用

Wangershan Settlement Monitoring and Geological Disasters Forecast by Dini03 Digital Level

焦家金矿望儿山分矿建矿30多年,由于存在历史遗留采空区和民采空区,加上近期浅部产量不断增加,地表沉降加速,导致多处山体地表出现塌陷区域。为了及时反映望儿山浅部山体塌陷区域以及周围、居民区域的地表变化情况,利用Dini03数字水准仪,采用线路测量方法,在采空区地表布设了7条观测线,70余个测点,进行连续岩移观测,获得该区域较全面的地表移动数据。近年来,该矿区在采空区地表以水准测量与钻探相结合的方式,进行采空区治理,物探和钻探工作探明了-60 m水平以上浅采空区的空间分布。通过对地表下沉监测数据与物探地下浅部采空区进行对照分析可知,南北线3行人道路旁,下沉值较大的6、15、16和17号点皆位于采空区正上方,说明物探结果可信。

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 dr/lling 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.