露井联采区西排土场平台沉陷状况分析

Analysis on the Platform Subsidence about Western Dump in Open-underground Combine Mining

以平朔安家岭煤矿露井联采区为例,针对露井联采区西排土场顶部平台沉陷进行实地调查,利用CorelDraw制图软件测算样地内裂缝面积,从裂缝总面积,裂缝占样地面积比两方面进行比较,并从矿区地质构造、排土场构造、采掘工艺三方面对形成沉陷的原因进行分析,发现沉陷和裂缝情况很严重,排土场地质构造比较简单易形成裂缝;其非均匀沉降及综采放顶采煤方法扰动剧烈,导致地表沉陷。最后根据实际情况提出了防治措施和补偿机制,为今后的复垦工作提供理论依据。

The article take open-underground combine mining of Anjialingcoal mine as the example,investigated on the top platform area＇s subsidence and compared the aggregately cranny area to percent of aggregately area.The CorelDraw drawing software was used to calculate plot of cranny area.Analysis statistically formed subsidence and damaged character from the geological structure,the structure of dump and digging technique.The results showed that subsidence and cranny were very serious,geological structure of dump was easy to cranny and surfaced subsidence because of its non-uniform settlement and fierce artificial disturbancing of mining method.Finally,according to the actual situation,the prevention measure and compensation mechanism were presented,thus provides theoretical basis for the future reclaimed work.