摘要
煤炭资源开采产生的沉陷变形会对土地资源造成严重破坏,因此针对巨厚松散层下煤炭开采产生的地面沉陷变形分布规律的研究具有十分重要的意义。以山东济宁横河煤矿为例,运用概率积分法分别建立了主断面和采区任意点的预测模型,预测了2#、3#煤层先后开采后地表下沉、倾斜、曲率、水平移动、水平变形等特征。预测结果显示,横河矿区下沉面积为78hm2,最大下沉值达到9.987m,与现场调查的实际情况基本吻合。由于横河矿区由巨厚松散层覆盖,相比一般采矿条件下,地表沉陷具有地表下沉系数较大、地表最大下沉值较大、水平移动系数和水平移动值较正常值偏大、沉陷范围大、拐点偏移距较小等特点。
Ground subsidence can cause serious land damage,so researching the laws of ground subsidence under thick loose overburden is critically significant.We present studies of mining-related surface subsidence of the Henghe Coal Mine at Jining in Shandong Province.Based on the probability integration method,this paper establishes the prediction models in mining areas and predicts such values as the subsidence,curvature,tilt,horizontal deformation and movement of the second and third coal beds.The results show that the size of the basin is 78hm2 and the subsidence value is 9987mm.As the Henghe coal area differs from the general coal area in its cover of the thick and loose overburden,its surface subsidence presents the following features such as bigger subsidence coefficient,horizontal movement coefficient,subsidence area and smaller inflection point offset.
出处
《地质科技情报》
CAS
CSCD
北大核心
2014年第4期219-224,共6页
Geological Science and Technology Information
关键词
横河煤矿
巨厚松散层
地面沉陷
概率积分法
Henghe Coal Mine
thick and loose overburden
ground subsidence
probability integration method
