摘要
为研究排土场边坡变形规律与灾害预警等级,以宜化露天煤矿首采区倾斜内排土场边坡为工程背景,划分了堆积松散体的变形阶段,并研究各个阶段的变形特征;结合排土场3个监测点数据分析了排土场变形特征,并设置了排土场的预警阈值。研究结果表明:排土场分为瞬时变形、主固结变形和次固结变形3个变形阶段;排土场在主固结变形阶段表现为先期快速变形,后期缓慢变形;排土场主要为沉降变形,水平变形受到临空面与地层倾角影响;快速变形阶段位移量约为整体监测量的1/2~2/3。
In order to study the deformation law and disaster warning level of dump slope,taking the slope of inclined internal dump in the first mining area of Yihua Open-pit Coal Mine as the engineering background,the article divides the deformation stages of the accumulation loose body,and studies the deformation characteristics of each stage.Combined with the data of three monitoring points in the dump,the article analyzes deformation characteristics of the dump,and sets the early warning threshold of the dump.The results show that the dump is divided into three deformation stages:instantaneous deformation,main consolidation deformation and secondary consolidation deformation.The main consolidation deformation stage of the dump is characterized by rapid deformation in the early stage and slow deformation in the later stage.The dump is mainly settlement deformation,and the horizontal deformation is affected by the free surface and the dip angle of the stratum.The displacement of the rapid deformation stage is about 1/2~2/3 of the overall monitoring amount.
作者
钟声
张军
闫杰
吾木提江·许库尔
ZHONG Sheng;ZHANG Jun;YAN Jie;Wumutijiang·xukuer(Xinjiang Yihua Mining Co.,Ltd.,Changji 831100,China;China Coal Research Institute Co.,Ltd.,Beijing 100013,China;Emergency Management Bureau of Changji Mulei County,Changji 831100,China)
出处
《露天采矿技术》
CAS
2024年第1期6-10,共5页
Opencast Mining Technology
