摘要
以中煤华晋集团有限公司王家岭选煤厂矸石山为例,在综合治理的基础上,从温度和有毒气体浓度对矸石山自燃的火区治理效果两个方面进行了综合评析研究,通过对现场大地变形实测,王家岭选煤厂矸石山边坡的变形已经趋于稳定;通过数值模拟分析矸石山边坡30°和45°坡角的稳定性情况以及边坡在不同降雨工况下的稳定性情况,求解了相应的安全系数,即,治理后的矸石山边坡在天然状态下是稳定的,但在降雨工况下有失稳可能,需要及时采取科学防治措施,确保矸石山安全稳定。
Taking the waste dump of Wangjialing coal preparation plant of China Coal Huajin Group Co.,Ltd.as an example,based on the comprehensive treatment,the fire area control effect of spontaneous combustion waste dump was comprehensively evaluated and analyzed from the temperature and toxic gas concentration.The results showed that the deformation of the waste dump slope in Wangjialing coal preparation plant had become stable after field ground deformation measurement.The stability of the slope with angle of 30°and 45°and the stability of the slope under different rainfall conditions were analyzed by numerical simulation method,and the corresponding safety factor was solved.The gangue dump slope after treatment was stable in natural state,however there was a possibility of instability under rainfall conditions,so scientific prevention and control measures should be taken in time to ensure the safety and stability of waste dump.
作者
李雅阁
吴海军
Li Yage;Wu Haijun(China National Coal Group Corporation, Chaoyang, Beijing 100011, China;Mine Safety Technology Branch of China Coal Research Institute, Chaoyang, Beijing 100013, China;State Key Laboratory of Coal Resources High-Efficiency Mining and Clean Utilization, Chaoyang, Beijing 100013, China)
出处
《中国煤炭》
2020年第7期79-85,共7页
China Coal
关键词
矸石山自燃
边坡稳定性
FLAC3D
评析
waste dump spontaneous combustion
slope stability
FLAC3D
evaluation and analysis
