深部条带采空区注浆治理后场地稳定性评价  

Stability Evaluation of the Site after Grouting Treatment in Deep Strip Goaf

作　　者：赵文 ZHAO Wen(China Coal Science and Technology Ecological Environment Technology Co.,Ltd.,Beijing 100013;China Coal Technology&Engineering Circular Industry Research Institute(Shandong)Co.,Ltd.,Jining,Shandong 272000)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]中煤科工循环产业研究院(山东)有限公司,山东济宁272000

出　　处：《中国煤炭地质》2024年第12期44-48,55,共6页Coal Geology of China

基　　金：中国煤炭科工集团有限公司科技创新创业资金专项重点项目(2018-2-ZD007);天地科技股份有限公司科技创新基金(0206TDST0001);中煤科工生态环境科技有限公司生产力转化基金(0206KGST0007)。

摘　　要：为准确分析评价深部条带采空区注浆治理后的场地稳定性,保障采空区场地安全开展工程建设,以济宁岱庄煤矿深部条带采空区治理工程为依托,综合利用概率积分法、数值计算及现场监测定量分析注浆治理前后采空区地表变形规律,并据此评价采空区场地稳定性。研究结果表明:深部条带式非充分开采采空区开采期间地表下沉平缓,但后期残余变形大,对地表后续拟建建筑物影响大。为保障场地新建高层建筑物的安全性,需进行注浆治理。注浆充填治理后,采用概率积分法和数值计算分析预测项目区工后最大残余下沉量2~16 mm,地表最大残余倾斜值0.06 mm/m,对比未治理工况下的减沉率达到94%,验证注浆治理效果良好。根据采空区地表移动变形特征和变形量综合评价工后采空区场地为稳定场地,满足高层建筑物建设要求。In order to accurately analyze and evaluate the stability of the site after grouting treatment in the deep strip goaf,and ensure the safety of the goaf site and engineering construction,based on the deep strip goaf treatment project of Daizhuang coal mine in Jining,the probability integral method,numerical calculation,and on-site monitoring are comprehensively used to quantitatively analyze the surface deformation law of the goaf before and after grouting treatment,and the stability of the goaf site is evaluated accordingly.The research results indicate that the surface subsidence of the deep strip type incomplete mining goaf is gentle during the mining period,but the residual deformation is large in later,which has a significant impact on the subsequent construction on the surface.To ensure the safety of newly constructed high-rise buildings,grouting treatment is required.After grouting and filling treatment,the probability integral method and numerical calculation analysis were used to predict the maximum residual subsidence of the project area after construction,which is 2~16 mm,and the maximum residual inclination value of the surface is 0.06 mm/m.Compared with the untreated condition,the subsidence reduction rate reached 94%,verifying the good effect of grouting treatment.Based on the characteristics and deformation amount of surface movement in the goaf,the site is comprehensively evaluated as a stable site that meets the requirements for high-rise building construction.

关 键 词：深部条带采空区 注浆治理 地表变形 概率积分法 场地稳定性 岱庄煤矿 

分 类 号：TD32[矿业工程—矿井建设]