| 开采扰动下不整合面附近岩土体变形特征 |
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| 引用本文： | 张燕,纪洪广,王金安. 开采扰动下不整合面附近岩土体变形特征[J]. 湖南科技大学学报(自然科学版), 2012, 27(2): 13-17 |
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| 作者姓名： | 张燕 纪洪广 王金安 |
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| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目 |
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| 摘 要： | 以宁夏石嘴山西区3号煤层开采为工程背景,借助相似模型试验、得到煤层开采引起的覆岩裂隙动态发育过程以及不整合面附近裂隙发育特点.通过数值模拟计算,得到不整合面附近岩土体位移变形特征.研究发现:开采扰动条件下,不整合面附近由于两侧岩土体材料不同发生变形不协调,致使不整合面两侧发生挤压或开裂现象.开裂区将产生大量离层,为第四系松散含水层向煤系地层进行横向水力补给提供涌水通道.
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| 关 键 词： | 开采扰动 地层不整合 岩土体 变形不协调 |
Deformation characteristics of rock and soil caused by mining near the unconformity |
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| ZHANG Yan , JI Hong-guang , WANG Jin-an. Deformation characteristics of rock and soil caused by mining near the unconformity[J]. Journal of Hunan University of Science & Technology(Natural Science Editon), 2012, 27(2): 13-17 |
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| Authors: | ZHANG Yan JI Hong-guang WANG Jin-an |
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| Affiliation: | (School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | Taking No.3 coal seam mining as the engineering background,through similar material model test,fractures development process and the development characteristics near the unconformity was obtained.Through numerical calculation,deformation characteristics of rock and soil near the unconformity was realized.It’s found that: In the process of No.3 coal seam mining,due to the difference of the two materials near the different side of the unconformity,the deformation of the two sides is inconsistent.Extrusion and crack take place caused by inconsistent deformation.Numerous of a abscission develop in crack zone,which supply the seepage channels from quaternary aquifer to coal-bearing stratum. |
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| Keywords: | mining disturbance unconformity stratum rock and soil inconsistent deformation |
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