内排土场边坡近自然重塑渗流及孔隙水压力特征研究
Research on seepage and pore water pressure characteristics of internal dump near-natural remodeling
-
摘要: 为研究我国东部草原区某露天矿边坡在近自然修复模式下的渗流及孔隙水压力特征，以GEO软件中SEEP/W模块为父项，拟合SLOPE/W模块对该矿区强降雨条件下的边坡抗侵蚀特征，渗流路径变化情况以及孔隙水压力重分布情况进行模拟分析。结果表明：对原内排土场边坡进行反S型重塑后，边坡抗侵蚀特性提升明显，单台阶上部及下部区域台阶坡面角降低，区域内径流流速下降，降雨入渗程度增加；受坡面形态改变影响，原内排土场边坡各级台阶坡面处均出现水流渗出现象，水土流失程度较高；重塑后，15 m及20 m台阶重塑模型渗流密集程度增加，内排土场坡面未表现出明显出水现象；边坡顶部孔隙水压力实现重分布，负孔隙水压力分布范围增加，过渡区域面积较为均匀，有效缓解了因不同岩层渗透系数差异性而导致的边坡上部岩层局部积水现象。Abstract: In order to study the characteristics of seepage and pore water pressure of an open-pit mine slope in the grassland area of eastern China under the near-natural restoration mode, this paper takes the SEEP/W module in GEO software as the parent item and fits the SLOPE/W module to simulate and analyze the characteristics of slope resistance to hydraulic erosion, the change of seepage path and the redistribution of pore water pressure under the condition of heavy rainfall in the mining area. The results show that after the anti-S-type reconstruction of the original internal dump slope, the resistance to hydraulic erosion of the slope is significantly improved, the slope angle of the upper and lower steps of a single step is reduced, the flow velocity of regional inner diameter flow is reduced, and the degree of rainfall infiltration is increased. Affected by the change of slope surface shape, water seepage occurs at all levels of the slope of the original inner dump slope, and the degree of water loss and soil erosion ishigh. After remolding, the seepage density of 15 m and 20 m bench remolding models increased, and there was no obvious water outflow on the slope of inner waste dump. The pore water pressure at the top of the slope is redistributed, the distribution range of negative pore water pressure is increased, and the area of the transition area is relatively uniform, which effectively alleviates the local ponding phenomenon in the upper rock stratum of the slope caused by the difference of permeability coefficient of different rock strata.
-
-
[1] 马晓敏.矿山生态修复成两会热词[N].中国矿业报，2022-03-16（001）. [2] 卞正富，于昊辰，韩晓彤.碳中和目标背景下矿山生态修复的路径选择[J].煤炭学报，2022，47（1）：449-459. BIAN Zhengfu, YU Haochen, HAN Xiaotong. Solutions to mine ecological restoration under the context of carbon[J]. Journal of China Coal Society, 2022, 47（1）: 449-459.
[3] 尚涛，韩流，舒继森，等.节地减损开采模式下边坡结构及应力发展规律[J].煤炭学报，2019，44（12）：3644-3654. SHANG Tao, HAN Liu, SHU Jisen, et al. Slope structure and stress development rule under mining mode of land saving and ecological detraction[J]. Journal of China Coal Society, 2019, 44（12）: 3644-3654.
[4] 胡振琪.我国土地复垦与生态修复30年：回顾、反思与展望[J].煤炭科学技术，2019，47（1）：25-35. HU Zhenqi. The 30 years’ land reclamation and ecological restoration in China: review，rethinking and prospect[J]. Coal Science and Technology, 2019, 47（1）: 25-35.
[5] 赵洪宝，魏子强，罗科，等.降雨工况下露天矿排土场边坡稳定性与治理措施[J].煤炭科学技术，2019，47（10）：67-74. ZHAO Hongbao, WEI Ziqiang, LUO Ke, et al. Stability and control measures of open-pit mine dump slope under rainfall conditions[J]. Coal Science and Technology, 2019, 47（10）: 67-74.
[6] 吕刚，李叶鑫，宁宝宽，等.暴雨作用下排土场平台-边坡系统土壤侵蚀过程模拟研究[J].煤炭学报，2021， 46（5）：1463-1476. LYU Gang, LI Yexin, NING Baokuan, et al. Soil erosion process of platform-slope system of dump under heavy rain[J]. Journal of China Coal Society, 2021, 46（5）: 1463-1476.
[7] 吴丽萍，郑海峰，吴国玺，等.降雨侵蚀力对露天矿排土场边坡水土流失的影响研究[J].水文，2018，38（4）：1-5. WU Liping, ZHENG Haifeng, WU Guoxi, et al. Influence of rainfall erosivity on soil loss in slope dump of opencast colliery[J]. Journal of China Hydrology, 2018, 38（4）: 1-5.
[8] 陈春谏，赵耀江，张红鸽，等.不同加载速率下原煤与型煤的力学渗流特性对比研究[J].矿业安全与环保，2019，46（1）：23-27. CHEN Chunjian, ZHAO Yaojiang, ZHANG Hongge, et al. Comparative study on mechanical and permeability characteristics of raw coal and briquettes under different loading rates[J]. Mining Safety & Environmental Protection, 2019, 46（1）: 23-27.
[9] 韩流.岩体结构面稳态渗流时的水压分布规律研究[C]//第八届露天开采专业科技学术研讨会论文集.北京：中国煤炭学会，2019：57-69. [10] 韩流，舒继森，尚涛，等.颗粒尺寸及倾角对渗流水压力分布的影响研究[J].采矿与安全工程学报，2021， 38（3）：592-601. HAN Liu, SHU Jisen, SHANG Tao, et al. The influence of particle size and inclination angle on seepage water pressure distribution[J]. Journal of Mining & Safety Engineering, 2021, 38（3）: 592-601.
[11] HEIDARI M, KARAMI V. Effects of different mycorrhiza species on grain yield, nutrient uptake and oil content of sunflower under water stress[J]. Journal of the Saudi Society of Agricultural Sciences, 2014,13: 9-13. [12] 李鹏飞，张兴昌，郝明德，等.植被恢复对黄土高原矿区重构土壤理化性质、酶活性以及真菌群落的影响[J].水土保持通报，2019，39（5）：1-7. LI Pengfei, ZHANG Xingchang, HAO Mingde, et al. Effects of vegetation on soil physicochemical properties, enzyme activities, and fungal community of reconstructed soil in a mining area on loess plateau[J]. Bulletin of Soil and Water Conservation, 2019, 39（5）: 1-7.
[13] MENTA C, CONTI F D, PINTO S, et al. Monitoring soil restoration in an open-pit mine in northern Italy[J]. Applied Soil Ecology, 2014, 83: 22-29. [14] 林伟华，伍永刚，毛典辉，等.基于朴素贝叶斯的区域水土流失评价方法研究[J].人民黄河，2007（12）：71-73. [15] 雷少刚，卞正富，杨永均.论引导型矿山生态修复[J].煤炭学报，2022，47（2）：915-921. LEI Shaogang, BIAN Zhengfu, YANG Yongjun. Discussion on the guiding restoration for mine ecosystem[J]. Journal of China Coal Society, 2022, 47（2）: 915-921.
[16] 夏嘉南，李恒，雷少刚.自然坡线提取及边坡近自然整形应用——以草原矿区为例[J].干旱区资源与环境，2021，35（6）：80-88. XIA Jianan, LI Heng, LEI Shaogang. Natural slope line extraction and application of slope near-natural shaping: Taking grassland mining area as an example[J]. Journal of Arid Land Resources and Environment, 2021, 35（6）: 80-88.
[17] 夏嘉南，李根生，卞正富，等.水文保留曲面下草原露天矿内排土场地貌近自然重塑[J].煤炭学报，2022（7）：2756-2767. XIA Jianan, LI Gensheng, BIAN Zhengfu, et al. Reshaping of near-natural landform of the internal dump in the grassland open-pit mine based on HPCS[J]. Journal of China Coal Society, 2022（7）: 2756-2767.
[18] 李恒，雷少刚，黄云鑫，等.基于自然边坡模型的草原煤矿排土场坡形重塑[J].煤炭学报，2019，44（12）：3830-3838. LI Heng, LEI Shaogang, HUANG Yunxin, et al. Reshaping slope form of grassland coal mine dump based on natural slope model[J]. Journal of China Coal Society, 2019, 44（12）: 3830-3838.
[19] 田光，韩流，舒继森，等.孔隙水压力重分布对排土场边坡稳定性影响规律研究[J].煤矿安全，2021，52（8）：239-242. TIAN Guang, HAN Liu, SHU Jisen, et al. Influence of pore water pressure redistribution on slope stability of waste dump[J]. Safety in Coal Mines, 2021, 52（8）: 239-242.
[20] 张沛沛，刘怡真.煤炭开采沉陷与积水对土壤特性的影响研究[J].矿业安全与环保，2018，45（3）：33-36. ZHANG Peipei, LIU Yizhen. Study on the impacts of coal mining subsidence and ponding on the soil characteristics[J]. Mining Safety & Environmental Protection, 2018, 45（3）: 33-36.
-
期刊类型引用(3)
1. 柴茂庭，刘东珲，齐翔，刘籽钰. 哈尔乌素露天煤矿内排土场高台阶渗流稳定性分析. 露天采矿技术. 2024(01): 79-83 . 
百度学术
2. 刘泉，王晨. 降雨条件下某矿山排土场边坡稳定性分析. 黄金. 2024(04): 96-98 . 百度学术
3. 王振伟，李元浩，韦永豪，黄科伟，姜海涛，程瑶. 降雨入渗作用下基底倾角对内排土场边坡变形的影响. 煤矿安全. 2024(06): 169-175 . 本站查看
其他类型引用(1)
计量
- 文章访问数: 16
- HTML全文浏览量: 0
- PDF下载量: 10
- 被引次数: 4
下载:
