| 郑晓彦,王竑,朱斌,高雪,高玉良,张晨阳,车文越,马柯.新型矿山陡坡生态修复基材抗裂抗冲刷试验研究[J].矿产勘查,2024,15(10):1947-1956 |
| 新型矿山陡坡生态修复基材抗裂抗冲刷试验研究 |
| Experimental study on crack and erosion resistance of new mining steep slope ecological restoration substrate |
| 投稿时间：2023-08-04 修订日期：2023-12-11 |
| DOI：10.20008/j.kckc.202410020 |
| 中文关键词: 黏土 瓜尔胶 蒸发特性 开裂试验 冲刷试验 |
| 英文关键词: clay guar gum evaporation characteristics cracking test scour test |
| 基金项目:本文受江苏省地质矿产勘查局科研项目（2023KY15）与国家自然科学基金项目（41877212）联合资助。 |
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| 中文摘要: |
| 喷播于裸露的高陡矿山岩坡的传统修复基材在自然气候条件下会因蒸发而失水开裂；因降水而产生冲蚀破坏。为研究新型生态修复基材的抗裂抗冲刷特性，本文采用瓜尔胶对基材黏土进行改良，通过蒸发开裂试验、抗冲刷试验，探究瓜尔胶改良基材黏土试样的保水抗开裂特性及抗冲刷特性，结合扫描电镜试验对改良黏土的微观作用机理进行了研究分析。结果表明，瓜尔胶改良黏土试样保水特性得到提升，且试样的总蒸发量随着瓜尔胶含量的提升而降低；瓜尔胶改良黏土试样抗开裂性能得到提升，随着瓜尔胶含量的提升试样的裂隙数量及裂隙发育程度出现先增加后减少的趋势，且在含量为0.1%时未出现明显开裂；瓜尔胶改良试样抗冲刷性能大幅度提升，当瓜尔胶含量达到0.2%之后，试样未出现明显冲蚀破坏。当瓜尔胶含量为0.3%时，试样的综合抗裂抗冲刷特性最好。 |
| 英文摘要: |
| The traditional repair substrate sprayed on the exposed high and steep mine slope will lose water and crack due to evaporation and produce erosion damage due to precipitation under natural climate conditions. In order to study the anti-cracking and anti-scouring properties of the new ecological restoration substrate， guar gum was used to improve the clay of substrate. Through evaporation cracking test and erosion resistance test， the water-retaining and anti-cracking characteristics and anti-erosion characteristics of guar gum improved clay samples were investigated， and the microscopic improvement mechanism of the improved clay was studied and analyzed in combination with scanning electron microscopy test. The results showed that the water retention characteristics of the modified clay samples were improved， and the total evaporation of the samples decreased with the increase of guar gum content. With the increase of guar gum content， the number of cracks and the degree of crack development of the sample increased first and then decreased， and there was no obvious crack when the content was 0.1%. When the content of guar gum reached 0.2%， the erosion resistance of the modified guar gum was greatly improved. When the content of guar gum is 0.3%， the comprehensive cracking and erosion resistance of the sample is the best. |
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