| 耿雪峰,吴志斌,曾江波,冯圣坚,顾东明.某采石场土-岩二元结构高边坡开挖稳定性评价及治理方法研究[J].矿产勘查,2026,2(2):389-402 |
| 某采石场土-岩二元结构高边坡开挖稳定性评价及治理方法研究 |
| Stability evaluation and treatment methods of excavation of a rock-soil mixed high slopes in a quarry |
| 投稿时间：2024-10-23 |
| DOI：10.20008/j.kckc.202602015 |
| 中文关键词: 采石场 高陡岩质边坡 稳定性分析 开挖支护 破坏机制 防治措施 |
| 英文关键词: quarry high and steep rock slope stability analysis excavation and support failure mechanism prevention measures |
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| 摘要点击次数: 104 |
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| 中文摘要: |
| 本文以深圳市塘朗山某采石场土岩混合高边坡为研究对象，综合运用现场调查、室内试验、数值模拟等手段，分析边坡潜在破坏模式，开展边坡稳定性分区研究并提出边坡支护方案。结果表明:塘朗山地块呈典型土岩混合高陡边坡形态，花岗岩基岩大面积出露，风化特征显著；边坡西、北区岩体主要发育一组 X型剪节理，易发生楔形体破坏；东区岩体发育一组陡倾节理和一组缓倾节理，易形成台阶状贯通滑移面；暴雨工况下，边坡抗滑稳定性不满足规范要求，变形集中在强—中风化层。结合边坡变形模式和工程经验，提出了“有限放坡+格构梁+锚杆(索)支护”的治理方案。数值分析结果显示，该方案有效提高边坡稳定性，边坡整体变形得到有效控制。研究成果对类似采石场边坡的治理及变形破坏机制分析具有参考意义。 |
| 英文摘要: |
| Taking a high soil-rock composite slope at a quarry in Tanglang Mountain, Shenzhen, as a subjectinvestigated, the potential failure mode of the slope is analyzed utilizing field investigation, laboratory tests, and nu-merical simulation. According to the deformation mode, slope stability zoning research and treatment are carried out.The results show that the Tanglang Mountain slope exhibits typical characteristics of typical rock-soil mixed high-steep slop, with extensive exposures of granite bedrock displaying pronounced weathering features. A group of X-type shear joints is mainly developed in the rock mass of the west and north areas of the slope, which is prone towedge failure. A group of steeply inclined joints and a group of gently inclined joints are developed in the rock massof the east area, which is easy to form a step-like penetrating slip surface. The anti-sliding stability of the slopedoes not meet the requirements of the code under rainstorm conditions, with deformation primarily concentrated inthe strongly to moderately weathered layers. Combined with the slope deformation mode and engineering experi-ence, the treatment scheme of "limited slope cutting + lattice beams + anchor rods (cables) support" is proposed.Numerical analyses show that this approach significantly enhances slope stability and effectively mitigates overalldeformation. The research results can provide reference significance for slope stability analysis of similar projects. |
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