| 秦帮策,许亚东,任建帅,王瑞辉,秦明辉,郭海丽,刘宇轩,周江.河北宣化山间盆地地质灾害易发性评估及成因机理[J].矿产勘查,2025,16(7):1750-1763 |
| 河北宣化山间盆地地质灾害易发性评估及成因机理 |
| Assessment of geological hazards susceptibility and genesis mechanism in the Xuanhua Mountainous Basin, Hebei Province |
| 投稿时间：2023-12-03 |
| DOI：10.20008/j.kckc.202507017 |
| 中文关键词: 宣化山间盆地 地质灾害 易发性评估 构造岩相学孕灾条件 成因机理 |
| 英文关键词: Xuanhua Mountain Basin geological hazards assessment of the susceptibility hazards-predisposing conditions of structural petrology genetic mechanism |
| 基金项目:本文受河北省省级财政一般公共预算资金项目(343-0402-YBN-GY1N)资助。 |
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| 中文摘要: |
| 宣化山间盆地位于内蒙古高原和华北平原过渡带，区内地质灾害对人居环境安全造成潜在威胁。对宣化山间盆地进行地质灾害易发性评估和成因机理研究，有助于制订地质灾害综合防治规划，对促进后冬奥时期区域社会经济发展具有积极意义。本文通过 1∶5万地质灾害和构造岩相学调查，分析了宣化山间盆地地质灾害发育特征和影响因素，评估了地质灾害易发性，讨论了地质灾害的构造岩相学孕灾条件和成因机理，并提出综合防治建议。研究结果表明:宣化山间盆地地质灾害易发性分区以低易发区为主导，面积为 1207.86 km2，分布在基岩山区和盆山转换结合带；从基岩山区到沉积盆地，构造岩相学孕灾强度具有“较强—强—弱”横向递变规律，白云岩岩体区内碎裂岩化相较强，岩体结构稳定性低，是地质灾害的主要载体；基岩山区和盆山转换结合带是宣化山间盆地地质灾害防治重点区，对崩塌和滑坡典型地质灾害建议分别采用挂网锚喷支护和桩板式抗滑挡进行治理，同时加强地质灾害监测。本研究可为宣化山间盆地减灾防灾、国土规划及生态修复规划提供科学参考。 |
| 英文摘要: |
| The Xuanhua Mountain Basin is located in the transitional zone between the Inner Mongolia Plateauand the North China Plain, where geological hazards pose a potential threat to the safety of the human settlement en-vironment. Conducting research on geological hazards susceptibility assessment and genetic mechanisms in the Xua-nhua Mountain Basin contributes to the development of comprehensive geological hazards prevention and controlplans, and holds positive significance for promoting regional socio-economic development after the post-WinterOlympics. This study, based on a 1∶50000 scale investigation of geological hazards and structural petrology, ana-lyzes the development characteristics and influencing factors of geological hazards in the Xuanhua Mountain Basin,assesses the susceptibility to such geological hazards, discusses the hazards -predisposing conditions and geneticmechanisms from a structural petrological perspective, and proposes comprehensive prevention and control mea-sures. The research results indicate that the geological hazards susceptibility zoning in the Xuanhua Mountain Basinis dominated by low-susceptibility areas, covering an area of 1207.86 km2, which are distributed in the bedrockmountainous regions and the mountain-basin transition zones. From the bedrock mountainous areas to the sedimen-tary basin, the hazards-predisposing intensity of structural petrology exhibits a lateral gradational pattern of "rela-tively strong – strong – weak". Within the dolomite rock masses, the cataclasite phase is relatively developed, re-sulting in low rock mass structural stability, which serves as the primary carrier for geological hazardss. The bedrockmountainous areas and the mountain-basin transition zones are key regions for geological hazards prevention andcontrol in the Xuanhua Mountain Basin. For typical geological hazardss such as collapses and landslides, it is rec-ommended to implement shotcrete with wire mesh and bolt support for collapses, and pile-slab anti-slide retainingwalls for landslides, while simultaneously strengthening geological hazards monitoring. This study can provide scien-tific reference for hazards mitigation and prevention, territorial planning, and ecological restoration planning in theXuanhua Mountain Basin. |
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