废弃石场地质环境恢复和综合治理工程研究——以深圳市龙岗区东部红花岭石场为例

Ecological Restoration and Comprehensive Treatment of an Abandoned Quarry-A Case Study of Eastern Honghualing Quarry Longgang of District,Shenzhen

深圳市目前有多处废弃矿山存在地质环境问题,以深圳市龙岗区东部红花岭石场为例,通过对采石场现状边坡破坏特征、植被分布、水土流失等进行野外调查,详细对边坡整体稳定性和局部稳定性进行分析,对采石场边坡提出清坡、SNS主动防护网+锚杆、钢筋混凝土格构梁+锚杆、排水等综合加固措施,地质环境恢复采用格构间堆生态袋、植生槽种植爬藤灌木、喷混植生复绿等方案。对施工过程及施工完成后监测结果进行分析,表明边坡变形已趋于稳定,采石场环境得到恢复,该治理方案切实可行,可为同类废弃石场地质环境恢复和综合治理提供参考。

Currently,there are many abandoned quarries having geological and environment hazards in Shenzhen.The case history of the Eastern Honghualing Quarry of Longgang District,Shenzhen is presented in this paper as an example for the detailed global and local stability analysis on the slope throughout the field investigations.The current slope failure modes,vegetation distribution and the soil erosion of the quarry are investigated.Comprehensive remediation measures such as slope clearing,SNS active protection net+ground anchor,reinforced concrete grid beams+ground anchor and drainage ditches are proposed for the quarry slopes.The ecological and environment restoration program include the stacking ecological bags within the grid beams,planting of climbing vines and shrubs in the planting channels and spraying and mixing plants to restore the vegetation.The analysis of the construction process and the monitoring results after the construction shows that the slope deformation has tended to be stable,and the quarry has been environmentally restored.The remediation program is feasible and provides a reference for the restoration and comprehensive treatment of the ecological and environmental issues of the similar abandoned quarries.