bottom map

The soil map shows the dominant composition of the soil in the first 2 meters below ground level. In the interests of simplification, a classification in sand, loam or clay per square kilometre has been chosen. This was drawn up on the basis of the soil type map and supplemented with drilling rigs of own drillings and drillings found in the Database Subsurface Flanders. In the context of rainwater policy and the principles of optimal separation with the aim of promoting the natural runoff and infiltration of rainwater, it is important to have an insight into the soil condition and infiltration sensitivity of the upper soil layer in Antwerp. In this way, the integration of water management into urban design can be controlled more effectively and efficiently, as well as the localisation of infiltration-prone areas for future construction projects. For example, city authorities regularly receive questions from contractors, architects and design offices about the possibility of infiltration on a particular plot. This information is also important in the design and implementation of public urban renewal works. The layout of geohydrological maps can contribute to a better alignment between spatial planning, public space design, green management and water management. It is quite possible to save costs by combining multiple management aspects with the construction of green-blue structures: tackling flooding, combating soil desiccation, developing more urban nature and biodiversity. Finally, these data are used as substantiation in the preparation of the rainwater plan; a plan indicating at district level how much infiltration and/or buffer capacity is desirable and in which forms (e.g. collective wadi, canal or pond). The contract concerns the preparation of four geohydrological maps, in particular: a soil map, a groundwater map (meter - ground level) with an annual average depth of the phreatic groundwater table below street level, a groundwater map with annual average levels relative to the topographic reference level (meter -/+ TAW) and an infiltration map of the Antwerp region. The study is part of the characterisation of the subsurface of Antwerp with a view to the localisation of infiltration-prone areas for future construction projects. These maps describe the entire regionthe territory of Antwerp (city of Antwerp with its 9 districts and submunicipalities), with the exception of the Antwerp port area. For the right bank of the Antwerp port area, the possibilities of rainwater infiltration and buffering have already been investigated (What about rainwater in the Antwerp port area?, IMDC iov Port of Antwerp and Alfaport, 2013). In function of the calibration and calculation of groundwater and groundwater data, it was important to integrate the port area into the model area. . The study area is bounded to the north, east, south and west respectively by the national border and municipalities of Berendrecht, Deurne, HobokenStabroek, Kapellen, Brasschaat, Schoten Wijnegem, Wommelgem, Borsbeek, Mortsel, Edegem, Aartselaar, Hemiksem and LinkeroeverZwijndrecht.本土壤图展示了地表以下前2米范围内土壤的主导组成成分。为简化呈现，本数据集采用每平方公里尺度下的砂土、壤土或黏土分类体系。该图基于土壤类型图编制，并补充了自有钻探作业获取的钻探资料，以及弗兰德斯地下数据库（Database Subsurface Flanders）中收录的钻探数据。针对安特卫普地区，结合雨水政策目标与最优分流原则——旨在促进雨水的自然径流与下渗——明晰上层土层的土壤状况与下渗敏感性至关重要。借此可更高效、精准地管控水管理与城市设计的融合工作，同时为未来建筑项目定位适宜下渗的区域。例如，市政当局时常会收到承包商、建筑师及设计事务所关于特定地块下渗可行性的咨询。此类信息在城市公共更新工程的设计与实施中同样具有重要价值。水文地质图的编制，可助力空间规划、公共空间设计、绿地管理与水管理之间的协同优化。通过将多项管理要素与蓝绿基础设施建设相结合，完全能够实现成本节约：包括洪涝治理、土壤干旱防治、城市自然生态与生物多样性提升等。最终，这些数据将作为编制雨水规划的佐证依据：该规划需明确各街区所需的下渗及/或缓冲容量，以及对应的实现形式（例如集体式旱谷、运河或蓄水池）。本合同涉及四张水文地质图的编制，具体包括：土壤图、以地面为基准（单位：米）的地下水位图——展示街道地表以下潜水地下水位的年平均埋深、以地形参考基准面为参照的地下水位年平均分布图（单位：米，±TAW），以及安特卫普地区下渗潜力图。本研究属于安特卫普地下空间特征刻画工作的一部分，旨在为未来建筑项目定位适宜下渗的区域。上述地图覆盖安特卫普全域（含9个行政区及次级市政单元），但安特卫普港区除外。针对安特卫普港区右岸，其雨水下渗与缓冲潜力已开展过相关研究（《安特卫普港区雨水治理探析》，IMDC委托安特卫普港务局与Alfaport，2013年）。为校准地下水模型并计算地下水数据，需将港区纳入模型研究范围。本研究区域的北、东、南、西四方分别以国界及贝伦德里赫特（Berendrecht）、德尔讷（Deurne）、霍博肯-斯塔布鲁克（Hoboken-Stabroek）、卡彭（Kapellen）、布拉沙特（Brasschaat）、斯科滕-维内姆（Schoten-Wijnegem）、沃梅尔盖姆（Wommelgem）、博尔斯贝克（Borsbeek）、莫特塞尔（Mortsel）、埃德赫姆（Edegem）、阿尔瑟拉尔（Aartselaar）、赫米克瑟姆（Hemiksem）以及林克罗弗-津德雷赫特（Linkeroever-Zwijndrecht）等市镇为界。