Dataset Direct Download Service (WFS): Natural Risk Prevention Plan “ground movements” — Regulatory Area — Commune de Chaville (92022)

Risk Prevention Plans (RPPs) are the key government instrument for risk prevention. Their objective is to control development in areas at risk. The development of a risk prevention plan generates a set of spatial data organised into several data sets. The same PPR may include spatial datasets containing: • main PPR encompassing perimeters (study perimeter, prescription perimeter, regulated scope); • restricted areas of the plan once approved. RPP regulations generally distinguish between ‘construction ban areas’, so-called ‘red areas’, where the hazard level is high and where the general rule is the construction ban; ‘areas subject to requirements’, known as ‘blue zones’ where the hazard level is medium and projects are subject to requirements adapted to the type of issue and areas not directly exposed to risks but subject to prohibitions or prescriptions; • hazard areas represented on the map of hazards used for risk analysis by crossing with the stakes, specifying for each zone the level of hazards to which it is exposed; • stakes (persons, property, activities, cultural or environmental heritage elements) threatened by a hazard and likely to be affected or damaged by it; • origins of risk, i.e. the real-world entity which, through its presence, represents a potential risk. This entity may be characterised by a name, a reference to an external object or a geographical object locating the entity风险预防计划（Risk Prevention Plans，RPPs）是政府开展风险防控的核心工具，其目标为管控风险区域内的开发活动。风险预防计划的编制会产生一系列空间数据，并被整合为多个数据集。 同一风险预防计划可包含以下空间数据集： • 主风险预防计划边界集：涵盖研究边界、法定边界、管控范围； • 计划获批后的限制管控区域集。风险预防计划的管控规则通常会区分两类区域：其一为“禁建区域”（即所谓“红色区域”），此类区域灾害等级较高，通用规则为禁止建设；其二为“合规管控区域”，亦称“蓝色区域”，该区域包含两类子区域：一类灾害等级为中等，项目需根据问题类型适配管控要求；另一类未直接暴露于风险但仍受禁令或管控要求约束； • 灾害区域集：即标注于通过与承灾体空间叠加分析开展风险评估的灾害地图上的区域，需为每个区域明确其面临的灾害等级； • 承灾体（stakes）：即受灾害威胁、可能受其影响或损毁的人员、财产、活动、文化或环境遗产要素； • 风险源：即通过其存在构成潜在风险的实体。该实体可通过名称、外部对象引用或定位该实体的地理对象进行表征。