Simple download service (Atom) of the dataset: Plan to prevent natural risks of terrain movement — Commune de Bouloc — Zone d’aléa — Department of Tarn-et-Garonne

Area exposed to one or more hazards represented on the hazard map used for risk analysis of the RPP.
The hazard map is the result of the study of hazards, the objective of which is to assess the intensity of each hazard at any point in the study area. The evaluation method is specific to each hazard type. It leads to the delimitation of a set of areas on the study perimeter constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity.
For multi-random PPRNs, each zone is usually identified on the hazard map by a code for each hazard to which it is exposed.

All hazard areas shown on the hazard map are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure).
Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards.
Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).

用于RPP风险分析的灾害地图上所标注的、暴露于一种或多种灾害的区域。
该灾害地图为灾害研究的成果，其研究目标为评估研究区域内任意一点处各类灾害的强度。不同灾害类型需采用专属评估方法，据此可在研究范围内划定一系列区域，形成按灾害等级分级的区划。为研究区域内任意给定点位赋值灾害等级时，需兼顾危险现象的发生概率与强度水平。
针对多随机PPRNs，其灾害地图上的每个区域通常会通过其所暴露的各类灾害对应的专属编码进行标识。
灾害地图上标注的所有灾害区域均需纳入本类对象范畴。受防护结构保护的区域也必须以特定方式（若有必要）进行表征，因为此类区域始终被视为处于灾害风险之中（例如防护结构发生破损或效能不足的情况）。
灾害区划可作为衍生数据集进行描述，前提是其基于多源计算、建模或观测得到的灾害数据综合生成。此类源数据不属于本类对象的范畴，而是归属于另一项针对灾害认知的标准规范。
研究区域内的部分区域被归类为"无灾害或灾害影响可忽略区域"，即经研究确认灾害强度为零的区域。此类区域不属于本类对象范畴，也无需作为灾害区划进行表征。不过针对天然RPP，监管区划可能会将未受灾害影响的区域划定为规定区域（详见PPR类别的定义）。