Plan for the prevention of natural risks of landslide — Municipality of Piquecos — Document — Department of Tarn-et-Garonne

The Risk Prevention Plans (PPR) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor development in areas exposed to a major risk. The PPRs are approved by the prefects and generally carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through building prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.). These plans may be under development (prescribed), implemented in advance or approved. The RPP file contains a presentation note, a regulatory zoning plan and a regulation. Other graphic documents that are useful for understanding the approach (e.g. hazards, issues, etc.) can be attached. Each PPR is identified by a polygon that corresponds to the set of municipalities the scope of the prescription when it is in the prescribed state; and the envelope of restricted areas when it is in the approved state. This geographical table allows to map existing PPRNs on the department. Each PPRN document in the N_DOCUMENT_PPRN geographical table is linked with its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and the order number of the associated PPR procedure in GASPAR): 1. its administrative procedure for drawing up (or revising) managed in the GASPAR application, on the one hand, 2. its set of numeric spatial data as described in the metadata sheet N_PPRN_AAAANNNN (#0001495).风险预防计划（Risk Prevention Plans，PPR）由1995年2月2日《加强环境保护法》确立，是国家在风险预防领域的核心工具。其目标是对存在重大风险区域的开发活动进行监测。 PPR由省长批准，通常由领地部门主管局（Direction Départementale des Territoires，DDT）执行。此类计划通过对现有或未来建筑设定建筑禁令或要求（包括建设性条款、降低脆弱性工程、农业使用或实践限制等），规范土地用途或土地利用方式。 此类计划可处于编制中（已下达指令）、提前实施或已获批状态。 PPR文件包含介绍说明、监管分区计划与监管条例。其他有助于理解该方案的图示文件（如风险、相关问题等）可作为附件。每份PPR均由对应行政区的多边形标识：当计划处于编制状态时，该多边形对应指令覆盖的全部市镇范围；当计划处于获批状态时，则对应受限区域的外包范围。 本地理数据表可实现省内现有PPRN的空间制图。 N_DOCUMENT_PPRN地理数据表中的每份PPRN文件，均与其格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的GASPAR代码相关联（其中AAAA与NNNN分别对应GASPAR系统中相关PPR流程的参考年份与序号）： 1. 其在GASPAR应用中管理的编制（或修订）行政流程； 2. 元数据表N_PPRN_AAAANNNN（#0001495）中所描述的整套数值空间数据。