Plan for the prevention of natural risks of terrain movement — Municipality of Montjoi — 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，缩写PPR）由1995年2月2日发布的《加强环境保护法案》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。 此类计划由省长批准，通常由省领土事务局（departmental directorates of the territories，缩写DDT）负责执行。此类计划通过对现有或未来建筑实施建筑禁令或提出相关要求（包括建设规定、降低脆弱性工程、农业使用或作业限制等），对土地利用方式进行规范。 此类计划可处于制定中（即规定状态）、提前实施或已获批状态。 PPR文件包含说明性文档、监管分区规划及管理条例。可附加其他有助于理解该计划的图文资料（如风险隐患、相关问题等）。每个PPR由一个多边形标识：当计划处于规定状态时，该多边形对应规定适用范围内的全部市镇；当计划处于获批状态时，则对应受限区域的边界范围。 此地理表格可用于在省域范围内绘制现有PPRN的空间分布图。 N_DOCUMENT_PPRN地理表格中的每份PPRN文档，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系统中关联PPR流程的参考年份与序号）： 1. 一方面是在GASPAR系统中管理的PPR制定（或修订）行政流程； 2. 另一方面是元数据表格N_PPRN_AAAANNNN（编号#0001495）中描述的数值空间数据集。