Abstract: Coal and outburst accident alarm system requires convenient operation, real-time refresh, with cross platform capabilities, able to adapt to the complex deployment environment. For the solution of the original C/S architecture outburst accident alarm system deployment is not convenient, maintenance workload and other issues, the space based on OpenLayers open-source Web GIS library, supplemented by OSGeo web, GeoJSON.NET and other data conversion library, and JavaScript, Ajax and other web client technologies, relying on the ASP. Net environment design research and development of the outburst accident alarm site, and in the popularization and application of the Hong-Yang Coal Mine of Shenyang Coal Group, with expansion of good, easy to deploy, maintenance workload is small, browser compatibility, map the user experience is good wait for a characteristic, explore an open source WebGIS library design and development of coal mine special small web mine map management system feasible technology scheme based on.