煤层气是一种清洁能源，我国的煤层气资源存储量居世界第3位，是目前最现实的天然气接替资源。同时我国煤层气在区域分布、埋藏深度上有利于规划开发。“西气东输”、陕京一线、二线等天然气输气管线经过多个煤层气富集区，这为煤层气的开发提供了输送条件。截止到2005年底，全国共施工地面煤层气井607口，完成7个煤层气试验井组和一个示范工程项目，近年来中国煤层气对外合作已经取得了可喜成绩。但随着加大和加速煤层气勘探开发，迫切需要关注其输送管网的管理问题。由于二维管网在管理上存在一定缺陷，开发三维可视化的管网管理系统便迫在眉睫。 本文着手于研究区采气管网的探查工作，对韩城矿区采气管网进行了精密探测并将管网数据资料进行更新整理，然后结合三维可视化的用户需求，对三维可视化平台的选择与可视化场景的搭建技术进行了探讨，选择Skyline三维地理信息系统软件和3Ds Max三维建模软件，对地下管网、附属设施进行建模，并对地表三维场景进行可视化。另外对于三维管网的自动生成方法进行了试验与探讨。系统在实现过程中基于对用户的需求分析，对煤层气管网三维可视化系统的功能设计模块进行设计，并采用Geodatabase空间数据库管理方式，借助于ArcSDE空间数据引擎对二三维数据进行调用，实现二三维联动的设计，使得系统中二维电子地图和三维的场景能够相互响应。最后在.net环境下采用C#面向对象编程技术，依据系统开发的步骤及原则对煤层气管网三维可视化系统进行了开发，实现了视图区域的浏览控制、管网的统计查询以及管线分析等功能模块的开发。 本文所研究的系统将综合管线的管理为用户提供二、三维交互式体验，并实现管线设施的三维显示与管理、分析功能，对管线数据进行实时更新，构造一种合理的数据结构，使得煤层气的地下管线三维可视化系统成为管网可视化统一的管理平台，从而将隐匿于地下的煤层气管线直观地呈现在用户面前，提高管线的管理分析效率，便于领导层分析和决策。

Coalbed gas is a kind of clean energy.The storage capacity of coalbed gas resources in China ranked third in the world. Currently, Coalbed gas is the most realistic alternative resources of natural gas.At the same time,on the regional distribution and buried depth coalbed gas in China are advantageous to planning development. The natural gas pipelines ,such as The ‘West-East natural gas transmission project”,the ‘Shaanxi-Beijing first line and second line’, are all through coalbed gas rich region.That provides a favorable conditions for the development and delivery of coalbed gas.By the end of 2005,the national construction ground contains 607 coalbed gas wells. Now,7 coalbed gas test well group and a demonstration project are completed.In recent years,China has made gratifying achievements in coalbed gas cooperation.But with the increase and acceleration of coalbed gas exploration,we need to pay attention to the problems in pipeline management.Because there are some defects in the 2D network,it is imminent to develop the 3D visualization of pipeline network management system. This paper focuses on the study of gas pipeline network detection work. We detected Hancheng mining pipeline network precisely,and updated network data.According to the user requirements of 3D visualization, to select the 3D visualization platform.The construction of the visual scene technology are also discussed in this paper.This paper choose Skyline 3D geographic information system software and 3Ds Max 3D modeling software to modeling the underground pipeline network,ancillary facilities and realize the visualization of the surface of the 3D scene.In addition,the 3D network automatic generation method was tested and discussed.This system based on the demand analysis of users,in the process of implementation to design 3D visualization system function module of the coalbed gas pipeline network.By using the Geodatabase space database management and ArcSDE spatial data engine to call 2D and 3D data, to realize the 2D-3D linkage design,and to make the 2D electronic map system and the 3D scene to be able to respond to each other. Finally in the .Net environment using c# object-oriented programming technology,based on the principles of system development steps and coalbed gas pipeline network 3D visualization system for the development,browsing control of the view area,network statistics and the analysis of the pipeline such as the development of function module have been achieved. In this paper, this system integrates pipeline management,provides users with 2D and 3D interactive experiences, realizes the three-dimensional display of the pipeline facilities and management,analysis function, real-time update of pipeline data,constructs a reasonable data structure that makes 3D visualization system of coalbed gas underground pipeline network visualization to become a unified management platform.To let the hidden pipeline network presents in front of users intuitively,while to improve the efficiency of pipeline management analysis and facilitate the leadership analysis and decision making.