A coupled approach to simulate initiation of outbursts of coal and gas - Model development
A coupled approach to simulate initiation of outbursts of coal and gas - Model development
复制标题
DOI：
10.1016/j.coal.2011.02.006
复制
发表时间：
2011-05-01
影响因子：
5.6
通讯作者：
Wang, Gang
中科院分区：
文献类型：
--
作者：
Xue, Sheng;Wang, Yucang;Wang, Gang
煤与瓦斯突出是地下煤矿开采的主要危害。当满足一定的煤应力、强度和瓦斯条件时，就会发生这种情况。爆发被认为是一个两步过程，即启动和发展。每个步骤都有其自身的特点，并且需要不同的数值建模方法。第一步，使用耦合模拟器对爆发的引发过程进行数值模拟。该模拟器模拟煤层的变形和破坏、瓦斯的吸附和解吸以及煤中瓦斯和水的流动。该模拟器是通过链接并顺序执行两个数字代码：FLAC3D 和 COMET3 来开发的。 FLAC3D 是一种广泛使用的商业代码，专为工程力学计算而设计，而 COMET3 是一种成熟的代码，用于模拟解吸控制储层的天然气和水生产。在本文中，这两个代码通过耦合模块链接并顺序执行，耦合模块包括用户设计的C++模块和FLAC3D中内置FISH语言开发的多个模块。这些耦合模块用于在代码之间传输相关数据。本文还提供了一个模拟爆发启动的简单示例，以展示耦合模拟器的功能。 (C) 2011 Elsevier B.V. 保留所有权利。
An outburst of coal and gas is a major hazard in underground coal mining. It occurs when certain conditions of coal stress, strength and gassiness are met. The outburst is recognized as a two-step process, i.e. initiation and development. Each step has its own characteristics and requires different approaches in numerical modeling. As a first step, the initiation process of the outburst is numerically simulated with a coupled simulator. The simulator models the deformation and failure of a coal seam, adsorption and desorption of gas and flow of gas and water in coal. The simulator is developed by linking and sequentially executing two numerical codes: FLAC3D and COMET3. FLAC3D is a widely used commercial code designed for engineering mechanics computation, while COMET3 is a well-established code to model gas and water production from desorption-controlled reservoirs. In this paper, these two codes are linked and sequentially executed through coupling modules including a user-designed C++ module and several modules developed with the build-in FISH language in FLAC3D. These coupling modules are used to transfer relevant data between the codes. A simple example to simulate the initiation of the outburst is also presented in this paper to demonstrate the capability of the coupled simulator. (C) 2011 Elsevier B.V. All rights reserved.