Research of the prediction method and environment conservation due to coal mining subsidence in North China

华北地区采煤塌陷预测方法及环境保护研究

基本信息

批准号：
15404027
负责人：
ESAKI Tetsuro
金额：
$ 4.8万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

In order to solve subsidence problem due to mining, we cooperate with the leading research institutes in China to carry out this project. During the cooperation, we invite the Chinese researchers to Japan, and send our researchers to China to investigate the current status of subsidence. The investigation and studied results are summarized.Because most of the coal mining in China is underground mining, it is believed that the subsidence is unavailable. The influenced area is about 133〜200 million m^2 increasing every year. Generally, the corresponding influences to the surface structure are discussed as follows : subsidence, slope, curvature, horizontal movement and longitudinal strain. In fact, each influencing factor works alternatively. In many areas, there are a lot of rivers with a low gradient riverbed in China. Subsidence may influence the whole watershed area and some problems such as drainage may take place. Kyushu University has developed a new analysis system to predict the subsidence procedure by using Geographic Information System (GIS). The method has been applied to two representative districts in North China. The subsidence because of excavation process is precisely predicted, and its influences to surface structure such as the railway and bridge are assessed. Some ideas have proposed and the excavation planning is modified to reduce the subsidence impact.In the excavation planning of coal mining, the corresponding influences and impact should be evaluated correctly and the corresponding counter measures have to be prepared. Concerning the theme of creating a good new environment nowadays, the research results could be used to establish a geo-environment conservation system, and the development of resources could be in harmony with the environment.

为了解决采矿引起的沉降问题，我们与中国领先的研究机构合作开展该项目，在合作期间，我们邀请中国研究人员前往日本，并派遣我们的研究人员前往中国调查沉降现状。总结了调查研究结果。由于我国煤炭开采大多为地下开采，因此认为沉降影响面积约为133-2亿m^2，每年都在增加。到表面沉降、坡度、曲率、水平移动和纵向应变实际上是交替作用的，在我国很多地区，存在着很多低坡度河床的沉降可能对整体产生影响。九州大学开发了一种新的分析系统，利用地理信息系统（GIS）来预测沉降过程，该方法已应用于华北地区的两个代表性地区。精确预测开挖过程，评估其对铁路、桥梁等地表结构的影响，提出一些思路并修改开挖方案，以减少沉陷影响。正确评估影响，制定相应对策，围绕当前创建良好新环境的主题，利用研究成果建立地质环境保护体系，协调资源开发。与环境。