The Meita oil field is the main oil field which belongs to the Yan Chang petroleum company and the chang-6 layer is the new exploration layer in recent years.

The preliminary investigation on population of Rotifera in subsided area of Huaibei coal mine;

This paper evaluated the effect of water pollution on subsided area of Huaibei coalmine using micronucleus test technique,BOD and COD.

The terrain in the subsided area generated by mining is complicated, in this paper, we apply fractal interpolation to simulate the fractal terrain in the subsided area.

Comprehensive treatment of the surface water system in subsidence area of coal mine;

The log testing method used for ground control in subsidence area;

Design discussion of overpass in subsidence area based on ADINA;

The source,hazard and repairing technology of heavy metals in coal collapse area waters were summarized,the plant repairing technology was introduced in detail and the trend and direction of development of heavy metals waste waters repairing technology in coal collapse area were summarized,and all of this was took South Lake park for example in Tangshan.

Rehabilitation or restoration of collapse area in experimental coal mining cities has shown its economic social and environmental significances.

Leaching test, soil modified experiment, adsorption and desorption experiment were carried out for coal gangue reclamation in collapse area of coal-mines.

Analyzing the acoustic emission signal from rock damage in subsiding area;

By use of the hybrid analysis of the statistical theory and scan electron microscopy (SEM),the characters of acoustic emission (AE) signals coming from rock damage in subsiding area are synthetically analyzed and evaluated.

It deals with the basic features of Juye Coal Field geology and detects the subsiding area after mining, meanwhile, methods of controlling and utilizing the subsiding area are put forward.

Study on terracing dynamic reclamation of mining collapsed area;