Through analysing the geologic condition and deposit formation,scientific and reasonable selection first mining section in the process of second phase enlarging constructing design and achieving mining fill equilibrium in the process of mine production are put forward on the basis of the mining condition of Zhangmatun Iron Mine.

The mining condition in underground mine is an important factor to design and produce.

Based on the variable fuzzy collection theory,a new safety evaluation model of the mining conditions in the mine,a fuzzy identification model,was established.

Qualiative and quantitative evaluation on tourist resources and development condition in Wansheng district, Chongqing;

Based on features of geological structure, hydrogeology, stratigraphy and lithology, coal rank and quality, coal seam (seam group) thickness and parting distribution, the paper allsidedly analyzed the coal seam underground gasification development condition and prospect.

It analyses the development conditions of Xiamen s tourism resources,and concludes that establishing the information system will improve the Xiamen s image,and it can bring about a further advance in Xiamen s tourism to expand the exploitation of social tourism resources and strengthen the regional cooperation.

In order to study fracture property of RCC and cracking condition of induced joint,three point banding beam fracture tests of RCC have been carried out in this paper.

A study on the optimal ratio of state-owned stock in SOEs reform under open conditions;

In the future,the security problem of Chinese petroleum must be solved under open conditions with the aid of international petroleum market.