Factors affected the data quality include the Quaternary washings covering the earth surface, unconsolidated rocks, shallow depth of targets, enriched minor faults, and ambient noises.

When used to surface geochemical exploration, it can predict and judge the position and properties of the transverse profile of the oil-gas zone.

Up to now a whole series of methods and(indicators) have been set up so as to detect the physical,chemicalandbiologicalchanges related to hydrocarbon microseep in surface environment.

Based on the running tunnel of Yuexiu park and Sanyuanli in Guangzhou metro line 2,the influence of in-situ stress release on the stability of surrounding rock masses and ground surface settlement for shield-driven tunnel is analysed by using the elastoplastic finite element method.

Measurement of total nitrogen of surface water by ion chromatograph;

Appraisal of surface water quality reaching standard and analysis of water quality variation in Liao river basin;

Distribution of PAHs in surface waters of Hebei Province;

Based on thin plate bending theory of elasticity theory, a model of space layer was applied to solve the problem about ground surface movements due to underground rock excavation.

Stochastic medium method is adopted for the prediction of ground surface movements and deformations due to collapse of mine caves along Leiyi Highway of Hunan Province,and the detailed analysis results of Dongwang colliery are presented.

Relations between changes of constitution stress field due to mining process and earth surface cracks;