A study based on distributed data acquisition system of smart geophones in three-dimensional seismic prospecting

摘要

Based on an analysis of 2D seismic prospecting in an adjacent coal mine, this paper puts forward a method of 3D seismic prospecting based on distributed acquisition system, in allusion to problems such as complexity of coalfield geological condition and hydrogeological condition in Enhong Coal Mine Area of Yunnan Province. The collected real-time data are of high-precision and high-reliability after being compared with those topographic and geologic maps, geologic section maps and columnar sections of coal measure strata. Thereupon, this method is proved to be able to accurately ascertain coal seam strike in the coal area, which goes northeast between 15° and 30°, all dip angles are less than 15°, occurrence condition of distances are stable, and 22 faults in the test sections are newly found. The imaging data from tests can serve as a geological basis for reasonable layout of mining face in first mining area and mine roadways, and what's more, guarantee high efficiency and safety underground mining.