THE APPLICATION OF THE HIGH-PRECISION GRAVITY METHOD TO THE SHIXIAWEI LANDSLIDE-TACKLING AREA, HONG KONG
XU De-shu1,2, LU Jing-qi2, LI Yuan-hou2, LI Xiao-chang2, YU De-wu2
1. China University of Geosciences, Beijing 100083, China;
2. Exploration Geophysics Open Laboratory of Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, China
This paper describes the techniques of applying 5 m network high-precision gravity survey to engineering exploration, which include geodetic survey, gravity survey and three-dimensional inversion. Through the elimination of gravity influence on the engineering design parameters of the hilltop buildings, the human interference correction was realized. The forward calculation was made by using the precise forward formula for theoretical gravity anomaly of vertical prism, and the inversion was also conducted with the generalized inverse method. As a result, the structural characteristics of the top relief of the fresh granite batholith in the Shixiawei landslide-tackling area in Kowloon of Hong Kong were revealed. A comparison with the drilling result shows the reliability of the depth contour map for the top surface of the granite batholith.
许德树,卢景奇,李元厚,李晓昌,于德武. 高精度重力测量在香港石硖尾滑坡治理区的应用[J]. 物探与化探, 2004, 28(4): 345-348.
XU De-shu, LU Jing-qi, LI Yuan-hou, LI Xiao-chang, YU De-wu . THE APPLICATION OF THE HIGH-PRECISION GRAVITY METHOD TO THE SHIXIAWEI LANDSLIDE-TACKLING AREA, HONG KONG. Geophysical and Geochemical Exploration, 2004, 28(4): 345-348.