|
|
|
| THE PROGRESS OF GEOPHYSICAL TECHNOLOGIES FOR THE DOWNTOWN AREA OF A CITY AND THE BREAKTHROUGH IN KARST CAVE SURVEY AND ROCK BURST PREDICTION OF THE TUNNEL |
| ZHONG Shi-hang1,2, Wang Rong2 |
1. China Academy of Railway Sciences, Beijing 100081, China;
2. Beijing Hydrogeological Investigation, Engineering, Mineral Resources and Environment New-tech Development Co., Ltd, Beijing 100081, China |
|
|
|
|
Abstract Geophysical technologies in busy town of city have two problems which are vibration noise of passerby, cars and the other machines and the strong interference of geoelectric and electromagnetic. So geophysical exploration can not work in area on subway and the other engineering in busy town at present. The Landsonar method and C-1 electric instrument were new techniques used in recent years, which can not only advance greatly the resolution but also avoid kinds of interference and got new breakthrough on shallow engineering surveys in busy town of Beijng, Jinan and Guangzhou. Survey of the single karst caves was one of the difficult exploration problems. Landsonar had predicted single karst caves of 1m diameter at several decameters far away, got many confirmations with drilling hole and achieved great breakthrough. The mechanism and prediction of rockburst of underground engineering under high stress was also a difficult problem in international rock mechanics circle, the teams of author and professor Tang Chun-an achieved great result and progress on survey of rockburst with Landsonar and Microseismic monitoring system in Jingping secondary waterpower station.
|
|
Received: 10 March 2012
Published: 10 June 2012
|
|
|
|
|
|
| [1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
| [2] |
XIAO Guan-Hua, ZHANG Wei, CHEN Heng-Chun, ZHUO Wu, WANG Yan-Jun, REN Li-Ying. Application of shallow seismic reflection surveys in the exploration of urban underground space in Jinan[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 96-103. |
|
|
|
|
