The aggravated deformation of dangerous rocks in Wushan is a serious threat to the local residents and the safety of Yangtze River shipping. Rock drilling is the important means to make clear the dangerous rocks fracture development state and direction, and obtain rock and soil mechanics parameters. Through site survey, the difficulties are predicted for the countermeasures making. The diamond single-action and double-tube coring drilling method was adopted, the samples was taken in soft zone of dangerous rock base; borehole imaging technology was used to reflect the development state of rock fracture. The experience is accumulated for emergycy rescue in construction organization management, equipment selection, drilling technology, borehole imaging technology and safety measures.