刚果(金)SICOMINES矿区工程勘察全波列测井成果分析研究

Analysis on full waveform results of engineering geological prospecting in SICOMINES Mine of Congo( Kinshasa)

在矿区工程地质勘探中,获取深部基岩的物理力学参数的方法往往比较单一,一般通过野外钻探采样返回实验室进行岩石试验来获得。全波列测井是一种较好的原位测井方法,通过声波探头在井内的激发、接收来获取深部基岩波速值,根据公式计算岩体的物理力学参数。本文通过介绍全波列测井设备、操作过程及软件处理方法以及对SICOMINES矿区GK02号钻孔的全波列测井曲线分析,总结了全波列测井资料处理方法和试验结果在矿区工程地质勘探中的重要性,并通过与室内试验和钻探岩芯的比较,更好地查清了矿区边坡中的软弱层,为矿区进行工程地质岩组划分与边坡计算提供了重要依据。

There are only a few methods to get the physical parameters of deep-seated bedrock. Usually these parameters are obtained through laboratory testing on rock specimens. Full waveform logging of rock mass is good in-situ logging method. The wave speed can be determined by sending and receiving the waveform with sonic probe in borehole,and then the parameters can be calculated with formula. The equipment and its operation and the proceeding software are introduced. The full waveform data of borehole GK02 in SICOMINES Mine is analysed. The importance of full waveform logging is presented. The weak layer in the slope is located in contrast to laboratory test and rock core. The results provide an important basis for lithology zoning and slope stability analysis.