单轴压力下样品破裂过程中几种化学参数变化的实验结果

为了研究地震之前的异常现象,在实验室内对岩石标本和人造样品加压时观测氡和钍射气量、水电导率以及氢气的变化。实验结果表明,样品破裂之前这些参数发生明显变化。这些变化与地震前的某些水化学异常现象是近似的。显然,还有许多因素可引起地下水中化学成分、含量的变化,为研究其变化机理问题,需要进一步的实验及现场观测。

EXPERIMENTAL RESULTS OF THE VARIATIONS OF SEVERAL KINDS OF CHEMICAL PARAMETERS IN PROCESS OF SPECIMEN RUPTURE UNDER UNIAXIAL COMPRESSION

In order to study the phenomena of anomalous behaviors before the earthquakes experiment were performed to observe the variations of radon and thorium emanations electrical conductivity of water, variation of hydrogen gas in rock specimens and artificial example under pressure in the laboratory. Results show that, these parameters have undergone obvious changes before these specimens rupture. These changes are similar to some anomalous phenomena of hydro-chemistry before earthquakes. Apparently, there are many factors which would give rise to variations of the chemical composition and content of the matter contained in groundwater. To understand the mechanism of these variations, more experiments in the laboratory and in the field are needed.