On the basis of analyses of wellbore unstability mechanism,the changing law of shale mechanics parameters was established after shale hydration by the experimentation. 在井眼失穩機理分析的基礎上，經(jīng)室內實(shí)驗得出泥頁(yè)巖水化后巖石力學(xué)參數的變化規律。
The mechanical parameters of rock and soil are of the property of spatial variation due to inhomogeneity, so they should be properly considered as a random field. 巖土類(lèi)力學(xué)介質(zhì)通常為非均質(zhì)體，其力學(xué)參數具有空間變異性，宜將它們視為隨機場(chǎng)加以研究。
