地下水在非饱和土体中的输运过程及渗流特性具有重要的研究意义。新模型能够较好地描述地下水在非饱和土体中的输运过程,Conformable导数具有较好的适用性。
完整岩石单轴抗压强度是传统和普适Hoek-Brown（HB）强度准则中的关键参数，其与岩石软硬程度和岩石破碎程度具有强关联性，而理想的或理论值严格意义上并不等同于单轴测试值。
The sample satisfies the engineering needs well. Moreover, for CT images, there is a higher fault tolerance rate, and only a few CT images with better scanning quality effects are needed for each calculation.
Investigating the stress drop of abutment pressure is the key to a deep quantitative analysis of the discontinuous stress redistribution under mining.
The result shows that the fractal reconstruction describes the anisotropy effectively and the four descriptors show high precision for fractal dimension calculation.
。基于理论计算和数值模拟得出的底板承压水渗流路径扩展规律,在实际工程中可结合微震监测技术来实时动态捕捉煤层底板隐伏导含水构造活化的前兆信息,进而实现底板突水路径的预测预报和快速重点区域治理。
The project implementation effect verifies the research and conclusion, the proper application of them has ensured the success of engineering blasting.
The experimental result shows the helium-water flow is properly demonstrated by the low-field NMRI method, but the drainage efficiency of helium displacing water is not high due to the trapped water in AP.
煤矿开采逐渐走向深部,深部煤岩体表现为复杂的孔隙结构及低渗透特性,因此正确认识气体与水在煤岩等低渗岩土介质中的渗透规律、表征煤岩孔裂隙结构网络对于深部开采具有重要意义。
裂隙几何的精准、高效识别是建立岩石混凝土材料非连续力学模型的基础。传统算法,如阈值分割、边缘检测与区域生长法等,基于有限经验,工作量大且识别精度低。人工智能识别迥异于人类经验,可自我循环、可自我正反馈甚至可实现自我学习。