Abstract: Drilling mud (or drilling fluid) is a vital component in a horizontal directional drilling (HDD) crossing project, for which a key function is the removal of the cuttings from the borehole. The rheological properties of ...

Abstract: For underground structures at coastal areas, inflow/infiltration (I/I) control is a critical procedure to guarantee their quality, especially for manholes, which are more likely to have structural problems and I/I problems. ...

Abstract: Stainless steel liners are being used with increasing frequency for the trenchless rehabilitation of damaged water supply pipelines in China. At present, there is little research on the buckling resistance of stainless ...

Abstract: Two river crossing cases are considered in which a pipe is installed beneath the Yangtze River using horizontal directional drilling (HDD). In both cases, a length of pipeline located on the rock strata near the north bank, ...

Abstract: Horizontal directional drilling (HDD) has become increasingly used for the construction of large diameter (more than 600 mm or 24 in.) pipeline projects throughout China. Due to the large investment of capital and resources, ...

Abstract: Stainless steel liners are being used with increasing frequency for the trenchless rehabilitation of damaged water supply pipelines in China. At present, there is little research on the buckling resistance of stainless ...

Abstract: Fresh mud (uncontaminated by soil or rock cuttings) plays important roles during borehole drilling, and its rheology has been studied for years in the oil and gas drilling industry. However, mud properties in those areas ...