In this study, four types of grout were developed to evaluate the effect of grouting of saturated riprap layers on ground water flow. The developed types of grout are divided into a quick-setting type and a general-type, and also into high and low viscosities. A number of grout tests were performed in a model acrylic chamber, 0.4 m in diameter and 2.0 m in length, for visual observation of inje...

For pump installation most experts recommend installing conventional metallic baseplates on concrete foundations and securing them to the foundation with a combination of anchor bolts and epoxy grout. Many papers have been written on the techniques required to obtain a good quality installation free of voids and properly bonded to the concrete and baseplate itself so as to give a long trouble-f...

INTRODUCTION Beijing subway line 14 includes four stations and approximately 2.8 km of tunnels between the Dongfengbeiqiao and Jingshunlu areas of the city. Due to the surface and underground space limitations of this section, a double-track running tunnel instead of two single-track running tunnels was adopted to connect the two stations. The double-track tunnels were excavated by a 10.22 m di...

In this study, the deformation characteristics and mechanical properties of coal rock mass in S2N5 working face Xiaokang mine are analyzed to address problem large soft rocks with high situ stress surrounding roadways. Through a newly developed grouting pipe, double-shell technology, consisting low-pressure high-pressure split grouting, is proposed for mine. addition, effect evaluated by boreho...

Shield tunnel structures are commonly found to be overdeformed in Eastern China soft ground due adjacent engineering activities. Grouting treatment could serve as a viable solution actively reduce the excessive diametrical expansion of linings. However, understanding grouting-induced effects on remains preliminary scarcity well-documented case histories. In this study, field experiment was cond...