by bigrivergeostg | May 30, 2024
Shafts are vertical or inclined excavations used to provide access to underground facilities or to serve as ventilation or escape routes in tunnels. Shaft construction involves various techniques such as conventional excavation, slurry wall construction, or shaft...
by bigrivergeostg | May 30, 2024
Ensuring the integrity and durability of installed pipes is crucial for the long-term performance of underground infrastructure. Pressure testing involves subjecting the pipe to hydraulic or pneumatic pressure to verify that it can withstand operational conditions...
by bigrivergeostg | May 30, 2024
HDD is a versatile trenchless technique used for installing underground utilities along predetermined paths with minimal surface disruption. It involves drilling a pilot hole from the entry point to the exit point, then enlarging the hole to accommodate the utility...
by bigrivergeostg | May 30, 2024
This trenchless method is commonly used for installing underground utilities such as pipelines or conduits beneath obstacles like roads, railways, or buildings. It involves excavating a launch pit and a receiving pit, then pushing or jacking the pipe through the...
by bigrivergeostg | May 30, 2024
During tunneling or boring operations, annular pressure grouting is employed to enhance the stability of surrounding soil or rock formations and to prevent water infiltration into the tunnel. This process involves injecting grout into the annular space between the...
