For more of this book, click here. The method of deep vibro-compaction of water-saturated sandy foundations was proposed and developed by VNIIGS by P. D. Lobasov. The essence of this method is that dynamic excitation is transmitted to the water-saturated sandy mass by a spatial rod structure rigidly connected to a vibro-exciter operating at a … Continue reading Vibration Technology Of Deep Compaction Of Sandy Foundations
For more of this book, click here. Trenchless installation of engineering utilities is used under highways and railways, streets, existing utility networks, etc. In recent years, due to a sharp increase in the volume of reconstruction work at existing enterprises, and the development of water supply, sewerage, electricity, and gas supply networks in built-up areas, … Continue reading Application Of Vibration Technology In Trenchless Pipe Installation
For more of this book, click here. In non-cohesive soils, cut-off walls such as trench walls with a width of about 0.6 m, as well as thin cut-off walls with a width of 100--200 mm constructed using vibration equipment, have become widespread as anti-seepage barriers. Thin cut-off walls have advantages compared to trench walls: the … Continue reading Construction Of Thin Anti-Seepage Cut-Off Walls
For more of this book, click here. Currently, various methods are used for constructing trench walls using mainly drilling and grab equipment. One of the promising directions for increasing productivity, reducing costs and increasing the value of this work is the construction of trench walls using vibration technology. The vibration method can be successfully applied … Continue reading Application Of Vibration Technology In The Construction Of Deep Structures
For more of this book, click here. The issue of decommissioning water wells and ground-freezing wells arises in cases where these wells have fulfilled their task (drainage or ground freezing) or their operation (water supply wells) has ceased to be expedient due to a decrease in productivity that can no longer be restored. Solving the … Continue reading Casing Pipe Extraction During Well Decommissioning
For more of this book, click here. The main method for constructing wells in water depths exceeding 100–150 meters is rotary drilling with clay mud flushing of the borehole. During the development of wells drilled using the rotary method, it is necessary to remove the clay particles of the flushing fluid from the near-filter zone … Continue reading Restoring The Productivity Of Water Wells During Their Development And Repair
For more of this book, click here. If water-bearing formations consist of sands, it is advisable to install wire-wound filters with a gravel pack in the wells. This pack improves the filtration characteristics of the zone around the filter. It also increases well productivity and stabilizes its operation as a water source. One of the … Continue reading Installation Of Filter Columns When Constructing Gravel-Packed Wire-Wound Filters In Water Wells
For more of this book, click here. In the process of percussion-cable drilling, bore hole walls are reinforced with casing pipes to prevent collapse and to isolate water-bearing horizons. The low driving capacity of a drilling tool and the lack of reliable means for extracting intermediate columns when filters are exposed lead to a situation … Continue reading Immersion And Extraction Of Casing Pipes In The Process Of Percussion-Cable Drilling Of Boreholes
For more of this book, click here. During impact-cable drilling, the destruction of hard and cohesive soils by existing drilling tools occurs through periodic impacts of the rock-breaking tool on the bottom of the well. Due to the low efficiency of such action, it requires significant time and cost. It is established that the rock-breaking … Continue reading Driving Through Hard And Cohesive Soils During Impact-Cable Well Drilling In Water
For more of this book, click here. Geotechnical boreholes must satisfy two goals: provide reliable information about the geological structure of the site and give sufficient data on the physical and mechanical properties of the soils. To solve these tasks, the technique and technology of drilling geotechnical boreholes must allow obtaining soil cores along the … Continue reading Drilling Of Geotechnical And Other Exploratory Boreholes
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