Demolition of dam with swelling explosives

Category

Concrete

Industry

Demolition
Special civil engineering

Country

Switzerland

City

Schlieren

Project description

Demolishing a dam is a challenging and often complex task that requires careful planning and precise execution. The use of swelling explosives, also known as swelling concrete or blast concrete, provides an effective and safe method of carrying out such projects. Through the controlled use of non-explosive explosives, the demolition of dams can be made both efficient and environmentally friendly. Dams are demolished for a variety of reasons, whether due to age, technical deficiencies or the desire to regulate the flow of water in a particular area. In these projects, it is crucial that the work is carried out with minimal disruption and risk to the environment and surrounding communities. Swelling explosives allow precise control over the demolition process, minimizing potential hazards such as uncontrolled blasting or vibrations.

Project schedule

The process of demolishing a dam with swelling explosives follows a structured plan consisting of several phases. First, a comprehensive site analysis is carried out to determine the specific conditions of the dam. This includes an assessment of the construction materials, structural integrity and geological conditions of the site. This information is crucial for planning the blasting. After the analysis, a detailed plan for the drill holes is drawn up. The borehole diameter must be between 25 mm and 45 mm to ensure the desired expansion force of the swelling explosive. The arrangement and spacing of the boreholes is also critical; as a rule, the spacing should be ten times the borehole diameter to allow for even pressure distribution and effective cracking. Once the holes are prepared, the swelling explosive is poured into the holes according to the recommended mixing ratios - 1.2 liters of water per 5 kg of swelling explosive. This step is crucial, as the correct mixture activates the chemical reaction that leads to expansion. After filling, there is a waiting period during which the pressure in the rock is built up before blasting takes place.

Drilling information

Drilling information plays a central role in the demolition of a dam with swelling explosives. Choosing the right diameter is crucial for the effectiveness of the blasting process. A diameter between 25 mm and 45 mm enables optimum pressure distribution and expansion force. It is important to drill the holes in a structured pattern to ensure even blasting. Another important point is the spacing rule between the drill holes. The larger the drill hole diameter, the more expansion force can be achieved, while smaller spacing is expected to result in faster cracking. These factors must be carefully considered to ensure the desired efficiency and safety during demolition.

Consumption

The consumption of swelling explosives is a decisive factor that must be taken into account when planning the project. As a rule, the consumption is around 10 kg of swelling explosive per cubic meter of rock. This helps to accurately calculate the material requirements and ensure that there is enough swelling explosive for the demolition of the dam. A precise material calculation allows budgets to be better planned and resources to be used efficiently. Consumption can vary depending on the size and material of the dam, so careful analysis is essential before starting the project. This avoids unnecessary costs and delays.

Time / Costs

Demolishing a dam with swelling explosives can result in significant time and cost savings. The method is not only efficient but also safe, which means that working times can be minimized and overall costs reduced. Swelling explosives allow the demolition process to be carried out in a controlled manner without endangering surrounding structures or the environment. The cost of using swelling explosives can vary, depending on factors such as the size of the dam, the specific geological conditions and the materials required. Compared to conventional demolition methods, which are often more expensive and time-consuming, the use of swelling explosives is a cost-effective solution.

Expert opinion

To summarize, the demolition of a dam with explosives is a modern, effective and environmentally friendly method that offers many advantages. By using non-explosive explosives, the demolition process can be controlled and precise. The structured approach - from careful planning and analysis to precise drilling and effective application of the explosives - ensures that the results meet expectations and that the environment and surrounding communities are not put at risk. The advantages of this method, such as efficiency, cost savings and safety, make the use of swelling explosives the preferred choice for the demolition of dams.

Customer review

Our experience with the demolition of a dam using swelling explosives was consistently positive. The controlled use of non-explosive explosives enabled us to make the process efficient and safe. The precise planning and execution led to a smooth process without any unexpected disruptions. We particularly appreciated the safety of this technique and the minimal impact on the environment. Our clients were extremely satisfied with the results and we were able to complete the project within the planned timeframe and budget. We recommend the method of demolishing a dam with swelling explosives to anyone looking for a modern and efficient solution for complex demolition work. The combination of innovative technologies and a well thought out approach is the key to a successful project that is both cost effective and environmentally friendly.

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