Year: 2025
Type: article
Abstract: To address the challenges of inconvenient material sourcing and low stemming efficiency in horizontal tunnel blasting, this study proposes a novel rapid-setting gun mud. The material's composition, formation mechanism, and initial setting characteristics are first analyzed, and a multi-parameter coupled model for optimal stemming length is established. Subsequently, a series of blasting model tests with varying stemming lengths is conducted, followed by a quantitative analysis of the block-size distribution of limestone under different stemming conditions. The influence of stemming length on rock fragmentation characteristics is revealed, and theoretical predictions are validated against experimental results. Findings indicate that the curing process of the proposed material is primarily driven by hydration reactions, with simple operation, environmental friendliness, and safety for workers. Moreover, the developed multi-parameter coupled model for optimal stemming length shows good agreement with experimental results, providing a quantifiable theoretical basis for the refined parameter design in mechanized tunnel blasting.
Source: Scientific Reports
Language: English
Topic: Blasting Impact and Analysis
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
Award: G7839063349
OpenAlex ID: W4414933495