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巖石爆破基礎理論研究進展與展望Ⅰ—本構關系

Advancements and future prospects in the fundamental theories of rock blasting research Ⅰ—Constitutive relationships

  • 摘要: 巖石爆破技術在國民經濟建設中發揮著重要作用,尤其在資源開采、基礎設施建設等領域. 本文對巖石爆破本構關系進行了深入研究和探討,在傳統本構關系研究的基礎上,提出了本構關系1.0、2.0和3.0的演化階段,分別探討了矛盾關系、能量平衡以及最小作用量理論. 本構關系1.0從巖石與爆炸、沖擊荷載的相互作用出發,強調了矛與盾的關系,重點分析了巖石材料的動態力學響應;本構關系2.0以能量為切入點,將含有節理裂隙、層理和腔體等缺陷以及顯著各向異性的巖石視為復雜結構材料,研究荷載輸入能量與材料破壞所需能量之間的動態平衡關系,解析結構強度與輸入能、耗散能及可釋放應變能之間的關聯;本構關系3.0關注爆炸荷載下應力波的傳播規律及其與介質破壞效應的關系,特別是通過最小作用量理論來優化能量的傳播路徑,提高炸藥能量的利用效率. 這些理論不僅揭示了巖石在不同荷載條件下的力學行為,還為優化爆破設計和改善爆破效果提供了理論依據. 同時,本文結合人工智能和大數據技術,提出了巖石材料工程基因的概念,通過建立巖石基因庫,系統化管理巖石的物理力學參數,構建性能預測模型,提升了對巖石特性的理解和工程應用的精確度. 未來,巖石材料基因庫有望在礦產資源開發、地質災害防治和基礎設施建設等領域發揮更大的作用,推動工程技術的發展和應用.

     

    Abstract: Rock blasting technology is crucial for national economic development, particularly resource extraction and infrastructure construction. This paper explores the constitutive relationships in rock blasting, proposing three evolutionary stages: constitutive relationships 1.0, 2.0, and 3.0. These stages focus on contradictory relationships, energy balance, and minimum action theory, respectively. Constitutive relationship 1.0 centers on the interaction between rock and explosive impact loads, emphasizing the offense–defense dynamic. It analyzes the dynamic mechanical response of rock materials under explosive and impact loads, highlighting the conflict and balance between the explosive force and the rock resistance. This stage provides fundamental insights into the behavior of rock materials under high-stress conditions. Constitutive relationship 2.0 approaches the problem from an energy perspective. It treats rocks with significant anisotropy, joints, fractures, bedding, and cavities as complex structural materials. This stage studies the dynamic equilibrium between load input energy and the energy required to destroy the material. By understanding the relationship between structural strength, input energy, dissipated energy, and releasable strain energy, researchers can better predict the response of complex rock structures to explosive loads and improve blasting efficiency. Constitutive relationship 3.0 examines the propagation laws of stress waves under explosive loads and their relationship with medium damage effects. This stage focuses on optimizing energy propagation paths based on the minimum action theory, aiming to maximize the effectiveness of the explosive force while minimizing unwanted damage to the surrounding rock mass. These theories not only reveal the mechanical behavior of rocks under different load conditions but also provide a theoretical basis for optimizing blasting design and improving blasting outcomes. In addition to these theoretical advancements, the integration of artificial intelligence and big data technologies offers a new approach to managing and predicting rock material performance. This paper proposes the concept of rock material engineering genes, which involves establishing a rock gene library to systematically manage the physical and mechanical parameters of rocks. By constructing performance prediction models using advanced data analytics and machine learning algorithms, this approach enhances the accuracy of predicting how different rock types will respond to various engineering applications. Such a comprehensive database has significant implications for resource extraction, geological disaster prevention, and infrastructure construction. The rock material gene library is expected to play an increasingly important role in mineral resource development, geological disaster prevention, and infrastructure construction, thereby promoting the development and application of engineering technology. Its integration with traditional blasting techniques can lead to more efficient and safer methods of rock blasting, ultimately contributing to the advancement of engineering practices and economic development of regions dependent on these technologies. This holistic approach underscores the importance of continued research and technological innovation in rock blasting and material science.

     

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