## 1 Introduction  
With rapid economic development, there has been an increasing demand for environmental protection and sustainable development, posing new challenges to traditional rock-breaking technologies. Many unconventional rock-breaking methods, such as drill and blast [1], high-pressure water jet [2], ultrasonic rock breaking [3], and thermomechanical rock fragmentation [4], often generate high levels of noise, dust, and toxic gas emissions during operation. These not only adversely affect the surrounding environment but also fail to meet the requirements of green and sustainable development concepts, thereby constraining the progress of environmentally friendly engineering practices [5]. Against this backdrop, metal wire electro-explosion rock fragmentation technology has rapidly developed in recent years and shows promising application prospects [6]. By precisely adjusting discharge parameters, this technology enables controllable and efficient rock fragmentation in deep, hard strata. Compared to traditional explosive or high-noiseconstruction methods, it offers significant advantages in terms of low energy consumption, excellent fragmentation performance, low noise, and zero dust pollution, thereby greatly reducing environmental impact. The principle of the technology involves the use of high-pressure pulsed current to induce rapid phase transitions (solid-liquid-gas-plasma) in the metallic wire within a very short time. The sudden volumetric expansion generates intense shock waves in the dielectric, which then propagate through and affect the surrounding rock [7; 8]. However, currently, only approximately 18-24% of the total discharge energy is converted into shock wave energy, indicating substantial room for improvement in fragmentation efficiency [9; 10; 11]. To enhance the efficiency of electrical explosion rock breaking, researchers have explored factors such as metal wire parameters and discharge conditions. However, under conditions of continuously increasing input energy, the intensity of shock waves tends to saturate or even decrease. This has prompted scholars to shift their focus towards dielectric media, aiming to enhance shock wave intensity and rock-breaking efficiency by altering the dielectric properties. Existing research indicates that different dielectric media can significantly influence shock wave parameters. For instance, [PERSON] et al. discovered that when conducting copper wire electrical explosions in polyester, the shock wave velocity and generated pressure were 2-4 times higher than in water [12]. [PERSON] et al. utilized a slurry-like energetic material containing nitromethane, aluminum powder and copper oxide powder, initiating it through electrical explosion and achieving a 1.7-fold increase in shock wave amplitude [13]. [PERSON] et al. performed aluminum wire electrical explosions in 80% concentrated hydrogen peroxide solution, notably enhancing the intensity of secondary shock waves [8; 14]. [PERSON] et al. proposed a method of electrically exploding energetic mixtures to augment underwater shock waves [15]. [PERSON] et al. compared tap water with sodium chloride solution, finding that the latter increased the pressure peak by 0.35 MPa [16]. [PERSON] investigated tap water, salt water, and oil-water mixtures, revealing that the oil-water mixture produced the highest shock wave intensity [17]. [PERSON] et al. added aluminum powder to a suspension for an electrical explosion, increasing the secondary shock wave intensity to 2.25 times that of the environment without aluminum powder [18]. [PERSON] et al. verified the feasibility of enhancing electrical explosion shock wave intensity through cavitation effects by substituting tap water with cationic and anionic foams [19]. [PERSON] et al., conducting metal wire electrical explosions in liquid nitrogen, found that higher peak voltages and longer pulse durations were conducive to promoting breakdown and expansion [20].