摘要
为探究现场混装乳化基质的抗剪切性能,以SICODEX生产的乳化基质为研究对象,进行了流变特性测试、模拟高速泵送剪切测试和螺杆泵泵送测试,并研究了乳化基质的抗剪切稳定性。流变学测试结果显示,乳化基质符合Herschel-Bulkley流体模型,在剪切速率低于0.1 s^(-1)和高于1 s^(-1)时具有不同的流变学特性,乳化基质的黏度-剪切速率关系与Carreau-Yasuda和Cross模型拟合度最高;泵送测试显示,注射器模拟高速泵送后,基质储能模量提高138%,黏度提高135%,平均粒径减小23%,而螺杆泵泵送后参数无显著变化。结果表明,乳化基质流变特性随剪切速率分段变化,注射器高速模拟泵送与螺杆泵泵送对基质稳定性影响差异显著,建议分别用于评价上向孔装药末端剪切性能与工程可泵送次数;基质稳定性需结合多场景指标综合评价。
To investigate the shear resistance of on-site mixed emulsion matrix,the emulsion matrix produced by SICODEX was taken as the research object,and rheological tests,simulated high-speed pumping shear tests,and screw pump pumping tests were conducted to study the shear-resistant stability of the emulsion matrix.The results of the rheological tests show that the emulsion matrix conforms to the Herschel-Bulkley fluid model and exhibits different rheological properties at shear rates below 0.1 s^(-1) and above 1 s^(-1).The viscosity-shear rate relationship of the emulsion matrix exhibits the highest fitting degree with the Carreau-Yasuda and Cross models.The pumping test results indicate that after simulated high-speed pumping using a syringe,the storage modulus of the matrix increased by 138%,the viscosity increased by 135%,and the average particle size decreased by 23%;however,there were no significant changes in parameters after screw pump pumping.The results suggest that the rheological properties of the emulsion matrix change in segments with the shear rate,and simulated high-speed pumping using a syringe and screw pump pumping have significantly different effects on the stability of the matrix.It is recommended to use these two methods respectively to evaluate the shear performance at the end of upward hole charging and the pumpable times.Additionally,the stability of the emulsion matrix requires comprehensive evaluation based on multi-scenario indicators.
作者
王建斐
翟小鹏
李昊
刘俊杰
迟殿鹏
WANG Jian-fei;ZHAI Xiao-peng;LI Hao;LIU Jun-jie;CHI Dian-peng(Beijing Auxin Chemical Technology Limited,Beijing 100041,China)
出处
《工程爆破》
北大核心
2025年第5期126-131,共6页
Engineering Blasting
