煤矿安全2019，Vol.50Issue(3)：9-12,16,5.DOI:10.13347/j.cnki.mkaq.2019.03.003
静态破碎剂膨胀力学性能试验研究
Experimental Research on Mechanical Properties of Static Breaking Agents
摘要
Abstract
The expansion mechanical properties of static crushing agent were studied in detail, the effects of water-cement ratio, mixing temperature and pore size on the expansion pressure were analyzed in detail, through the data analysis, the expansion pressure curves under the corresponding conditions were obtained. By comparing the size of the radial expansion pressure at different water/cement ratios, at the same time, taking into account the flowability of the breaker, the optimum water-cement ratio of the static breaker should be controlled between 0.2 and 0.3; static cracking agent gradually increases in expansion pressure with the increasing of pore size, and the difference between the axial and radial expansion pressure gradually decreases as the Poisson’s ratio increases after hydration consolidation of the breaker; increasing the temperature of the mixing water temperature can accelerate the hydration reaction of the breaker. Summarizing and analyzing the test results of the expansion pressure under various conditions, the hydration reaction can be divided into four stages: hydration reaction preheating, rapid reaction expansion, heat dissipation and pressure reduction, and pressure stabilization.关键词
静态破碎剂/膨胀压/水灰比/泊松比/水化反应/煤矿爆破Key words
static breaker/expansion pressure/water-cement ratio/Poisson’s ratio/hydration reaction/coal mine blasting分类
矿业与冶金引用本文复制引用
谢益盛,杨光辉,黄小朋..静态破碎剂膨胀力学性能试验研究[J].煤矿安全,2019,50(3):9-12,16,5.基金项目
国家自然科学基金资助项目(51274090) （51274090）
河南省高校科技创新团队支持计划资助项目(17IRTSTHN030) （17IRTSTHN030）
