重型绞吸式挖泥船挖掘中风化岩影响因素分析

Analysis of influential factors for heavy-duty cutter suction dredger working in moderately weathered rock

针对目前国内外疏浚岩石理论及岩石疏挖工艺研究较少的现状,以重型绞吸式挖泥船在中风化岩石条件下的挖掘施工数据为基础,提出了疏浚岩体基本质量指标修正值[BQ]TH,并对中风化岩石性质与施工参数的相互影响因素进行分析。结果表明,绞刀切片厚度、绞刀转速、绞刀功率等施工参数与岩体基本质量指标修正值[BQ]TH的相关性较好,并拟合得出相应的经验公式,对挖岩工艺的改进具有指导意义。

According to the present situation which is lack of the rock dredging theory and the construction technology,this paper presents the new revised rock mass basic quality indicator for the dredging engineering（ [BQ]TH） and also analyzes the influential factors for the heavy-duty cutter suction dredger working in the moderately weathered rock,on the basis of the data recorded in the dredging construction in the medium weathered rock. The results show that the reamer slice thickness,the reamer shaft speed,and reamer power with revised rock mass basic quality indicator（ [BQ]TH） have good correlations. Relevant empirical formulas are summarized to guide future process of the construction technology.