基于XRD技术的施工前期筑路石材岩性识别与料场勘察  

Road Material Survey and Lithology Identification at the Pre-construction Phase Based on XRD Technology

作　　者：魏道新[1] 

机构地区：[1]交通运输部科学研究院,北京100029

出　　处：《西南大学学报（自然科学版）》2013年第8期144-149,共6页Journal of Southwest University(Natural Science Edition)

基　　金：交通运输部重大科技专项"新一代公路基础设施维护关键技术;重大装备与示范(一期)"(2011318221360)

摘　　要：为准确反映和评价石料路用性能的优劣,从当前公路实践中出现的几种误区出发,分析了料场选择的关键环节.将XRD技术应用到筑路材料的岩性识别,并结合工程实例介绍了这种方法的实用性和可操作性.认为不能片面追求石料单项指标,应遵循高品质优先原则、定性与定量相结合原则;运用XRD技术有助于提高岩性识别的准确性和料场选择的工作效率;材料路用性能最终体现在各种试验指标是否满足标准要求,当石料不满足某项要求时,可采取必要的技术措施,以避免或降低不利影响.可为公路建设选择优质筑路材料,以及为类似条件下公路料场勘察提供借鉴和参考.In order to accurately reflect and evaluate the performance of road materials,key processes during material site investigation were analyzed according to some misconceptions in current construction practice.XRD technology was used in lithology identification of road materials,and the maneuverability and practical applicability of XRD were illustrated according to an engineering example.It was concluded that a single index of rock performance should not be over-emphasized and the principles of high quality priority and combination of qualitative and quantitative analysis should be followed,that XRD helped to improve the efficiency in material site investigation and the accuracy in lithology identification,that the performance of a road material should be expressed by various test indexes,and that some necessary technical measures should be taken when a certain index did not meet the requirement,so as to avoid or reduce the negative effects.

关 键 词：公路筑路材料 岩性识别 料场勘察 XRD 

分 类 号：U414.11[交通运输工程—道路与铁道工程]