掺入改性固化剂的固废油基岩屑类土路用性能研究  

Study on Pavement Performance of Solid Waste Oil-based Rock Chips Mixed with Modified Curing Agent

作　　者：范伟 文华[1] 谭树成 龚方伟 付文涛 FAN Wei;WEN Hua;TAN Shu-cheng;GONG Fang-wei;FU Wen-tao(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan Shuyu Petroleum Construction and Installation Engineering Co Ltd,Chengdu 610066,China)

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010 [2]四川蜀渝石油建筑安装工程有限责任公司,成都610066

出　　处：《武汉理工大学学报》2024年第6期1-6,共6页Journal of Wuhan University of Technology

基　　金：国家科技重大专项课题(2016ZX05040006-001-011);国家自然科学基金(51108393)。

摘　　要：为解决川渝地区钻前工程的水泥稳定碎石基层成本及资源问题,并将主要污染物油基岩屑进行资源化利用已成为钻井工程难题。从四川省某井钻前工程应用角度出发,利用油基岩屑、改性固化剂MSM、水泥和粉煤灰进行固化实验研究,通过XRF、XRD和SEM微观分析。试验结果表明:油基岩屑经固化处理后,其平均强度可以达到2.5 MPa,水稳性可以达到94%,满足规范要求,可直接用作路基填料。此外,改性固化剂能促进油基岩屑中活性SiO_(2)、BaSO_(4)、CaCO_(3)等物质解聚,并与普通硅酸盐水泥发生二次水化反应,产生C-S-H与C-A-H水化产物,增强基层结构密实性和工程性能。In order to solve the cost and resource problems of cement-stabilized gravel base in pre-drilling projects in Si-chuan and Chongqing areas,it has become a difficult problem in drilling engineering to make resource utilization of oil-based cuttings,the main pollutant.From the perspective of pre-drilling engineering application of a well in Sichuan Prov-ince,curing experiments were carried out by using oil-based cuttings,modified curing agent MSM,cement and fly ash,and microscopic analysis was conducted by XRF,XRD and SEM.The test results show that the average strength of oil-based cuttings after curing can reach 2.5 MPa and the water stability can reach 94%,which meets the requirements of the code and can be used directly as subgrade filler.In addition,the modified curing agent can promote the depolymerization of ac-tive SiO_(2),BaSO_(4),CaCO_(3) and other substances in oil-based rock debris,and secondary hydration reaction with ordinary Portland cement to produce C-S-H and C-A-H hydration products,and enhance the structural compactness and engineer-ing performance of the base.

关 键 词：油基岩屑 改性固化剂 固化土 微观分析 

分 类 号：X741[环境科学与工程—环境工程] TU449[建筑科学—岩土工程]