云南大开门片区风化板岩力学性质及工程特性研究
摘要:掌握地基岩体的力学性质和工程特性，对评价岩土工程项目的安全性与稳定性至关重要。依托云南玉溪“十三五”规划某大型基建项目，对本区内主要地基土——中等风化炭质板岩和强风化炭质板岩的物理力学性质进行了深入研究。基于室内物理力学试验分别进行了中等风化板岩在天然和饱和状态下的单轴压缩试验，揭示了含水率增加对板岩单轴抗压强度的弱化规律，讨论了板岩在单轴应力作用下的典型破坏模式。基于室内颗粒分析试验对强风化板岩的级配特性进行描述，并基于现场原位剪切试验对其在不同含水率下的抗剪强度指标变化规律进行探讨。基于三种土工试验对中等风化板岩的化学组成以及强风化板岩的渗透性和承载力进行研究。研究成果可为本区域类似地质条件的工程建设提供参考。
Abstract:A clear understanding of the geotechnical mechanical properties and engineering characteristics of foundation rock mass is very important to evaluate the safety and stability of engineering projects. Based on a large infrastructure project during the 13th Five-Year Plan period in Yuxi, Yunnan Province, the physical and mechanical properties of moderately weathered and strongly weathered carbonaceous slate in the main foundation soil layers in this area were deeply discussed. Firstly, uniaxial compression tests of moderately weathered slate under natural and saturated conditions were carried out based on indoor physical tests. The influence of water content on the uniaxial compressive strength of slate was revealed, and the typical failure mode of slate under uniaxial stress was discussed. Secondly, the gradation characteristics of strongly weathered slate were described based on the indoor particle analysis test. What is more, the variation of shear strength index of strongly weathered slate under different water content was discussed based on the in-situ shear test. Finally, the chemical composition of moderately weathered slate and the permeability and bearing capacity of strongly weathered slate were studied in detail based on three kinds of geotechnical tests. The results can provide guidance for the construction with similar geological conditions in this area.
中文标题：
云南大开门片区风化板岩力学性质及工程特性研究
Mechanical Properties and Engineering Properties of Weathered Slate in Damen Area of Yunnan Province
作者：
寸春发1,,赵永顺1,郇久阳1,邱子娟1,何明明2
Cun Chunfa1,,Zhao Yongshun1,Huan Jiuyang1,Qiu Zijuan1,He Mingming2
作者简介:寸春发，男，1978年生，白族，云南大理人，高级工程师，主要从事岩土工程与水文地质研究工作。E-mail：312994782@qq.com
通讯地址：
1.云南建投基础工程有限责任公司，云南昆明 650000 2.西安理工大学岩土工程研究所，陕西西安 710048
1.YunnanConstructionandInvestmentFoundationEngineeringCo.,Ltd.,Kunming650000,Yunnan,China 2.InstituteofGeotechnicalEngineering,Xi’anUniversityofTechnology,Xi’an710048,Shaanxi,China
中图分类号:TU 41
doi:10.3969/j.issn.1007-2993.2022.05.010
出版物：岩土工程技术
收稿日期:2021-04-20
刊出日期:2022-10-08
关键词:风化板岩,单轴抗压强度,破坏模式,颗粒分析,原位剪切试验,工程特性
Key words:weathered slate,uniaxial compressive strength,failure mode,particle-size analysis,in-situ shear testing,engineering characteristics
文档包含图片数量：图片(11)张
文档包含表格数量：表格(7)个
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基金项目：
基金项目:国家自然科学基金资助项目（11902249）
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