在受到水、大气、温度和生物等应力的作用z下，岩体的物质成分和结构发生变化，从而改变岩体力学性质的岩石称为风化岩。风化岩遇水后会发生一系列复杂的化学作用和应变软化过程，使其力学性质大幅度降低。而在海底沉管隧道的建设和使用过程中，风化岩遇水软化而引起的地基的不均匀沉降往往造成了重大的生命和财产损失。因此，如何深入而有效地了解这一内在规律具有非常重要的理论价值和实际意义。主要基于室内试验获取相关数据，揭示了在不同条件下风化岩遇水后的强度变化规律。分析了试样在天然状态和饱和状台下的应力应变曲线变化趋势，探讨了不同固结方式下风化岩的应力应变发展规律。", "ds_source": "
风化岩遇水后会发生一系列复杂的化学作用和应变软化过程，使其力学性质大幅度降低。本数据以三轴试验仪分别对风化岩在天然和饱和两种状态下进行常规三轴压缩试验为基础，主要记录了不同条件下风化岩遇水后的强度变化规律。", "ds_process_way": "
数据为设备实时测量值。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2019-01-01 00:00:00", "ds_acq_end_time": "2019-01-31 00:00:00", "ds_acq_place": "上海", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 677407, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "6dc2902f-3e12-40f2-b506-e2299e19e233.png", "ds_thumb_from": 2, "ds_ref_way": "管维东，风化岩层遇水软化三轴试验及分析数据集（2019年），国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn/)，2022，doi：10.12072/ncdc.nieer.db2811.2023", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "57a5e5a3-6fc5-43b5-a2ba-1f2ca54b7727", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.50" ], "quality_level": 3, "publish_time": "2023-06-13 15:42:36", "last_updated": "2023-07-01 02:10:08", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2811.2023", "i18n": { "en": { "title": "Triaxial shear test and analysis data set of weathered rock softening in water (2019)", "ds_format": "", "ds_source": "
\n& emsp; Experimental test.", "ds_quality": "
\n& emsp; The data quality is good.", "ds_ref_way": "", "ds_abstract": "
\n& emsp; Under the action of water, atmosphere, temperature and biological stress z, the material composition and structure of rock mass change, thus changing the mechanical properties of rock mass, which is called weathered rock. After encountering water, weathered rock will undergo a series of complex chemical actions and strain softening processes, which will greatly reduce its mechanical properties. In the process of construction and use of subsea immersed tunnel, the uneven settlement of the foundation caused by weathered rock softening with water often causes significant loss of life and property. Therefore, how to deeply and effectively understand this inherent law has very important theoretical value and practical significance. Based on the relevant data obtained from laboratory tests, the strength variation law of weathered rock after encountering water under different conditions is revealed. The trend of stress-strain curves of samples under natural state and saturated platform is analyzed, and the stress-strain development law of weathered rock under different consolidation modes is discussed.
", "ds_time_res": "", "ds_acq_place": "Shanghai", "ds_space_res": "", "ds_projection": "", "ds_process_way": "\n& emsp; The data is the real-time measured value of the equipment.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "应变软化", "风化花岗岩", "三轴压缩" ], "ds_subject_tags": [ "地质学" ], "ds_class_tags": [], "ds_locus_tags": [ "上海" ], "ds_time_tags": [ 2019 ], "ds_contributors": [ { "true_name": "管维东", "email": "780382843@qq.com", "work_for": "中交公路长大桥建设国家工程研究中心有限公司", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "管维东", "email": "780382843@qq.com", "work_for": "中交公路长大桥建设国家工程研究中心有限公司", "country": "中国" } ], "ds_managers": [ { "true_name": "管维东", "email": "780382843@qq.com", "work_for": "中交公路长大桥建设国家工程研究中心有限公司", "country": "中国" } ], "category": "其他" }