深中通道西岛斜坡段的软弱地基采用深层水泥搅拌桩处理方案，西岛斜坡段隧道槽底以下淤泥类土（含1层淤泥、2层淤泥、3层淤泥质土、2-4层粉砂）的厚度3～18m比港珠澳大桥沉管隧道的淤泥层厚，受采砂扰动影响，1层淤泥的原位十字板强度仅有4.3~8.4kPa，是一种流态的淤泥。E1管节基槽开挖线下方1层淤泥的最大厚度达5m。槽底的表层浮泥需要挖除，基槽两侧浮泥还需要阻挡其流入基槽，确保基槽能够成槽。同时西岛斜坡段位于采砂坑范围内，且从详勘和初勘的对比看，2015～2017年挖砂坑内的地层仍存在变化，必须考虑淤泥和采砂坑对DCM桩的布置形式的影响。", "ds_source": "
数据文件DCM现场原位试验各级荷载施加沉降分布试验结果及分析。设计了2组试验（A1组和A1组），通过四级加载和四级卸载，验证各级荷载施加沉降。", "ds_process_way": "
实验试验。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2019-04-01 00:00:00", "ds_acq_end_time": "2019-05-31 00:00:00", "ds_acq_place": "西岛斜坡段", "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": 403681, "ds_files_count": 3, "ds_format": "pdf", "ds_space_res": "", "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "e6924a72-2e38-46e4-a1e1-45ad603a31c6.png", "ds_thumb_from": 2, "ds_ref_way": "", "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 15:43:08", "last_updated": "2026-05-13 10:35:14", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2818.2023", "i18n": { "en": { "title": "West Island Slope Section DCM in-situ test dataset (2019)", "ds_format": "", "ds_source": "
Data file DCM on-site in-situ test results and analysis of settlement distribution under various levels of load application. Two sets of experiments (Group A1 and Group A1) were designed to verify the settlement of each level of load through four level loading and four level unloading.", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
The soft foundation of the Xidao slope section of the Shenzhong Channel is treated with deep cement mixing piles. The thickness of the silt soil (including 1 layer of silt, 2 layers of silt, 3 layers of silty soil, and 2-4 layers of silt) below the bottom of the Xidao slope section tunnel is 3-18m, which is thicker than the silt layer of the Hong Kong Zhuhai Macao Bridge immersed tube tunnel. Due to sand mining disturbance, the in-situ cross plate strength of the 1 layer of silt is only 4.3-8.4kPa, which is a flowing silt. The maximum thickness of the layer of silt below the excavation line of the E1 pipe section foundation trench is 5m. The surface floating mud at the bottom of the trench needs to be excavated, and the floating mud on both sides of the foundation trench needs to be blocked from flowing into the trench to ensure that the trench can be formed. At the same time, the slope section of Xidao Island is located within the range of the sand pit, and from the comparison between the detailed survey and the preliminary survey, there are still changes in the strata inside the sand pit excavated from 2015 to 2017. The influence of silt and sand pit on the layout of DCM piles must be considered.", "ds_time_res": "", "ds_acq_place": "West Island Slope Section", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
Experimental experiments.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/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, "belong_to_nieer": false, "ds_topic_tags": [ "DCM", "载荷试验", "沉降" ], "ds_subject_tags": [ "地质学" ], "ds_class_tags": [], "ds_locus_tags": [ "中山" ], "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" }