本数据集在天津大学水利工程仿真与安全国家重点实验室的弯道水槽中完成，该实验旨在通过测量并分析冻融条件下粘性土堤溃决过程中溃口形态和溃决区域的水力要素变化规律，探究堤防的溃决机理。该数据集包括溃口横向宽度和垂向深度，堤前、堤后、巴歇尔槽水位，巴歇尔槽处流量，测点流速包含x、y、z方向的分流速。", "ds_source": "
试验中在堤防顶部适宜位置处布置结构光传感器，实时测量并记录堤防各点的高程，即可获取溃口的三维轮廓；在溃口区域布设多普勒流速仪，该仪器可以测量溃口三个方向的流速；在堤前堤后布置浪高仪，以分析洪水波的变化过程；巴歇尔槽处的浪高仪可以测量主槽区下游水位，进而分析此处流量变化；水槽充水阶段，由主槽区上游的电磁流量计控制入流流量，待堤前水位稳定之后，开始采集溃口形态和测点流速。", "ds_process_way": "
溃口形态数据是由结构光传感器采集的数据经程序处理计算所得，其中的溃口宽度和垂向深度均指溃口形态平均值；x、y、z方向的流速由多普勒流速仪直接采集所得；堤前、堤后、巴歇尔槽水位由浪高仪直接采集所得；巴歇尔槽流量通过此处水位数据计算所得，陡坎移动速率通过计算所得。", "ds_quality": "
观测数据前试验仪器均通过校准，且处理数据均通过重复性检查。", "ds_acq_start_time": "2018-01-01 00:00:00", "ds_acq_end_time": "2021-12-31 00:00:00", "ds_acq_place": "天津大学水利工程仿真与安全国家重点实验室", "ds_acq_lon_east": 117.08999999999999, "ds_acq_lat_south": 39.34, "ds_acq_lon_west": 116.96000000000001, "ds_acq_lat_north": 39.53, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 739934, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "ad87f68c-2536-4dec-b19d-cad70fb3032c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "c55e1118-387b-4a0c-8dc5-70aa438c430d", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.iceflood.db2376.2022", "subject_codes": [ "170.55" ], "quality_level": 3, "publish_time": "2022-07-30 15:40:41", "last_updated": "2025-06-30 15:58:56", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.iceflood.db2376.2022", "i18n": { "en": { "title": "Data set of changes in hydraulic factors at measuring points of cohesive soil embankment collapse under freeze-thaw conditions (2018-2021)", "ds_format": "excel", "ds_source": "
In the test, the structured light sensor is arranged at the appropriate position on the top of the dike, and the elevation of each point of the dike is measured and recorded in real time, so that the three-dimensional contour of the breach can be obtained; Doppler current meter is arranged in the area of the breach, which can measure the velocity in three directions of the breach; The wave height meter is arranged in front of and behind the dike to analyze the change process of flood wave; The wave height meter at the Bachel trough can measure the downstream water level of the main trough area, and then analyze the flow change here; In the water filling stage of the flume, the inflow flow is controlled by the electromagnetic flowmeter at the upstream of the main tank area. After the water level in front of the dike is stable, the burst shape and flow velocity at the measuring point are collected.", "ds_quality": "
Before observing the data, the test instruments passed the calibration, and the processed data passed the repeatability check.", "ds_ref_way": "", "ds_abstract": "
This data set was completed in the bend flume of the State Key Laboratory of hydraulic engineering simulation and safety, Tianjin University. The experiment aims to explore the mechanism of dike collapse by measuring and analyzing the change law of hydraulic factors in the breach shape and breach area during the collapse of cohesive soil dike under freeze-thaw conditions. The data set includes the transverse width and vertical depth of the breach, the water levels in front of the dike, behind the dike and in the Bacher trough, the flow at the Bacher trough, and the flow velocity at the measuring points, including the diversion velocity in the X, y and Z directions.
", "ds_time_res": "日", "ds_acq_place": "State Key Laboratory of hydraulic engineering simulation and safety, Tianjin University", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The burst shape data is obtained by processing and calculating the data collected by the structured light sensor through the program, in which the burst width and vertical depth refer to the average value of the burst shape; x. The velocity in Y and Z directions is directly collected by Doppler current meter; The water levels in front of the dike, behind the dike and in the Bachel trough are directly collected by the wave height meter; The discharge of the Bachel trough is calculated from the water level data here, and the moving speed of the scarp is calculated.", "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, "ds_topic_tags": [ "时间", "溃口宽度", "垂向深度", "堤前水位", "堤后水位", "巴歇尔槽水位", "巴歇尔槽流量", "x方向流速", "y方向流速", "z方向流速", "陡坎移动速率" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "天津大学水利工程仿真与安全国家重点实验室" ], "ds_time_tags": [ 2018, 2019, 2020, 2021 ], "ds_contributors": [ { "true_name": "戚园春", "email": "qiyc_tju@163.com", "work_for": "天津大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "戚园春", "email": "qiyc_tju@163.com", "work_for": "天津大学", "country": "中国" } ], "ds_managers": [ { "true_name": "戚园春", "email": "qiyc_tju@163.com", "work_for": "天津大学", "country": "中国" } ], "category": "水文" }