2017年和2018年于北京进行浅层地质灾害声波特性识别模拟实验所得数据，观测要素包括压力、孔隙度、密度、声波速度等。此数据要素包括浅层气、浅水流、天然气水合物。在浅层气中包含着：浅层气压力、纵波速度、围压、密度、孔隙度、粒径；在浅水流中包含着：浅水流压力、纵波速度、围压、密度、孔隙度、粒径；在天然气水合物中包含着：盐水饱和度、水合物样品长度、水合物转化率、水合物饱和度、纵波声速、温度、压力。数据资源采集时间范围为2017年6月1日-2018年12月30日，利用声波探测系统测量纵波在正常地层以及不同压力等级浅层气、不同饱和度天然气水合物中的传播速度用于建立浅层地质灾害声波预测模型。
", "ds_source": "实验试验，自主产生。
", "ds_process_way": "实验装置主要由能够模拟-30℃、30MPa的高压低温反应釜、植入式可控压密闭气囊、低温恒温水浴系统、围压控制系统、注气供液系统、声波探测系统、数据采集和处理系统组成。使用PT100铂电阻温度传感器测量反应釜内部的温度场分布，量程-30℃~100℃，精度为0.25%FS；布置3个压力测点测量反应釜内压力，压力传感器量程0~30MPa，精度0.1%FS。模拟浅层气的超压环境，高压气体流量计的增压范围为0~10MPa，流量0~2000mL/min，控制精度0.2%FS。声波探测系统硬件主要由声波换能器、单脉冲声波发射卡以及数据采集卡组成。实验采用的换能器为压电复合材料，具备耐压和防水密封性能，纵波换能器频率为200kHz和500kHz。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2017-06-01 00:00:00", "ds_acq_end_time": "2018-12-30 00:00:00", "ds_acq_place": "北京市", "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": "login-access", "ds_total_size": 45888, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "a3402ebc-b62a-4425-98db-b74d736fcce6.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "aaf309a1-cdf4-4049-be08-c06f80c4061f", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.SRIPE.db1677.2022", "subject_codes": [ "170.50" ], "quality_level": 3, "publish_time": "2022-02-25 11:48:56", "last_updated": "2025-05-29 11:36:28", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.SRIPE.db1677.2022", "i18n": { "en": { "title": "Experimental data set of acoustic characteristics identification of shallow geological hazards in Beijing (2017-2018)", "ds_format": "Excel", "ds_source": "Experimental experiments, independently generated.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "The data obtained from the simulation experiments of identifying the acoustic characteristics of shallow geological hazards conducted in Beijing in 2017 and 2018 includes observation elements such as pressure, porosity, density, and acoustic velocity. This data element includes shallow gas, shallow water flow, and natural gas hydrates. Shallow gas contains: shallow gas pressure, longitudinal wave velocity, confining pressure, density, porosity, and particle size; In shallow water flow, there are: shallow water flow pressure, longitudinal wave velocity, confining pressure, density, porosity, and particle size; Natural gas hydrates contain: saltwater saturation, hydrate sample length, hydrate conversion rate, hydrate saturation, longitudinal wave velocity, temperature, and pressure. The data resource collection time range is from June 1, 2017 to December 30, 2018. The acoustic detection system is used to measure the propagation speed of longitudinal waves in normal formations, shallow gas of different pressure levels, and natural gas hydrates of different saturation levels to establish a shallow geological hazard acoustic prediction model.
", "ds_time_res": "日", "ds_acq_place": "Beijing city", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The experimental setup mainly consists of a high-pressure and low-temperature reaction vessel capable of simulating -30 ℃ and 30MPa, an implantable controllable pressure sealed airbag, a low-temperature constant temperature water bath system, a confining pressure control system, an injection and supply system, an acoustic detection system, and a data acquisition and processing system. Using PT100 platinum resistance temperature sensor to measure the temperature field distribution inside the reaction kettle, with a range of -30 ℃~100 ℃ and an accuracy of 0.25% FS; arranging three pressure measuring points to measure the pressure inside the reaction kettle, with a range of 0~30MPa and an accuracy of 0.1% FS. Simulating the overpressure environment of shallow gas, the high-pressure gas flowmeter has a boosting range of 0~10MPa, a flow rate of 0~2000mL/min, and a control accuracy of 0.2% FS. The hardware of the acoustic detection system mainly consists of acoustic transducers, single pulse acoustic emission cards, and data acquisition cards. The transducer used in the experiment is a piezoelectric composite material with pressure resistance and waterproof sealing performance. The longitudinal wave transducer has frequencies of 200kHz and 500kHz.
", "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": [ "浅层气", "天然气水合物", "饱和度", "孔隙度", "密度", "含水率", "压力", "声波速度" ], "ds_subject_tags": [ "地质学" ], "ds_class_tags": [], "ds_locus_tags": [ "北京市" ], "ds_time_tags": [ 2017, 2018 ], "ds_contributors": [ { "true_name": "柯珂", "email": "keke.sripe@sinopec.com", "work_for": "中国石油化工股份有限公司石油工程技术学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "柯珂", "email": "keke.sripe@sinopec.com", "work_for": "中国石油化工股份有限公司石油工程技术学院", "country": "中国" } ], "ds_managers": [ { "true_name": "柯珂", "email": "keke.sripe@sinopec.com", "work_for": "中国石油化工股份有限公司石油工程技术学院", "country": "中国" } ], "category": "其他" }