综合物化探方法在黑龙江滚子沟地区铀矿勘查中的应用与研究

综合物化探方法在我国矿产勘查领域中取得了较好的找矿效果,近年来被广泛应用。本次研究利用航空伽玛能谱测量、地面伽玛能谱测量、音频大地电磁测量相结合的方式,对黑龙江省嘉荫县磨石山滚子沟地区进行铀矿勘查工作。首先通过航空伽玛能谱测量数据,选定重点找矿地区;其次在地表利用地面伽玛能谱测量,探寻了铀矿化异常信息;利用音频大地电磁测量,查明其断裂构造形态特征;最后利用槽探工程,对铀异常线索进行了揭露,形成了一套航空(综合选区)—地面(查明铀异常特征)—地下(探槽揭露)"三位一体"综合找矿方式,并取得了较好的找矿效果。     

轻型无人机航磁调查系统及在矿产勘查中的应用前景

我国重要金属矿区及外围大多地形复杂,且大部分中高山地区的矿产资源潜力巨大,为克服该类地区地面物探勘查难度大、周期长、精度分辨率低等不利因素,提出了轻型无人机沿地形起伏飞行的测量方式快速获取低空高分辨率航磁数据的方法,结合地面异常查证实现地形复杂地区的快速找矿突破。从已完成的无人机航磁系统的对比试验和勘查应用效果看,新型无人机航磁系统对比传统无人机航磁具有仿地能力强、分辨率精度高以及成本费用低等特点,可以实现复杂山区快速航磁调查、挖掘矿山深部及外围资源潜力,直接为地质找矿服务,具有广阔的应用前景和推广价值。     

综合物探方法在陕西富县地区铀矿勘查中的应用

鄂尔多斯盆地南缘黄土覆盖严重,常规地质手段难以实现找矿效果,本文选取盆地南缘富县地区作为研究区,应用航空伽玛能谱测量、活性炭测氡和音频大地电磁测量等物探方法,开展从区域分析到局部验证的综合研究.首先通过分析航空伽玛能谱测量数据,圈定重点找矿地区;其次利用地面活性炭测氡,查明铀矿化异常信息;再次利用音频大地电磁测量,查明...     

RaA法测氡的基本原理与应用实例——以HDC型测氡仪为例

目前,在我国铀矿勘查领域中,利用钋、氡等放射性子体特征来勘查、寻找铀矿是较为普遍的一种方式,例如:伽玛能谱测量、放射性气体测量、土壤氡测量等。其中,在岩体表面或地表浅部,主要采用地面伽玛能谱测量的方式,直接寻找铀异常或铀矿化线索;随着勘查深度的增加,主要采用氡及其子体测量方法探寻与铀成矿相关的信息。其中,RaA法作为一种直接、快速、效果明显的氡气测量方法,近年来,在我国铀矿勘查领域中应用日益广泛。文章综合介绍了RaA法测氡的工作原理,并通过采用HDC型测氡仪在两个不同地区进行RaA法测氡的实例效果,说明该方法在目前我国铀矿勘查中的有效性和适用性。     

若尔盖铀矿综合物探找矿方法研究与应用

采用高精度磁测、音频大地电磁测量及地面伽马能谱测量等物探方法,在四川若尔盖铀矿区开展勘查。浅表通过地面伽马能谱测量,探寻铀矿化相关的异常信息;再通过高精度磁测及音频大地电磁测量,剖析深部断裂构造特征,结合钻孔资料,探寻若尔盖铀矿找矿新方法,并应用到实际生产中,为该区进一步找矿提供依据。     

新型AGRSS航空伽玛能谱系统的应用效果及分析

AGRSS航空伽玛能谱系统(简称AGRSS系统)是核工业航测遥感中心于2014年研制的新型航空放射性测量系统,采用自主开发的数字化多道分析器和数据通讯技术以及自动稳谱方式等,同时开发了智能化的综合收录控制系统,实现了对航空伽玛能谱测量数据的收录与控制,并具有同步采集航磁数据的功能。文章以AGRSS系统在黑龙江省完达山—太平岭地区航测飞行数据为例,初步分析了该系统在基础地质研究、多金属矿产勘查、辐射环境监测等方面的应用效果。结果表明,AGRSS系统可广泛应用于基础地质研究、铀矿和多金属矿产勘查、辐射环境监测等领域。     

直接解调法在野外γ能谱解析中的应用研究

本文阐述了直接调解法的基本原理,并采用直接解调方法对野外γ能谱仪的谱线进行重构,从而获得净峰面积。将该方法应用到能谱刻度和仪器标定中,通过在混合模型上的测量结果比较,表明直接解调方法可以有效提高测量精度。有效提高野外γ能谱测量效率,从而达到高效运用于核资源勘查中的目的。     

山东德州地区矽卡岩型铁矿找矿方法研究

近年来,在山东省德州市东南部深覆盖区的矽卡岩型铁矿勘查工作取得了突破,发现了潘店、李屯、大张铁矿床,矿体厚度1. 57～97. 45 m,矿石品位为TFe 51. 82%～56. 75%、m Fe 47. 20%～51. 70%。本次研究通过总结区内勘查经验及对比找矿方法,探讨研究区铁矿找矿方法的适用性和有效性,旨在指导今后在类似地区矽卡岩型铁矿勘查工作。研究区勘查工作表明,"系统收集分析资料—面积性基岩地质编图—面积性物探测量—重点区综合物探剖面测量—成矿有利地段异常查证—铁矿资源潜力评价及综合研究工作"的勘查流程在研究区矽卡岩型铁矿勘查工作中效果显著。研究区找矿过程中"地质—磁法—重力—电法—地震—钻探—测井—综合研究"等找矿方法效果明显。在今后勘查工作要重视大比例尺高精度航空磁法测量、大比例尺"重磁电震"等综合物探剖面等手段的应用;同时要不断优化勘查方案,以深入推进类似地区铁矿勘查工作。     

论空天地一体化辅助城乡规划督察技术服务体系

对卫星遥感技术在城乡规划督察现状工作中的应用进行了分析。针对不足部分,提出以遥感监测为主要手段,集成卫星遥感、无人机航空摄影技术、地面移动测量技术和移动互联网技术的空天地一体化辅助城乡规划督察技术服务体系,尝试以督察图斑快速定位与反馈技术、督察图斑精确定位与分发技术和无人机航测与地面移动测量集成的三维高速建模与取证技术为支撑,配以规范的空天地一体化辅助城乡规划督察技术指引,为卫星督察工作开展提供技术支持。     

青海省野牛脊航磁异常的地质意义及找矿潜力分析

对野牛脊航磁异常进行地面查证工作,通过在重点查证小区开展地物化综合剖面测量、磁法剖面测量、土壤测量、地质草测、槽探揭露等勘查手段对航磁异常进行剖析,评价航磁异常的地质意义,在此基础上对该航磁异常对应范围的找矿潜力情况进行了初步评价,认为该航磁异常对应的深部具有进一步找矿的潜力。     

Real-time automatic crack detection method based on drone

Real-time automated drone-based crack detection can be used for efficient building damage assessment. This paper proposes an automated real-time crack detection method based on a drone. Using a lightweight classification algorithm, a lightweight segmentation algorithm, a high-precision segmentation algorithm, and a crack width measurement algorithm, the cracks are classified, roughly segmented, finely segmented, and the maximum width is extracted. A crack information-assisted drone flight automatic control algorithm for automatic crack detection guides the drone toward the crack position. The effectiveness of the crack detection algorithm and the crack information-assisted drone flight automatic control algorithm was tested on two different datasets, a two-story building, and a 16-m-high shaking table test building. The results show that crack detection can be finished in real-time during the flight. Using the proposed method can significantly improve the MIoU of crack edge detection and the accuracy of maximum crack width measurement under the non-ideal shooting conditions of the actual inspection situation by automatically approaching the vicinity of the crack.     

物探方法在喀拉扎地区铀矿勘查中的应用

文章简述了喀拉扎地区地质概况、成矿岩性特征及成矿岩层物性参数特征。根据喀拉扎地区地质特点、成矿类型、含矿岩体地层与背景地层物性参数上存在较大差异性,及钙质砾岩与铀矿化正相关性,选取可控源音频大地电磁测量、地面伽玛能谱测量、伽玛总量路线调查及综合测井的勘探方法,并分别说明单一方法在喀拉扎地区的找矿应用及效果,最后综合分析了方法组合在该地区找矿中的应用效果,认为白垩系下统清水河组(K_1q)为该区的铀成矿有利地层,钙质砾岩为主要含矿岩体。     

土壤源热泵系统的地埋管热平衡分析

主要针对土壤源热泵系统的垂直地埋管系统进行实际测试,从春夏秋冬4个季节分析单U管和双U管形式与土壤温度的关系,重点分析了土壤源热泵地埋管系统与土壤热平衡问题.     

Rainfall measurement based on in-situ storm drainage flow sensors

Data for adjustment of weather radar rainfall estimations are mostly obtained from rain gauge observations. However, the density of rain gauges is often very low. Yet in many urban catchments, runoff sensors are typically available which can measure the rainfall indirectly. By utilising these sensors, it may be possible to improve the ground rainfall estimate, and thereby improve the quantitative precipitation estimation from weather radars for urban drainage applications. To test the hypothesis, this paper presents a rainfall measurement method based on flow rate measurements from well-defined urban surfaces. This principle was used to design a runoff measurement system in a parking structure in Aalborg, Denmark, where it was evaluated against rain gauges. The measurements show that runoff measurements from well-defined urban surfaces perform just as well as rain gauges. This opens up the possibility of improving the ground rainfall estimate by the use of flow rate measurements.     

无人机在危险化学品事故侦检中的应用研究

为提升灾害现场无人机的侦检应用功能,以无人机在现场侦检中存在的问题入手,采用CFD 仿真模拟观察无人机悬停状态下风场情况,拟定了无人机侦检模块的安装位置。以氨气为例,结合试验场地基本信息,构建气体扩散数值模拟方案。通过对比静态侦检仪器与无人机机载模块的数据信息,验证了无人机侦检采集数据的科学性;通过对比无人机机载模块侦检数据与仿真模拟数据,提出了“无人机先期侦检,CFD 后期预测”的侦检方法。研究结果显示,该方法科学可行。     

基于总输入能量谱与瞬时输入能量谱的设计谱修正

地震动中的长周期成分对长周期结构的影响不容忽视,现行的设计反应谱为了保证长周期结构抗震设计具备保守性,人为增大了特定频段和特定场地条件的谱值。针对目前设计谱的不足,依据线性单自由度体系的地震动总输入能量谱和瞬时输入能量谱,对规范反应谱5Tg～6s直线下降段提出调整方法。从具有速度 脉冲特征的长周期地震记录中选出能量谱值最大的地震记录加以说明,得到修正后的加速度谱与相应的拟速度谱和位移谱。建议的反应谱修正方法综合体现了总输入能量与瞬时输入能量的特征,对于工程结构设计具有重要的理论意义和实用价值。     

An Unmanned Aerial Vehicle‐Based Imaging System for 3D Measurement of Unpaved Road Surface Distresses1

Abstract: Road condition data are important in transportation management systems. Over the last decades, significant progress has been made and new approaches have been proposed for efficient collection of pavement condition data. However, the assessment of unpaved road conditions has been rarely addressed in transportation research. Unpaved roads constitute approximately 40% of the U.S. road network, and are the lifeline in rural areas. Thus, it is important for timely identification and rectification of deformation on such roads. This article introduces an innovative Unmanned Aerial Vehicle (UAV)‐based digital imaging system focusing on efficient collection of surface condition data over rural roads. In contrast to other approaches, aerial assessment is proposed by exploring aerial imagery acquired from an unpiloted platform to derive a three‐dimensional (3D) surface model over a road distress area for distress measurement. The system consists of a low‐cost model helicopter equipped with a digital camera, a Global Positioning System (GPS) receiver and an Inertial Navigation System (INS), and a geomagnetic sensor. A set of image processing algorithms has been developed for precise orientation of the acquired images, and generation of 3D road surface models and orthoimages, which allows for accurate measurement of the size and the dimension of the road surface distresses. The developed system has been tested over several test sites with roads of various surface distresses. The experiments show that the system is capable for providing 3D information of surface distresses for road condition assessment. Experiment results demonstrate that the system is very promising and provides high accuracy and reliable results. Evaluation of the system using 2D and 3D models with known dimensions shows that subcentimeter measurement accuracy is readily achieved. The comparison of the derived 3D information with the onsite manual measurements of the road distresses reveals differences of 0.50 cm, demonstrating the potential of the presented system for future practice.