Thermal conductivity measurement of the synthetic samples of bottom sediments containing methane hydrates

The experimental setup is described, which makes it possible to simulate the quartz sand samples, containing methane hydrates, and to measure their thermal conductivity, using a needle probe of constant power. The method and results of measurements at different temperatures and pressures are considered. It is established that under the P-T-conditions close to the equilibrium for methane hydrate, the measurements result in the essential overestimation of the thermal conductivity the samples, i.e., to an anomalous increase in its calculated values. This is because of the dissociation (with the heat consumption) of the part of hydrates near the needle probe under the action of its heater. It is possible to conclude that this feature (the anomalous increase in the calculated values of thermal conductivity) is certain evidence for the presence of a noticeable quantity of hydrates in the sediments. This observation offers a new possibility of utilization of the geothermal method for prospecting the subsea gas hydrate accumulations. Our conclusions are confirmed by the results of measurements in situ of the thermal conductivity of the bottom sediment of the Black Sea [Kutas et al., 2005].     

高分辨率非线性三维整体反演研究(英文)

高分辨率非线性三维整体反演方法是基于非线性理论,在层位控制下,将工区多井(或全部井)的测井数据与井旁地震道数据输入具有多输入多输出的网络,同时进行整体训练,可获得整个工区的自适应权函数,并建立综合非线性映射关系,并根据储层在纵横方向上的地质变化特征更新这种非线性映射关系,这样,就能对反演过程及其反演结果起到约束和控制的作用,从而获得稳定且分辨率高的地震反演剖面(速度反演剖面/波阻抗反演剖面/密度反演剖面),实现整体反演,该方法通过模型试算和实际资料处理,获得较好的地质效果,证明该方法精度高、实用性强,可用于储层的定量分析。     

广域土地卫片执法检查系统的设计与实现

采用先进的技术和创新的模式,设计了土地卫片执法检查系统。在了解卫片执法检查现状的基础上,结合卫片执法检查工作的新形势、新政策,介绍了系统的关键技术,提出了系统的卫片执法业务逻辑设计,对系统的管理、填报、展示、统计、汇总、调查、取证等主要功能及组成进行了设计与实现,创新了图斑精细划分、智能比对分析和快速主动核查的卫片执法检查模式,提升了卫片执法检查工作的效率和核查精度。     

智能公交信息采集系统的设计与实现

随着社会步入信息共建共享的时代,如何充分利用社会资源更好地为公众提供服务成为政府部门一直思考的问题。本文基于社会关注的“公交服务”热点,在总结分析传统公交信息采集方式的基础上,介绍了智能公交信息采集系统的建设方案,阐述了系统实现的关键技术,并分析了系统的应用实效和后续推广价值。     

江西省朱溪矿区钻探施工回顾与思考

在介绍朱溪矿区钻遇地层特点的基础上,系统分析了钻孔深度大、易斜,相对浅孔而言地层更复杂,钻孔质量要求尤其是孔斜要求更为严格等施工难点,总结了主要钻探装备选用和钻探施工管理工作,以及钻进方法、钻孔结构、钻头选用、钻进技术参数、冲洗液选用、护孔堵漏措施等。建议今后深孔施工中必须提高钻探装备的施工能力、遏制重大孔内事故发生、坚持预防为主治理为辅的孔斜防治原则、抓好泥浆护孔等工作。     

Intelligent control for modelling of real‐time reservoir operation

This paper presents a new approach to improving real‐time reservoir operation. The approach combines two major procedures: the genetic algorithm (GA) and the adaptive network‐based fuzzy inference system (ANFIS). The GA is used to search the optimal reservoir operating histogram based on a given inflow series, which can be recognized as the base of input–output training patterns in the next step. The ANFIS is then built to create the fuzzy inference system, to construct the suitable structure and parameters, and to estimate the optimal water release according to the reservoir depth and inflow situation. The practicability and effectiveness of the approach proposed is tested on the operation of the Shihmen reservoir in Taiwan. The current M‐5 operating rule curves of the Shihmen reservoir are also evaluated. The simulation results demonstrate that this new approach, in comparison with the M‐5 rule curves, has superior performance with regard to the prediction of total water deficit and generalized shortage index (GSI). Copyright © 2001 John Wiley & Sons, Ltd.     

一种新的GIS智能分析框架--GIS智能体

提出了GIS智能体(GIS intelligent agent．GIS—IA)的概念、结构及实现原理。实例研究表明．基于GIS—IA的智能分析框架是实现空间决策分析的一种有效途径。     

Characterizing frictional behavior for use in predicting the seismic response of unattached equipment

Characterizing friction is a fundamentally important aspect of modeling the seismic response of a body resting on any mechanical interface. In the context of rigid bodies mounted within building structures, the numerous types of elements and interfaces encountered in practice require specific characterization before any modeling assumptions can be undertaken. To this end, in this paper, the specific problem of characterizing the frictional behavior for a variety of small equipment types typically found in Biological and Chemical Science laboratories is studied using two different methods of testing. A simple approach is presented to determine the instantaneous coefficients of friction considering inertial effects. Resulting coefficients of static friction μ_s and kinetic friction μ_k for these types of equipment and their plausible range of uncertainty are presented. Analytical comparisons with shake table experiments, using mean frictional resistance values, illustrate that reasonable estimations of time history response can be determined. The accuracy of the prediction increases as the effects of stick-slip are minimized.     

测绘装备超前标准化初探

本文简要介绍超前标准化的概念及作用，分析测绘标准化现状和实施超前超前标准化的必要性，提出实施测绘超前标准化的几点建议。     

东湖污染物来源的智能识别方法

为识别东湖污染物来源,建立排污口与主要致污因子之间的对应关系,提出了污染物来源智能识别方法;该方法巧妙耦合了对应分析、模糊C-均值聚类及聚类有效性函数等方法,并用加速遗传算法有效解决了这一复杂问题。使用该方法于东湖污染物来源识别,快速得出了排污口与污染物之间的6类对应关系,为东湖污染综合治理提供了合理的决策依据。该方法在排污口众多、污染物来源复杂的城市水体污染治理中,具有一定的推广应用价值。