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111.
Sang-Soo JEON 《山地科学学报》2014,11(2):336-344
Damage assessment for slopes using geographical information system (GIS) has been actively carried out by researchers working on several government organizations and research institutes in Korea. In this study, 596 slope damages were examined to identify the types of damage associated with dip angles, dip directions, and heavy rainfall resulting from typhoons in South Korea. Heavy rainfall of 100 mm to 300 mm resulted in 80% at the investigated slope damages. A GIS database was developed for highways, rainfall, soil or rock geometry, and types of damage. A grid of rainfall intensity was generated from the records of maximum daily rainfall. Contours for slope damages and heavy rainfall using optimal GIS mesh dimensions were generated to visualize damage patterns and show substantially strong correlation of rainfall with slope damages. The combination of remote sensing with the GIS pattern recognition process described in this work are being expanded for a new generation of emergency response and rapid decision support systems. 相似文献
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本文通过矿物使用的钻井液和酸化解堵液对储层岩石所作的损害评价试验证实,该区储层产能低的原因之一是钻井液和酸化解堵液使储层渗透率损害达35%-75%造成。针对该区储层实际,采用作者研制的酸液解堵模拟试验证实,可使储层渗透率恢复到原始值的89%-185%,平均恢复至原始值的110%,适用于该区储层的酸化解堵。 相似文献
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朝阳沟油田扶余油层单井产能控制因素分析 总被引:1,自引:0,他引:1
以朝阳沟油田生产试验区为例,论述了朝阳油田扶余油层单井产能的控制因素;油藏地质条件和油气层损害。油藏地质条件从根本上决定了单井产能的大小,油层损害不同程度地降低了油井的产能。 相似文献
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Effects of structural characterizations on fragility functions of bridges subject to seismic shaking and lateral spreading 总被引:1,自引:0,他引:1
This paper evaluates the seismic vulnerability of different classes of typical bridges in California when subjected to seismic shaking or liquefaction-induced lateral spreading. The detailed structural configurations in terms of superstructure type, connection, continuity at support and foundation type, etc. render different damage resistant capability. Six classes of bridges are established based on their anticipated failure mechanisms under earthquake shaking. The numerical models that are capable of simulating the complex soil-structure interaction effects, nonlinear behavior of columns and connections are developed for each bridge class. The dynamic responses are obtained using nonlinear time history analyses for a suite of 250 earthquake motions with increasing intensity. An equivalent static analysis procedure is also implemented to evaluate the vulnerability of the bridges when subjected to liquefaction-induced lateral spreading. Fragility functions for each bridge class are derived and compared for both seismic shaking (based on nonlinear dynamic analyses) and lateral spreading (based on equivalent static analyses) for different performance states. The study finds that the fragility functions due to either ground shaking or lateral spreading show significant correlation with the structural characterizations, but differences emerge for ground shaking and lateral spreading conditions. Structural properties that will mostly affect the bridges' damage resistant capacity are also identified. 相似文献
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海洋生态补偿机制是促进海洋资源科学开发利用与海洋生态环境质量改善、推动海洋经济高质量发展的一项重要环境经济手段。文章结合新时期海洋生态文明领域政策演进的新动向,梳理近年来我国主要沿海省(自治区、直辖市)海洋生态补偿制度实践的进展情况,从系统性视角总结分析国家和地方层面海洋生态补偿政策与法律制度建设的经验和差距。着眼于海洋生态补偿政策体系完善和地方管理机制的改进需求,从统筹协同角度,建议未来从政策协同、多元机制协同、跨部门协同、跨区域协同和信息资源协同等方面,推动建立完善陆海统筹的海洋生态补偿协同治理体系。 相似文献
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