南方海相页岩气“二元富集”规律——四川盆地及周缘龙马溪组页岩气勘探实践认识

继JY1井龙马溪组页岩测试获得高产工业气流,实现南方海相页岩气的战略突破之后,近期焦石坝地区多口开发井获得高产天然气流,展现出四川盆地海相页岩气勘探的良好前景。通过对四川盆地及周缘多口井的岩性、有机地球化学、岩石矿物含量、物性、储集类型、微观孔隙结构特征、裂缝发育程度、含气量和气井产量、压力等钻探成果及分析测试资料进行深入解剖研究,探索并提出了复杂构造区海相页岩气"二元富集"规律,即:深水陆棚优质泥页岩发育是页岩气"成烃控储"的基础;良好的保存条件是页岩气"成藏控产"的关键。本文对中国南方海相页岩气的高效勘探开发具有重要的借鉴、指导意义。     

青藏高原盐湖战略性钾资源元素含量变化特征及影响因素

青藏高原盐湖赋存着丰富的钾资源元素。近年来,在全球变暖和大规模人工开发背景下,青藏高原盐湖卤水钾含量和矿化度发生显著变化。系统对比了青藏高原31个盐湖近年来和1990s之前卤水的钾离子含量和矿化度变化情况,分析其主要影响因素。结果显示,近年来青藏高原盐湖钾离子含量和矿化度总体呈现下降趋势,但不同盐湖变化程度不同;藏北高原、可可西里高原、西昆仑等地区盐湖主要受气候-构造-水文等自然因素影响,钾离子和矿化度下降明显;柴达木盆地盐湖受资源开发和人为干预等因素影响,卤水钾离子含量下降,而矿化度略有增加。     

耕地空间资源动态变化与驱动力分析

通过定性与定量相结合,对比研究等分析方法研究宜君县近9年来耕地变化的主要因素及耕地变化驱动力。结果表明总人口、国民生产总值、二三产业增加值、固定资产投资是耕地变化的主要驱动力,利用回归分析方法预测宜君县今后一段时间内,在影响耕地的驱动力因子保持不变的情况下,耕地面积将持续减少,因此,为了宜君县的可持续发展,认为应该做好强化土地用途管制制度,建立耕地保护目标责任制,重视提高耕地质量的技术等措施。     

鄂尔多斯盆地富县地区延长组成岩相特征及控制因素

通过野外剖面、岩心观察、薄片鉴定,结合扫描电镜与能谱分析等测试手段,在充分认识富县地区长6、长8油层组储层特征、成岩作用基础上,研究长6、长8油层组成岩相类型.主要成岩相包括有泥岩强烈压实相、砂岩压实(压溶)相、砂岩剩余原生粒间孔隙-次生溶蚀孔隙相、砂岩次生溶蚀孔隙相和微裂缝相等5种类型.结合沉积环境及沉积相平面展布特征,阐述了成岩相平面分布,结合储层发育特征主控因素深入研究成岩相特征主控因素,表明沉积环境为成岩相特征提供了物质基础,沉积物在后期成岩演化过程中受成岩作用控制,即成岩相为沉积物在成岩演化后的具体体现.     

爆破地震效应及其对附近建筑物影响因素的探讨

根据工作实践,围绕爆破地震效应及其对附近建筑物的影响因素进行了探讨和分析,阐明了爆破地震效应影响附近建筑物的因素,有助于减少爆破危害,对生产过程中的爆破工作具有一定的参考意义。     

Factors influencing the behavior of buried pipelines subjected to earthquake faulting

Seismic ground faulting is a severe hazard for continuous buried pipelines. Over the years, researchers have attempted to understand pipe behavior, most frequently via numerical modeling and simulation. However, there has been little, if any, physical modeling and tests to verify the numerical modeling approaches and assumptions. This paper presents results of five pairs of centrifuge tests designed to investigate the influence of various factors on the behavior of buried high-density polyethylene (HDPE) pipelines subjected to strike-slip faulting. Parameters considered are the soil moisture content, fault offset rate, relative burial depth (H/D), and pipe diameter. The centrifuge test results show that pipe behavior, specifically pipe strain, is nominally not affected by the soil moisture content and fault offset rate when the pipe is subjected to strike-slip faulting. On the other hand, the burial depth ratio (H/D) and pipe diameter influence peak pipe strain, and in some cases, the ground soil failure pattern.     

中国农田耕层土壤有机碳变化特征及控制因素

通过收集我国1980~2006年以来966个样点农田耕层土壤有机碳的实测数据,以及各样点的气温和降水数据,分析中国农田土壤有机碳变化特征,对变化的原因和发展趋势进行了探讨,对比分析了气温与降水对水稻土与旱作土固碳能力的差异,以及气温和降水对不同区域土壤有机碳的影响。结果表明:总体上我国实测点耕作表层土壤有机碳呈上升趋势,79%增幅样本主要集中在年增幅为0~3%的区间。农田土壤有机碳的含量受制于气温与降水,及水热条件的组合。20年来,全国农田土壤耕层有机碳含量的分布格局没变。农田土壤有机碳的变化,主要受人类活动的影响。土地利用方式对土壤固碳差异明显,水稻土有机碳水平明显高于旱地,水田耕层有机碳含量为旱地耕层有机碳含量的175~176%。     

Research on quality changes and influencing factors of groundwater in the Guanzhong Basin

This paper studies the distribution features, the chemical elements beyond standards and the influencing factors of shallow groundwater quality in the Guanzhong Basin through the data monitored in the last twenty years. The final purpose is to comprehensively evaluate the divisions of groundwater quality in the Guanzhong Basin. Results show that , the groundwater quality is in good shape, and suitable for drinking. Drinking accounts for 16.02% of the total, most of which are distributed in the lubotan of Weibei. Some come from loess plateau of Qian-Liquan County and some are generated by the industrial pollution of Xingping City. Materials exceeding standards include chloride, sulfate, three nitrogen, fluoride, manganese, iron, hexavalent chromium and so on. The main factors influencing the quality of shallow groundwater include groundwater exploitation, natural background value of special components and precipitation, among which the groundwater exploitation poses the greatest impact. The depth of water is positively correlated with the concentration of sulfate, nitrate and total hardness.     

腾冲明光老波厂铅锌矿围岩蚀变及找矿标志

矿体产于白垩纪马头窝单元（K1^7M^λπ）石英斑岩与石炭系上统空树河组三段二层（C2k^3-3）地层的石英砂岩、长石石英砂岩接触带上,或上述两类岩石的破碎带中,矿体与围岩界线常呈波状起伏,呈突变或渐变接触。矿区围岩蚀变明显,有进一步找矿的前景。