平板振捣器压实处理沙漠浅层松散地基试验研究

报道利用平板振捣器压实处理新疆塔克拉玛干沙漠浅层松散地基的试验研究成果 ,从最佳施工含水量和浇水后时间控制、压实遍数、压实分层厚度等参数的确定 ,施工工艺及应用效果等方面进行了总结     

换土垫层法在某工程中的应用实例

本文就龙岩某开发区A幢住宅楼基础工程设计中采用换土垫层法进行地基处理后 ,对房屋的沉降和经济指标进行对比分析 ,证明采用该方法处理经济可行。处理后的地基强度和变形符合设计要求     

胶接接头设计及检验方法

介绍了胶接接头的设计原则,对胶接前零件的表面及涂胶处理作了说明,同时介绍了初步的胶接工艺流程与检验方法．扼要对胶接技术与传统的连接方式进行了比较。     

Analysis of fly ash heavy metal content and disposal in three thermal power plants in India

The study investigates the heavy metal content of fly ash and bottom ash from three major power plants in North India, using flame atomic absorption spectrometry. It also studies the prevalent disposal methods used at these sites. The ashes were analysed for the presence of Cr, Mn, Pb, Zn, Cu, Ni and Co and detectable levels of all were found in both fly ash and bottom ash. The concentrations of Cr and Zn were highest while Co concentration was less. The wet disposal method is used in two of the power plants (site 1 and site 3). Neither of the sites uses ash pond lining in the construction of the ash ponds, hence leaching of the heavy metals is possible. Site 2 has adopted 100% dry disposal system which allows better utilization but incurs additional costs. Better management practices, increased utilization and proper disposal practices need to be undertaken to minimize the adverse environmental impact.     

Landslide and mudflow disaster in disposal site of surplus soil at Higashi-Hiroshima due to heavy rainfall in 2009

The collapse of a filling occurred due to heavy rain in Higashi-Hiroshima City׳s Shiwa District at about 5:30 am July 25th, 2009. The filling was made of surplus soils, and it contained a mass of water supplied from rainfall and ground water flow of a permeable layer at the bottom of the filling. The collapsed soil flowed down and destroyed a house. In this paper, the cause of this disaster is discussed. The site of the disaster was used as the dumping site of surplus soils, after several changes of ground formation. The history of the geographical change was reconstructed by the image processing of old map, aerial photographs, result of 3-dimentional laser survey carried out after collapse and the measurement of thickness of collapsed soil by dynamic cone penetration test. According to the result of processing, the shape and the size of the filling before collapse was reconstructed. The relationship between the rainfall and the groundwater in the river sediments layer over which the filling was constructed was determined. A stability analysis of the filling was conducted considering the rise of the groundwater level in the filling and the laboratory measured strength parameters. The results of the stability analysis showed that the collapse would have taken place when the groundwater level rose by about 9 m due to the supply of groundwater through the river sediments layer.     

石油化工钢储罐地基处理技术规范SH／T3083—1997简介

中国石化总公司批准发布的《石油化工钢储罐地基处理技术规范》自１９９８年３月１日起施行，本文作者作为主要编制工作负责人，在对该规范内容予以简要介绍的同时，对该规范的编制过程和特点进行了深入说明，以利其在石化储罐建设工程中发挥应有的效益。     

钻井过程中硫化氢的处理工艺

目的：防止钻井过程中出现的硫化氢对人身安全和钻具造成危害。方法：分析氢脆破坏机理和处理硫化氢的化学原理。结果：提出了处理硫化氢的关键技术，并结合塔中162井的实钻经验，总结出了钻井过程中对硫化氢的几点认识。结论：提高泥浆pH值、加入除硫剂及提高泥浆密度等措施是钻井过程中处理硫化氢的关键技术，从而有利于富含硫化氢的灰岩、白云岩等裂缝性油气藏的钻井生产。     

SH/T3083-1997《石油化工钢储罐地基处理技术规范》的编制背景和内容简介

中国石油化工总公司批准发布的《石油化工钢储罐地基处理技术规范》自1998年3月1日起施行，本文作者作为主要编制工作负责人，在对该规范内容予以简要介绍的同时，对该规范的编制过程和特点进行了深入说明，以利其在石代储罐建设工程中发挥应有的效益。     

水基复合型化学清洗剂在旧输油管道修复中的应用

1前言油田管道长期输送含有Cl-、S2-和各种细菌的腐蚀性介质，金属腐蚀相当严重。有的新铺设管道投产半年至一年、最短的仅三个月就腐蚀穿孔，造成油水外溢而被迫停止输送，甚至引起火灾、爆炸、污染环境等严重后果，造成的直接经济损失巨大，间接损失难以估计。为了防止腐蚀，     

连续重整再生器试运故障的排除

利用引进专利技术设计、制造、安装的连续重整装置的再生器具有内件复杂和安装精度高的特点，其安装检验和气密试验通过后，在催化剂流动循环试运行时出现了催化剂跑漏、压力降升高的故障。经过中外专家通力合作，在反应系统不停车的情况下，及时排除了故障，保证了催化重整装置一次试车投产成功。