利用群孔抽水试验资料进行水位预测预报

在城镇、工业大型供水水源地的勘察中，都要求进行群孔抽水试验。但群孔抽水试验一般历时时间较长，加上区域自然水位变幅的影响，给群孔抽水试验资料的整理带来一定难度。以山西省晋城化肥厂巴公水源地群孔抽水试验为例，运用最小二乘法原理，推导拟合参数、水位预报公式，并根据水位自然变幅值对水位预报公式进行修正，编制计算程序，进行水位预报工作。     

绿色低碱混凝土膨胀剂的试验研究

采用多种工业废渣研制混凝土膨胀剂，具有节能利废的绿色效应，该系列混凝土膨胀剂碱含量低，储存期长，坍落度损失小，适合于泵送混凝土施工，且经济效益较好。     

干粉灭火装置的设计思考

通过对干粉灭火装置中的干粉流量、软管长度和直径、气压、灭火持续时间等诸参数进行分析和讨论,为干粉灭火装置的设计、制造提供理论依据.     

萘系高效减水剂的合成

萘系高效减水剂是一种用途较广性能优越的高效减水剂。探讨了它的合成方法、反应控制因素、成品对混凝土性能的影响。     

Some of the properties of wood–plastic composites

In this study some of the important properties of experimentally manufactured wood–plastic composites (WPC) were determined. Specimen having 60% and 80% particle and fiber of radiata pine (Pinus radiata ) were mixed with polypropylene (plastic) and four different additives, namely Structor TR 016 which is coupling agent, CIBA anti-microbial agent (IRGAGUARD F3510) as fungicide, CIBA UV filter coating (TINUVIN 123S), CIBA blue pigment (Irgalite), and their combinations. Based on the initial finding of this work static bending properties of the samples enhanced as above chemicals were added into both particle and fiber-based specimens. Thickness swelling of the samples were also improved with having additives in the panels. Micrographs taken on scanning electron microscope (SEM) revealed that coupling agent and pigment resulted in more homogeneous mixture of wood and plastic together. Two surface roughness parameters average roughness (R_a) and maximum roughness (R_max) used to evaluate surface characteristics of the samples showed that particle based samples had rougher surface characteristics than those of fiber based ones. No significant influence of chemicals added in the samples was found on surface roughness values of the samples manufactured from particle and fiber of radiata pine.     

水下高速运动不完整壳体屈曲可靠性分析

针对有初始缺陷的水下高速运动圆锥壳体的屈曲问题,建立了简化的力学模型。通过推导得出了理想情况下的水下高速运动圆锥壳体的屈曲载荷;并在此基础上确定了有初始缺陷情况下的屈曲载荷及其与初始缺陷之间的关系,从而建立了结构的安全余量方程,得到了结构的可靠性指标及失效概率。通过算例表明初始缺陷对结构的失效概率有明显的影响,因此,本文的分析具有一定的意义。     

谈某工程土壤源热泵地下管路系统施工要点

简述了土壤源热泵系统的概念,结合具体工程实例,详细介绍了土壤源地源热泵地下管路系统在各个施工环节中应注意的施工技术及质量控制要点,以供类似工程参考借鉴。     

气举反循环钻进工艺在地热深井施工中的应用

结合工程实例,对气举反循环钻进工艺进行了介绍,描述了该工艺所用的设备与参数选取方法,并对其在地热深井施工中的应用效果进行了分析,总结了施工中出现的问题与解决策略,以更好的满足地热井的施工要求。     

中深孔爆破技术在岩巷快速掘进中的应用研究

针对岩巷掘进速度慢、工效低的问题,通过优化掘进工艺、合理的组织劳动形式、中深孔爆破技术等的综合应用,提高了岩巷掘进速度,实践证明,改进后的工艺和设计,使每月掘进推进距离由原来的60 m~70 m增加至100 m以上,初步实现了岩巷高效安全掘进。     

浇筑水泥膨胀剂的研制

通过特别工艺,研制出C aO为主要成分的膨胀剂,用于浇筑水泥时其掺入量以3%为宜,研制的浇筑水泥,具有微膨胀性能。