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电化学综合试验法测定钢筋阻锈剂的防锈性能中的问题与改良方法探讨
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作者 钟雪华 《珠江水运》 2022年第1期108-109,共2页
在评估金属阻锈特性的许多方法中,金属电化学综合实验法是最基础且最普遍的方法之一。本篇文章重点结合具体的实验的改良过程,阐述了JTS 153-2015《水运工程结构耐久性设计标准》中,关于钢筋混凝土阻锈剂的电物理化学及综合防腐特性等... 在评估金属阻锈特性的许多方法中,金属电化学综合实验法是最基础且最普遍的方法之一。本篇文章重点结合具体的实验的改良过程,阐述了JTS 153-2015《水运工程结构耐久性设计标准》中,关于钢筋混凝土阻锈剂的电物理化学及综合防腐特性等实验方法中不进行具体说明的实验步骤以及实际中难解决的操作难点,提出了对钢筋阻锈剂电化学综合性能检测技术的一些方法改良的建议,仅供参考。 展开更多
关键词 钢筋阻锈剂 电化学综合试验法 防锈性能
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综合压水试验法在某地下水封洞库工程地质勘察中的应用
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作者 董堃 《工程技术研究》 2022年第20期71-73,共3页
地下水封洞库是指在天然完好坚硬的岩体下以工程掘进的方式形成的石洞工程,但以往传统地质勘查试验由于方法过于单一,难以预估真实的岩体深度、渗透性,因此实际工程结束后,岩体缝隙间的水压流速无法形成储油洞库理想的“P—Q曲线”条件... 地下水封洞库是指在天然完好坚硬的岩体下以工程掘进的方式形成的石洞工程,但以往传统地质勘查试验由于方法过于单一,难以预估真实的岩体深度、渗透性,因此实际工程结束后,岩体缝隙间的水压流速无法形成储油洞库理想的“P—Q曲线”条件,严重影响了地下水封洞库的工程质量。基于此,文章以某地下水封洞库工程地质勘察的技术方案为例,结合此工程地质勘查设备条件,对一种综合压水试验法进行分析,具体阐述了吕荣试验法、降水头试验法、脉冲试验法、干扰试验法的技术流程和作用原理。 展开更多
关键词 地下水封洞库 工程地质勘查 综合压水试验
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复杂岩基上重力坝坝基稳定地质力学模型试验研究 被引量:7
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作者 张林 杨宝全 +1 位作者 丁泽霖 胡成秋 《水力发电》 北大核心 2009年第5期39-42,共4页
建在复杂地质条件上的重力坝,坝基中往往存在多种软弱结构面。为了在物理模型试验中考虑软弱结构面的强度弱化对坝基稳定的影响,采用地质力学模型试验方法对武都碾压混凝土重力坝坝基稳定性进行研究。试验中采用变温相似材料模拟坝基中... 建在复杂地质条件上的重力坝,坝基中往往存在多种软弱结构面。为了在物理模型试验中考虑软弱结构面的强度弱化对坝基稳定的影响,采用地质力学模型试验方法对武都碾压混凝土重力坝坝基稳定性进行研究。试验中采用变温相似材料模拟坝基中软弱结构面的力学参数及弱化行为,在同一模型上进行超载和降强相结合的综合试验,获得了坝基失稳的破坏过程、变形分布特点及破坏形态,并得到评价工程安全性的综合安全系数,为工程的设计与施工提供了科学依据。 展开更多
关键词 坝基稳定 软弱结构面 强度弱化 变温相似材料 综合试验法 武都碾压混凝土重力坝
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Test evaluation for vertical fracture wells in low permeability reservoir
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作者 CUI Li-ping HE Shun-li 《Journal of Energy and Power Engineering》 2009年第9期32-35,共4页
As flow environment is poor in low permeability reservoirs, wells are always fractured in order to gain better economic benefits. Well testing analysis is very necessary for fracturing wells. However, available test a... As flow environment is poor in low permeability reservoirs, wells are always fractured in order to gain better economic benefits. Well testing analysis is very necessary for fracturing wells. However, available test analysis methods are of slow fitting speed and low fitting precision. In this paper, we first use a comprehensive evaluation method of analytical well testing, numerical well testing and well testing design. Many dynamic parameters such as fracture length, fracture conductivity, skin factor, etc are obtained. An example to illustrate accurate results of this method is given. 展开更多
关键词 test evaluation fracture wells low permeability reservoir fracturing effect
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Effect of a Traditional Chinese Medicine combined therapy on adolescent idiopathic scoliosis:a randomized controlled trial 被引量:9
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作者 Wei Hui Xu Jinyuan +9 位作者 Jiang Zhong Ye Shuliang Song Hongquan Ning Xitao Huang Huanmin Chen Wei Pei Jianwei Jiang Nengyi Chen Shao Du Honggen 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2015年第5期514-519,共6页
OBJECTIVE:To evaluate the effectiveness of a combined Traditional Chinese Medicine(TCM) therapy versus conventional treatment on adolescent idiopathic scoliosis.METHODS:One hundred twenty outpatients with mild and mod... OBJECTIVE:To evaluate the effectiveness of a combined Traditional Chinese Medicine(TCM) therapy versus conventional treatment on adolescent idiopathic scoliosis.METHODS:One hundred twenty outpatients with mild and moderate adolescent idiopathic scoliosis were randomly divided into a TCM group(TCMG)and a brace group(CG).TCMG patients underwent Daoyin,Tuina,and acupotomology therapies.CG patients were treated with a Milwaukee brace.Each patient's Cobb angle was measured after 12 and 24 months of treatment,and pulmonary function was determined after 12 months of treatment.Average electromyogram(AEMG) ratio of the surface electromyogram was measured after 6 and 12 months of treatment and followed-up after 18 and 24 months.RESULTS:The Cobb angle significantly decreased in both groups after 12 months of treatment compared with before treatment(P< 0.05).The percentages of original Cobb angle in TCMG and CG were51.4%and 47.8%(P > 0.05) after 12 months and62.5%and 34.7%(P < 0.05) after 24 months,respectively.Pulmonary function significantly improved after 12 months in TCMG(P < 0.05) but significantly decreased in CG(P < 0.05).The AEMG ratio was significantly lower(P < 0.01) and tended to remain at1 after stopping treatment in TCMG,but increased in CG(P<0.05).CONCLUSION:TCM combined therapy can prevent the progression of scoliosis.The AEMG ratio is a promising index that could replace radiography in the evaluation of treatment effect and progression in scoliosis. 展开更多
关键词 Medicine Chinese traditional Scoliosis Adolescent Electromyography Treatment outcome Respiratory function tests Randomized controlled trial
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