钻孔找矿技术在矿山工程地质钻探中的应用研究

为解决传统矿山工程地质钻探偏移系数高的问题,基于钻孔找矿技术设计矿山工程地质钻探方法。基于钻孔找矿技术,定位矿山工程地质钻探位置,计算矿山工程地质钻探降斜作用力,确定矿山工程地质钻探轨迹,选择矿山工程地质钻探冲洗液,实现矿山工程地质钻探。设计实例分析,结果表明,设计方法地质钻探偏移系数明显低于对照组,能够解决传统矿山工程地质钻探偏移系数高的问题。     

钻探技术在工程地质勘察中的应用研究

随着我国地质勘察的快速发展,钻探技术在地质勘查中得到广泛的应用。钻探技术对工程地质有准确的分析能力,逐渐成为检测地质结构的重要手段。本文对工程地质勘察简要概述,分析钻探技术在工程勘察中的应用。     

工程地质钻探中的钻孔技术探析

随着我国社会经济的飞速发展,各种建筑项目被开发建设,工程地质钻探对做好地质勘探工作具有重要意义其中钻孔技术是工程地质钻探中十分重要的技术之一,它通过钻孔来获得土样,进而样品分析来获取岩土层的各项物理、力学、化学等地质资料参数,让工作人员能够更好的掌握土地各类参数数据,并为地质勘探提供依据。本文通过对工程地质钻探技术进行概述,分析当前钻孔技术在各个领域中的应用情况和现状,提出工程地质钻探中钻孔技术应用的事项,以便为工程建设提供科学有效的参考建议。     

浅析工程地质勘察的技术与手段

近几年,国内经济建设发展到了新阶段,并且地质勘查的事业也获得迅速发展,在地质的勘查过程中,其勘查技术有着重要作用。尤其钻探技术逐渐受到地质勘查人员的重视,这种技术主要优势是分析能力比较准确,应用效果较为显著。本文着重分析了工程地质的勘查技术特点以及使用条件,深入研究工程地质的勘查技术,以为地质勘查提供参考。     

地质钻探用无缝钢管的发展趋势

一、钻探管的应用现况钻探工程是探明地下矿产资源和水文地质、工程地质情况的主要手段。钻探工程技术水平的高低,直接影响到能否多快好省地为我国社会主义建设提供矿产资源和地质情况。目前,我国钻探工程技术水平还比较低,与社会主义建设的需要不相适应。突出的问题是:随着矿产资源越来越向深部发展,钻孔深度日趋加深,而现用的DZ2～3号钢钻探管材,仅能适用1500米以内的中深钻孔;同时,     

资源勘探中地质岩心钻探技术的应用

针对资源勘探中地质岩心钻探技术的应用进行研究,介绍了我国地质岩心钻探技术的发展。同时探讨了我国当前应用的资源勘探中地质岩心主要钻探技术。结合这些内容,总结了资源勘探中,地质岩心钻探技术的应用,内容包括:绳索取心地质钻探技术的应用,连续反循环钻探技术的应用,钻探技术在我国公益项目中的应用。希望通过对这些内容的分析,能够为资源勘探中地质岩心钻探技术的应用提供一定帮助。     

水文地质调查科技发展与应用

水文地质调查与岩土工程地质调查是相辅相成的,是评价调查区岩土工程等级的重要指标。随着地球物理探测技术、遥感地质以及钻探技术的快速发展,在水文地质调查的应用越来越广泛,推动了水文地质调查科技的快速发展。在今后的发展过程中,水文地质调查内容逐渐趋于多元化,如水文地质调查在环境地质调查中的综合应用等。     

钻探技术在地质勘察工程中的应用探讨

随着我国经济的不断发展,我国的地质勘察事业得到了快速的发展,而在地质勘察的工程之中,钻探技术发挥的作用也越来越重要了,因为钻探技术具有非常准确的分析能力,因此它也成了地质勘察最为重要的手段。本文对工程勘察钻探工作进行了以下的分析,阐明了钻探技术在地质勘察工程之中的运用。     

工程地质施工钻探技术的应用分析

工程地质钻探是一种常见且很重要的工程地质勘查查方法,又是采取岩样土样及进行原位测试不可或缺的手段之一。钻探是勘查资料可信性和准确性的保证,特别是对于碎石土、砂土较厚地层及有特殊土地层中钻探更为重要。如果钻探技术不过关,便不能准确地揭露地层结构也不能获得岩土的客观物理力学参数,导致一些不真实的参数及资料出现在勘查报告上,影响了工程建设的质量,甚至可能产生上部拟建结构的安全隐患。基于此,文中笔者针对当前的钻探技术进行详细分析,旨在为钻探技术合理的选择提升作业效率而提供参考。     

钻探孔内事故及其处理浅议

钻探工程在地质勘探中发挥着非常重要的作用,但在钻探生产过程中,时常会出现一些孔内事故,对工程地质钻探工作的顺利开展造成很大影响,还造成巨大的经济损失。为此,结合实践,详细分析工程地质钻探过程中易发生的孔内事故,并针对这些事故提出有效的对策措施,并对一些应当注意的问题进行探讨,希望能够相关工作的开展提供一些参考价值。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.