利用免棱镜全站仪进行采矿空间体积测量

在有色采矿工程作业中,经常要测量采矿的体积,长时间的工作积累,前人总结出了许多测量方法,由于测量仪器设备的发展,特别是免棱镜全站仪的出现,能够更加方便地测量空间体积,本文用简洁的语言论述了用免棱镜全站仪进行采矿空间体积的测量方法,也对全站仪的功能应用作进一步的陈述,以便提高仪器的使用价值,给采矿生产作业带来方便。     

全站仪后方交会法在倾斜天溜井测量中的应用

矿井定向是矿井测量的重要组成部分。传统矿井定向方法包括1井定向、2井定向和陀螺定向。由于矿井本身的原因或由于仪器设备不足的原因,这些方法都有一定的局限性。在矿房法采矿工艺中,倾斜天溜井众多,联系测量任务繁重,为解决矿房法施工中联系测量的难题,探讨了全站仪后方交会法在倾斜天溜井中进行联系测量的可行性。     

新型测量仪器设备在金川矿山测量中的应用及前景

本论述了近十年来现代化大型测量仪器在金川的实践应用，介绍了陀螺经纬仪的定向方法，除传统的逆转点法和中天法外，特增加多点计时法以及陀螺经纬仪在矿井平面联系测量和井下全站仪导线中加测陀螺边等应用，介绍了全站仪的应用情况，利用这些仪器和综合测量程序，可使矿区控制测量、变形观测及矿井平面联系测量、井下导线敷设等作业工作快速而准确、安全且合理地运行，未来的测量将是包括GPS在内的多种仪器的联合使用。     

陀螺全站仪在立井联系测量中的应用

利用陀螺全站仪进行千米立井联系测量,克服了几何定向精度低、占用井筒时问长等缺点,提高了井下定向精度,为煤矿安全贯通提供了保证.     

全站仪在悬高测量中的应用及改进

从悬高测量的基本原理入手,结合全站仪在悬高测量实际工程应用中存在的问题,提出了三种改进方法:分别为双测站法悬高测量,对向观测法悬高测量,前方交会加地形图法测定悬高。其中前方交会加地形图法是矿山悬高测量实际工作中常采用的一种方法,在地形复杂,测量人员及棱镜很难到达相互交叉点的投影区域时,可以得到很好的应用,可资同行借鉴。     

免棱镜全站仪在井下测绘中的应用

免棱镜全站仪的出现是矿山测量应用的重大里程碑。他是对传统经纬仪、全站仪的技术改进和重大创新。无棱镜测距精度高,反应速度快,具有激光指向仪的功能,在贯通测量中能够直观的指导生产。它的出现为井下控制测量、井下施工放样,贯通测量,危险的采空区测量带来了曙光,极大地提高了测量工作的外业作业效率和生命安全保障。     

某煤矿矿山贯通测量优化分析

某煤矿在日常生产中曾多次发生矿车和皮带设备磨损严重、连接装置断裂等跑车事故,经事故分析后发现,该事故发生的主要原因为煤矿贯通测量工艺落后、工艺精度差。针对这一问题,提出采用陀螺定向、全站仪高程测量以及GNSS定位技术相结合的测量方法,以改进测量精度,并建立相应的GNSS地表控制网与高程控制网,对平面导线、高程测量以及陀螺定向进行工艺改进。经试验表明,优化测量工艺后,解决了贯通测量工艺及其精度问题,提高了该煤矿的生产效率。     

全站仪在矿山生产测量中的使用

在矿山生产过程中,经常使用全站仪进行测量工作。介绍了全站仪进行悬高测量、高程测量和放样测量的基本方法,以及运用全站仪进行矿山勘探网放样测量的方法。     

测绘新技术在矿山工程中的应用

随着社会发展以及通讯技术、光电技术、计算机技术等高科技的普及,测绘新技术也在不断的发展中。本文介绍了一种不需要使用棱镜的全站仪测距装置和一种测量计算成图软件,能够极大的提高工作效率,在矿山施工测量中具有广阔的应用前景。     

陀螺全站仪在阿尔哈达矿业公司副斜井贯通测量中的应用

在矿山贯通测量中使用的陀螺全站仪很好的结合了陀螺仪和全站仪。陀螺全站仪不存在时间方面的限制、也不会受到环境方面的限制,与此同时,观测也非常的简单且方便,还存在非常高的贯通测量效率,因此,贯通测量这种定向仪器非常先进有效。本次研究结合实际使用情况,分析在矿山贯通测量中如何正确的使用陀螺全站仪,探讨提升定向精度以及改善工作效率的有效措施。为了实现误差的深入直观的分析,本次研究选择拓普康陀螺仪全站仪为案例,对陀螺全站仪在矿山贯通测量中的应用进行深入的分析。     

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)     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.