西藏甲玛超大型斑岩成矿系统找矿方向

甲玛矿床位于西藏冈底斯成矿带,其勘查和研究程度均较高,矿体由斑岩型矿体、矽卡岩型矿体、角岩型矿体及外围独立金矿体组成,具有多元矿体结构,其成矿元素为Cu、Mo、Pb、Zn、Au和Ag,呈现多金属成矿作用特征。矿区深部及外围的勘查找矿方向一直是地质学者们关注的热点。在斑岩成矿系统理论的指导下,近年来在甲玛矿区深部及外围取得了重大找矿突破。基于最新勘查成果,甲玛矿床共探获铜资源储量超过850×10⁴ t,钼资源量达91×10⁴ t,铅锌资源量超过150×10⁴ t,伴生金储量为220 t,伴生银储量超过1×10⁴ t,达到超大型矿床规模。为进一步指导区域及外围勘查找矿工作,以甲玛矿区最新勘查成果为基础,通过对矿区钻孔的详细编录,采用地表构造蚀变填图等方法,系统解剖了甲玛矿区不同矿段的矿体地质结构,并揭示了其矿床地质特征。结合甲玛矿区新发现的主矿段深部的厚大矽卡岩矿体和外围则古朗北矿段的巨厚斑岩型矿体,分析了矿区深部及外围找矿潜力,认为甲玛矿区深部仍存在厚大矽卡岩铜钼矿体和斑岩钼矿体,应进一步加强对外围则古朗北矿段新发现的斑岩矿体、矽卡岩矿体和角岩型矿体的勘查,建立新的资源储备。此外,归纳总结有效勘查找矿方法,以期为深入探究甲玛矿床成矿作用和创建综合勘查找矿模型提供参考依据,并通过系统梳理矿区已有勘查和研究资料,总结甲玛矿床的找矿标志,为区域类似矿床的地质勘查提供重要线索,也为青藏高原斑岩成矿系统的勘查和研究工作奠定坚实基础。     

不同尺度地质构造对露天矿边坡稳定性的影响——以北衙万硐山露采区为例

以云南北衙超大型金-多金属矿集区万硐山露采区为例，研究了不同尺度构造对露天矿边坡稳定性的影响，考虑不同尺度地质构造对边坡稳定性的综合影响，将露天矿边坡划分为四个工程地质分区，为边坡境界优化提供了可靠依据，对不同工程地质分区边坡分别提出了安全控制建议。研究成果可为地质构造复杂的露天矿边坡稳定性研究提供借鉴和参考。     

滇西马厂箐金多金属矿区水文及工程地质评价

马厂箐金多金属矿区位于滇西北丽江金及多金属成矿带中部,成矿地质条件优越。矿区地下水类型丰富,主要分为孔隙水、裂隙水及岩溶水3种类型,各类型地下水富水性差异大,以微硬水为主。地下水渗流作用对岩体物理力学性质及矿物组分改变较大,从而降低岩体质量和强度。工程地质条件受构造影响程度较深,致使岩体整体破碎,完整性较差;矿区工程地质岩组中以碳酸盐岩和碎裂岩为代表的较坚硬岩组和软弱岩组岩体物理力学性质最差,强度最低;以碎屑岩和岩浆岩为代表的坚硬岩组次之。综合评价矿区水文地质及工程地质,对矿山后续开发及安全生产具有重要的指导意义。     

金厂峪金矿南部岩体稳定性工程地质研究

针对金厂峪金矿南部采空区周围岩体稳定性问题，采用岩体力学与实际工程问题一体化的研究方法，在矿山岩体工程地质研究方面，主要研究矿区内岩体工程岩组、结构面、工程结构体、水文地质、构造等地质因素的分布特征和工程结构体的稳定性及其相关因素的联系。本研究成果为金厂峪金矿南部采空区处理方案提供了工程地质依据，保证了矿山的安全生产。     

西藏甲玛矿区钼成矿作用与找矿方向

用甲玛矿床成功的勘查经验指导矿区下一步工作以及区域拽矿.甲玛矿床经过详细的勘探与研究,已经成为冈底斯成矿带内最典型和最完整的斑岩型矿床系统.该系统包括了斑岩型钼矿体、夕卡岩型铜多金属矿体、角岩型钼(铜)矿体以及外围独立金矿体.文章以斑岩型钼矿、夕卡岩型钼矿以及角岩型钼矿为研究对象,进行了详细的地质特征描述.在地质研究的基础上,结合前人研究成果,对甲玛钼的来源及沉淀过程进行了倚要分析,并在此基础上提出了甲玛斑岩矿床系统模型.文章还提出了运用斑岩矿床系统模型开展矿区及区域找矿评价的建议.     

甘肃阳山金矿床工程地质特征

针对阳山矿区工程地质特征,探讨矿山开采时可能遇到的问题,从岩石工程地质岩组的划分、构造带工程地质特征及岩矿石顶底板稳定性等方面进行分析,并结合岩石物理力学性质测试结果,认为区内岩石工程地质岩组主要有松散软弱岩类、较软岩类、较硬岩类和坚硬块状岩类。矿体在形成过程中受构造带控制及影响,岩石较破碎,岩体稳固性大多较差,易发生不良工程地质问题,分析认为矿床开采技术条件属工程地质条件复杂类型。通过对矿区不同开采条件的分析,提出了开采中可能遇到的问题及初步解决的方法和建议。     

西藏甲玛铜多金属矿床角岩裂隙系统及成矿作用

角岩是甲玛矿床中新增的一种矿石类型,是主要的富矿围岩,具有面积大、厚度大、埋藏浅等特点。角岩中裂隙发育广泛,控制着岩体的矿化。角岩是岩浆侵位后期形成的热接触变质岩。在有流体加入的情况下,早期热液蚀变的角岩在受到高压岩浆作用易形成液压张性破裂。在裂隙形成的瞬间,含矿流体迅速进入张裂隙,导致温压的下降,从而降低金属硫化物的溶解度,形成金属沉淀。甲玛角岩裂隙中主要充填石英脉、硫化物脉和少量的碳酸盐脉。通过对充填在裂隙中脉体的形态特征和相互穿插关系的细致观察,再结合对脉体的矿物成分的分析及对脉体的受力分析,将角岩裂隙系统划分为四大期次。其中,Ⅱ、Ⅲ、Ⅳ期裂隙与矿化作用关系密切,Ⅳ期是最主要的成矿期次。     

木耳溪金属矿开采技术条件分析评价

为了矿山经济、合理及安全的开发利用,针对矿区开采技术条件问题,开展水工环地质测量,实施水文地质钻探、水文地质和工程地质编录、抽水试验及取样测试等工作手段,对矿区开采技术条件进行深入分析。调查矿区含水层、隔水层、构造破碎带、岩溶等水文地质特征;分析地表水、地下水的补给、运移、排泄等条件,分析充水水源、矿坑涌水通道等主要充水因素,评价了矿床充水条件;对矿山可供利用的水源水质条件、水量等进行了调查评价。通过分析研究,得出了矿山水文地质、工程地质及环境地质条件属中等类型,矿山开采技术条件属中等复杂类型的结论。     

湖北丰山铜矿露天采场扩境区边坡岩体工程地质特性研究

边坡岩体的工程地质特性对露天开采边坡角的选定及边坡的稳定性至关重要.本文通过对丰山铜矿露天采场扩境区内边坡岩体的构造、岩性、水文地质条件及存在的各种结构面特征进行了大量的调查和研究,为扩境区边坡稳定分析评价提供了可靠的地质资料.     

德兴铜矿富家坞矿区露采边坡稳定性分析

本文采取收集并分析资料、工程分析和现场工程地质调查等方法,从地层、岩性、构造等方面,对富家坞矿区露天采矿场边坡稳定性进行了定性分析、预测及稳定性分区,并提出工程建设及开采中应注意的问题。     

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.     

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.     

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)