Estimate of Loading Rate for a TBM Machine Based on Measured Cutter Forces   总被引：1，自引：1，他引：1  

Z. X. Zhang 《Rock Mechanics and Rock Engineering》2004,37(3):239-248

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探矿工程(岩土钻掘工程)技术与可持续发展          下载免费PDF全文

张金昌 《探矿工程》2004,31(2):1-5

可持续发展是我们时代的主题，已被世界各国人民作为发展本国经济所追求的理想方式。作为国民经济建设先行官的地质工作组成部分的探矿工程(岩土钻掘工程)技术与可持续发展有密不可分的关系。针对我们所处的时代特征及人类生存发展的时代主题，面对国民经济建设新形势，简要阐述了探矿工程(岩土钻掘工程)技术与可持续发展的关系以及技术本身发展的有关问题。  相似文献   

TGQ系列勘察取样钻机(具)的研究          下载免费PDF全文

朱文鉴  张培丰  张建元 《探矿工程》2004,31(2):33-36

取样钻技术是区域地质填图、物化探取样、古地磁取样、地质灾害预警防治和工程勘察等必不可少的技术手段。TGQ系列勘察取样钻机包括TGQ-1、5、10三个型号，分析了其结构、特性和特点，以及配套钻具和取样器。  相似文献   

声波钻进技术的发展及其应用          下载免费PDF全文

吴光琳 《探矿工程》2004,31(3):39-41

声波钻进是在各种覆盖层中采集连续岩心样品的有效手段。叙述了声波钻进技术的发展情况、工作原理、设备操作、优越性和用途，并且对我国研发此项技术提出了建议。  相似文献   

一种利用测井资料预测岩石可钻性的计算机方法          下载免费PDF全文

夏宏南  杨明合  谭家虎  戴俊  王小建 《探矿工程》2004,31(1):47-49

介绍了一种利用测井资料快速求得岩石可钻性级值的计算机方法。该方法能够比较准确地预测岩石可钻性，快速做出连续的地层可钻性剖面图。室内微钻头可钻性试验和江汉油田现场应用验证表明：该系统具有比较高的可靠性，是可以投入油田现场应用的。  相似文献   

HJ-1复合型钻井液的研究及应用          下载免费PDF全文

王政敏  牛振中  颜志华 《探矿工程》2004,31(5):48-50

分析和探讨了HJ-1复合型钻井液对复杂地层护壁的作用机理及护壁性能试验情况，介绍了其在寨上矿区复杂地层钻探中的成功应用。  相似文献   

数字地质编录中坡面展示影像图的制作研究   总被引：2，自引：0，他引：2  

杨立君  李浩 《现代测绘》2004,27(6):33-35

基于影像的数字地质编录是摄影测量和工程地质学科边缘交叉发展的技术成果之一．目前仍处于研究阶段。介绍了影像数字地质编录中坡面展示影像图的制作原理及其流程，重点阐述了畸变校正后像片坡面影像几何纠正的两种不同的处理方法。实践表明，两种处理方法的结合能够很好地满足数字地质编录中对展示影像图的生成及使用的要求。  相似文献   

青西油田碳酸盐岩裂缝性储层地球物理预测技术的应用     

师永民撒利明  陈广城田鑫李虹  王斌婷 《应用地球物理》2005,2(2):119-126

白云岩成岩收缩晶间孔、洞、缝与构造网状缝相互沟通可以组成良好的油气储层，但是这种复杂裂缝—孔隙型储层分布随机性强、发育程度和差异性大，储层预测难度大。本文以中国西部酒泉盆地青西油田下白垩统下沟组湖相白云岩裂缝—孔隙型储层为例，提出地球物理综合预测碳酸盐岩裂缝的方法。本文描述了综合地球物理方法预测碳酸盐岩裂缝储层的实施和应用效果。  相似文献   

Signatures in flowing fluid electric conductivity logs   总被引：1，自引：0，他引：1  

Christine Doughty  Chin-Fu Tsang 《Journal of Hydrology》2005,310(1-4):157-180

Flowing fluid electric conductivity logging provides a means to determine hydrologic properties of fractures, fracture zones, or other permeable layers intersecting a borehole in saturated rock. The method involves analyzing the time-evolution of fluid electric conductivity (FEC) logs obtained while the well is being pumped and yields information on the location, hydraulic transmissivity, and salinity of permeable layers. The original analysis method was restricted to the case in which flows from the permeable layers or fractures were directed into the borehole (inflow). Recently, the method was adapted to permit treatment of both inflow and outflow, including analysis of natural regional flow in the permeable layer. A numerical model simulates flow and transport in the wellbore during flowing FEC logging, and fracture properties are determined by optimizing the match between simulation results and observed FEC logs. This can be a laborious trial-and-error procedure, especially when both inflow and outflow points are present. Improved analyses methods are needed. One possible tactic would be to develop an automated inverse method, but this paper takes a more elementary approach and focuses on identifying the signatures that various inflow and outflow features create in flowing FEC logs. The physical insight obtained provides a basis for more efficient analysis of these logs, both for the present trial and error approach and for a potential future automated inverse approach. Inflow points produce distinctive signatures in the FEC logs themselves, enabling the determination of location, inflow rate, and ion concentration. Identifying outflow locations and flow rates typically requires a more complicated integral method, which is also presented in this paper.  相似文献   

DEFORESTATION IN NORTHEAST THAILAND, 1975–91: RESULTS OF A GENERAL STATISTICAL MODEL     

Gadsaraporn Wannitikul 《Singapore journal of tropical geography》2005,26(1):102-118

Using a general statistical model, this study attempts to characterise the trend of deforestation in the northeast region (Isan) of Thailand between 1975 and 1991, a period when the kingdom had sustained high rates of economic growth and steady increases in population. Using data obtained directly from government bodies on the 17 provinces comprising this heavily deforested region, the study examines the correlations between forest area and a set of six variables: population density, agricultural area, real per capita income, accumulated irrigated area, agricultural credit levels, and distance from Bangkok, the national political and economic centre. It also considers the effect of the two logging bans instituted in 1979 and since 1989. The study found a negative correlation between forest area and population density in particular, followed in ranking by agricultural credit, per capita income, the logging bans and distance from Bangkok. Viewed together with more recent data showing that rates of deforestation in the kingdom as a whole have slowed and appear to be stabilising, these results also suggest the beginnings in the 1990s of a forest transition – from an industrial to a post‐industrial stage in forest utilisation – in Thailand.  相似文献