铁矿岩心高光谱编录初探

对河北省昌黎县闫庄铁矿床的磁铁石英岩型铁矿石样品进行了光谱反射率测量,并与其铁含量进行了相关关系研究,研究结果表明,铁矿石中铁含量与850～900 nm的反射率均值呈现显著指数负相关关系,并从光谱编录入手,绘制了闫庄铁矿1个钻孔部分样品的光谱曲线与光谱彩色条码柱状图,与地质柱状图合并生成简单的光谱地质柱状图;研究证明,用岩心光谱反射率值去定量估算其铁品位是可行的,根据光谱曲线生成简单的彩色地质光谱柱状图非常有效,具有推广前景.     

MK—2型全液压坑道钻机

ＭＫ—２型全液压坑道钻机为一种轻便的井下浅孔钻凿设备,是吸取国外先进钻机优点并结合国内实际情况研制而成的,主要用于井下瓦斯抽放、超前探测及煤体注水的施工作业。本文介绍了该钻机的结构、技术参数和工业性试验情况。     

深井中钻铤螺纹联接的强度研究

改进了文献（１）中的理论模型并利用一种修正的弹簧模型,通过对石油钻柱接头螺纹的受力分析,分别建立了上扣扭矩、轴向外载作用下螺纹载荷分布的计算模型详细分析了螺纹载荷分布规律,指出了螺纹锥度,不同润滑脂的润滑所产生的摩擦系数,螺纹牙的弹性系数对螺纹联接的载荷分布规律的影响关系,给出了改善接头受力状态,减小应力集中的主要措施。还通过一种简单的力学模型得到了螺纹联接的极限轴向外载。     

科学钻探钻柱检测技术方案初探

对我国科学钻探的钻柱检测技术进行了初步的研究,主要包括钻柱检测参数确定,检测的选择及钻柱检测初步方案设计等。为进一步研究和实施科学深钻钻柱损伤状况监测提供前期的技术准备。     

CZ—22型钢绳冲击式钻机改型探讨

本文了ＣＺ－２２型钢绳冲击式钻机改进的必要性及其在施工中出现的主要问题和原因分析、改型方案的确定和论证，ＣＺ－２２型与ＣＺ－２２Ａ型钻机的主要区别，改型机方案的实施、效果评价和论证。     

钻杆接头表面高功率CO_2激光硬化行为的研究

利用正交试验法研究了高功率ＣＯ２激光工艺参数对钻杆接头表面硬化效果的影响，利用显微硬度计测定了硬化层硬度的分布规律及组织特征，采用计算机回归处理分析得出了Ｐ、Ｄ、Ｖ、Ｅ对硬化层面积大小因子ｈ·ｂ影响的表达式。研究结果为高功率ＣＯ２激光强化钻杆接头提供了一定的依据     

钻孔灌注桩水下灌注时砼在环空中流动阻力计算方法的探讨

本文拟应用流体力学和砼的流变特性的原理，从理论上探讨砼在环空中流动阻力的计算方法。     

地质钻机交流变频调速系统驱动性能的实验研究

在模拟回转和提升负载条件下，对异步电机和变频器组成的驱动系统在地质钻机上的适应性作了比较全面系统地实验研究。实验结果表明：交流变频驱动系统其调速范围宽，驱动特性好，可实现带载频繁启动；具有限定最大输出转矩、设定加减速时间等多项可选择的功能。系统运行可靠、效率高。在钻机上使用，可简化钻机传动机构，利于优化钻井和安全钻井；便于实现钻探设备的自动化。因此，交通变频驱动在钻机上有很好的应用前提，是一项值得     

A comparison of rock mass disturbance in TBM and drill and blast drivages at the Donkin Mine,Nova Scotia

Summary The initial phase of the Donkin-Morien project involves the driving of two parallel tunnels through an interbedded sequence of coal measures strata to intersect the Harbour Seam which lies approximately 3.5 km offshore. The No. 2 tunnel was driven a total distance of 3579 m using a 7.6 m diameter full face shielded Lovat TBM and supported by steel ring beams. The No. 3 tunnel was initially driven a distance of 1027 m using conventional drill and blast methods (7.6 m wide by 5.3 m high with a uniradial arch and supported by rock bolts and shotcrete). The TBM was subsequently used to complete the drivage of the No. 3 tunnel to the Harbour Seam.Both the No. 2 and No. 3 tunnels followed a thick sandstone unit at a grade of –20% for the first 900 m. This provided an opportunity to compare the rock mass disturbance resulting from two different excavation methods. A programme of field and laboratory measurements was therefore undertaken, which included: the use of a borehole dilatometer to determinein situ rock modulus,in situ gas permeability testing, seismic reflection surveys on the tunnel walls, and the laboratory testing of core samples.The paper examines the four different techniques used and compares the results obtained.     

The movement age of hidden fault and analysis on width of its effect zone from shallow seismic sounding and drilling data

Field experimental seismic sounding permitted us to obtain optimal shallow seismic reflection sounding parameters. In process of data processing, we obtained a high-qualitative shallow seismic reflection sounding profile by using the techniques such as filtering, edition surgical blanking, prediction deconvolution, fitting static correlation of first arrival time, and velocity analysis. Comprehensive analysis on the information of reflection wave groups along the seismic sounding profile and the stratigraphic and neogeochronological data obtained from many drills near the sounding line reveals that the upper termination of the detected fault zone is located at depth of 75–80 m, in the Middle Pleistocene deposits dated to be about 220 ka BP. The continuity, discontinuity, increasing and decreasing amount of reflection wave groups and change of their configurations, in combination with geological columns of drills, permitted us to know that the width of upper termination of the fault zone is 100 m. It can be inferred from the variation of number of reflection wave groups along the profile that the scarp of hidden fault is 200 m wide and the fault is a synsedimentary active fault in the Early Pleistocene and the early stage of Middle Pleistocene. No tectonic movement, which offset the covering deposits, had occurred since the late stage of Middle Pleistocene. Foundation item: A High-new Technique Project by State Development and Planning Commission of China (2001977).