新集二矿下夹片地层特征及在防水煤柱留设中的意义

针对新集二矿新生界松散层，推覆体下开采的特殊地质及水文地质条件，通过对夹片地层水文工程地质条件，边界条件及富水性特征的分析，阐明夹片地层在防水煤柱留设中的意义，并通过生产实践验证，取得了较好的经济及技术效益。     

低氟与大骨节病－－大骨节病防治拾趣四则

该文笔者多年研究大骨节病原始原因的一项新说。即病区外环境低氟。引起体内以低氟为中心的代谢紊乱，从而导致以骨骼系统为主的病变－大骨节病。防治该病，应向体外补氟。药疗这一进补方式故然必然，但最有效又生活化的办法是食疗。食疗又分氟盐防治和饮茶防治两种。而最适用且简便的方法是提倡患区人群适度饮茶，并且应从儿时做起。关于补氟和饮茶等防治大骨节病的实践，笔者已浓缩于下面四则拾趣之中……。     

浅谈野外岩心地质编录工作

岩心地质编录是收集和观察研究岩心中所赋存的各种地质信息和地质现象的一项重要的基础性地质工作。本文根据具体实践经验，简要介绍了岩心地质编录工作的3个阶段以及贯穿于编录工作始终的取样工作。     

Estimation of Hourly and Daily Global Solar Radiation at Clear Days Using an Approach Based on Modified Version of Gaussian Distribution

The performance of two models,Jam and Baig,based on the modified version of Gaussian distribution function in estimating the daily total of global solar radiation and its distribution through the hours of the day from sunrise to sunset al any clear day is evaluated with our own measured data in the period from June 1992 to May 1993 in Qena Egypt The results show a high relative deviation of calculated values from measured ones,especially for Jain model,in the most hours of the day,except for those near to local noon.This misfit behavior is quite obvious in the early morning and late afternoon A new approach has been proposed in this paper to estimate the daily and hourly global solar radiation This model performs with very high accuracy on the recorded data in our region.The validity of this approach was verified with new measurements in some clear days in June and August 1994.The resultant very low relative deviation of the calculated values of global solar radiation from the measured ones confirms the     

回归分析在震磁关系研究中的应用

通过相关分析北京、兰州、银川、红山地磁台地磁垂直分量Z(世界时13—14时)时均值资料(每两台相组合,以月为统计单位),得相关系数R和回归系数b。经统计检验,发现不同台站的R、b大小虽有差异,但正常情况下均在其置信区间变化(置信概率0.95)。几次中强震前,b、R大幅度下降,连续偏离其控制区间,至临震前1—2月或当月趋于恢复或完全恢复。对不同台组的垂直分量差ΔZ与时间作回归分析(ΔZ为时间t的函数),得不同台站的线性回归方程及相关系数R。正常情况下ΔZ在回归方程的置信区间变化(置信概率0.95),当地磁台附近孕育中强以上地震时,ΔZ明显偏离回归方程的控制区间。应用以上两种方法对80年代以来宁夏及其邻区的六次中强地震作了对应效果检验,并对发现的问题作了简略探讨。     

阿希金矿地质特征及成因初探

阿希金矿产于下石炭统大哈拉军山组,第五岩性段构成的古火山机构西南缘。矿体产出形态及空间分布,严格受近南北向弧形张扭性断裂控制。主矿体呈厚大似板状体,以南北两个富集中心向NE50°倾角侧伏。矿石以石英脉型为主,其次为蚀变岩型。围岩为英安岩和角砾熔岩。属中一低温火山期后热液型金矿床。     

A Statistical Model for Investigating Climatic Trend Turning Points

A two-phase trend model is presented to investigate the turning-point signals of evolution trend in long-term series of a climatic element. Based on nonlinear fitting, the revised model brings out more evident improvement of the linear model proposed by Solow et al. (1987). Both theoretical deduction and case calculation show that our version can search the turning point and period accurately and objectively. In particular it is fit for computer exploring the turning points in long-range records from stations covering a large area, thus avoiding subjective judgement by a usual drawing method.     

铁路工程地质的发展趋向

本文论述了铁路选线工程地质、铁路工程地质勘察、钻探工作、铁路地质灾害、巨型铁路桥梁及长大铁路隧道等方面工程地质研究所取得的进展及进一步研究的方向。