开采沉陷的地表移动规律初探

煤炭资源开采造成的地面沉陷是一种危害很大的地质灾害,不仅破坏耕地、损坏地面建筑物,严重影响着生态环境,已成为环境工程研究的重要课题之一。本文以某矿开采沉陷为例,利用微机进行数据处理、分析,在此基础上探讨了沉陷体的地表移动规律,对矿区开展防灾减灾工作具有积极的现实意义。     

Meteorological observations on Mount Everest in 2005

Mount Everest,the highest point on the Earth is often referred to as the earth's third pole as such the place is relatively inaccessible and little is known about its meteorology.In April 2005,an automatic weather station was installed at the mountain's North Col(6523 m a.s.l.).According to the observational 10-minute mean and daily records,the meteorological characteristics were analyzed. All the meteorological elements displayed obvious diurnal variations during May 1 to July 22,2005.The monthly variation of daily meteo- rological elements on Mount Everest coincided with that on Dingri,the closest routine meteorological station,with the high correlation co- efficients of 0.928,0.877,0.682,0.755,0.826 and 0.676(n=83,p<0.001)for mean temperature,minimum temperature,max- imum temperature,relative humidity,pressure and wind speed,respectively.Furthermore,the vertical mean gradient of temperature was above 0.6℃/100 m,especially for the daily maximum temperature.Most weather events on Mount Everest prominently appeared on the same day as those on Dingri,especially those from daily mean pressure,temperature and relative humidity with the cross-correlation coeffi- cients of 0.673,0.485 and 0.487(n=83,p<0.001),respectively.Some other weather events on Mount Everest lagged one-day be- hind those on Dingri.Furthermore,forecasting of the weather events on Mount Everest from pressure on Dingri was more reliable than those from the other meteorological elements.The conclusions are much important for research on meteorology and climate changes in the region.     

浅析某果汁厂成品罐沉降观测及加固方案

采用仪器设备对成品罐体进行沉降观测,并根据观测结果确定加固处理方案,为相关工程的检测加固提供一定的借鉴。     

区域观测与地理实在

讨论了地理研究中“观测”与“实在”的性质和联系，针对区域的性质提出了不同的观测方法。     

谈高层建筑的沉降观测

根据笔者在高层建筑施工过程中沉降观测的应用,对高层建筑施工过程中沉降观测的工作进行了论述。     

浅析物理实验中的误差

物理实验中有一些产生误差的因素是不可避免的，我们应对测量结果误差进行估计，并采取措施减小测量误差。     

相对论中物体运动的表观现象

阐明了相对论中“测量”与“观察”两个不同的概念，论述了高速运动秩本的视觉现象，从而澄清了洛仑慈收缩是一种观察效应的误解。     

天津市地面沉降灾害及防治对策

从自然与人文两个方面分析了天津市地面沉降的形成原因、发展过程和现状以及由此所能引发的各种灾害，结合实际提出了调整开采层位、严格控制地下水开采量；化害为利人工解决新水源；转变观念节约用水，大力发展节水型工业；寻找可靠的替代水源的防沉、控沉对策措施     

混凝土大坝多点温度分布式计算机监测

介绍大坝多点温度分布式测温系统的结构及工作原理，在基于ＰＣ计算机与单片机组成的分布式测温系统中，采用数字温度传感器，省去了传统测温电路中的放大电路和Ａ／Ｄ转换电路，给传统的电阻式测温技术带来一场极大的变革．