In view of the problems of the environmental deterioration and desertification after mining,the controversy to adopt whether sloping clices mining or top-coal caving mining is discussed.
鉴于目前陕北榆神矿区开采引起的生态环境恶化、荒(沙)漠化扩展问题,针对榆树湾煤矿首采面采用倾斜分层开采和放顶煤开采两方案的争论,设计了该两种开采方法的模拟实验,通过实验分析模拟开采实验现象,得出了陕北沙土基型覆盖层在不同的采高下“三带”的分布规律以及土层中裂隙发育规律。
Settlement and inclination observation of multiple-storys and high-storys building;
多高层建筑物沉降及倾斜观测
In this article,the cause of the inclination of the floating disk was analyzed,and the repair method and procedure were introduced.
阐述50000m3原油罐浮盘倾斜的原因,介绍了对50000m3原油罐进行修复的方法及修复过程。
Optimization of mining method for inclined and extra narrow gold ore vein;
关于倾斜极薄岩金矿脉采矿方法的优化
The condensation heat transfer in the inclined reflux condensers at various inclinations was investigated.
模型的计算值和实验值吻合较好 ,实验数据和理论计算都表明 ,倾斜式回流冷凝器中冷凝传热系数随倾斜度变化 ,在倾角大约为10°时达到最大
Analysis on the tilt reasons of one building and it s strengthen management;
某建筑物倾斜原因分析及加固处理
A Study on the Primary Aberration Theory of Decentered and Tilted Optical System;
偏心和倾斜光学系统初级象差理论的研究
Decentration and tilt of foldable intraocular lenses in the lens capsule;
折叠式人工晶状体囊袋内植入后偏心与倾斜的临床研究
Analysis and treatment on lean,rupture and of-position of PHC pipe pile;
PHC管桩倾斜、断桩以及偏位的分析和处理
Study of Deformation Analysis and Deformation Control for the Treatment of Lean-caused Disaster in Frame Structure;
框架结构倾斜病害治理中的变形分析及控制研究
The pipe lean will bring negative effects to evaluate the quality of piles in cross-hole sonic logging.
在声波透射法测桩中,声测管倾斜将严重影响检测结果,平测法不能直接判别声测管倾斜与否。
This paper analysed the failure reasons that caused cracks of the wall and the tilting teaching building with the engineering practice of a middle school,introduced the reasonable measurement of the failures.
结合工程实例,分析了某中学教学楼墙体开裂和整体倾斜的事故原因,并对工程事故进行了合理处理。
Engineering geological condition,footing,weak underlying layer examination,allowable bearing capacity of compound subsoil,earthquake hazard evaluation,settlement,tilting,excavation and dewatering works for the 3 tall buildings in Xinhejiayuan Community are introduced.
介绍了信合嘉园小区所建3栋高层住宅楼的工程地质条件、基础方案、软弱下卧层验算、复合地基承载力验算、地震液化检验、沉降量与倾斜验算、基坑开挖和基坑降水方案。
According to the structural feature of modern tilting levels, the method of erecting the collimation axis to the standing axis and the principle of the setting out of slope with the tilting standing axis are expounded.
根据现代微倾水准仪的视准轴可以调整的构造特点 ,阐述了使水准仪视准轴垂直于竖轴的方法 ,以及倾斜竖轴法放样斜坡面的原理 ;讨论了其误差来源、大小 ;对照几个行业的设计、施工及验收规范和测量规范 ,给出了简便可行的操作方法与有效检验手段。