Climb a Hill

<正>This Saturday,I am going to climb a hill with my classmates.What should I wear?I am thinking about it.I can wear my jeans and trainers because they are fit for climbing a hill.It will be hot in the afternoon that day,so I want to wear a silk shirt.And it will be cool in the morning,so I am going to take my jacket with me.It can make me feel warm.I will enjoy myself in the mountain.     

The Amazing Summer

<正>Last summer,my friend asked me to go to his hometown to spend the summer vacation.I asked my parents for permission and they said yes.When I got to my friend’s place,I was so surprised because there was a beach near his house.It was so beautiful,and many kids played there.The water was so blue under the sunshine.It was fun to swim in the sea.In the morning,I woke up early and took a walk along the beach,and I could hear     

My Dream

<正>My name is Wei Qiuyue. I study in a middle school. Everybody has his own dream, and my dream is to be a doctor. Because doctors can save the patients, and doctors can reduce pain for patients. But I am a student now. I have to study hard. I am going to the college. I want to go abroad to study, so I can visit foreign countries and learn more knowledge. That is a very     

Sports and Health

<正>In the past,I hated exercise.My mother often advised me doing~(1)some sports.But I didn't accept her advice.I thought it tiring to do sports every day and it was very difficult for me to do some sports.So I was very weak and I often got ill.I also got fatter and fatter.I wanted to improve the situation.So I tried to do sports every day.It often took me one and a half hours to do sports every day.Now I love sports very much and I am very strong.I seldom catch a cold but~(2)I am not fat any more.I am also much strong~(3)."Life lies in movement." I hope everyone can learn from me.Do exercise every day.I believe everyone can be stronger and stronger.     

长江小南海水利枢纽坝基弱风化岩体 工程力学性质研究及可利用探讨

 小南海水利枢纽为长江上第三座大I型水电工程,坝基为典型的红层软岩,岩体风化层次分明。坝基覆盖层及强弱风化带平均厚约18 m,其中弱风化带平均厚约6 m,若全部挖除,相当于总开挖深度的1/3,开挖工程量巨大。从坝区大范围岩体波速的分布、工程岩体质量分级、岩体变形特性及强度特性等方面对比研究弱风化岩体与微风化岩体的差别,探讨弱风化岩体作为建基面的可能性。本阶段的试验研究结果说明,弱风化与微风化岩体均为IV级,弱风化岩体的岩石力学参数与微风化岩体差别不大,具备作为建基面的工程力学条件。     

Be a Volunteer

<正>I’m writing to recommend myself as a volunteer for"Help You Know More about Lianyungang".I’m a student in Class 1,Grade 7.I like English and I’m good at it.I am also good at sports.I am good with my classmates and teachers.I have plenty of free time after school.I also know Lianyungang well.I’d like to be a volunteer because it’s a good chance for me to help others.I can help the tourists     

经验强度准则在岩体破坏中的应用

著名的Hoek-Brown强度准则,不仅反映了岩体的固有特点和非线性破坏特征,而且弥补了Mohr-Coulomb强度准则的不足,在提出的20年中已得到广泛应用。本文以两者之间的对比为主线,介绍狭义和广义Hoek-Brown经验强度准则,得出经验强度理论在岩体低应力区、拉应力区和非线性破坏等方面的诸多优势,只要成功解决经验参数取值的精确性,它在有关领域可能平行甚至取代Mohr-Coulomb强度准则,是一种很有应用前景的分析理论。     

Techniques d'études en laboratoire de l'étanchéité physicomécanique des massifs rocheux

The storage of toxic wastes in rock caverns implies numerous and extensive in-situ investigations. It is illustrated here that in a preliminary stage, pertinent data can be obtained with laboratory testing on rock core samples: two aspects are considered here: firstly, it is concerned by the modifications of chemistry of distilled or sea water during a percolating test by radial divergent flow in a gneiss sample. Secondly, laboratory test are described which can be applied to assess the efficiency of cement based grouts in fissured rocks.     

General report,session I: Engineering properties of carbonate rocks

After reviewing the geological classification of carbonate rocks, a method of describing carbonate rocks for engineering purposes is developed following the recommendations set out by the I.A.E.G. Mapping Commission. Particular attention is paid to the details of the weathering profile developed on carbonate rocks. The engineering classification of carbonate rocks is based on both the engineering behaviour of the rock as a material and in the mass. Physical properties, including strength and deformation characteristics, are used to determine a modulus ratio for a wide range of limestones including the English chalk. In addition to rock material properties, and engineering classification of the rock mass has to take account of structure, discontinuities, and details of the weathering profile. Assessment of rock mass properties requiresin situ testing to determine deformation characteristics. If the usually limited amount of data on such quantitativein situ properties is related to other measures of rock quality, then engineering geological mapping can be used to extend the applicability of the limitedin situ data to a whole site. RQD has been related to the compressibility of the rock mass, and a rock mass factor has been proposed that links the deformability of the rock material to that of the rock mass. Rock mass classifications for large underground openings may be used with limestones. Engineering problems associated with carbonate rocks are briefly reviewed, as are the properties of limestones as a building stone and as aggregate.     

一般自由面上多面节理生成、节理块切割与关键块搜寻方法

首先介绍传统的块体理论近来的发展、应用与局限。块体理论限于研究岩石开挖表面上的可移动块体。采用切割法找到所有组成岩体的任何块体，基于裂隙的平均长度与平均间距，引进产生三维裂隙多边形的统计方法。基于裂隙多边形，介绍切割三维块体的一般方法。给定一个移动方向，提出搜索关键块体的一般方法。岩体的边界可以是任何自然岩石边坡与人工开挖的任何岩体表面。该方法适用于统计产生的分组裂隙与人工输入的个体裂隙，所引进的方法属于三维非连续变形分析的切割程序DC的应用。