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新浪微博 @努力hard 微信公众号 HardPPT 演界网店铺 HardPPT 骚一骚 更精彩 Rock Mass Classification UNIT 10 Rock Mass Classification Urban Underground Space Engineering Hebei University of Engineering 南阳哪里有治疗白癜风的医院★郑州华柱白癜风医院是河南省新农合定点医疗机构,【微信号zzhznpx】咨询:0371QQ：851856908采用专利口服（2012102561459）专利外用（2012102561660）治疗白癜风，新农合报销【70%-30%】，地址：郑州市西大街一号(二七广场东行100米路北)。 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院http://0371/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳专业白癜风医院/ 南阳最专业的白癜风医院http://0371/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ 南阳最专业的白癜风医院/ New Words and Expressions 先 看 单 词 或 短 语 Refer to P92 Additions rockbolt steel sets civil engineering RQD heading / face NATM wire mesh shot crete parameter stress field span spall slab rock brust RMR blast bench What Why How Who 怎 么 阅 读 For Example ① [During the feasibility and preliminary design stages of a project, when very little detailed information on the rock mass and its stress and hydrologic characteristics is available], the use of a rock mass classification scheme can be of considerable benefit. ② At its simplest, this may involve using the classification scheme as a check-list to ensure that all relevant information has been considered. ③ At the other end of the spectrum, one or more rock mass classification scheme can be used to build up a picture of the composition and characteristics of a rock mass to provide initial estimates of support requirements, and to provide estimates of strength and deformation properties of the rock mass. ① It is important to understand that the use of a rock mass classification scheme does not ( and can not ) replace some of the more elaborate design procedures. However，② the use of these design procedures requires access to relatively detailed information on in situ stress， rock mass properties and planned excavation sequence， none of which may be available at an early stage in the project. ③ As this inf