路基施工【案例1B411013】 1.背景 某高速公路M合同段(K17+300~K27+300),主要为路基土石方工程,本地区岩层构成为泥岩、砂岩互层,抗压强度20MPa左右,地表土覆盖层较薄。在招标文件中,工程量清单列有挖方2400000m3(土石比例为6:4),填方249000ma,填方路段填料由挖方路段调运。在填筑路堤时,施工单位采用土石混合分层铺筑,局部路段因地形复杂而采用竖向填筑法施工,并用平地机整平每一层,最大层厚40cm,填至接近路床底面标高时,改用土方填筑。 2.问题 (1)指出填统路堤施工方法存在的问题,并提出正确的施工方法。 (2)针对该路段选择的填料,在填筑时,对石块的最大粒径应有何要求?
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人为设立的一个项目是()
A. 官方储备
B. 特别提款权
C. 短期资本
D. 错误与遗漏
Your company has a main office and a branch office. The company has a single-domain Active Directory forest. The main office has two domain controllers named DC1 and DC2 that run Windows Server 2008 R2. The branch office has a Windows Server 2008 R2 read-only domain controller (RODC) named DC3. All domain controllers hold the DNS Server server role and are configured as Active Directory-integrated zones. The DNS zones only allow secure updates. You need to enable dynamic DNS updates on DC3. What should you do()
A. Run the Ntdsutil.exe DS Behavior commands on DC3.
B. Run the Dnscmd.exe /ZoneResetType command on DC3.
C. Reinstall Active Directory Domain Services on DC3 as a writable domain controller.
D. Create a custom application directory partition on DC1. Configure the partition to store Active Directory-integrated zones.
土质路堑混合挖掘法是指()混合使用.
A. 多层横向全宽挖掘法和分层纵挖法
B. 单层横向全宽挖掘法和分层纵挖法
C. 多层横向全宽挖掘法和通道纵挖法
D. 单层横向全宽挖掘法和分段纵挖法
对于原地基处理,下面哪个说法不正确().
A. 路基用地范围内的树木、灌木丛等均应在施工前砍伐或移植清理
B. 原地面的坑、洞、墓穴等应用原地土或砂性土回填
C. 当路堤填土高度小于路床厚度(80cm)时,路床压实度不宜小于基底压实度标准
D. 路堤原地基横坡陡于1:5时,原地基应挖成台阶