本隧道進、出口均處于淺埋地段，進口進洞為Ⅲ類圍巖，采用Ⅱ式Ⅲ類明洞襯砌。隧道出口圍巖破碎、淺埋，采用Ⅳ式Ⅲ類明洞襯砌。整條隧道普遍埋深較淺，且離既有線很近（最近處只有20m），施工中會互相影響。隧道巖性為灰或深灰色石灰?guī)r。但根據(jù)設(shè)計圖樣，隧道的埋深及多處斷層的出現(xiàn)，隧道會受地表水影響較大，巖溶發(fā)育。因此施工中要做好防排水及處理溶洞的準備。本隧道根據(jù)圍巖地質(zhì)狀況的不同，分別設(shè)計成整體式襯砌和減薄式襯砌兩種式，其中包括DⅡK199＋800～890 錨段和DⅡK201＋050～070 段的特殊襯砌。除DⅡK201＋070～770 段采用C20 耐腐蝕混凝土外，均采用普通混凝土。
目錄
第一章 總體概況說明 ················································································· 1
一、編制依據(jù)····························································································· 1
二、工程簡介····························································································· 1
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一、質(zhì)量保證措施··················································································· 38
二、工期保證措施··················································································· 55
三、安全保證措施··················································································· 59
四、環(huán)境保護措施··················································································· 67
