#trs_autoadd_1221465166750 { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1221465166750 p { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1221465166750 td { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1221465166750 div { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1221465166750 li { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } /**---json-- {"":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"p":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"td":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"div":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"li":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"}} --**/

［摘要］简介云县新塘房电站缓倾角软岩段隧洞施工采用新奥法进行设计和施工的经验及体会

 

［关键词］新塘房 缓倾角软岩 新奥法 设计 施工

 

新塘房水电站位于临沧市云县幸福乡境内南淀河上，该电站属引水式电站，利用河床落差约60m，引水流量q=37.4m3/s，装机容量1.8万kw。有压引水隧洞布置于南淀河左岸，长约3.8km，隧洞为有压洞，设计过水流量为37.4m3/s,平均坡降为3/1000，隧洞进口底板高程为1097m，洞径4.2m。

 

一、隧洞地质概况

 

隧洞线路沿线主要为构造侵蚀深切中高山峡谷地貌，平均坡度大于25°。隧洞沿线穿越下古生界“澜沧群”（pz1ln）绢云石英片岩、绢云片岩、石英片岩夹炭质绢云片岩及绿色片岩、变质砂岩等，无可溶岩分布，岩体多呈薄层状或块状，片理、层理发育，其中绢云片