价值工程
價值工程
개치공정
VALUE ENGINEERING
2013年
26期
115-116,117
,共3页
地下洞室%开挖支护施工%围岩变形%原型监测%应用
地下洞室%開挖支護施工%圍巖變形%原型鑑測%應用
지하동실%개알지호시공%위암변형%원형감측%응용
underground cavern%excavation and support construction%rock deformation%prototype monitoring%application
雅砻江官地水电站引水发电系统工程处于高地应力区，最大主应力量值达39.63MPa，部分洞室断层、错动带分布较多，缓倾错动带与高倾度裂隙相互切割，使得洞室开挖支护难度加大，合理选择开挖支护参数就显得尤为重要。本工程根据地质特性，各洞室的分布特点及洞室结构利用原型监测手段对洞室开挖支护过程中以及开挖后岩体的应力应变变化情况进行监控。针对异常情况，通过对监测数据的分析，合理调整开挖爆破参数，调整或优化支护参数，对工程的施工过程和运行进行预警与监控，保证工程施工的安全、顺利进行。
雅礱江官地水電站引水髮電繫統工程處于高地應力區，最大主應力量值達39.63MPa，部分洞室斷層、錯動帶分佈較多，緩傾錯動帶與高傾度裂隙相互切割，使得洞室開挖支護難度加大，閤理選擇開挖支護參數就顯得尤為重要。本工程根據地質特性，各洞室的分佈特點及洞室結構利用原型鑑測手段對洞室開挖支護過程中以及開挖後巖體的應力應變變化情況進行鑑控。針對異常情況，通過對鑑測數據的分析，閤理調整開挖爆破參數，調整或優化支護參數，對工程的施工過程和運行進行預警與鑑控，保證工程施工的安全、順利進行。
아롱강관지수전참인수발전계통공정처우고지응력구，최대주응역량치체39.63MPa，부분동실단층、착동대분포교다，완경착동대여고경도렬극상호절할，사득동실개알지호난도가대，합리선택개알지호삼수취현득우위중요。본공정근거지질특성，각동실적분포특점급동실결구이용원형감측수단대동실개알지호과정중이급개알후암체적응력응변변화정황진행감공。침대이상정황，통과대감측수거적분석，합리조정개알폭파삼수，조정혹우화지호삼수，대공정적시공과정화운행진행예경여감공，보증공정시공적안전、순리진행。
Headrace system engineering of Yalong River Guandi Hydropower Station is located in high stress areas, the maximum value of the main forces achieves 39.63MPa, chasm and fault zone of part of the cavern is more, and dipping fault zone and high inclination fissure cut each other, so the cavern excavation and support become more difficult and it is particularly important to reasonably chose excavation and support parameters. According to the geological characteristics of the project, the distribution characteristics of each cavern and cavern structure, this paper used prototype monitoring means to monitor the excavation and support process and the changes in stress and strain after excavation. For unusual circumstances, through the analysis of monitoring data, it reasonably adjusted the excavation blasting parameters, adjusted or optimized support parameters, made early warning and monitoring of the project construction process and operation to ensure the safe and smooth construction.
