国防交通工程与技术
國防交通工程與技術
국방교통공정여기술
TRAFFIC ENGINEERING AND TECHNOLOGY FOR NATIONAL DEFENCE
2011年
4期
17-18
,共2页
软岩隧道%突泥突水预报%拱顶沉降%监控量测
軟巖隧道%突泥突水預報%拱頂沉降%鑑控量測
연암수도%돌니돌수예보%공정침강%감공량측
soft-rocked tunnel%forecast of water and mud burst vault settlement lmonitor and survey
在隧道软弱岩层中存在具有一定压力的水体会使周边围岩产生变形,因此可通过监测临近掌子面的拱顶位移速率来推测前方是否可能发生突水突泥。具体过程为通过统计已有测量的拱顶下沉速率量与突水突泥的事件发生的相关度,得出一个阈值。然后,根据这个阈值来推测前方是否可能发生突泥突水。石林软岩隧道的应用实例说明此方法具体可行,为超前地质预报提供了一个新的途径。
在隧道軟弱巖層中存在具有一定壓力的水體會使週邊圍巖產生變形,因此可通過鑑測臨近掌子麵的拱頂位移速率來推測前方是否可能髮生突水突泥。具體過程為通過統計已有測量的拱頂下沉速率量與突水突泥的事件髮生的相關度,得齣一箇閾值。然後,根據這箇閾值來推測前方是否可能髮生突泥突水。石林軟巖隧道的應用實例說明此方法具體可行,為超前地質預報提供瞭一箇新的途徑。
재수도연약암층중존재구유일정압력적수체회사주변위암산생변형,인차가통과감측림근장자면적공정위이속솔래추측전방시부가능발생돌수돌니。구체과정위통과통계이유측량적공정하침속솔량여돌수돌니적사건발생적상관도,득출일개역치。연후,근거저개역치래추측전방시부가능발생돌니돌수。석림연암수도적응용실례설명차방법구체가행,위초전지질예보제공료일개신적도경。
In soft-rocked tunnels, water will build up pressure which may lead to the deformation of the surrounding rock of the tunnel, as a result of which the possibility of water and mud burst may be predicted by monitoring the displacement rate of the vault near the heading face. The detailed process includes two steps. First, we need to find the relevance of the subsiding rate of the measured vault to the chance of water and mud burst; then, we should figure out a threshold on the basis of which the pos- sibility of water and mud burst ahead may be made out. The practical application of the monitoring technique to the Shilin Tun- nel project proves the feasibility of the method,which provides a new approach for geological predictions.
