In tunnel construction of rich water karst area, the key technology to guarantee the tunnel construction security is to detect and forecast the geological situation in front of the tunnel face.

岩溶富水隧道施工中对隧道掌子面前方一定范围内的地质情况进行超前探测和预测预报是保证隧道施工安全的关键技术。

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It is difficult for mined tunnel with shallow cover to cross water-rich sand stratum.

穿越富水砂层一直是浅埋暗挖隧道的难点。

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The tunnel adverse geological faults include faultage, low strength, geological formation and development of loose, non-rock clay, high stress formation and water-rich strata.

隧洞不良地质段包括断层、低强度的软弱夹层、地质构造发育的结构松散地层、非岩性粘土、高地应力地层和富水地层等。

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Already in the planning stages: a 37-km tunnel to channel water from the Benus river in water-rich Pahang state to drought-stricken Selangor state, and a pipe to link the Gombak river in KL to the Wangsa Maju water treatment plant.

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