突泥突砂灾害，又称涌砂涌泥灾害。伴随矿井突水活动，大量泥砂涌入井巷所造成的灾害。泥砂主要来源于岩溶陷落柱、断裂破碎带、松散含水层。
岩溶山区隧道施工过程中，大型充水溶洞是造成隧道突水突泥事故的重要因素。
In the course of tunnel construction in karst mountain area, huge karst cave with water is the important factor for karst water and mud inrush disaster.
根据对岩溶隧道突水、突水机理的分析结果，提出了岩溶隧道突水突泥的防治原则。
On basis of the analysis result of the water burst mode and water burst mechanism of karst caves tunnel, the prevention and control principles for water gushing and mud gushing are put forward.
隧道位于岩溶地区，岩溶角砾岩、白云质灰岩在雨季施工时易产生坍塌、突水和突泥现象。
The tunnel site is located in Karstic area with limestones gravels, where is easy to cave in when construction in raining season.
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