渝黔铁路天坪隧道有害气体预测预报方法
发布时间：2019-02-25 18:06
【摘要】：天坪隧道穿越含有害气体非煤地层,为解决采用大量地质钻探预报成本高且严重影响施工进度的问题,根据前期有害气体的出现位置以及岩层厚度、产状等信息,利用隧道与岩层走向间的已知条件,采用区域地层厚度和产状测量、隧道与岩层关系投影计算、斜井预报正洞等综合预报方法,计算出有害气体在某一岩层的赋存范围,进而推测出下一阶段有害气体在隧道内出现的位置,然后通过少量钻探进行验证,使超前地质钻孔更有针对性,可大大缩减钻孔数量,节约施工时间。天坪隧道采用该方法取得了较好的应用效果,能准确预测有害气体的位置,为提前进行设计优化和施工组织提供依据。
[Abstract]:Tianping Tunnel passes through non-coal strata containing harmful gases. In order to solve the problem of high cost of geological drilling prediction and serious influence on construction progress, according to the location of harmful gas in the early stage, the thickness and occurrence of strata, and so on, Based on the known conditions between tunnel and rock strike, regional thickness and occurrence measurement, projection calculation of tunnel-rock relationship, prediction of forward hole in inclined well and so on, the occurrence range of harmful gas in a certain rock stratum is calculated. Then the location of harmful gas in the tunnel in the next stage is deduced and verified by a small amount of drilling, which makes the advance geological drilling more targeted, and can greatly reduce the number of drilling holes and save the construction time. This method can accurately predict the position of harmful gases and provide basis for design optimization and construction organization in advance.
【作者单位】： 中铁隧道集团一处有限公司;中铁隧道勘测设计院有限公司;
【分类号】：U456.3
本文编号：2430401
[Abstract]:Tianping Tunnel passes through non-coal strata containing harmful gases. In order to solve the problem of high cost of geological drilling prediction and serious influence on construction progress, according to the location of harmful gas in the early stage, the thickness and occurrence of strata, and so on, Based on the known conditions between tunnel and rock strike, regional thickness and occurrence measurement, projection calculation of tunnel-rock relationship, prediction of forward hole in inclined well and so on, the occurrence range of harmful gas in a certain rock stratum is calculated. Then the location of harmful gas in the tunnel in the next stage is deduced and verified by a small amount of drilling, which makes the advance geological drilling more targeted, and can greatly reduce the number of drilling holes and save the construction time. This method can accurately predict the position of harmful gases and provide basis for design optimization and construction organization in advance.
【作者单位】： 中铁隧道集团一处有限公司;中铁隧道勘测设计院有限公司;
【分类号】：U456.3
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1 孙国林;;铁路运营隧道有害气体防治[J];内蒙古科技与经济;2010年24期
2 孙伟;;台子山隧道有害气体防治[J];科技情报开发与经济;2007年05期
3 吴应明;华蓥山隧道有害气体监测与综合治理技术[J];现代隧道技术;2003年04期
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