复合土层中孤石探测及处理方案

Detection and Processing Options of Boulders in Composite Earth Layer

针对福州地区工程地质实际,采用＂微动探测加地质钻机验证＂探寻孤石,该方法成功率一般能够达到60%~80%,且费用低。应用阿特拉斯地质凿岩机进行＂20~30 cm间距密打孔,打成筛状＂的方法处理广泛分布片状孤石群,其岩石破碎处理速度快、占地小、效果明显,且价格低廉,处理后能够保证盾构机顺利掘进通过。

Based on landform and geological conditions in Fuzhou area. ＂microtremor survey and geological rig verification＂ is adopted to explore the boulders, and the succcss rate of this method in general could achieve 60% to 80% with rather low cost. The Atlas geological drilling machine is used for dense drilling with 20 - 30 cm distance, the widespread flake boulder is cut into cribriform. This method features quick processing speed for rock crushing, smaller land occupation and obvious effect. After boulder proccssing, the shield machine could drive through smoothly.