The invention discloses a device for in-situ collection of pore water and gas in sediments and
wetland soil. The device comprises a plurality of collection tubes,
silicone tubes, a liquid sampling device, a conical head and a cylindrical connecting piece, the collection tube comprises a tube body, a spacing platform, an internal thread, a sampling hole and an external thread; internal threads arearranged on the inner side wall of the top of the
pipe body, a spacing platform is fixedly arranged on the outer side wall of the top of the
pipe body, external threads matched with the internal threads are arranged at the bottom of the
pipe body, and a penetrating sampling hole is formed in one side of the spacing platform. The
silicone tubes are fixedly arranged between the spacing platforms ofthe adjacent collecting tubes; the cylindrical connector is arranged at the upper part of the collection tube; the conical head is arranged at the lower part of the collecting tube; the liquid sampling device is arranged at the upper part of the cylindrical connecting piece. The device is a multifunctional device integrating in-situ collection, liquid collection and gas collection, the device is simple and easy to assemble, each
assembly unit is light in weight and convenient to carry, the device can be well suitable for indoor and field sampling work, and the operation is simple and efficient.