5 results about "Ice core" patented technology

The application discloses a polar drilling hole wall directional coring drill, which comprises a shell, an upper hot melting drill bit, a reverse torsion mechanism, a cable chamber, a control system, a hole positioning mechanism, a supporting mechanism, a reaming mechanism and a coring mechanism, wherein the upper hot melting drill bit is assembled at the top of the shell, the reverse torsion mechanism, the cable chamber, the control system, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism are sequentially assembled in the shell from top to bottom, and the control system is connected with the upper hot melting drill bit, the reverse torsion mechanism, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism respectively. The application has the advantages that the coring direction can be accurately controlled, the demand of polar scientific research can be met, the drill is provided with the reaming mechanism, the auxiliary time is greatly shortened, the ice core tube can be telescoped to store the ice core in real time, the loss of the ice core is avoided, the drill adopts the modular design, the structure is simple and compact, the burden of polar logistics guarantee is reduced, and the drill is suitable for coring drilling in a harsh environment.

The present application relates to polar ice layer drilling technology field, disclose a kind of double-layer cutting hot melt chip removal large-diameter ice core coring drill. The drill includes cable suspension and electronic component system, melt chip pump suction system, anti-torque and driving system and coring system arranged coaxially in sequence;Melt chip pump suction system includes water tank, water suction pump, water suction pipe and melt chip resistance wire, melt chip resistance wire is arranged around the outside of drill bit body in coring system, melt chip resistance wire is electrified and heated during drilling, for cutting the solid ice chip generated in real time hot melt into liquid melt water, water suction pump is used to pump melt water at the bottom of borehole to the inside of water tank for storage by water suction pipe.The present application eliminates the sticking accident caused by the fact that the ice chip is not removed cleanly when obtaining large-diameter ice core from the root, reduces the space occupied by melting the ice chip into water, has the advantages of compact structure, good ice core quality, high drilling efficiency, etc., and is suitable for coring operation in polar, alpine glacier and other scenes.

The application discloses a device for continuous extraction of ice core gas and synchronous collection of water body and a use method. The device comprises a sample containing shell, a sample pushing mechanism is arranged on the closed end of the sample containing shell, a transparent cover is arranged on the open end, and a melting ice part is arranged in the cover. The sample sealing sleeve comprises a transparent soft sleeve, the closed end of the soft sleeve is arranged in the sample containing shell and connected with the sample pushing mechanism penetrating through the closed end of the sample containing shell, and the open end of the soft sleeve extends out. When the cover is buckled with the sample containing shell, the part of the soft sleeve in the sample containing shell forms a sealed cavity containing ice core with the cover. The ice core is moved to the melting ice part under the pushing of the sample pushing mechanism and is melted by the melting ice part. The sample containing shell and the cover are provided with a blowing pipe, a gas sampling pipe and a drainage pipe are arranged on the cover, and the drainage pipe is connected with a water body collecting member. The application realizes continuous extraction of gas samples and synchronous collection of water samples for the whole ice core.

This invention discloses a heat pipe-type insulated sampling drill bit and method for drilling polar ice cores and natural gas hydrates in terrestrial permafrost regions. The drill bit includes a double-walled drill rod, a refrigerant storage chamber, a direct-heating pipe, a spiral heat pipe, and a drill bit. The double-walled drill rod comprises an inner tube and an outer tube with an annular gap between them; the inner wall of the drill rod serves as a core sampler. The refrigerant storage chamber is located at the upper end of the drill rod and is filled with liquid nitrogen; a high-pressure air inlet is located at the upper end of the refrigerant storage chamber. The direct-heating pipe is located at the lower end of the refrigerant storage chamber and is situated within the annular gap of the drill rod. The spiral heat pipe is located at the lower end of the direct-heating pipe and is connected to it; the spiral heat pipe is situated within the annular gap of the drill rod and is filled with Freon. The drill bit is located at the lower end of the drill rod. This invention offers high sample collection efficiency and minimizes disturbance to the original state of ice cores and natural gas hydrates.

The invention relates to the technical field of mechanical detection, in particular to ice body strength in-situ rapid detection equipment and a detection method. The method comprises the following steps: obtaining ice body morphological characteristics and ice body structural characteristics corresponding to a target ice body area, and carrying out detection point division and ultrasonic propagation detection to obtain ice body ultrasonic propagation speed data corresponding to a detection point; a corresponding ice core sample is drilled at the ice body detection point, cutting and surface optimization treatment are carried out on the ice core sample, and meanwhile, a compression resistance-shear resistance mechanical strength test is carried out, so that ice body mechanical strength data corresponding to the detection point are obtained; the corresponding ice body ultrasonic propagation speed data and ice body mechanical strength data are repeatedly collected by replacing ice body detection points, an ultrasonic propagation-mechanical strength relation model is established, and meanwhile an ice body strength in-situ distribution diagram corresponding to the target ice body area is rapidly obtained. According to the invention, the high-precision and rapid detection process of the ice body strength can be realized.