84results about How to "Achieve mining" patented technology

The invention relates to a fluidized mining method of combustible ice through rotary jet grouting and pressure relieving. The situations of pressure change and the like in a reservoir stratum can be grasped timely while pressure-relief mining is conducted on combustible ice resources, corresponding improving treatment is provided, and relative information of the reservoir stratum can be timely collected, fed back and processed while the mining speed and the like can be effectively controlled; and meanwhile the fluidized mining method of the combustible ice through rotary jet grouting and pressure relieving is low in mining cost, easy to achieve, high in economical efficiency, simple in mining technology and mature in related application equipment technology, and can rapidly achieve industrial mining application.

The invention provides a rocker-type transverse shearer. The shearer comprises a machine body consisting of a plurality of case separation cavities, and a power transmission chain, a rocker, a roller and a coiling block which are respectively arranged inside the case separation cavities, wherein a sliding board is arranged at the lower part of the machine body; and the power transmission chain comprises a main transmission wheel connected with a motor spindle and a pair of secondary transmission wheels which are engaged with one another for driving front and back vertical transmission shafts to output power so as to drive a last-stage transmission gear shaft, a roller on a gear shaft of a speed-reducing transmission box, a chain wheel transmission device and cutting teeth to run synchronously. Therefore, a technical scheme of transverse full-section no-dead-angle all-dimensional coal mining is realized. The rocker-type transverse shearer can overcome the defects that the conventional coal mining device can be only used for exploiting coal layers on the top face and the lateral face of a small-dip roadway structure while coal layers between two rollers cannot be synchronously exploited, solves the difficult problem that coal layers on the bottom face of the structure with a roadway dig being more than 25 degrees and coal layers between the two rollers are abandoned without exploitation, is applicable to exploitation of the coal layer on the bottom face of the roadway dig structure of a coal mine, and is particularly applicable to the full-section no-dead-angle all-dimensional exploitation of the coal layer on the bottom face of the structure with the roadway dig being more than 25 degrees and thin coal layers of mediate and small-sized coal mines.

The invention discloses a loop heat pipe type terrestrial heat exploitation system with adjustable and controllable working medium circular flow. The loop heat pipe type terrestrial heat exploitation system comprises a casing pipe type loop heat pipe, an earth surface heat exchanger and a liquid storage box. The earth surface heat exchanger and the liquid storage box are both located on the ground. The casing pipe type loop heat pipe comprises an evaporation section, a heat insulation section and a backflow section. The evaporation section is located in a high temperature heat reservoir. The earth surface heat exchanger is provided with a condensation section, and the condensation section and the outside carry out heat exchange. A one-way valve or a steam pump is arranged between the heat insulation section and the condensation section. A one-way throttle valve is arranged between the liquid storage box and the backflow section. The evaporation section, the heat insulation section, the condensation section, the liquid storage box and the backflow section are communicated in sequence end to end. Working medium fluid of the liquid storage box enters the evaporation section through the backflow section, and the liquid working medium fluid entering the evaporation section generates film boiling after absorbing heat. According to the loop heat pipe type terrestrial heat exploitation system, the working medium fluid of the liquid storage box passes through the backflow section, the liquid phase backflow mode and the boiling mode of the evaporation section are controlled, the effective filling factor of the terrestrial heat pipe can be adjusted in real time, and therefore terrestrial heat energy is stably and efficiently extracted.