NOVELTY - A high concentration bit pressure type self slag discharge methane generating pool comprises a bit pressure pool (2), a horizontal methane fermenting pool (3) and a gas holder pool (12). The bit pressure pool is the material inlet end, which is provided with a sand depositing groove and a blender (1) blending the material. The outlet of the pool is connected with the closed horizontal methane fermenting pool. The bottom of the fermenting pool is the slope shape and the slope ratio is 1:4-6 and the inner bottom of the pool is provided with a heating device (8).    USE - As high concentration bit pressure type self slag discharge methane generating pool (claimed).    ADVANTAGE - The material concentration of the device is more than 15%, the concentration is higher for 2.5 times compared with the wet fermenting concentration; and the cubic capacity is greater than 2M3 and can be raised for more than 5 times compared with the wet fermenting gas generating rate. The methane pool can be built under ground in horizontal mode, the energy consumption is low, and the normal operation in winter for the north can be guaranteed. The material can be charged and discharged automatically, and the running cost is low. The slag and liquid after generating the methane can be used as the fertilizer.    DETAILED DESCRIPTION - A high concentration bit pressure type self slag discharge methane generating pool comprises a bit pressure pool (2), a horizontal methane fermenting pool (3) and a gas holder pool (12). The bit pressure pool is the material inlet end, which is provided with a sand depositing groove and a blender (1) blending the material. The outlet of the pool is connected with the closed horizontal methane fermenting pool; the bottom of the fermenting pool is the slope shape and the slope ratio is 1:4-6 and the inner bottom of the pool is provided with a heating device (8). The top of the front section of the fermenting pool is provided with an isolating wall (4) while the rear part of the fermenting pool is provided with a baffle wall (9). The rear part of the fermenting pool is connected to the gas holder pool (12) via the baffle wall outlet (11). The pool is provided with a glass steel gas holder (15), and the gas holder is connected with the slag storing pool (19) via the baffle port (20) and baffle passage (18). The cover of fermenting pool is connected with a methane pipeline (7) and the pipeline is connected to the gas holder (15).    DESCRIPTION OF DRAWING(S) - The figure shows the section structure of marsh gas pool diagram.    Blender (1)    Bit pressure pool (2)    Horizontal methane fermenting pool (3)    Isolating wall (4)    Methane pipeline (7)    Heating device (8)    Baffle wall (9)    Baffle wall outlet (11)    Gas holder pool (12)    Glass steel gas holder (15)    Baffle passage (18)    Slag storing pool (19)    Baffle port (20)