Built-in valve chamber of tank completely covered with soil

A soil completely-covered tank system with a built-in valve chamber, comprising:

• a spherical tank body, an exterior of the spherical tank body being completely covered with soil, the spherical tank body being connected to a stand column, the stand column being used for supporting the spherical tank body, and the bottom of the stand column being arranged on a ground foundation, such that a gap is formed between the bottom of the spherical tank body and the ground foundation;
• a valve chamber, the valve chamber being arranged between the spherical tank body and the ground foundation, and the valve chamber being provided with a top opening and a side opening;
• the top opening of the valve chamber being connected to an outer wall on the bottom of the spherical tank body by means of a first connecting structure, such that the valve chamber supports the bottom of the spherical tank body;
• and the first connecting structure enabling a sealed connection state to be formed between the top opening of the valve chamber and the spherical tank body;
• and
• a channel, one end of the channel being connected to the side opening of the valve chamber by means of a second connecting structure, the other end of the channel extending outwards to be in communication with an outside of a soil layer, and the second connecting structure enabling a sealed connection state to be formed between the side opening of the valve chamber and the channel,
• the first connecting structure comprises a first base plate and a first waterproof layer, the first base plate is arranged between the top opening of the valve chamber and the spherical tank body, and the first waterproof layer is arranged on an outer wall position where the first base plate, the valve chamber and the spherical tank body are connected;
• the second connecting structure comprises a second base plate, cement, and the first waterproof layer, the second base plate is arranged between the side opening of the valve chamber and the channel, and the cement is arranged on an end, facing the channel, of the second base plate to reinforce the position of the second base plate;
• and one end of the first waterproof layer is connected to an outer wall of the spherical tank body, and the other end thereof extends to an outer wall on the top of the channel to perform connection, so that the first base plate and the second base plate are sealed at the same time;
• an outer wall of the channel is provided with a plurality of deformation joints at intervals, and a spacing distance among the deformation joints does not exceed 10 m;
• a third base plate is arranged in the deformation joints, an inner side, facing the channel, of the deformation joint is provided with the cement for reinforcing the third base plate, an outer side thereof is provided with a second waterproof layer, and an exterior of the second waterproof layer is covered with soil;
• all of the first base plate, the second base plate and the third base plate are set as wood fiber plates dipped with emulsified asphalt, the cement is set as polyvinyl chloride cement, and both of the first waterproof layer and the second waterproof layer are set as self-adhesive waterproof rolls.