The present invention relates to a ducting system (100) for conveying a flow of a gaseous feed (110) comprising a combustible component from an inlet to at least one combustion module (12), the ducting system (100) utilising a combination of a sensor (C0) for measuring the concentration of the combustible component in the gaseous feed (110), a flame detector (F0, F1, F2, F3, . . . , Fn) a shut-off valve (6) and a flame arrestor (5) located in a flow path of the gaseous feed upstream of the shut-off valve (6) such that a measurement of a concentration of combustible material in the gaseous feed over a specified concentration by the sensor (CO) causes the shut-off valve (6) to be configured to the closed position for preventing flow of a gaseous feed comprising a combustible mixture of the combustible component from reaching an ignition source and/or detection of flame by the flame detector (F0, F1, F2, F3, . . . , Fn) causes shut-off valve (6) to be configured to the closed position for attenuating propagation of a flame towards the inlet.

The present invention relates to a ducting system (100) for conveying a flow of a gaseous feed (110) comprising a combustible component from an inlet to at least one combustion module (12), the ducting system (100) utilising a combination of a sensor (C0) for measuring the concentration of the combustible component in the gaseous feed (110), a flame detector (F0, F1, F2, F3, . . . , Fn) a shut-off valve (6) and a flame arrestor (5) located in a flow path of the gaseous feed upstream of the shut-off valve (6) such that a measurement of a concentration of combustible material in the gaseous feed over a specified concentration by the sensor (CO) causes the shut-off valve (6) to be configured to the closed position for preventing flow of a gaseous feed comprising a combustible mixture of the combustible component from reaching an ignition source and/or detection of flame by the flame detector (F0, F1, F2, F3, . . . , Fn) causes shut-off valve (6) to be configured to the closed position for attenuating propagation of a flame towards the inlet.

A method and a system for supervising safety ventilation of an underground gas pipeline corridor based on Internet of Things (IoT) are provided. The method is executed by a gas company management platform. The method includes obtaining environmental data of a pipeline corridor segment of the underground gas pipeline corridor from a gas equipment object platform via a gas company sensing network platform, and obtaining pipeline corridor data of the underground gas pipeline corridor from a government supervision comprehensive database via a smart gas government safety supervision sensing network platform, wherein the pipeline corridor data include at least one of ventilation data, structural data, and distribution sequence data; determining a corrosion reaction degree of the pipeline corridor segment based on the environmental data and the pipeline corridor data; and adjusting a ventilation intensity of the pipeline corridor segment in response to the corrosion reaction degree meeting a predetermined adjustment condition.

A method and a system for supervising safety ventilation of an underground gas pipeline corridor based on Internet of Things (IoT) are provided. The method is executed by a gas company management platform. The method includes obtaining environmental data of a pipeline corridor segment of the underground gas pipeline corridor from a gas equipment object platform via a gas company sensing network platform, and obtaining pipeline corridor data of the underground gas pipeline corridor from a government supervision comprehensive database via a smart gas government safety supervision sensing network platform, wherein the pipeline corridor data include at least one of ventilation data, structural data, and distribution sequence data; determining a corrosion reaction degree of the pipeline corridor segment based on the environmental data and the pipeline corridor data; and adjusting a ventilation intensity of the pipeline corridor segment in response to the corrosion reaction degree meeting a predetermined adjustment condition.

A raise boring head for rotary boring in rock having a main body mountable at a drive shaft in which a mount face provides a supporting surface for a plurality of saddles that mount, in turn, respective roller cutters. At least one guide block is attached to the main body to project upwardly from the mount face and includes at least one guide face to facilitate the transport of cut material away from the mount face.

A longwall 110 mining method, wherein a haulage dip, an air-return dip and a track dip are provided, a plurality of working faces are arranged in a whole panel, both an upper gateroad and a lower gateroad of each mining face in mining are connected to the haulage dip, and the lower gateroad that retains an entry after the working face is mined is used as an upper gateroad of a next working face, and the lower gateroad of the next working face is connected to the air-return dip. The upper gateroad and the lower gateroad of each working face in mining of the present disclosure are connected to the haulage dip, and the lower gateroad of the working face is connected to the air-return dip.

A longwall N00 mining method includes performing a no-entry excavation and non-pillar mining in N working faces of a new district, and the whole district is provided with an air-return dip, a haulage dip and a track dip, wherein the air-return dip and the track dip are located on one end of the district, and the haulage dip is connected to the other end of the district, and connected to the air-return dip. This method can not only ensure ventilation of the whole coal cutting are, but also when mining is performed in each working face in the district, entries can be automatically formed due to top-cutting pressure release by using a part of a gob area, and thereby it is not required to separately excavate any gateroad entry during mining coal nor need to retain any coal pillar, so as to save resources and improve efficiency.

A longwall N00 mining method includes performing a no-entry excavation and non-pillar mining in N working faces of a new district, and the whole district is provided with an air-return dip, a haulage dip and a track dip, wherein the air-return dip and the track dip are located on one end of the district, and the haulage dip is connected to the other end of the district, and connected to the air-return dip. This method can not only ensure ventilation of the whole coal cutting are, but also when mining is performed in each working face in the district, entries can be automatically formed due to top-cutting pressure release by using a part of a gob area, and thereby it is not required to separately excavate any gateroad entry during mining coal nor need to retain any coal pillar, so as to save resources and improve efficiency.

A zero-emission, high-speed, autonomously controlled shipping container transport vehicle includes a first camera, a rotatable truck coupled to a plurality of front wheels, a steering motor, and a first flatbed frame. A second flatbed frame is configured to receive a battery module. A third flatbed frame is configured to communicate a load to the rear wheels. An electric battery module is disposed in the space of the second flatbed frame. A traction motor is coupled to at least one front wheel or rear wheel and is configured to derive electrical energy from the electric battery module. A vehicle controller is communicably coupled to the first and second cameras, traction motor, and steering motor, and is configured to operate in an autonomous mode to autonomously direct the traction motor to accelerate or decelerate and direct the steering motor to guide the vehicle.

Provided is a blower installed at a manhole opening, with which it is possible to facilitate an entry or an exit of a worker or an import or an export of an article. The present invention provides a ventilation system comprising a frame and a single or a plurality of airflow generation means arranged at the frame, a direction of an airflow is adjusted so that the airflow generated from the airflow generation means flows along with a virtual axis penetrating a virtual surface which the frame is regarded as to periphery, and the airflow flows while swallowing up the surrounding air of the virtual axis, and an air volume more than two times of total fluid volume of the airflow is generated.