Coal and gas outburst monitoring device
A coal and gas outburst monitoring device includes the insertion and anchoring assembly, and the pump drainage and monitoring mechanism; the insertion and anchoring assembly is vertically inserted and distributed on the sidewall of surrounding rock of coal mine roadway, and the insertion and anchoring assembly can monitor the stress change data in the sidewall of surrounding rock in real time; the pump drainage and monitoring mechanism is erected within the coal mine roadway, and the pump drainage and monitoring mechanism can cooperate with the insertion and anchoring assembly to perform the gas pump drainage monitoring for the sidewall of surrounding rock of goaf, and to obtain the gas seepage monitoring data in the surface layer and the inner layer of sidewall of surrounding rock. Thus, comparing with the database mechanism, the accurate and advanced predictions for the gas outburst can be made.
1. A coal and gas outburst monitoring device, comprising:
gas concentration sensors evenly arranged within a coal mine roadway, and used for monitoring the gas concentration at region ranges in real time;
temperature and humidity sensors distributed within the coal mine roadway; wherein, wind direction sensors are provided within the coal mine roadway;
an insertion and anchoring assembly, vertically inserted and distributed on a sidewall of a surrounding rock of the coal mine roadway; wherein the insertion and anchoring assembly is configured for monitoring stress change data in the sidewall of the surrounding rock in real time;
a pump drainage and monitoring mechanism, erected within the coal mine roadway;
wherein the pump drainage and monitoring mechanism is configured for cooperating with the insertion and anchoring assembly to perform a gas pump drainage monitoring for the sidewall of the surrounding rock of a goaf, to obtain gas seepage monitoring data in a surface layer and an inner layer of the sidewall of the surrounding rock;
a voice alarm and the alarm light, correspondingly distributed at a wellhead and a working face, which is used to issue a warning alarm;
a central monitor system, having data storage, a real-time display, an alarm triggering, and data analysis; wherein the central monitor system is combined with a data analysis software, a database mechanism, and data visualization tools to analyze gas concentration monitoring data in the coal mine roadway.
2. The coal and gas outburst monitoring device according to claim 1 , wherein the pump drainage and monitoring mechanism comprises a ground rail, a column frame, a connecting and guiding frame, and a docking assembly;
the ground rail is parallel laid on a roadway ground;
the column frame is slidably connected to the ground rail through a sliding seat, the column frame is vertically fixed above the sliding seat, and a position between the column frame is laterally connected with a fixing frame;
the connecting and guiding frame is vertically fixed on the column frame; and
the docking assembly is slidably provided on the connecting and guiding frame, and the docking assembly is configured for performing an end sealing docking with the insertion and anchoring assembly.
3. The coal and gas outburst monitoring device according to claim 2 , wherein, the docking assembly comprises a sealing cylinder seat, a screw, and a telescopic tube;
the sealing cylinder seat is slidably provided on the connecting and guiding frame, and one side of the sealing cylinder seat is provided with a fixing and connecting tube;
the screw is horizontally symmetrically fixed on a upper side and a lower side of the fixing and connecting tube, one end of the screw is slidably extended into the sealing cylinder seat, and the telescopic tube is connected between the sealing cylinder seat and the fixing and connecting tube; and
the telescopic tube is horizontally communicated between the sealing cylinder seat and the fixing and connecting tube, and one side of the sealing cylinder seat is connected with a flow tube.
4. The coal and gas outburst monitoring device according to claim 3 , wherein an inner portion of the fixing and connecting tube is coaxially provided with a cavity surround component;
the inner portion of the cavity surround component is slidably provided with a sealing ring plug;
one side of the fixing and connecting tube is provided with a shaft ring frame;
the shaft ring frame is connected to the sealing ring plug through a bearing rod;
the shaft ring frame is distributed with a clamping component in an inner circumference;
a cross-section of the clamping component is a L-shaped structure;
the shaft ring frame is provided with an abutting ring;
one side wall of the clamping component is abutted against and in contact with the abutting ring;
the end of the clamping component is provided with a sealing rubber;
a contacting face between the clamping component and the abutting ring is configured as an inclining structure; and
the cavity surround component is externally connected with a pneumatic tube.
5. The coal and gas outburst monitoring device according to claim 3 , wherein a gas supply tube is provided on the sealing cylinder seat.
6. The coal and gas outburst monitoring device according to claim 1 , wherein the insertion and anchoring assembly comprises
a fixing anchor rod; wherein the fixing anchor rod is configured as a hollow rod frame structure; one end of the fixing anchor rod is provided with a joint sleeve in a sleeving mode; and one end of the joint sleeve is extended into the pump drainage and monitoring mechanism and is correspondingly communicated to the docking assembly in the pump drainage and monitoring mechanism;
an airflow hole, distributed on the fixing anchor rod;
a drilling hole vacancy, arranged and distributed on the fixing anchor rod; wherein the drilling hole vacancy is defined inside the sidewall of the surrounding rock of the coal mine roadway through a drilling machine; and
an insertion tube, provided correspondingly to the drilling hole vacancy; wherein one end of the insertion tube is correspondingly communicated to the drilling hole vacancy, another end of the insertion tube is run through and located on an outer side wall of the surrounding rock of the coal mine roadway; the insertion tube is defined with a through-hole.
7. The coal and gas outburst monitoring device according to claim 6 , wherein the insertion tube is buried in the sidewall of the surrounding rock of the coal mine roadway from different directions; an end of the insertion tube is provided with an one-way valve; the fixing anchor rod 21 is distributed with a stress section.
8. The coal and gas outburst monitoring device according to claim 6 , wherein an inner portion of the fixing anchor rod is slidably provided with a locating plug in a sealing mode, and the inner portion of the locating plug is coaxially provided with an inner tube in a penetrating mode, and the inner portion of the joint sleeve is provided with a cutting tube, which is communicated to the inner tube through a telescopic hose.