CN101586452B - Method of monitoring coal mining solid pack pressure - Google Patents

Abstract

The invention discloses a method for monitoring the pressure of a coal mining solid filling body, which is suitable for monitoring the pressure of a goaf filling body during solid filling coal mining in an underground mine. Multiple filling body pressure monitors are arranged in the filling mechanized goaf, arranged in rows, and each row of filling body pressure monitors is evenly arranged along the working face; when data is collected, the communication lines of each row of filling body pressure monitors are passed through The junction box is connected to the communication main line in the coal transportation lane, that is, the communication line of the filling body pressure monitor is connected to the communication main line through the junction box, and then connected to the communication master station through the communication main line, and finally the data of the communication master station is transmitted through the telephone line. Into the ground data receiving system, the pressure of the solid filling body is monitored online, and the pressure data is analyzed through the monitoring host to prevent the gob filling from being damaged. The method is simple, easy to operate and high in accuracy, can improve the filling effect and avoid potential safety hazards.

Description

Pressure Monitoring Method of Solid Filling Body in Coal Mining

technical field

The invention relates to a pressure monitoring method, in particular to a method for monitoring the pressure of a coal mining solid filling body suitable for solid filling coal mining technology in underground mines.

technical background

At present, the solid filling coal mining technology is more and more applied at home and abroad because of its advantages of reducing the deformation of the key layer of the overlying rock, reducing the surface settlement, and making full use of waste such as waste gangue, and has produced good economic and social benefits . In the solid filling coal mining technology, after the filling body is filled into the goaf, with the advancement of the working face, there is no method to solve this problem at present. Being able to grasp the pressure of the filling body in the goaf in time is not only beneficial to analyze and grasp the filling effect, but also facilitates the filling process to be improved at any time by changing the properties of the filling body (proportion, water content) and compaction, etc. Improve the filling effect and avoid potential safety hazards.

Contents of the invention

Technical problem: The purpose of the present invention is to provide a method for monitoring the pressure of coal mining solid filling body which is simple, easy to operate, and can accurately monitor the pressure of the filling body.

Technical solution: The coal mining solid filling body pressure monitoring method of the present invention:

a. In the pre-filled goaf following the advance of the coal mining face, multiple filling body pressure monitors are buried in multiple rows at intervals;

b. Use the pressure monitor communication line to lead the connection line of each filling body pressure monitor in each row to the junction box of the coal transportation lane;

c. Carry out solid filling row by row;

d. Use the communication main line to connect the junction box with multiple rows of leads in series to the underground communication master station to form a data acquisition system for the underground working face;

e. Use the telephone line to transmit the data of the underground communication master station to the ground data collection system composed of the monitoring host receiving unit and the monitoring host connected to the monitoring host receiving unit, and monitor the pressure of the solid filling body in real time through the ground data collection system Monitor, and analyze the pressure data through the monitoring host to determine the effect of solid filling.

The filling body pressure monitors buried in multiple rows at intervals are 2 to 4 rows, the distance between the rows is 25 to 35m, the distance between the first row and the incision is about 15m, and the filling body pressure buried in each row is about 15m. There are 3 to 6 monitors; the filling body pressure monitors are evenly distributed along the working face.

Beneficial effects: a plurality of filling body pressure monitors are arranged in the fully mechanized mined-out area of filling, arranged in rows, and each row of filling body pressure monitors is evenly arranged along the working face; when data is collected, each row of filling body pressure monitors The communication line is connected to the communication main line in the coal transportation lane through the junction box, that is, the communication line of the filling body pressure monitor is connected to the communication main line through the junction box, and then connected to the communication main station through the communication main line, and finally connected to the communication main station through the telephone line. The data is transmitted to the ground data receiving system, and the pressure of the solid filling body is monitored online, and the pressure data is analyzed through the monitoring host to determine the effect of the solid filling. The monitoring method can not only accurately monitor the pressure of the filling body, but also transmit and analyze the data synchronously, so as to know the filling effect of solid filling coal mining in time. The method is simple, easy to operate, high in accuracy, can improve the filling effect, avoid potential safety hazards, and has wide practicability.

Description of drawings

Accompanying drawing is the structural representation of the present invention.

In the figure, 1-coal transport roadway, 2-filling body pressure monitor, 3-cut hole, 4-goaf, 5-junction box, 6-communication main line, 7-communication master station, 8-communication line of pressure monitor , 9-monitoring host receiving unit, 10-telephone line, 11-monitoring host.

Detailed ways

An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

The coal mining solid filling body pressure monitoring method of the present invention: in the pre-filled goaf 4 advanced by the filling and mining working face, 3 rows of filling body pressure monitors 2 are arranged, and each row is arranged with 3, and the pressure monitor 2 between the rows The distance is 25m-35m, the distance from the first row to the cutting hole 3 is about 15m, the average buried depth of the filling mining face is 350m, the face length is 50m, and the advancing length is 460m. According to the actual needs of the site, the filling body pressure monitor 2 can be arranged in 2 to 4 rows, and each row is buried with 3 to 6 pieces at intervals, and each filling body pressure monitor 2 in each row is connected with a pressure monitor communication line 8 In the junction box 5 of the coal transportation lane 1, in order to protect the communication line 8 of the filling body pressure monitor, a trench is dug at its embedding position and pre-buried, so that the filling body can be avoided when the filling material falls from the top. Impact damage to the communication line 8 of the pressure monitor. Then solid filling is performed row by row in the goaf where the filling body pressure monitor 2 is buried, and the filling body pressure monitor 2 is evenly distributed along the working face. Each row of filling body pressure monitor communication lines 8 is connected to the communication main line 6 in the coal transportation lane 1 through the junction box 5 . When the filling body pressure monitors 2 are arranged in two rows, they are connected to the communication main line 6 through two junction boxes 5; when the filling body pressure monitors 2 are arranged in three rows, they are connected to the communication main line 6 through three junction boxes 5 On the main line 6, when the filling body pressure monitors 2 are arranged in 4 rows, they are connected to the communication main line 6 through 4 junction boxes 5, and the data of all filling body pressure monitors 2 are collected to the wiring through the pressure monitor communication line 8 Box 5, and transmitted to the communication master station 7 through the communication main line 6, and then transmitted to the ground data collection system by the telephone line 10, the ground data receiving system is composed of a KJ216-J monitoring host receiving unit 9 and Lenovo Tiangong monitoring host 11, Through software programming, the monitoring host 11 analyzes the collected pressure data, and the staff can monitor the pressure of the solid filling body in the goaf 4 in real time in the ground data collection system to determine the effect of the solid filling and the filling effect of the filling body. The pressure monitor 2 displays the pressure data of the filling body.

Claims (3)

1. method of monitoring coal mining solid pack pressure is characterized in that:

A, in the goaf (4) of following the pre-filling that coal-face advances, divide many rows to bury a plurality of obturation pressure monitors (2) at interval underground;

B, with pressure monitor connection (8) with each row in each obturation pressure monitor (2) line cause fortune coal road (1) junction box (5) in;

C, carry out solid filling by row;

D, the junction box (5) of utilizing communication main line (6) will arrange lead-in wire are contacted to downhole communication main website (7) more, constitute the mining face under mine data collecting system;

E, utilize telephone wire (10) with the transfer of data of downhole communication main website (7) to ground data gathering system by monitoring main frame receiving element (9) and monitoring main frame (11) formation that links to each other with monitoring main frame receiving element (9), by the ground data gathering system pressure condition of solid filling body is monitored in real time, and by the monitoring main frame (11) pressure data is analyzed, determine the effect of solid filling.

2. method of monitoring coal mining solid pack pressure according to claim 1, it is characterized in that: it is 2～4 rows that described branch is arranged the obturation pressure monitor of burying underground at interval (2) more, distance between row and row is 25～35m, first row is about 15m from the distance of cutting eye (3), and the obturation pressure monitor (2) that every row buries underground is 3～6.

3. method of monitoring coal mining solid pack pressure according to claim 1 and 2 is characterized in that: described obturation pressure monitor (2) evenly distributes along work plane.

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