CN203203551U

CN203203551U - Protected coal seam expansion deformation and coal seam floor seam separation amount determination device

Info

Publication number: CN203203551U
Application number: CN 201320125283
Authority: CN
Inventors: 于俊洋; 曹召丹; 成艳英
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-09-18
Anticipated expiration: 2023-03-19

Abstract

The utility model relates to a protected coal seam expansion deformation amount and coal seam floor seam separation amount determination device. According to the device, two spring mechanisms which have the same structure are used as base points in a borehole; a fine steel bar penetrates a six division tube; and the fine steel bar and the six division tube are respectively connected with two spring mechanism supporting rods. According to the borehole, the protected coal seam expansion deformation amount is read through relative dislocation of the outer fine steel bar and scales at the tail end of the six division tube; and the coal seam floor seam separation amount is read through relative aperture dislocation of scales at the tail end of the six division tube. The spring mechanisms of the device are simple in structure. A tension spring which is arranged between a tray and a clamping claw is fixed by a pin. When a design position is reached, a nylon rope which is connected with the pin is pulled outside the borehole. The pin is pulled out. The spring retracts to drive the clamping claw to move. A tip at the front end of the clamping claw is clamped into a coal rock, so that the device is fixed in the borehole. According to the determination device, the transportation of the spring mechanisms in the borehole is convenient and is not affected by borehole deformation and obstacles in the borehole; the installation process is convenient and labor-saving; the device does not slide down when affected by mining; two important parameters of the coal seam expansion deformation amount and the coal seam floor seam separation amount can be visually read at the same time; and an effective parameter support is provided for protective layer effect investigation.

Description

A kind of protected coal seam dilatational strain and seat earth absciss layer amount determining device

Technical field

The utility model relates to a kind of rock deformation determinator, particularly for the determinator of protected coal seam dilatational strain and seat earth absciss layer amount.

Background technology

The protective seam exploitation is control coal and the most effective regional measure of Gas Outburst; " control coal and Gas Outburst regulation " according to State Administration of Quality and Technical Supervision's promulgation; coal seam dilatational strain amount has become the important indicator to protected coal seam gas control effect expedition; when the maximum swelling deflection of protected seam greater than 3/1000ths; check and investigation result are applicable to same protective seam and the protected seam in other zones, so Accurate Determining coal seam dilatational strain amount is significant for protective seam exploitation.The protective seam exploitation certainly will cause strata movement, and the seat earth absciss layer causes a significant threat roadway support and borehole operation, realizes that the base plate the roof separation value monitor is the Important Action that guarantee work safety of coal mine is produced.

At present deep basic point method is adopted in the mensuration of coal seam dilatational strain and seat earth absciss layer amount more; namely to the protected coal seam construction drill; in boring, close on respectively fixed base point of Seam Roof And Floor; the relative displacement of two basic points and bore angle convert and can obtain coal seam dilatational strain amount, and the relative aperture displacement of base plate basic point namely is seat earth absciss layer amount through angle conversion.It is fixing that traditional handicraft adopts a pair of dislocation gad to realize in the hole, the process of gad dislocation wedging wastes time and energy, and be difficult to be transported to design attitude because boring distortion and drilling cuttings affects gad, though in addition since mining influence install good gad also very easily produce become flexible, landing causes and measures unsuccessfully.

Summary of the invention

For the defective that exists in the traditional handicraft; the utility model relates to the determinator of a kind of protected seam coal seam dilatational strain and seat earth absciss layer amount; this device can be mobile arbitrarily in boring under closure state; be not subjected to drilling cuttings and boring deformation effect in the hole; arrive the design hole depth and open and can carry out fixingly in the hole in, this device can not be subjected to mining influence to occur to become flexible between the time saving and energy saving and test period of installation process.

The technical scheme in the invention for solving the above technical problem is: fixed part is a kind of spring device in this device hole, this mechanism is in tension in the extension spring that is installed in after the closure between pallet and the claw, the nylon rope that pulling links to each other with pin outside boring when arriving the design hole depth, pin is extracted from spring device, tension spring retraction drives the claw motion claw front end wedge angle is snapped in coal petrography, realizes fixing in the hole of this device.

Need two spring devices of processing before this covering device uses, adopt respectively Φ 14mm round bar and six to be in charge of and make pressure pin, and open screw thread in the pressure pin termination, Φ 14mm round bar passes six and is in charge of respectively with separately pressure pin and is threaded.At first from the protected coal seam floor roadway to this coal seam construction layer-through drilling, punch the coal seam and enter about top board 1m during use, finish this determinator and need to respectively utilize this spring device that a fixed base point is installed at Seam Roof And Floor; With pin that the top board spring device is closed, utilize round bar that this mechanism is transported to the top board assigned address after the pulling nylon rope extract pin, realize that the top board basic point fixes; The base plate spring mechanism structure is identical with top board structure, utilizes six to be in charge of this mechanism is transported to the seat earth assigned address, pulls open pin and realizes that the base plate basic point fixes; During Seam Mining, round bar and six is in charge of the generation relative displacement, and the terminal scale relative six of round bar is in charge of the variation of mouth of pipe scale and is coal seam dilatational strain amount through conversion, and six are in charge of relative drilling orifice scale variation is seat earth absciss layer amount through conversion.

The beneficial effects of the utility model are; convenient transportation in this device hole; be not subjected to that barrier affects in boring distortion and the hole; installation process is convenient and strength-saving; be subject to mining influence and landing can not occur; and can read intuitively coal seam dilatational strain amount and two important parameters of seat earth absciss layer amount simultaneously, support for the protective seam effect expedition provides effective parameter.

Description of drawings

Fig. 1 is structural representation after the installation of the utility model device.

Fig. 2 is the utility model device medi-spring mechanism structure schematic diagram.

Among the figure: the 1-protected coal seam; 2-seat earth rock stratum; The 3-layer-through drilling; The 4-spring device; 5-Φ 14mm round bar; 6-six is in charge of; The terminal scale of 7-round bar; 8-six is in charge of terminal scale; 40-is connected with the pin of nylon rope; The 41-pressure pin; The 42-pallet; The 43-chassis; The 44-claw; The 45-articulated elements; The 46-tension spring; The 47-fixed orifice; 48-claw hook; The 49-pin hole.

Embodiment

Fixed part is a kind of spring device 4 in this device hole, as shown in Figure 2, during use tension spring 46 1 ends are hung in pallet 42 fixed orifices 47, the other end connects claw hook 48, chassis 43 links to each other by articulated elements 45 with claw 44, compresses two claws 44 and makes both sides pin hole 49 overlap tension spring 46 stretching accumulation of energys, the pin 40 that is connected with nylon rope is inserted pin hole 49, and finishing device is prepared.Extract pin 40 at the outer pulling of boring nylon rope when spring device 4 arrives the design hole depth, tension spring 46 retractions drive claws 44 motions claw front end wedge angle are snapped in coal petrography, realize fixing in the hole of this device.

Need at first from protected coal seam floor strata 2 to this coal seam 1 construction layer-through drilling 3, punch the coal seam and enter about top board 1m during site work; With pin 40 with top board spring device 4 closures, this spring device pressure pin 41 adopts the round bar of diameter of phi 14mm, the lower end is opened screw thread and can directly be connected with similar reinforcing bar, utilize Φ 14mm round bar 5 that this mechanism is transported to the top board assigned address, the terminal scale 7 of round bar is about 30cm, be reserved in outside the boring, spur afterwards nylon rope and extract pin 40, realization top board basic point is fixed; The base plate spring mechanism structure is identical with top board structure, adopt six to be in charge of and to make pressure pin, with six be in charge of 6 be connected after, be enclosed within outside the round bar 5 of Φ 14mm, be transported to the seat earth assigned address, pull open pin 40 realization base plate basic points and fix, six are in charge of the outer 10cm of preformed hole, and six are in charge of terminal scale 8 approximately the 20cm scale; When the coal seam is subject to mining influence, Φ 14mm round bar 5 and six is in charge of 6 relative displacement is occured, read the terminal scale 7 relative six of round bar and be in charge of terminal scale 8 and change numerical value and be coal seam dilatational strain amount through conversion, six are in charge of terminal scale 8 relative drilling orifice numerical value change is seat earth absciss layer amount through conversion.

Claims

1. the determinator of a protected coal seam dilatational strain and seat earth absciss layer amount is characterized in that:

A. fixed part is spring device (4) in this device hole, chassis in this mechanism (43) and pallet (42) all are welded on the pressure pin (41), the pulling force extension spring (46) that is installed in during use between pallet (42) and the claw (44) is in tension, the nylon rope that pulling links to each other with pin (40) outside boring when arriving the design hole depth, pin (40) is extracted from pin hole (49), tension spring (46) retraction drives claw (44) motion claw (44) front end wedge angle is snapped in coal petrography, realizes fixing in the hole of this device;

B. two spring devices (4) that need process of this covering device adopt respectively Φ 14mm round bar and six to be in charge of and make pressure pin (41), and open screw thread in pressure pin (41) termination, Φ 14mm round bar (5) passes six and is in charge of (6) and is threaded with separately pressure pin (41) respectively.