CN202256692U

CN202256692U - Improved total suspended particle (TSP) advanced geological forecast signal triggering and receiving system

Info

Publication number: CN202256692U
Application number: CN2011203494081U
Authority: CN
Inventors: 许振浩; 李术才; 李利平; 隋斌; 原小帅; 周宗青
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2011-09-17
Filing date: 2011-09-17
Publication date: 2012-05-30
Anticipated expiration: 2021-09-17

Abstract

The utility model relates to an improved total suspended particle (TSP) advanced geological forecast signal triggering and receiving system, which comprises a delay measurement instrument, wherein the delay measurement instrument and explosive with a detonator are connected with a closed loop, simultaneously, the delay measurement instrument is also respectively connected with a main machine and a trigger, and the trigger is connected with the detonator; and the trigger is also connected with a primer. A timer circuit and a signal triggering circuit are arranged inside the delay measurement instrument, and the timer circuit is respectively connected with a conducting wire closed loop which is wound on the explosive, an external trigger and an internal signal triggering circuit; and the signal triggering circuit is connected with an external main machine. Due to the adoption of the improved TSP advanced geological forecast signal triggering and receiving system, the requirement on the type of the detonator is low, the system is convenient for the in-situ construction, the time error between the traditional signal triggering and receiving way can be reduced, and the forecast precision can be improved.

Description

A kind of improved TSP advance geologic prediction signal triggering and receiving system

Technical field

The utility model relates to geologic prediction signal triggering and receiving system, relates in particular to a kind of improved TSP advance geologic prediction signal triggering and receiving system.

Background technology

In the constructing tunnel process; Geologic hazards such as the gushing water that poorly plastid caused, prominent mud, landslide often take place, and the TSP advance geologic prediction is that long-term advance geologic prediction of constructing tunnel phase is used the most a kind of method, and this method belongs to non-destructive physical prospecting class probe method; Can carry out prediction to the unfavorable geology in the front of tunnel heading 150m scope; Be the indispensable part of tunnel information construction and dynamic design, effectively guiding construction guarantees construction safety; Evade large-scale geological disaster risk, reduce construction time casualties and economic loss.

Improved TSP advance geologic prediction signal triggering that adopts at present and receiving system and method have certain limitation, mainly show as:

1. owing to extensively adopt the blasting cap initiation time-delay bigger in the TSP advance geologic prediction; Even instant electric detonator also has zero to several milliseconds the time-delay of detonating; With seismic event velocity of wave 3000m/s～6000m/s is that example is calculated; During delay time error 1ms, seismic event single track signal reflex offset error can reach 3m, has a strong impact on forecast precision;

2. adopt delay time error satisfy the tunnel seismic prospecting requirement, the high precision instant electric detonator triggers, though the delay time error may command is little of several microseconds at zero point, cost is higher than general industry and uses electric detonator.

The utility model content

The purpose of the utility model is for the TSP advance geologic prediction signal triggering that overcomes present employing and receiving system seismic signal walk that time error is big, forecast accuracy and the low shortcoming of precision; Solve because general industry is long with the blasting cap initiation time-delay, time-delay is inconsistent, seismic signal walks that time error is big, the forecast accuracy is low with precision, and high precision is explored with problems such as instantaneous cap cost height; Provide a kind of than traditional approach economy, accurately, seismic signal triggering and receiving system and method that precision is high; Adopt general industry with blasting cap initiation explosive, trigger pip; Introduce the Time delay measurement appearance of independent research and measure the detonator delay time error; And change traditional signal transfer mode, measure and eliminate the influence of detonator delay time error; Behind the blasting cap initiation, send trigger pip by the Time delay measurement appearance to main frame, main frame begins to receive seismic signal, guarantees the simultaneity of explosive initiation and seismic record, reduces seismic signal to greatest extent and walks time error, effectively improves forecast degree of accuracy and accuracy.

For realizing above-mentioned purpose, the utility model adopts following technical proposals:

A kind of improved TSP advance geologic prediction signal triggering and receiving system, it comprises the Time delay measurement appearance, and said Time delay measurement appearance is connected with the closed-loop path with being provided with on the explosive of detonator, also is connected with trigger with main frame respectively simultaneously, and said trigger is connected with detonator; Trigger also is connected with initiator.

Described Time delay measurement appearance inside includes timer circuit and signal triggering circuit; Described timer circuit respectively be wound in explosive on closing of polygon loop, outside trigger, inner signal triggering circuit be connected; Described signal triggering circuit is connected with external host.

Further specifying the concrete course of work is: initiator is after trigger sends time break, and trigger sends trigger pip to detonator and Time delay measurement appearance, and Time delay measurement appearance timer circuit starts, and timing begins i.e. 0 moment; Detonator is after receiving the trigger pip that trigger sends; Owing to the delay time error reason; Zero just can detonate after several milliseconds, fired charge when detonating, and blow up and be wound in closed-loop path on the explosive, that be connected with Time delay measurement appearance timing circuit; It is the t moment that the Time delay measurement appearance stops timing, and t is the detonator delay time error; Send trigger pip to main frame when the Time delay measurement appearance stops timing, main frame begins to gather seismic signal.

The beneficial effect of the utility model is; Related a kind of improved TSP advance geologic prediction signal triggering and receiving system; Solved in the TSP advance geologic prediction detonator delay time error and measured when walking with seismic signal from a NMO correction difficult problem, compared with forefathers' research, it is little that the seismic signal that is obtained is walked time error; The advance geologic prediction precision is improved, and has reduced of the delay time error requirement of TSP advance geologic prediction detonator.

Adopt improved TSP advance geologic prediction signal triggering and receiving system to realize away the time error self-correcting, can guarantee forecast precision, can relax requirement again, save cost the blasting cap initiation time-delay.That is:

1, reduced the requirement of TSP advance geologic prediction to detonator, used general industry with on the electric detonator basis, can measure the detonator time-delay, walked time error from the NMO correction seismic signal simultaneously, work is executed at the scene of being convenient to, and practices thrift cost.

2, walk the time error zero offset capability through seismic signal, when seismic signal receives, rejected the garbage signal during the detonator time-delay is detonated automatically, reduced to have improved forecast precision because the detonator time-delay signal that brings is walked time error.

3, this Time delay measurement appearance removes and can be applicable in the TSP advance geologic prediction, and also can be applicable to the detonator delay time error and measure, and in other surface seismic exploration engineering.

Description of drawings

Fig. 1. existing signal triggering and acquisition mode figure;

Fig. 2. improved TSP advance geologic prediction signal triggering and receiving system synoptic diagram.

Wherein 1. detonators, 2. initiator, 3. trigger, 4. main frame, 5. Time delay measurement appearance, 6. timer circuit, 7. signal triggering circuit.

Embodiment

Among Fig. 1, be depicted as prior art signal triggering and acquisition mode figure, comprise initiator 2, initiator 2 is connected with trigger 3, and trigger 3 is connected with main frame 4 with detonator 1.

Among Fig. 2; Improved TSP advance geologic prediction signal triggering and receiving system synoptic diagram; Comprise initiator 2, initiator 2 is connected with trigger 3, and trigger 3 is connected with Time delay measurement appearance 5; Time delay measurement appearance 5 is connected with main frame 5 with trigger 3 respectively, and interrelates through a closed-loop path and a detonator 1 that is wound on the explosive; Described Time delay measurement appearance 5 inside include timer circuit and signal triggering circuit.Described timer circuit 6 respectively be wound in explosive on closing of polygon loop, outside trigger 3, inner signal triggering circuit 7 be connected; Described signal triggering circuit 7 is connected with external host 4.

Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.

Claims

1. improved TSP advance geologic prediction signal triggering and receiving system; It is characterized in that it comprises the Time delay measurement appearance, said Time delay measurement appearance is connected with the closed-loop path with being provided with on the explosive of detonator; Also be connected with trigger with main frame respectively simultaneously, said trigger is connected with detonator; Trigger also is connected with initiator.

2. a kind of improved TSP advance geologic prediction signal triggering as claimed in claim 1 and receiving system; It is characterized in that; Described Time delay measurement appearance inside includes timer circuit and signal triggering circuit, described timer circuit respectively be wound in explosive on closing of polygon loop, outside trigger, inner signal triggering circuit be connected; Described signal triggering circuit is connected with external host.